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CompletedNCT03491215Updated May 4, 2025Results posted

Study of Pharmacokinetics, Activity and Safety of Ruxolitinib in Pediatric Patients With Grade II-IV Acute Graft vs. Host Disease

A Phase 1/2 interventional study of Ruxolitinib in Acute Graft Versus Host Disease, sponsored by Novartis Pharmaceuticals. Completed at 19 sites in 8 countries. Open to participants aged 28 Days to 17 Years. Per ClinicalTrials.gov, last updated 2025-05-04.

Sponsored by Novartis Pharmaceuticals (part of Novartis) · Phase 1/2, Interventional, and Treatment

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Phase
Phase 1/2
Study type
Interventional
Enrollment
45
Allocation
Not applicable
Ages
28 Days to 17 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-15

Among 27 studies testing ruxolitinib in Graft vs Host Disease — 13 open to participants now, 16 under way, 2 of them phase 3. ruxolitinib · Graft vs Host Disease.

Enrollment
18th of 27
45 · median 54
Started
2019
the only one that year
Phase 1/2
3 of 27
1 open now
Registered
7th of 27
by date
Lead sponsor
6 of 27
Novartis Pharmaceuticals

Among the 27 studies testing ruxolitinib in Graft vs Host Disease, this one is the 18th largest by enrollment, is the only one that started in 2019, is one of 3 in phase 1/2, and was the 7th registered.

Graft vs Host Disease

804 studies on the registry are indexed under Graft vs Host Disease; 149 are open to participants now.

Browse Graft vs Host Disease studies →

Open to participants now

13 of the 27 studies testing ruxolitinib in Graft vs Host Disease are open now, in 12 countries. Recruiting first, the newest first:

8 more — sign in →

By country, each count listing its studies:

All 13 open studies →

About ruxolitinib

ruxolitinib: first FDA approval 2011 (JAKAFI), first EMA approval 2012. What it is approved for, and how studies give it, is on its page →

Who these studies take

Of the 103 Graft vs Host Disease studies recruiting now, 51 (50%) set no upper age limit and 42 (41%) stop at 75 or younger; 42 take children under 18; 9 take healthy volunteers.

This study: 28 Days to 17 Years · all sexes · no healthy volunteers.

The full table on the hub →

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Get alerts for this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 27 studies testing ruxolitinib in Graft vs Host Disease, or all of them as a file.
02

Study summary

The study was an open-label, single-arm, Phase I/II multi-center study to investigate the PK, activity and safety of ruxolitinib added to the patient's immunosuppressive regimen in infants, children, and adolescents ages ≥28 days to \<18 years old with either grade II-IV aGvHD or grade II-IV SR-aGvHD. The trial design included four age groups: Group 1 included patients ≥12y to \<18y, Group 2 included patients ≥6y to \<12y, Group 3 included patients ≥2y to \<6y, and Group 4 included patients ≥28days to \<2y.

Read the detailed description

This Phase I/II, open-label, uncontrolled, single-arm, multi-center study investigated PK, activity and safety of ruxolitinib when added to the subject's immunosuppressive regimen in infants, children, and adolescents aged ≥ 28 days to \< 18 years with either grade II-IV treatment naive acute GvHD or grade II-IV SR-acute GvHD following allogeneic HSCT.

The trial subjects were grouped by age as follows:

  • Group 1: subjects ≥ 12y to \< 18y,
  • Group 2: subjects ≥ 6y to \< 12y
  • Group 3: subjects ≥ 2y to \< 6y
  • Group 4 was to include subjects ≥ 28 days to \< 2y

Subjects remained in the designated age group throughout the duration of the study, based on their age at the start of treatment. All subjects in this study were enrolled and treated for 24 weeks (approximately 6 months) or until early discontinuation.

All subjects were followed for an additional 18 months (total duration = 2 years from enrolment). Where the occurrence of acute GvHD flare require re-initiation of treatment or when extended tapering resulted in ruxolitinib not having been discontinued by the end of 24 weeks, subjects could continue to taper ruxolitinib beyond 24 weeks up to a maximum of 48 weeks.

Subjects ≥ 12 y to \< 18 y (Group 1) were treated with 10 mg BID, this dose was the RP2D, and was used to treat all subjects in this age group in Phase II of Study CINC424F12201. All other age groups were treated with the RP2D determined during Phase I of study CINC424F12201.

Therefore, all ≥12 to \<18 year old subjects were automatically enrolled in Phase II. The first 5 subjects treated in Group 1 underwent extensive PK sampling to inform the RP2D determination of the younger age groups in Phase I.

03

Conditions studied

  • Acute Graft Versus Host Disease

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Keywords

  • Graft versus host disease
  • GvHD
  • acute graft versus host disease
  • aGvHD
  • Steroid refractory acute graft versus host disease
  • SR-aGvHD
  • Ruxolitinib
  • INC424
  • allogeneic stem cell transplantation
  • treatment naive
04

Who can participate

Ages eligible
28 Days to 17 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Male or female patients age ≥28 days and \<18 years at the time of .
  • Patients who have undergone alloSCT from any donor source (matched unrelated donor, sibling, haplo-identical) using bone marrow, peripheral blood stem cells, or cord blood. Recipients of myeloablative or reduced intensity conditioning are eligible.
  • Patients with a clinically confirmed diagnosis of grades II-IV aGvHD within 48 hours prior to study treatment start. Patients may have either: Treatment-naïve aGvHD (criteria per Harris et al. 2016) OR aGvHD as per institutional criteria, or per physician decision in case institutional criteria are not available, and the patient is currently receiving systemic corticosteroids.
  • Evident myeloid engraftment with > 1,000/µl and count >20,000/µl. (Use of growth factor supplementation and transfusion support is allowed.)

Exclusion criteria

Exclusion Criteria:

  • Has received the following systemic therapy for aGvHD: a) Treatment-naïve aGvHD patients have received any prior systemic treatment of aGvHD except for a maximum 72h of prior systemic therapy of methylprednisolone or equivalent after the onset of acute GvHD. Patients are allowed to have received prior GvHD prophylaxis which is not counted as systemic treatment (as long as the prophylaxis was started prior to the diagnosis of aGvHD); OR b) SR-aGvHD patients have received two or more prior systemic treatments for aGvHD in addition to corticosteroids
  • Clinical presentation resembling de novo chronic GvHD or GvHD overlap syndrome with both acute and chronic GvHD features (as defined by Jagasia et al 2015).
  • Failed prior alloSCT within the past 6 months.
  • Presence of primary , or who have been treated for relapse after the alloSCT was performed, or who may require rapid immune suppression withdrawal of immune suppression as pre-emergent treatment of early malignancy relapse.
  • Acute GvHD occurring after non-scheduled donor leukocyte infusion (DLI) administered for pre-emptive treatment of malignancy recurrence. Note: Patients who have received a scheduled DLI as part of their transplant procedure and not for management of malignancy relapse are eligible.
  • Any corticosteroid therapy for indications other than aGvHD at doses > 1 mg/kg/day methylprednisolone (or equivalent prednisone dose 1.25 mg/kg/day) within 7 days of Screening. Routine corticosteroids administered during conditioning or cell infusion is allowed.
  • Patients who received JAK inhibitor therapy for any indication after initiation of current alloSCT conditioning.

Other protocol-defined Inclusion/Exclusion may apply.

Terms in these criteria, in plain language(6)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorized to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
45 participants (actual)

Study arms

  • Experimental
    Ruxolitinib

    All pediatric participants received ruxolitinib twice a day (BID) for a planned duration of 24 weeks in either tablet, capsule or oral solution (liquid), depending on the group they were in.

    Drug: Ruxolitinib

Interventions

  • All enrolled pediatric participants received ruxolitinib as a 5 mg tablet (adult and adolescent formulation) or an oral pediatric formulation (administered as oral solution or capsule dispersed in liquid).

    Also known as: INC424

06

What researchers measure

Primary outcomes

  1. Phase I: Measurement of Pharmacokinetic (PK) Parameter, AUClast, in aGvHD and SR-aGvHD Patients

    Measurement in acute GvHD and SR-acute GvHD subjects used extensive PK sampling in Groups 1-3 sparse sampling in Group 4. AUClast: The AUC from time zero to the last measurable concentration sampling time (Tlast).

