ClinicalTrials.gg
CompletedNCT03383692Updated Dec 11, 2023Results posted

Study of DS-8201a for Participants With Advanced Solid Malignant Tumors

A Phase 1 interventional study of DS-8201a and Ritonavir in Neoplasm Metastasis, sponsored by Daiichi Sankyo Co., Ltd.. Completed at 10 sites in 3 countries. Open to participants aged 20 Years and older. Per ClinicalTrials.gov, last updated 2023-12-11.

Sponsored by Daiichi Sankyo Co., Ltd. · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
40
Allocation
Non-randomized
Ages
20 Years and older
Sex
All
01

Study summary

HER2-positive cancer is a cancer that tests positive for a protein called human epidermal growth factor receptor 2 (HER2). HER2 promotes the growth of certain cancer cells. This study will test an experimental drug called DS-8201a that has not been approved by the health authorities yet.

DS-8201a will be tested for safety in patients with advanced solid malignant tumors that test positive for HER2. It also will test how DS-8201a moves within the body (pharmacokinetics).

Read the detailed description

The expected time from the first subject's enrollment until the last subject's enrollment is approximately 8.5 months. The screening period is 28 days and each cycle of treatment is 21 days.

The data for the primary analysis will cutoff after all subjects have either discontinued the study or completed at least 3 cycles, whichever comes first. After the primary analysis, the main study will be closed and transition to the extension period.

Depending on the preliminary results of Cohort 1, Sponsor may decide whether Cohort 2 will be opened or not.

The number of treatment cycles is not fixed in this study. Subjects who continue to derive clinical benefit from the study drug in the absence of withdrawal of consent, progressive disease (PD), or unacceptable toxicity may continue the study drug.

02

Conditions studied

  • Neoplasm Metastasis

Keywords

  • Unresectable or metastatic solid malignant tumors
  • Solid malignant tumors
  • Oncology
  • HER2
  • Antibody drug conjugate
  • ADC
03

In context

Neoplasm Metastasis

4,040 studies on the registry are indexed under Neoplasm Metastasis; 886 are open to participants now.

This study's enrollment of 40 is below the median of 50 across 3,268 interventional studies indexed under Neoplasm Metastasis.

Browse Neoplasm Metastasis studies →

Lead sponsor

Daiichi Sankyo Co., Ltd. is the lead sponsor of 73 studies on the registry; none are open to participants now.

Of its 10 completed or terminated interventional studies of FDA-regulated products, 8 (80%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years and older
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

  • Has a documented unresectable or solid malignant tumor, with expression [immunohistochemistry (IHC) 3+, 2+, or 1+ and/or in situ hybridization (ISH) +], Next Generation Sequencing, or other analysis techniques as appropriate] that is to or intolerable with at least one prior systemic chemotherapy regimen, or for which no standard treatment is available
  • Has a (LVEF) ≥ 50%
  • Has an performance status (ECOG PS) score of 0 or 1

Exclusion criteria

Exclusion Criteria:

  • Has a for receiving ritonavir or itraconazole according to the prescribing information
  • Has a medical history of myocardial infarction within 6 months before enrollment or symptomatic congestive heart failure
Terms in these criteria, in plain language(7)

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.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

HER2

HER2 is a protein, made from the ERBB2 gene, that drives the growth of some cancers. A study may look for a level of the protein, extra copies of the gene, or a particular change in it.

In breast cancer, protein tests are read as HER2-positive, HER2-low or HER2-negative; other cancers use their own rules. Check which test result the study requires.