    Time frame: Day 1: at predose, 0.5,1,1.5, 2, 4, 6, 9 hours post dose

  2. Phase I: Measurement of PK Parameter, Cmax, in aGvHD and SR-aGvHD Patients

    Measurement in acute GvHD and SR-acute GvHD subjects used extensive PK sampling in Groups 1-3 and sparse sampling in Group 4. Cmax: The maximum (peak) observed plasma drug concentration

    Time frame: Day 1: at predose, 0.5,1,1.5, 2, 4, 6, 9 hours post dose

  3. Phase I: Measurement of PK Parameter, T1/2, in aGvHD and SR-aGvHD Patients

    Measurement in acute GvHD and SR-acute GvHD subjects used extensive PK sampling in Groups 1-3 and sparse sampling in Group 4. T1/2: The elimination half-life associated with the terminal slope (Lambda_z ) of a semi logarithmic concentration-time curve

    Time frame: Day 1: at predose, 0.5,1,1.5, 2, 4, 6, 9 hours post dose

  4. Phase I: Measurement of PK Parameter, Ctrough, in aGvHD and SR-aGvHD Patients

    Measurement in acute GvHD and SR-acute GvHD subjects used extensive PK sampling in Groups 1-3 and sparse sampling in Group 4. Ctrough: The minimum observed plasma concentration at the end of an administration interval (corresponding to the pre-dose concentration prior to the following administration).

    Time frame: Day 7 at pre-dose

  5. Phase I: Age-based Determination of Recommended Phase 2 Dose (RP2D) Using AUClast

    Phase I: Age-based determination of RP2D in Groups 2 and 3 and was based on observed PK parameters in Groups 1-3 * Group 2: age ≥ 6 to \< 12 years * Group 3: age ≥ 2 to \< 6 years AUClast: The AUC from time zero to the last measurable concentration sampling time (Tlast).

    Time frame: Day 1: at predose, 0.5,1,1.5, 2, 4, 6, 9 hours post dose

  6. Phase I: Age-based Determination of Recommended Phase 2 Dose (RP2D) Using Cmax

    Phase I: Age-based determination of RP2D in Groups 2 and 3 and was based on observed PK parameters in Groups 1-3 * Group 2: age ≥ 6 to \< 12 years * Group 3: age ≥ 2 to \< 6 years Cmax: The maximum (peak) observed plasma drug concentration.

    Time frame: Day 1: at predose, 0.5,1,1.5, 2, 4, 6, 9 hours post dose

  7. Phase I: Age-based Determination of Recommended Phase 2 Dose (RP2D) Using Ctrough

    Phase I: Age-based determination of RP2D in Groups 2 and 3 and was based on observed PK parameters in Groups 1-3 * Group 2: age ≥ 6 to \< 12 years * Group 3: age ≥ 2 to \< 6 years Ctrough: The minimum observed plasma concentration at the end of an administration interval (corresponding to the pre-dose concentration prior to the following administration).

    Time frame: Day 7 at pre-dose

  8. Phase II: Overall Response Rate (ORR)

    Phase II: ORR is defined as the percentage of patients demonstrating a complete response (CR) or partial response (PR) without requirement for additional systemic therapies for an earlier progression, mixed response or non-response. Scoring of response was relative to the organ stage at the start of the study treatment. Complete response (CR) is defined as a score of 0 for the aGvHD grading in all evaluable organs that indicates complete resolution of all signs and symptoms of aGvHD in all evaluable organs without administration of additional systemic therapy for any earlier progression, mixed response or non-response of aGvHD. Partial response (PR) is defined as improvement of 1 stage in 1 or more organs involved with aGvHD signs or symptoms without progression in other organs or sites without administration of additional systemic therapy for an earlier progression, mixed response or non-response of aGvHD.

    Time frame: Day 28

Secondary outcomes

  1. Percentage of All Patients Who Achieved a Complete Response (CR) or Partial Response (PR) (Durable Overall Response Rate (ORR))

    Durable ORR at Day 56 was defined as the percentage of all subjects who achieved a complete response (CR) or partial response (PR) at Day 28 and maintained a CR or PR at Day 56. Complete-response was defined as a score of 0 for the acute GvHD grading in all evaluable organs that indicates complete resolution of all signs and symptoms of acute GvHD in all evaluable organs without administration of additional systemic therapies for any earlier progression, mixed response or non-response of acute GvHD. Partial response was defined as improvement of 1 stage in 1 or more organs involved with acute GvHD signs or symptoms without progression in other organs or sites without administration of additional systemic therapies for an earlier progression, mixed response or non-response of acute GvHD.

    Time frame: Day 56

  2. Percentage of Patients Who Achieved OR (CR+PR) at Day 14

    ORR at Day 14 was defined as the percentage of participants with complete response (CR) or partial response (PR ) at Day 14 according to standard criteria. Complete response (CR) is defined as a score of 0 for the aGvHD grading in all evaluable organs that indicates complete resolution of all signs and symptoms of aGvHD in all evaluable organs without administration of additional systemic therapy for any earlier progression, mixed response or non-response of aGvHD. Partial response (PR) is defined as improvement of 1 stage in 1 or more organs involved with aGvHD signs or symptoms without progression in other organs or sites without administration of additional systemic therapy for an earlier progression, mixed response or non-response of aGvHD.

    Time frame: Day 14

  3. Area Under the Curve (AUClast) Versus Efficacy: Impact of AUClast on Overall Response Rate (ORR) at Day 28

    To assess pharmacokinetic/pharmacodynamic relationship (comparison of AUClast with ORR at day 28). ORR is the percentage of patients with a complete response (CR) or partial response (PR) without additional systemic therapies. Given age group did not have a significant effect on the model fit, the comparison is made indirectly through the odds ratio across exposure levels in each group. A high response rate may prevent model convergence. Results are shown only upon successful convergence.

    Time frame: Day 28

  4. Area Under the Curve (AUClast) Versus Efficacy: Impact of AUClast on Durable Response Rate (DRR) at Day 56

    To assess pharmacokinetic/pharmacodynamic relationship (comparison of AUClast with DRR at day 56). Durable ORR at Day 56 was defined as the percentage of all participants who achieved a complete response (CR) or partial response (PR) at Day 28 and maintained a CR or PR at Day 56. Given age group did not have a significant effect on the model fit, the comparison is made indirectly through the odds ratio across exposure levels in each group. A high response rate may prevent model convergence. Results are shown only upon successful convergence.

    Time frame: Day 56

  5. Area Under the Curve (AUClast) Versus Safety: Impact of AUClast on Bleeding

    To assess pharmacokinetic/pharmacodynamic relationship (comparison of AUClast with safety - bleeding). Bleeding was reported as an adverse event and the AE severity grade was assessed according to CTCAE grading. Given age group did not have a significant effect on the model fit, the comparison is made indirectly through the hazard ratio across exposure levels in each group. A high response rate may prevent model convergence. Results are shown only upon successful convergence.

    Time frame: 24 weeks

  6. Area Under the Curve (AUClast) Versus Safety: Impact of AUClast on Infection

    To assess pharmacokinetic/pharmacodynamic relationship (comparison of AUClast with safety - infection). This analysis includes subjects from F12201 (pediatric and adolescent participants) study. Infections were reported as adverse events and the AE severity grade was assessed according to CTCAE grading. Given age group did not have a significant effect on the model fit, the comparison is made indirectly throughs the hazard ratio across exposure levels in each group. A high response rate may prevent model convergence. Results are shown only upon successful convergence

    Time frame: 24 weeks

  7. Duration of Response (DOR)

    Duration of response was defined as the time from first response (PR or CR) until acute GvHD progression, or the date of additional systemic therapy for acute GvHD. Death without prior observation of acute GvHD progression, and onset of chronic GvHD are considered to be competing risks. Duration of response will be censored at the last response assessment prior to or at the analysis cut-off date, if no events/competing risks occurred on or before 4 weeks (28 days) after the last GvHD assessment. The estimated probability of loss of response at 1, 2 and 6 months after participant's first achievement of CR or PR has been reported. Due to the presence of competing risk, the DOR results are being presented in the form of the probability of loss of response at different time points. As planned in the Statistical Analysis Plan (SAP), this outcome measure is provided for all subjects instead of per age groups.

    Time frame: Months 1, 2 & 6

  8. Weekly Cumulative Steroid Dose for Each Patient up to Day 56

    The weekly cumulative steroid dose was calculated for each subject up to Day 56 and the overall cumulative steroid dose was calculated for each subject at Day 56.