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.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
40 participants (actual)

Study arms

  • Experimental
    Cohort 1: DS-8201a + Ritonavir

    DS-8201a will be administered as an intravenous (IV) solution once every 3 weeks (Q3W) + Ritonavir twice daily (BID) on Day 17 of Cycle 2 until Day 21 of Cycle 3

    Drug: DS-8201a · Drug: Ritonavir

  • Experimental
    Cohort 2: DS-8201a + Itraconazole

    DS-8201a will be administered as an intravenous (IV) solution once every 3 weeks (Q3W) + Itraconazole BID on Day 17 of Cycle 2 followed by 200 mg daily (QD) until Day 21 of Cycle 3

    Drug: DS-8201a · Drug: Itraconazole

Interventions

  • DS-8201a is provided as a sterile lyophilized powder of DS-8201a in a glass vial, which will be dissolved and administered as an intravenous (IV) solution

  • Ritonavir is a OATP1B inhibitor; an antiretroviral tablet for oral administration

    Also known as: Norvir

  • DrugItraconazole

    Itraconazole is a CYP3A inhibitor; an antifungal tablet for oral administration

    Also known as: Sporanox, Orungal

06

What researchers measure

Primary outcomes

  1. Pharmacokinetic Parameter of Maximum (Peak) Observed Serum Concentration (Cmax) Following Treatment With DS-8201a and Ritonavir - Cohort 1

    Maximum concentration (Cmax) was assessed for DS-8201a and total Anti-HER2 antibody.

    Time frame: Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)

  2. Pharmacokinetic Parameter of Maximum (Peak) Observed Serum Concentration (Cmax) For MAAA-1181a Following Treatment With DS-8201a and Ritonavir - Cohort 1

    Maximum concentration (Cmax) was assessed for MAAA-1181a.

    Time frame: Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)

  3. Pharmacokinetic Parameter of Area Under the Serum Concentration-time Curve Following Treatment With DS-8201a and Ritonavir - Cohort 1

    Area under the serum concentration-time curve from time zero to 17 days (AUC17d) and during the dosing interval (AUCtau) for DS-8201a and total anti-HER2 antibody were assessed.

    Time frame: Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)

  4. Pharmacokinetic Parameter of Area Under the Serum Concentration-time Curve of MAAA-1181a Following Treatment With DS-8201a and Ritonavir - Cohort 1

    Area under the serum concentration-time curve from time zero to 17 days (AUC17d) and during the dosing interval (AUCtau) were assessed for MAAA-1181a.

    Time frame: Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)

  5. Pharmacokinetic Parameter of Maximum (Peak) Observed Serum Concentration (Cmax) Following Treatment With DS-8201a and Itraconazole - Cohort 2

    Maximum concentration (Cmax) was assessed for DS-8201a and total Anti-HER2 antibody.

    Time frame: Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)

  6. Pharmacokinetic Parameter of Maximum (Peak) Observed Serum Concentration (Cmax) of MAAA-1181a Following Treatment With DS-8201a and Itraconazole - Cohort 2

    Maximum concentration (Cmax) was assessed for MAAA-1181a.

    Time frame: Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)

  7. Pharmacokinetic Parameter of Area Under the Serum Concentration-time Curve Following Treatment With DS-8201a and Itraconazole - Cohort 2

    Area under the serum concentration-time curve from time zero to 17 days (AUC17d) and during the dosing interval (AUCtau) were assessed for DS-8201a and total anti-HER2 antibody.

    Time frame: Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)

  8. Pharmacokinetic Parameter of Area Under the Serum Concentration-time Curve of MAAA-1181a Following Treatment With DS-8201a and Itraconazole - Cohort 2

    Area under the serum concentration-time curve from time zero to 17 days (AUC17d) and during the dosing interval (AUCtau) were assessed for MAAA-1181a.

    Time frame: Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)

Secondary outcomes

  1. Best Objective Response as Confirmed By The Investigator's Assessment in Participants With HER2-Expressing Advanced Solid Malignant Tumors

    Best objective response (BOR) was assessed by the investigator based on Response Evaluation Criteria In Solid Tumors (RECIST) version 1.1. Completed response (CR) was defined as a disappearance of all target lesions, PR was defined as at least a 30% decrease in the sum of diameters of target lesions, and stable disease (SD) was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease (PD; at least a 20% increase in the sum of diameters of target lesions.