    Time frame: up to 56 days (Week 1 - Week 8)

  9. Overall Survival (OS) Per Kaplan Meier

    OS is defined as the time from the start of treatment to the date of death due to any cause. If a subject was not known to have died, then OS was censored at the latest date the subject was known to be alive. The estimated survival probability at 1,2,6,12,18 months after start of treatment has been reported. (on or before the cut-off date). As planned in the SAP, this outcome measure is provided for all subjects instead of per age groups.

    Time frame: 1 Month (M), 2 M, 6M, 12M, 18M

  10. Event-Free Survival (EFS) Per Kaplan-Meier Estimates

    EFS is defined as the time from start of treatment to the date of hematologic disease relapse/progression, graft failure, or death due to any cause. If a subject was not known to have any event, then EFS was censored at the latest date the subject was known to be alive (on or before the cut-off date).The estimated probability of event free at 1,2,6,12,18 months after start of treatment has been reported. As planned in the SAP, this outcome measure is provided for all subjects instead of per age groups.

    Time frame: 1 Month (M), 2 M, 6M, 12M, 18M

  11. Failure-Free Survival (FFS)

    Failure-free (FF) survival was defined as the time from start date of treatment to any of the following: hematologic relapse/progression, non-relapse mortality (NRM) or addition of new systemic acute GvHD treatment. The cumulative incidence (CI) of the onset of failure event at 1,2,6,12,18,24 months after start of treatment has been reported. As planned in the SAP, this outcome measure is provided for all subjects instead of per age groups.

    Time frame: 1 Month (M), 2M, 6M, 12M, 18M, 24M

  12. Non Relapse Mortality (NRM)

    NRM is defined as the time from start of treatment to date of death not preceded by hematologic disease relapse/progression. The cumulative incidence (CI) of non-relapse mortality at 1,2,6,12,18,24 months after start of treatment has been reported. As planned in the SAP, this outcome measure is provided for all subjects instead of per age groups.

    Time frame: Month (M)1, M2, M6, M12, M18, M24

  13. Incidence of Malignancy Relapse (MR)/Progression

    MR was defined as the time from start of treatment to hematologic malignancy relapse/progression. Calculated for patients with underlying hematologic malignant disease. The cumulative incidence (CI) of malignancy relapse/progression at 1,2,6,12,18,24 months after start of treatment has been reported. As planned in the SAP, this outcome measure is provided for all subjects instead of per age groups.

    Time frame: Month (M) 1, M2, M6, M12, M18, M24,

  14. Cumulative Incidence (CI) of cGvHD

    cGvHD is defined as the diagnosis of any cGvHD including mild, moderate, severe. Incidence of chronic GvHD was the time from the start of treatment to onset of chronic GvHD. Cumulative incidence of chronic GvHD was estimated, accounting for deaths without prior onset of chronic GvHD and hematologic disease relapse/progression as the competing risks. The cumulative incidence (CI) of cGvHD at 1, 2, 6, 12, 18 and 24 months after start of treatment has been reported. As planned in the SAP, this outcome measure is provided for all subjects instead of per age groups.

    Time frame: Month (M) 1, M2, M6, M12, M18, M24

  15. Graft Failure

    This was assessed by donor cell chimerism, defined as initial whole blood or marrow donor chimerism for those who had ≥5% donor cell chimerism at baseline. If donor cell chimerism declined to \<5% on subsequent measurements, graft failure was declared.

    Time frame: 2 years

  16. Questionnaire on Acceptability and Palatability

    Responses from the acceptability and palatability of the study drug (only for subjects administered with oral pediatric formulation starting treatment Day 1) were evaluated from a questionnaire completed by subjects, with the help from parents or caregivers as needed at the following visits: Day 1 (after first dose), Week 4 (1 month) ((after either morning or evening dose of that visit date), Week 24 (6 months) (after either morning or evening dose of that visit date). The choices for taste of the medication were, 'Very good', 'good', 'not good or bad', 'Bad', very bad. The choices for aftertaste of the medication were, 'Very good', 'Good', 'Not good or bad' , 'Bad', Very bad'. The choices for the smell of the medication were, 'Not good or bad' or 'Bad'.

    Time frame: Day 1, Week 4 (1 month), Week 24 (6 months)

  17. PK Parameter - Maximum Serum Concentration (Cmax) Versus Efficacy

    To assess pharmacokinetic/pharmacodynamic relationship (comparison of Cmax with efficacy). Cmax: The maximum (peak) observed plasma drug concentration.

    Time frame: 24 weeks

  18. PK Parameter: Minimum Serum Concentration (Ctrough) Versus Safety

    To assess pharmacokinetic/pharmacodynamic relationships (comparison of Ctrough with safety). Ctrough: The minimum observed plasma concentration at the end of an administration interval (corresponding to the pre-dose concentration prior to the following administration).

    Time frame: 24 weeks

  19. PK Parameter: Cmax Versus Safety

    To assess pharmacokinetic/pharmacodynamics relationship (comparison of Cmax with safety). Cmax: The maximum (peak) observed plasma drug concentration.

    Time frame: 24 weeks

  20. PK Parameter: Ctrough Versus Efficacy

    To assess pharmacokinetic/pharmacodynamics relationship (comparison of Ctrough with efficacy). Ctrough: The minimum observed plasma concentration at the end of an administration interval (corresponding to the pre-dose concentration prior to the following administration).

    Time frame: 24 weeks

  21. PK Parameter: Profile of Biomarker Concentration Changes Across Different AUC Quantile Groups

    Describe the relationship between AUC and PD biomarkers. Provide profile of biomarker concentration changes across different AUC quantile groups from baseline. This analysis includes subjects from F12201 study. Population was divided by four level of exposure using AUClast Day 1 quartiles. As planned in SAP, this outcome measure is provided for all subjects instead of per age groups.

    Time frame: Week 4

  22. PK Parameter: Cmax Versus PD Biomarkers

    To assess pharmacokinetic/pharmacodynamic relationship (comparison of Cmax with PD biomarkers). Cmax: The maximum (peak) observed plasma drug concentration.

    Time frame: 24 weeks

  23. PK Parameter: Ctrough Versus PD Biomarkers

    To assess pharmacokinetic/pharmacodynamics relationship (Ctrough with PD biomarkers). Ctrough: The minimum observed plasma concentration at the end of an administration interval (corresponding to the pre-dose concentration prior to the following administration).

    Time frame: 24 weeks

  24. Percentage of Patients Who Achieved Best Overall Response (BOR) up to Day 28

    The best overall response (BOR) was defined as percentage of participants with (complete response (CR) or partial response (PR) at any time point and up to and including Day 28 and before the start of additional systemic therapy for acute GvHD (aGvHD).

    Time frame: Up to 28 days and before start of additional aGvHD therapy

07

Results

Posted Nov 8, 2024

Participant flow

A total of 45 subjects were enrolled in the study and treated with the confirmed RP2D, of which at least 20% had treatment naïve acute GvHD and at least 40% had SR-acute GvHD. The study was a single arm study with the subjects grouped as follows: Group 1: subjects ≥ 12y to \< 18y, Group 2: subjects ≥ 6y to \< 12y, Group 3: subjects ≥ 2y to \< 6y, Group 4 was to include subjects ≥ 28 days to \< 2y.

Participant flow — Overall Study
MilestoneGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BIDGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2y
Started1812150
Rux formulation - received tablet181000
Rux formulation - received capsule0270
Rux formulation - received oral solution0080
Completed1110140
Not completed7210
Withdrew: Death6210
Withdrew: Physician decision1000

Outcome measures

PrimaryPhase I: Measurement of Pharmacokinetic (PK) Parameter, AUClast, in aGvHD and SR-aGvHD Patients

Measurement in acute GvHD and SR-acute GvHD subjects used extensive PK sampling in Groups 1-3 sparse sampling in Group 4. AUClast: The AUC from time zero to the last measurable concentration sampling time (Tlast).

Time frame:
Day 1: at predose, 0.5,1,1.5, 2, 4, 6, 9 hours post dose
Reported as:
Geometric mean · ng*hr/mL
Phase I: Measurement of Pharmacokinetic (PK) Parameter, AUClast, in aGvHD and SR-aGvHD Patients
ng*hr/mLGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BID TabletGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID TabletGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID CapsuleGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID CapsuleGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID LiquidGroup 4: Subjects >= 28 Days to < 2y
Phase I: Measurement of Pharmacokinetic (PK) Parameter, AUClast, in aGvHD and SR-aGvHD Patients252 ± 186.6372 ± 58.6154 ± 58.1239 ± 65.3259 ± 53.6—
Statistical analysis
  • Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID Tablet vs Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID Capsule vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID Capsule vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID Liquid · Gmr: 0.801 · 90% CI 0.490 to 1.311
  • Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BID Tablet vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID Capsule vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID Liquid · Gmr: 0.991 · 90% CI 0.532 to 1.846
  • Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BID Tablet vs Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID Tablet vs Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID Capsule · Gmr: 1.237 · 90% CI 0.639 to 2.394
PrimaryPhase I: Measurement of PK Parameter, Cmax, in aGvHD and SR-aGvHD Patients

Measurement in acute GvHD and SR-acute GvHD subjects used extensive PK sampling in Groups 1-3 and sparse sampling in Group 4. Cmax: The maximum (peak) observed plasma drug concentration

Time frame:
Day 1: at predose, 0.5,1,1.5, 2, 4, 6, 9 hours post dose
Reported as:
Geometric mean · ng/ML
Phase I: Measurement of PK Parameter, Cmax, in aGvHD and SR-aGvHD Patients
ng/MLGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BID TabletGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID TabletGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID CapsuleGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID CapsuleGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID LiquidGroup 4: Subjects >= 28 Days to < 2y
Phase I: Measurement of PK Parameter, Cmax, in aGvHD and SR-aGvHD Patients66.1 ± 169.8105 ± 71.449.4 ± 45.761.2 ± 81.166.5 ± 60.8—
Statistical analysis
  • Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID Tablet vs Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID Capsule vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID Capsule vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID Liquid · Gmr: 0.709 · 90% CI 0.425 to 1.184
  • Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BID Tablet vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID Capsule vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID Liquid · Gmr: 0.968 · 90% CI 0.506 to 1.851
  • Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BID Tablet vs Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID Tablet vs Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID Capsule · Gmr: 1.365 · 90% CI 0.686 to 2.714
PrimaryPhase I: Measurement of PK Parameter, T1/2, in aGvHD and SR-aGvHD Patients

Measurement in acute GvHD and SR-acute GvHD subjects used extensive PK sampling in Groups 1-3 and sparse sampling in Group 4. T1/2: The elimination half-life associated with the terminal slope (Lambda_z ) of a semi logarithmic concentration-time curve

Time frame:
Day 1: at predose, 0.5,1,1.5, 2, 4, 6, 9 hours post dose
Reported as:
Geometric mean · hour
Phase I: Measurement of PK Parameter, T1/2, in aGvHD and SR-aGvHD Patients
hourGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BID TabletGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID TabletGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID CapsuleGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID CapsuleGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID LiquidGroup 4: Subjects >= 28 Days to < 2y
Phase I: Measurement of PK Parameter, T1/2, in aGvHD and SR-aGvHD Patients1.33 ± 31.71.66 ± 17.51.50 ± 6.51.86 ± 29.91.78 ± 66.3—
PrimaryPhase I: Measurement of PK Parameter, Ctrough, in aGvHD and SR-aGvHD Patients

Measurement in acute GvHD and SR-acute GvHD subjects used extensive PK sampling in Groups 1-3 and sparse sampling in Group 4. Ctrough: The minimum observed plasma concentration at the end of an administration interval (corresponding to the pre-dose concentration prior to the following administration).

Time frame:
Day 7 at pre-dose
Reported as:
Geometric mean · ng/ml
Phase I: Measurement of PK Parameter, Ctrough, in aGvHD and SR-aGvHD Patients
ng/mlGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BID TabletGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID TabletGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID CapsuleGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID CapsuleGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID LiquidGroup 4: Subjects >= 28 Days to < 2y
Phase I: Measurement of PK Parameter, Ctrough, in aGvHD and SR-aGvHD Patients9.27 ± 379.49.75 ± 255.51.71 ± 1.26.18 ± 195.83.99 ± 277.1—
Statistical analysis
  • Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID Tablet vs Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID Capsule vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID Capsule vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID Liquid · Gmr: 0.759 · 90% CI 0.245 to 2.352
  • Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BID Tablet vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID Capsule vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID Liquid · Gmr: 0.516 · 90% CI 0.150 to 1.784
  • Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BID Tablet vs Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID Tablet vs Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID Capsule · Gmr: 0.681 · 90% CI 0.178 to 2.597
PrimaryPhase I: Age-based Determination of Recommended Phase 2 Dose (RP2D) Using AUClast

Phase I: Age-based determination of RP2D in Groups 2 and 3 and was based on observed PK parameters in Groups 1-3 * Group 2: age ≥ 6 to \< 12 years * Group 3: age ≥ 2 to \< 6 years AUClast: The AUC from time zero to the last measurable concentration sampling time (Tlast).

Time frame:
Day 1: at predose, 0.5,1,1.5, 2, 4, 6, 9 hours post dose
Reported as:
Geometric mean · h*ng/mL
Phase I: Age-based Determination of Recommended Phase 2 Dose (RP2D) Using AUClast
h*ng/mLGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BID TabletGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID CapsuleGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID TabletGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID CapsuleGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID LiquidGroup 4: Subjects >= 28 Days to < 2y
Phase I: Age-based Determination of Recommended Phase 2 Dose (RP2D) Using AUClast252 ± 186.6154 ± 58.1372 ± 58.6239 ± 65.3259 ± 53.6—
PrimaryPhase I: Age-based Determination of Recommended Phase 2 Dose (RP2D) Using Cmax

Phase I: Age-based determination of RP2D in Groups 2 and 3 and was based on observed PK parameters in Groups 1-3 * Group 2: age ≥ 6 to \< 12 years * Group 3: age ≥ 2 to \< 6 years Cmax: The maximum (peak) observed plasma drug concentration.

Time frame:
Day 1: at predose, 0.5,1,1.5, 2, 4, 6, 9 hours post dose
Reported as:
Geometric mean · ng/mL
Phase I: Age-based Determination of Recommended Phase 2 Dose (RP2D) Using Cmax
ng/mLGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BID TabletGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID CapsuleGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID TabletGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID CapsuleGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID LiquidGroup 4: Subjects >= 28 Days to < 2y
Phase I: Age-based Determination of Recommended Phase 2 Dose (RP2D) Using Cmax66.1 ± 169.849.4 ± 45.7105 ± 71.461.2 ± 81.166.5 ± 60.8—
PrimaryPhase I: Age-based Determination of Recommended Phase 2 Dose (RP2D) Using Ctrough

Phase I: Age-based determination of RP2D in Groups 2 and 3 and was based on observed PK parameters in Groups 1-3 * Group 2: age ≥ 6 to \< 12 years * Group 3: age ≥ 2 to \< 6 years Ctrough: The minimum observed plasma concentration at the end of an administration interval (corresponding to the pre-dose concentration prior to the following administration).

Time frame:
Day 7 at pre-dose
Reported as:
Geometric mean · ng/ml
Phase I: Age-based Determination of Recommended Phase 2 Dose (RP2D) Using Ctrough
ng/mlGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BID TabletGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID CapsuleGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID TabletGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID CapsuleGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID LiquidGroup 4: Subjects >= 28 Days to < 2y
Phase I: Age-based Determination of Recommended Phase 2 Dose (RP2D) Using Ctrough8.85 ± 538.61.71 ± 1.210.6 ± 208.16.18 ± 195.83.99 ± 277.1—
PrimaryPhase II: Overall Response Rate (ORR)

Phase II: ORR is defined as the percentage of patients demonstrating a complete response (CR) or partial response (PR) without requirement for additional systemic therapies for an earlier progression, mixed response or non-response. Scoring of response was relative to the organ stage at the start of the study treatment. Complete response (CR) is defined as a score of 0 for the aGvHD grading in all evaluable organs that indicates complete resolution of all signs and symptoms of aGvHD in all evaluable organs without administration of additional systemic therapy for any earlier progression, mixed response or non-response of aGvHD. Partial response (PR) is defined as improvement of 1 stage in 1 or more organs involved with aGvHD signs or symptoms without progression in other organs or sites without administration of additional systemic therapy for an earlier progression, mixed response or non-response of aGvHD.