    Time frame: Baseline up to disease progression, death, lost to follow up, or study discontinuation (whichever comes first), up to approximately 9 months post-dose

  2. Objective Response Ratio (ORR) as Confirmed By The Investigator's Assessment in Participants With HER2-Expressing Advanced Solid Malignant Tumors

    Objective response ratio (ORR) was defined as the proportion of participants who achieved CR and PR as assessed by the investigator based on Response Evaluation Criteria In Solid Tumors (RECIST) version 1.1. CR was defined as a disappearance of all target lesions and PR was defined as at least a 30% decrease in the sum of diameters of target lesions.

    Time frame: Baseline up to disease progression, death, lost to follow up, or study discontinuation (whichever comes first), up to approximately 9 months post-dose

  3. Objective Response Rate as Confirmed By The Investigator's Assessment in Participants With HER2-Expressing Advanced Solid Malignant Tumors

    Objective response rate (defined as participants who achieved CR and PR) was assessed by the investigator based on Response Evaluation Criteria In Solid Tumors (RECIST) version 1.1. CR was defined as a disappearance of all target lesions and PR was defined as at least a 30% decrease in the sum of diameters of target lesions. ORR with confirmation is Objective Response Rate applying a confirmed response of CR/PR in RECIST version 1.1.

    Time frame: Baseline up to disease progression, death, lost to follow up, or study discontinuation (whichever comes first), up to approximately 9 months post-dose

07

Results

Posted Jun 14, 2021

Participant flow

A total of 40 participants who met all inclusion criteria and no exclusion criteria were enrolled and received treatment at 10 study centers in Japan, South Korea, and Taiwan.

Participant flow — Overall Study
MilestoneCohort 1: DS-8201a + RitonavirCohort 2: DS-8201a + Itraconazole
Started1723
Completed1119
Not completed64
Withdrew: Progressive disease as per recist33
Withdrew: Clinical progression01
Withdrew: Adverse event30

Outcome measures

PrimaryPharmacokinetic Parameter of Maximum (Peak) Observed Serum Concentration (Cmax) Following Treatment With DS-8201a and Ritonavir - Cohort 1

Maximum concentration (Cmax) was assessed for DS-8201a and total Anti-HER2 antibody.

Time frame:
Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)
Reported as:
Mean · ug/mL
Pharmacokinetic Parameter of Maximum (Peak) Observed Serum Concentration (Cmax) Following Treatment With DS-8201a and Ritonavir - Cohort 1
ug/mLCohort 1: DS-8201a + Ritonavir
DS-8201a, Cycle 2: DS-8201a only133 ± 25.5
DS-8201a, Cycle 3: DS-8201a + ritonavir140 ± 23.0
Total Anti-HER2 antibody, Cycle 2: DS-8201a only121 ± 22.2
Total Anti-HER2 antibody, Cycle 3: DS-8201a + ritonavir126 ± 23.1
PrimaryPharmacokinetic Parameter of Maximum (Peak) Observed Serum Concentration (Cmax) For MAAA-1181a Following Treatment With DS-8201a and Ritonavir - Cohort 1

Maximum concentration (Cmax) was assessed for MAAA-1181a.

Time frame:
Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)
Reported as:
Mean · ng/mL
Pharmacokinetic Parameter of Maximum (Peak) Observed Serum Concentration (Cmax) For MAAA-1181a Following Treatment With DS-8201a and Ritonavir - Cohort 1
ng/mLCohort 1: DS-8201a + Ritonavir
MAAA-1181a, Cycle 2: DS-8201a only8.98 ± 2.83
MAAA-1181a, Cycle 3: DS-8201a + ritonavir8.95 ± 3.68
PrimaryPharmacokinetic Parameter of Area Under the Serum Concentration-time Curve Following Treatment With DS-8201a and Ritonavir - Cohort 1

Area under the serum concentration-time curve from time zero to 17 days (AUC17d) and during the dosing interval (AUCtau) for DS-8201a and total anti-HER2 antibody were assessed.