Time frame:
Day 28
Reported as:
Number · Percentage of participants
Phase II: Overall Response Rate (ORR)
Percentage of participantsGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BIDGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2y
Phase II: Overall Response Rate (ORR)83.3 (62.3 to 95.3)83.3 (56.2 to 97.0)86.7 (63.7 to 97.6)—
SecondaryPercentage of All Patients Who Achieved a Complete Response (CR) or Partial Response (PR) (Durable Overall Response Rate (ORR))

Durable ORR at Day 56 was defined as the percentage of all subjects who achieved a complete response (CR) or partial response (PR) at Day 28 and maintained a CR or PR at Day 56. Complete-response was defined as a score of 0 for the acute GvHD grading in all evaluable organs that indicates complete resolution of all signs and symptoms of acute GvHD in all evaluable organs without administration of additional systemic therapies for any earlier progression, mixed response or non-response of acute GvHD. Partial response was defined as improvement of 1 stage in 1 or more organs involved with acute GvHD signs or symptoms without progression in other organs or sites without administration of additional systemic therapies for an earlier progression, mixed response or non-response of acute GvHD.

Time frame:
Day 56
Reported as:
Number · Percentage of participants
Percentage of All Patients Who Achieved a Complete Response (CR) or Partial Response (PR) (Durable Overall Response Rate (ORR))
Percentage of participantsGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BIDGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2y
Percentage of All Patients Who Achieved a Complete Response (CR) or Partial Response (PR) (Durable Overall Response Rate (ORR))55.6 (34.1 to 75.6)75.0 (47.3 to 92.8)73.3 (48.9 to 90.3)—
SecondaryPercentage of Patients Who Achieved OR (CR+PR) at Day 14

ORR at Day 14 was defined as the percentage of participants with complete response (CR) or partial response (PR ) at Day 14 according to standard criteria. Complete response (CR) is defined as a score of 0 for the aGvHD grading in all evaluable organs that indicates complete resolution of all signs and symptoms of aGvHD in all evaluable organs without administration of additional systemic therapy for any earlier progression, mixed response or non-response of aGvHD. Partial response (PR) is defined as improvement of 1 stage in 1 or more organs involved with aGvHD signs or symptoms without progression in other organs or sites without administration of additional systemic therapy for an earlier progression, mixed response or non-response of aGvHD.

Time frame:
Day 14
Reported as:
Number · Percentage of participants
Percentage of Patients Who Achieved OR (CR+PR) at Day 14
Percentage of participantsGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BIDGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2y
Percentage of Patients Who Achieved OR (CR+PR) at Day 1472.2 (50.2 to 88.4)66.7 (39.1 to 87.7)86.7 (63.7 to 97.6)—
SecondaryArea Under the Curve (AUClast) Versus Efficacy: Impact of AUClast on Overall Response Rate (ORR) at Day 28

To assess pharmacokinetic/pharmacodynamic relationship (comparison of AUClast with ORR at day 28). ORR is the percentage of patients with a complete response (CR) or partial response (PR) without additional systemic therapies. Given age group did not have a significant effect on the model fit, the comparison is made indirectly through the odds ratio across exposure levels in each group. A high response rate may prevent model convergence. Results are shown only upon successful convergence.

Time frame:
Day 28
Reported as:
Number · Percentage of participants
Area Under the Curve (AUClast) Versus Efficacy: Impact of AUClast on Overall Response Rate (ORR) at Day 28
Percentage of participantsGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BID TabletGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2y
Area Under the Curve (AUClast) Versus Efficacy: Impact of AUClast on Overall Response Rate (ORR) at Day 2892.990.986.7—
SecondaryArea Under the Curve (AUClast) Versus Efficacy: Impact of AUClast on Durable Response Rate (DRR) at Day 56

To assess pharmacokinetic/pharmacodynamic relationship (comparison of AUClast with DRR at day 56). Durable ORR at Day 56 was defined as the percentage of all participants who achieved a complete response (CR) or partial response (PR) at Day 28 and maintained a CR or PR at Day 56. Given age group did not have a significant effect on the model fit, the comparison is made indirectly through the odds ratio across exposure levels in each group. A high response rate may prevent model convergence. Results are shown only upon successful convergence.

Time frame:
Day 56
Reported as:
Number · Percentage of participants
Area Under the Curve (AUClast) Versus Efficacy: Impact of AUClast on Durable Response Rate (DRR) at Day 56
Percentage of participantsGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BIDGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2y
Area Under the Curve (AUClast) Versus Efficacy: Impact of AUClast on Durable Response Rate (DRR) at Day 5671.481.873.3—
Statistical analysis
  • Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BID vs Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID · Odds ratio (or): 0.976 · 95% CI 0.858 to 1.109
  • Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BID vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID · Odds ratio (or): 0.951 · 95% CI 0.735 to 1.232
SecondaryArea Under the Curve (AUClast) Versus Safety: Impact of AUClast on Bleeding

To assess pharmacokinetic/pharmacodynamic relationship (comparison of AUClast with safety - bleeding). Bleeding was reported as an adverse event and the AE severity grade was assessed according to CTCAE grading. Given age group did not have a significant effect on the model fit, the comparison is made indirectly through the hazard ratio across exposure levels in each group. A high response rate may prevent model convergence. Results are shown only upon successful convergence.

Time frame:
24 weeks
Reported as:
Number · Percentage of participants
Area Under the Curve (AUClast) Versus Safety: Impact of AUClast on Bleeding
Percentage of participantsGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BIDGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2y
Area Under the Curve (AUClast) Versus Safety: Impact of AUClast on Bleeding21.418.26.7—
Statistical analysis
  • Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BID vs Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID · Hazard ratio (hr): 1.014 · 95% CI 0.921 to 1.115
  • Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BID vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID · Hazard ratio (hr): 1.029 · 95% CI 0.841 to 1.258
SecondaryArea Under the Curve (AUClast) Versus Safety: Impact of AUClast on Infection

To assess pharmacokinetic/pharmacodynamic relationship (comparison of AUClast with safety - infection). This analysis includes subjects from F12201 (pediatric and adolescent participants) study. Infections were reported as adverse events and the AE severity grade was assessed according to CTCAE grading. Given age group did not have a significant effect on the model fit, the comparison is made indirectly throughs the hazard ratio across exposure levels in each group. A high response rate may prevent model convergence. Results are shown only upon successful convergence

Time frame:
24 weeks
Reported as:
Number · Percentage of participants
Area Under the Curve (AUClast) Versus Safety: Impact of AUClast on Infection
Percentage of participantsGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BIDGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2y
Area Under the Curve (AUClast) Versus Safety: Impact of AUClast on Infection64.363.660.0—
Statistical analysis
  • Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BID vs Group 2: Subjects ≥ 6y to < 12y - RUX 5mg BID · Hazard ratio (hr): 1.063 · 95% CI 1.012 to 1.117
  • Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BID vs Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID · Hazard ratio (hr): 1.132 · 95% CI 1.025 to 1.25
SecondaryDuration of Response (DOR)

Duration of response was defined as the time from first response (PR or CR) until acute GvHD progression, or the date of additional systemic therapy for acute GvHD. Death without prior observation of acute GvHD progression, and onset of chronic GvHD are considered to be competing risks. Duration of response will be censored at the last response assessment prior to or at the analysis cut-off date, if no events/competing risks occurred on or before 4 weeks (28 days) after the last GvHD assessment. The estimated probability of loss of response at 1, 2 and 6 months after participant's first achievement of CR or PR has been reported. Due to the presence of competing risk, the DOR results are being presented in the form of the probability of loss of response at different time points. As planned in the Statistical Analysis Plan (SAP), this outcome measure is provided for all subjects instead of per age groups.

Time frame:
Months 1, 2 & 6
Reported as:
Number · Prob. of loss of response in percentage
Duration of Response (DOR)
Prob. of loss of response in percentageAll Subjects (Group 1, Group 2 & Group 3)Group 4: Subjects >= 28 Days to < 2y
1 Month2.63 (0.20 to 11.98)—
2 Months5.41 (0.95 to 16.13)—
6 Months20.37 (8.74 to 35.40)—
SecondaryWeekly Cumulative Steroid Dose for Each Patient up to Day 56

The weekly cumulative steroid dose was calculated for each subject up to Day 56 and the overall cumulative steroid dose was calculated for each subject at Day 56.

Time frame:
up to 56 days (Week 1 - Week 8)
Reported as:
Mean · mg/kg
Weekly Cumulative Steroid Dose for Each Patient up to Day 56
mg/kgGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BIDGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2y
Week 112.6 ± 6.0414.1 ± 4.6011.9 ± 5.32—
Week 221.9 ± 10.7926.1 ± 9.9121.0 ± 8.03—
Week 330.1 ± 16.1436.5 ± 17.1829.0 ± 10.20—
Week 437.5 ± 21.1946.9 ± 24.9136.8 ± 12.95—
Week 542.6 ± 24.0555.2 ± 31.5242.0 ± 14.76—
Week 648.9 ± 24.5761.8 ± 35.8048.8 ± 17.68—
Week 751.5 ± 28.3460.6 ± 35.7553.7 ± 19.32—
Week 861.3 ± 30.2973.6 ± 43.1158.1 ± 20.50—
SecondaryOverall Survival (OS) Per Kaplan Meier

OS is defined as the time from the start of treatment to the date of death due to any cause. If a subject was not known to have died, then OS was censored at the latest date the subject was known to be alive. The estimated survival probability at 1,2,6,12,18 months after start of treatment has been reported. (on or before the cut-off date). As planned in the SAP, this outcome measure is provided for all subjects instead of per age groups.

Time frame:
1 Month (M), 2 M, 6M, 12M, 18M
Reported as:
Number · survival probability in percentage
Overall Survival (OS) Per Kaplan Meier
survival probability in percentageAll Subjects (Group 1, Group 2 & Group 3)Group 4: Subjects >= 28 Days to < 2y
1 Month100 (100 to 100)—
2 Months100 (100 to 100)—
6 Months93.33 (80.74 to 97.80)—
12 Months88.83 (75.22 to 95.19)—
18 Months79.72 (64.64 to 88.90)—
SecondaryEvent-Free Survival (EFS) Per Kaplan-Meier Estimates

EFS is defined as the time from start of treatment to the date of hematologic disease relapse/progression, graft failure, or death due to any cause. If a subject was not known to have any event, then EFS was censored at the latest date the subject was known to be alive (on or before the cut-off date).The estimated probability of event free at 1,2,6,12,18 months after start of treatment has been reported. As planned in the SAP, this outcome measure is provided for all subjects instead of per age groups.

Time frame:
1 Month (M), 2 M, 6M, 12M, 18M
Reported as:
Number · prob. to be event free in percentage
Event-Free Survival (EFS) Per Kaplan-Meier Estimates
prob. to be event free in percentageAll Subjects (Group 1, Group 2 & Group 3)Group 4: Subjects >= 28 Days to < 2y
1 Month100 (100 to 100)—
2 Months97.78 (88.25 to 99.68)—
6 Months91.11 (78.03 to 96.57)—
12 Months86.61 (72.59 to 93.75)—
18 Months79.77 (64.72 to 88.93)—
SecondaryFailure-Free Survival (FFS)

Failure-free (FF) survival was defined as the time from start date of treatment to any of the following: hematologic relapse/progression, non-relapse mortality (NRM) or addition of new systemic acute GvHD treatment. The cumulative incidence (CI) of the onset of failure event at 1,2,6,12,18,24 months after start of treatment has been reported. As planned in the SAP, this outcome measure is provided for all subjects instead of per age groups.

Time frame:
1 Month (M), 2M, 6M, 12M, 18M, 24M
Reported as:
Number · CI of treatment failure in percentage
Failure-Free Survival (FFS)
CI of treatment failure in percentageAll Subjects (Group 1, Group 2, & Group 3)Group 4: Subjects >= 28 Days to < 2y
1 Month11.11 (4.02 to 22.27)—
2 Months13.33 (5.34 to 25.01)—
6 Months26.67 (14.72 to 40.18)—
12 Months26.67 (14.72 to 40.18)—
18 Months28.97 (16.48 to 42.68)—
24 Months28.97 (16.48 to 42.68)—
SecondaryNon Relapse Mortality (NRM)

NRM is defined as the time from start of treatment to date of death not preceded by hematologic disease relapse/progression. The cumulative incidence (CI) of non-relapse mortality at 1,2,6,12,18,24 months after start of treatment has been reported. As planned in the SAP, this outcome measure is provided for all subjects instead of per age groups.

Time frame:
Month (M)1, M2, M6, M12, M18, M24
Reported as:
Number · CI of NRM in percentage
Non Relapse Mortality (NRM)
CI of NRM in percentageAll Subjects (Group 1, Group 2 & Group 3)Group 4: Subjects >= 28 Days to < 2y
1 Month0.00 (NA to NA)—
2 Months0.00 (NA to NA)—
6 Months4.44 (0.79 to 13.47)—
12 Months8.95 (2.81 to 19.58)—
18 Months13.50 (5.40 to 25.31)—
24 Months13.50 (5.40 to 25.31)—
SecondaryIncidence of Malignancy Relapse (MR)/Progression

MR was defined as the time from start of treatment to hematologic malignancy relapse/progression. Calculated for patients with underlying hematologic malignant disease. The cumulative incidence (CI) of malignancy relapse/progression at 1,2,6,12,18,24 months after start of treatment has been reported. As planned in the SAP, this outcome measure is provided for all subjects instead of per age groups.

Time frame:
Month (M) 1, M2, M6, M12, M18, M24,
Reported as:
Number · CI of MR/progression in percentage
Incidence of Malignancy Relapse (MR)/Progression
CI of MR/progression in percentageAll Subjects (Group 1, Group 2 & Group 3)Group 4: Subjects >= 28 Days to < 2y
1 Month0.00 (NA to NA)—
2 Months3.70 (0.25 to 16.23)—
6 Months7.41 (1.24 to 21.37)—
12 Months7.41 (1.24 to 21.37)—
18 Months11.28 (2.74 to 26.60)—
24 Months11.28 (2.74 to 26.60)—
SecondaryCumulative Incidence (CI) of cGvHD

cGvHD is defined as the diagnosis of any cGvHD including mild, moderate, severe. Incidence of chronic GvHD was the time from the start of treatment to onset of chronic GvHD. Cumulative incidence of chronic GvHD was estimated, accounting for deaths without prior onset of chronic GvHD and hematologic disease relapse/progression as the competing risks. The cumulative incidence (CI) of cGvHD at 1, 2, 6, 12, 18 and 24 months after start of treatment has been reported. As planned in the SAP, this outcome measure is provided for all subjects instead of per age groups.

Time frame:
Month (M) 1, M2, M6, M12, M18, M24
Reported as:
Number · CI of chronic GvHD in percentage
Cumulative Incidence (CI) of cGvHD
CI of chronic GvHD in percentageAll Subjects (Group 1, Group 2 & Group 3)Group 4: Subjects >= 28 Days to < 2y
1 Month0.00 (NA to NA)—
2 Months2.22 (0.17 to 10.29)—
6 Months11.11 (4.01 to 22.29)—
12 Months20.07 (9.80 to 32.94)—
18 Months24.65 (13.11 to 38.09)—
24 Months24.65 (13.11 to 38.09)—
SecondaryGraft Failure

This was assessed by donor cell chimerism, defined as initial whole blood or marrow donor chimerism for those who had ≥5% donor cell chimerism at baseline. If donor cell chimerism declined to \<5% on subsequent measurements, graft failure was declared.

Time frame:
2 years
Reported as:
Number · Participants
Graft Failure
ParticipantsGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BIDGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2y
Graft Failure0.00.00.0—
SecondaryQuestionnaire on Acceptability and Palatability

Responses from the acceptability and palatability of the study drug (only for subjects administered with oral pediatric formulation starting treatment Day 1) were evaluated from a questionnaire completed by subjects, with the help from parents or caregivers as needed at the following visits: Day 1 (after first dose), Week 4 (1 month) ((after either morning or evening dose of that visit date), Week 24 (6 months) (after either morning or evening dose of that visit date). The choices for taste of the medication were, 'Very good', 'good', 'not good or bad', 'Bad', very bad. The choices for aftertaste of the medication were, 'Very good', 'Good', 'Not good or bad' , 'Bad', Very bad'. The choices for the smell of the medication were, 'Not good or bad' or 'Bad'.