Time frame:
Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)
Reported as:
Mean · ug*d/mL
Pharmacokinetic Parameter of Area Under the Serum Concentration-time Curve Following Treatment With DS-8201a and Ritonavir - Cohort 1
ug*d/mLCohort 1: DS-8201a + Ritonavir
DS-8201a, Cycle 2 (DS-8201a only): AUC17d650 ± 168.0
DS-8201a, Cycle 2 (DS-8201a only): AUCtau701 ± 185
DS-8201a, Cycle 3 (DS-8201a + ritonavir): AUC17d754 ± 137.0
DS-8201a, Cycle 3 (DS-8201a + ritonavir): AUCtau810 ± 153.0
Total Anti-HER2 antibody, Cycle 2 (DS-8201a only): AUC17d723 ± 191
Total Anti-HER2 antibody, Cycle 2 (DS-8201a only): AUCtau791 ± 217
Total Anti-HER2 antibody, Cycle 3 (DS-8201a + ritonavir): AUC17d796 ± 155
Total Anti-HER2 antibody, Cycle 3 (DS-8201a + ritonavir): AUCtau860 ± 170
PrimaryPharmacokinetic Parameter of Area Under the Serum Concentration-time Curve of MAAA-1181a Following Treatment With DS-8201a and Ritonavir - Cohort 1

Area under the serum concentration-time curve from time zero to 17 days (AUC17d) and during the dosing interval (AUCtau) were assessed for MAAA-1181a.

Time frame:
Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)
Reported as:
Mean · ng*d/mL
Pharmacokinetic Parameter of Area Under the Serum Concentration-time Curve of MAAA-1181a Following Treatment With DS-8201a and Ritonavir - Cohort 1
ng*d/mLCohort 1: DS-8201a + Ritonavir
MAAA-1181a, Cycle 2 (DS-8201a only): AUC17d32.7 ± 7.45
MAAA-1181a, Cycle 2 (DS-8201a only): AUCtau35.0 ± 8.10
MAAA-1181a, Cycle 3 (DS-8201a + ritonavir): AUC17d37.2 ± 6.93
MAAA-1181a, Cycle 3 (DS-8201a + ritonavir): AUCtau39.2 ± 7.98
PrimaryPharmacokinetic Parameter of Maximum (Peak) Observed Serum Concentration (Cmax) Following Treatment With DS-8201a and Itraconazole - Cohort 2

Maximum concentration (Cmax) was assessed for DS-8201a and total Anti-HER2 antibody.

Time frame:
Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)
Reported as:
Mean · ug/mL
Pharmacokinetic Parameter of Maximum (Peak) Observed Serum Concentration (Cmax) Following Treatment With DS-8201a and Itraconazole - Cohort 2
ug/mLCohort 1: DS-8201a + Itraconazole
DS-8201a, Cycle 2: DS-8201a only139 ± 23.6
DS-8201a, Cycle 3: DS-8201a + ritonavir142 ± 23.9
Total Anti-HER2 antibody, Cycle 2: DS-8201a only119 ± 19.1
Total Anti-HER2 antibody, Cycle 3: DS-8201a + ritonavir130 ± 18.2
PrimaryPharmacokinetic Parameter of Maximum (Peak) Observed Serum Concentration (Cmax) of MAAA-1181a Following Treatment With DS-8201a and Itraconazole - Cohort 2

Maximum concentration (Cmax) was assessed for MAAA-1181a.

Time frame:
Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)
Reported as:
Mean · ng/mL
Pharmacokinetic Parameter of Maximum (Peak) Observed Serum Concentration (Cmax) of MAAA-1181a Following Treatment With DS-8201a and Itraconazole - Cohort 2
ng/mLCohort 2: DS-8201a + Itraconazole
MAAA-1181a, Cycle 2: DS-8201a only8.65 ± 2.03
MAAA-1181a, Cycle 3: DS-8201a + ritonavir8.93 ± 1.77
PrimaryPharmacokinetic Parameter of Area Under the Serum Concentration-time Curve Following Treatment With DS-8201a and Itraconazole - Cohort 2

Area under the serum concentration-time curve from time zero to 17 days (AUC17d) and during the dosing interval (AUCtau) were assessed for DS-8201a and total anti-HER2 antibody.