Time frame:
Day 1, Week 4 (1 month), Week 24 (6 months)
Reported as:
Number · Participants
Questionnaire on Acceptability and Palatability
ParticipantsGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BID CapsuleGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID CapsuleGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BID LiquidGroup 4: Subjects >= 28 Days to < 2y
Day 1: Evaluator: Patient001—
Day 1: Evaluator: Legal guardian003—
Day 1: Evaluator: Parent142—
Day 1: Evaluator: Caregiver001—
Day 1: Evaluator: Health care professional131—
Day 1: Taste of Medicine: Very good003—
Day 1: Taste of Medicine: Good102—
Day 1: Taste of Medicine: Not good or bad130—
Day 1: Taste of Medicine: Bad020—
Day 1: Taste of Medicine: Very bad000—
Day 1: Taste of Medicine: Unable to answer the question023—
Day 1: Aftertaste of Medicine: Very good001—
Day 1: Aftertaste of Medicine: Good011—
Day 1: Aftertaste of Medicine: Not good or bad231—
Day 1: Aftertaste of Medicine: Bad020—
Day 1: Aftertaste of Medicine: Very bad001—
Day 1: Aftertaste of Medicine: Unable to answer the question014—
Day 1: Smell of Medicine: Very good001—
Day 1: Smell of Medicine: Good001—
Day 1: Smell of Medicine: Not good or bad243—
Day 1: Smell of Medicine: Bad010—
Day 1: Smell of Medicine: Very bad000—
Day 1: Smell of Medicine: Unable to answer the question023—
Week 4: Evaluatohr: Legal guardian012—
Week 4: Evaluator: Parent154—
Week 4: Evaluator: Health care professional102—
Week 4: Taste of Medicine: Very good000—
Week 4: Taste of Medicine: Good214—
Week 4: Taste of Medicine: Not good or bad041—
Week 4: Taste of Medicine: Bad000—
Week 4: Taste of Medicine: Very bad010—
Week 4: Taste of Medicine: Unable to answer the question003—
Week 4: Aftertaste of Medicine: Very good000—
Week 4: Aftertaste of Medicine: Good012—
Week 4: Aftertaste of Medicine: Not good or bad231—
Week 4: Aftertaste of Medicine: Bad010—
Week 4: Aftertaste of Medicine: Very bad000—
Week 4: Aftertaste of Medicine: Unable to answer the question015—
Week 4: Smell of Medicine: Very good001—
Week 4: Smell of Medicine: Good000—
Week 4: Smell of Medicine: Not good or bad253—
Week 4: Smell of Medicine: Bad001—
Week 4: Smell of Medicine: Very bad000—
Week 4: Smell of Medicine: Unable to answer the question013—
Week 24: Evaluator: Patient—11—
Week 24: Evaluator: Parent—10—
Week 24: Evaluator: Health care professional—01—
Week 24: Taste of Medicine: Very good—02—
Week 24: Taste of Medicine: Good—10—
Week 24: Taste of Medicine: Not good or bad—10—
Week 24: Taste of Medicine: Bad—00—
Week 24: Taste of Medicine: Very bad—00—
Week 24: Taste of Medicine: Unable to answer the question—00—
Week 24: Aftertaste of Medicine: Very good—01—
Week 24: Aftertaste of Medicine: Not good or bad—20—
Week 24: Aftertaste of Medicine: Unable to answer the question—01—
Week 24: Smell of Medicine: Very good—01—
Week 24: Smell of Medicine: Good—01—
Week 24: Smell of Medicine: Not good or bad—20—
Week 24: Smell of Medicine: Bad—00—
Week 24: Smell of Medicine: Very bad—00—
Week 24: Smell of Medicine: Unable to answer the question—00—
SecondaryPK Parameter - Maximum Serum Concentration (Cmax) Versus Efficacy

To assess pharmacokinetic/pharmacodynamic relationship (comparison of Cmax with efficacy). Cmax: The maximum (peak) observed plasma drug concentration.

Time frame:
24 weeks

No measurements were reported for this outcome.

SecondaryPK Parameter: Minimum Serum Concentration (Ctrough) Versus Safety

To assess pharmacokinetic/pharmacodynamic relationships (comparison of Ctrough with safety). Ctrough: The minimum observed plasma concentration at the end of an administration interval (corresponding to the pre-dose concentration prior to the following administration).

Time frame:
24 weeks

No measurements were reported for this outcome.

SecondaryPK Parameter: Cmax Versus Safety

To assess pharmacokinetic/pharmacodynamics relationship (comparison of Cmax with safety). Cmax: The maximum (peak) observed plasma drug concentration.

Time frame:
24 weeks

No measurements were reported for this outcome.

SecondaryPK Parameter: Ctrough Versus Efficacy

To assess pharmacokinetic/pharmacodynamics relationship (comparison of Ctrough with efficacy). Ctrough: The minimum observed plasma concentration at the end of an administration interval (corresponding to the pre-dose concentration prior to the following administration).

Time frame:
24 weeks

No measurements were reported for this outcome.

SecondaryPK Parameter: Profile of Biomarker Concentration Changes Across Different AUC Quantile Groups

Describe the relationship between AUC and PD biomarkers. Provide profile of biomarker concentration changes across different AUC quantile groups from baseline. This analysis includes subjects from F12201 study. Population was divided by four level of exposure using AUClast Day 1 quartiles. As planned in SAP, this outcome measure is provided for all subjects instead of per age groups.

Time frame:
Week 4
Reported as:
Median · Week 4 percentage change from baseline
PK Parameter: Profile of Biomarker Concentration Changes Across Different AUC Quantile Groups
Week 4 percentage change from baselineAUClast Day 1: 1st QuartileAUClast Day 1: 2nd QuartileAUClast Day 1: 3rd QuartileAUClast Day 1: 4th QuartileGroup 4: Subjects >= 28 Days to < 2y
Biomarker: IL100.00 (-85.64 to 225.33)-22.43 (-76.22 to 0.00)-79.71 (-89.63 to -47.49)-50.72 (-58.01 to 73.55)—
Biomarker: IL6-59.48 (-69.78 to 0.00)-10.40 (-80.48 to 0.00)0.00 (-67.78 to 0.00)181.48 (0.00 to 376.54)—
Biomarker: IL8-63.63 (-70.48 to -21.03)42.57 (-22.15 to 201.65)31.79 (-48.56 to 329.67)60.02 (-41.74 to 280.49)—
Biomarker: TNFA-61.45 (-74.05 to -56.96)0.00 (-31.03 to 33.67)-35.34 (-65.90 to -1.41)21.49 (-48.52 to 311.76)—
Biomarker: CD4 Assay (CD4 T cells) (%),-40.49 (-42.67 to -35.51)98.07 (16.40 to 206.34)-3.07 (-17.66 to 115.79)-42.67 (-62.47 to 92.71)—
Biomarker: CD8 Assay (CD8 T cells) (%),-51.80 (-69.95 to -20.07)64.71 (6.18 to 118.32)104.17 (-34.38 to 270.84)33.77 (-76.27 to 114.61)—
Biomarker: FOXP3 Assay (Treg cells) (%)115.79 (-26.03 to 124.24)43.15 (2.08 to 52.17)57.14 (-16.49 to 79.73)-11.11 (-60.56 to 119.05)—
Biomarker: IL14A Assay (Th17 cells) (%)5.33 (-33.75 to 10.78)140.91 (-25.53 to 570.83)-7.69 (-18.92 to 131.25)38.73 (-57.47 to 203.45)—
Biomarker: LRP5 Assay (B cells) (%),-15.00 (-30.00 to 122.78)25.78 (-42.86 to 300.00)140.00 (37.80 to 142.86)105.26 (-30.77 to 650.00)—
MVD Assay (NK cells) (%)-23.82 (-24.21 to 65.52)61.81 (34.74 to 98.53)22.54 (-18.99 to 69.08)-0.71 (-34.19 to 72.62)—
SecondaryPK Parameter: Cmax Versus PD Biomarkers

To assess pharmacokinetic/pharmacodynamic relationship (comparison of Cmax with PD biomarkers). Cmax: The maximum (peak) observed plasma drug concentration.

Time frame:
24 weeks

No measurements were reported for this outcome.

SecondaryPK Parameter: Ctrough Versus PD Biomarkers

To assess pharmacokinetic/pharmacodynamics relationship (Ctrough with PD biomarkers). Ctrough: The minimum observed plasma concentration at the end of an administration interval (corresponding to the pre-dose concentration prior to the following administration).

Time frame:
24 weeks

No measurements were reported for this outcome.

SecondaryPercentage of Patients Who Achieved Best Overall Response (BOR) up to Day 28

The best overall response (BOR) was defined as percentage of participants with (complete response (CR) or partial response (PR) at any time point and up to and including Day 28 and before the start of additional systemic therapy for acute GvHD (aGvHD).

Time frame:
Up to 28 days and before start of additional aGvHD therapy
Reported as:
Number · Percentage of participants
Percentage of Patients Who Achieved Best Overall Response (BOR) up to Day 28
Percentage of participantsGroup 1: ≥ 12y to < 18y - RUX 10mg BIDGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2y
Percentage of Patients Who Achieved Best Overall Response (BOR) up to Day 2894.4 (76.2 to 99.7)91.7 (66.1 to 99.6)93.3 (72.1 to 99.7)—
Post-hocAll Collected Deaths

Adverse events and on-treatment deaths were collected from the first dose of study treatment up to 30 days after last dose of study medication, for a maximum duration of 380 days. Post-treatment survival follow-up deaths were collected 31 days after last dose of study medication until the end of the study, up to approx. 23 months.

Time frame:
AEs & On-treatment deaths: Up to approx. 380 days (13 months), Post-treatment survival follow-up deaths: Up to approx. 23 months after the end of treatment
Reported as:
Number · Participants
All Collected Deaths
ParticipantsGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg BIDGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2y
Total deaths621—
On-treatment deaths000—
Post-treatment deaths621—

Adverse events

Collected over Adverse events and on-treatment deaths were collected from the first dose of study treatment up to 30 days after last dose of study medication, for a maximum duration of 380 days. Post-treatment survival follow-up deaths were collected 31 days after last dose of study medication until the end of the study, up to approx. 23 months.. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Group 1: Subjects >=12y - <18y - RUX 10mg (On-treatment)0/18 (0%)11/18 (61.1%)18/18 (100%)
Group 2: Subjects >=6y - <12y - RUX 5mg (On-treatment)0/12 (0%)7/12 (58.3%)12/12 (100%)
Group 3: Subjects >=2y - <6y - RUX 4mg/m2 (On-treatment)0/15 (0%)6/15 (40%)15/15 (100%)
All Subjects0/45 (0%)24/45 (53.3%)45/45 (100%)
Group 1: Subjects ≥ 12y to < 18y - RUX 10mg (Post-treatment Survival Follow-up)6/18 (33.3%)——
Group 2: Subjects ≥ 6y to < 12y - RUX 5mg (Post-treatment Survival Follow-up)2/12 (16.7%)——
Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m2 (Post-treatment Survival Follow-up)1/15 (6.7%)——
Group 4: Subjects >= 28 Days to < 2y———
Most frequent serious events
Showing 10 of 41
Most frequent serious events
EventGroup 1: Subjects >=12y - <18y - RUX 10mg (On-treatment)Group 2: Subjects >=6y - <12y - RUX 5mg (On-treatment)Group 3: Subjects >=2y - <6y - RUX 4mg/m2 (On-treatment)All SubjectsGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg (Post-treatment Survival Follow-up)Group 2: Subjects ≥ 6y to < 12y - RUX 5mg (Post-treatment Survival Follow-up)Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m2 (Post-treatment Survival Follow-up)Group 4: Subjects >= 28 Days to < 2y
PyrexiaGeneral disorders1/181/122/154/45————
Septic shockInfections and infestations2/180/120/152/45————
Acute kidney injuryRenal and urinary disorders2/180/120/152/45————
Febrile neutropeniaBlood and lymphatic system disorders1/181/120/152/45————
Pericardial effusionCardiac disorders0/181/120/151/45————
Intestinal perforationGastrointestinal disorders0/181/120/151/45————
Pancreatitis acuteGastrointestinal disorders0/181/120/151/45————
Adenovirus infectionInfections and infestations0/181/120/151/45————
Device related infectionInfections and infestations0/181/120/151/45————
SepsisInfections and infestations0/181/121/152/45————
Most frequent other events
Showing 10 of 171
Most frequent other events
EventGroup 1: Subjects >=12y - <18y - RUX 10mg (On-treatment)Group 2: Subjects >=6y - <12y - RUX 5mg (On-treatment)Group 3: Subjects >=2y - <6y - RUX 4mg/m2 (On-treatment)All SubjectsGroup 1: Subjects ≥ 12y to < 18y - RUX 10mg (Post-treatment Survival Follow-up)Group 2: Subjects ≥ 6y to < 12y - RUX 5mg (Post-treatment Survival Follow-up)Group 3: Subjects ≥ 2y to < 6y - RUX 4mg/m2 (Post-treatment Survival Follow-up)Group 4: Subjects >= 28 Days to < 2y
AnaemiaBlood and lymphatic system disorders6/185/129/1520/45————
Platelet count decreasedInvestigations0/182/126/158/45————
NeutropeniaBlood and lymphatic system disorders6/182/121/159/45————
ThrombocytopeniaBlood and lymphatic system disorders6/180/122/158/45————
Neutrophil count decreasedInvestigations5/182/125/1512/45————
White blood cell count decreasedInvestigations0/182/125/157/45————
HypertensionVascular disorders2/182/125/159/45————
Alanine aminotransferase increasedInvestigations5/182/122/159/45————
Cytomegalovirus test positiveInvestigations1/181/124/156/45————
HypoalbuminaemiaMetabolism and nutrition disorders2/183/120/155/45————

Baseline characteristics

The Full Analysis Set (FAS) comprised all subjects to whom study treatment was assigned and who received at least one dose of study treatment. No subjects were enrolled in Group 4.

Age, Continuous
Age, Continuous(Months)Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BIDGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2yTotal
Mean172.7 ± 18.9486.1 ± 11.0845.5 ± 14.57—107.2 ± 58.43
Sex: Female, Male
Sex: Female, Male(Participants)Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BIDGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2yTotal
Female575017
Male13510028
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Group 1: Subjects ≥ 12y to < 18y - RUX 10mg BIDGroup 2: Subjects ≥ 6y to < 12y - RUX 5mg BIDGroup 3: Subjects ≥ 2y to < 6y - RUX 4mg/m^2 BIDGroup 4: Subjects >= 28 Days to < 2yTotal
White1154—20
Asian335—11
Missing -Note: race is not collected in France446—14
08

Study locations

19 sites
  • Novartis Investigative Site
    Gent, 9000, Belgium
  • Novartis Investigative Site
    Laeken, 1020, Belgium
  • Novartis Investigative Site
    Montreal, Quebec H3T 1C5, Canada
  • Novartis Investigative Site
    Copenhagen, DK-2100, Denmark
  • Novartis Investigative Site
    Lille, 59000, France
  • Novartis Investigative Site
    Nantes Cedex 01, 44093, France
  • Novartis Investigative Site
    Paris 15, 75015, France
  • Novartis Investigative Site
    Paris, 75019, France
  • Novartis Investigative Site
    Rennes, 35022, France
  • Novartis Investigative Site
    Vandoeuvre Les Nancy, 54511, France
  • Novartis Investigative Site
    Genova, GE 16147, Italy
  • Novartis Investigative Site
    Roma, RM 00165, Italy
  • Novartis Investigative Site
    Nagoya, Aichi 466 8560, Japan
  • Novartis Investigative Site
    Saitama, 330 8777, Japan
  • Novartis Investigative Site
    Seoul, 03080, Korea, Republic of
  • Novartis Investigative Site
    Barcelona, Catalunya 08035, Spain
  • Novartis Investigative Site
    Barcelona, 08041, Spain
  • Novartis Investigative Site
    Madrid, 28009, Spain
  • Novartis Investigative Site
    Madrid, 28046, Spain
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Yes — Novartis is committed to sharing with qualified external researchers, access to patient-level data and supporting clinical documents from eligible studies. These requests are reviewed and approved by an independent expert panel on the basis of scientific merit. All data provided is anonymized to respect the privacy of patients who have participated in the trial in line with applicable laws and regulations. This trial data is currently available according to the process described on www.clinicalstudydatarequest.com.

Data sharing details ↗ · www.clinicalstudydatarequest.com

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Feb 2019 to primary completion in Mar 2021, 24 months.

Results were first posted in Nov 2024, 3 years 7 months after primary completion.

Of 39 phase 1/2 interventional studies under Graft vs Host Disease, half reached primary completion within 55 months of starting (the median), counting those still running; a quarter within 35 and three quarters within 76. This study's 24 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 20, 2018
First posted
Apr 9, 2018
StartActual
Feb 21, 2019
Primary completionActual
Mar 11, 2021
CompletionActual
Feb 2, 2023
Results first posted
Nov 8, 2024
Last update
May 4, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 4, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03491215
Responsible party
Sponsor
First posted
Apr 9, 2018
Start date
Feb 21, 2019
Primary completion
Mar 11, 2021
Completion
Feb 2, 2023
Results posted
Nov 8, 2024
Last update
May 4, 2025

Study contacts

Novartis Pharmaceuticals
study director · Novartis Pharmaceuticals

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Discussion

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Studies of the drug tested here: Ruxolitinib

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