Time frame:
Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)
Reported as:
Mean · ug*d/mL
Pharmacokinetic Parameter of Area Under the Serum Concentration-time Curve Following Treatment With DS-8201a and Itraconazole - Cohort 2
ug*d/mLCohort 2: DS-8201a + Itraconazole
DS-8201a, Cycle 2 (DS-8201a only): AUC17d644 ± 188
DS-8201a, Cycle 2 (DS-8201a only): AUCtau706 ± 211
DS-8201a, Cycle 3 (DS-8201a + ritonavir): AUC17d710 ± 187
DS-8201a, Cycle 3 (DS-8201a + ritonavir): AUCtau789 ± 217
Total Anti-HER2 antibody, Cycle 2 (DS-8201a only): AUC17d707 ± 194
Total Anti-HER2 antibody, Cycle 2 (DS-8201a only): AUCtau790 ± 224
Total Anti-HER2 antibody, Cycle 3 (DS-8201a + ritonavir): AUC17d781 ± 196
Total Anti-HER2 antibody, Cycle 3 (DS-8201a + ritonavir): AUCtau883 ± 238
PrimaryPharmacokinetic Parameter of Area Under the Serum Concentration-time Curve of MAAA-1181a Following Treatment With DS-8201a and Itraconazole - Cohort 2

Area under the serum concentration-time curve from time zero to 17 days (AUC17d) and during the dosing interval (AUCtau) were assessed for MAAA-1181a.

Time frame:
Cycle 1: Day 1, pre-dose and end of infusion (EOI); Cycles 2 and 3: Day 1, pre-dose, EOI, 2 hours, 4 hours, 7 hours; Day 2, 4, 8, 12, 17, and 22; Cycles 4, 6 and 8: Day 1, pre-dose and EOI (each cycle is 22 days)
Reported as:
Mean · ng*d/mL
Pharmacokinetic Parameter of Area Under the Serum Concentration-time Curve of MAAA-1181a Following Treatment With DS-8201a and Itraconazole - Cohort 2
ng*d/mLCohort 2: DS-8201a + Itraconazole
MAAA-1181a, Cycle 2 (DS-8201a only): AUC17d29.9 ± 8.31
MAAA-1181a, Cycle 2 (DS-8201a only): AUCtau32.4 ± 9.21
MAAA-1181a, Cycle 3 (DS-8201a + ritonavir): AUC17d34.8 ± 8.04
MAAA-1181a, Cycle 3 (DS-8201a + ritonavir): AUCtau37.7 ± 8.87
SecondaryBest Objective Response as Confirmed By The Investigator's Assessment in Participants With HER2-Expressing Advanced Solid Malignant Tumors

Best objective response (BOR) was assessed by the investigator based on Response Evaluation Criteria In Solid Tumors (RECIST) version 1.1. Completed response (CR) was defined as a disappearance of all target lesions, PR was defined as at least a 30% decrease in the sum of diameters of target lesions, and stable disease (SD) was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease (PD; at least a 20% increase in the sum of diameters of target lesions.

Time frame:
Baseline up to disease progression, death, lost to follow up, or study discontinuation (whichever comes first), up to approximately 9 months post-dose
Reported as:
Count of participants · Participants
Best Objective Response as Confirmed By The Investigator's Assessment in Participants With HER2-Expressing Advanced Solid Malignant Tumors
ParticipantsCohort 1: DS-8201a + RitonavirCohort 2: DS-8201a + Itraconazole
Complete response (CR)00
Partial response (PR)910
Stable disease (SD)88
Non-CR/Non-PR00
Progressive disease (PD)01
Non evaluable00
SecondaryObjective Response Ratio (ORR) as Confirmed By The Investigator's Assessment in Participants With HER2-Expressing Advanced Solid Malignant Tumors

Objective response ratio (ORR) was defined as the proportion of participants who achieved CR and PR as assessed by the investigator based on Response Evaluation Criteria In Solid Tumors (RECIST) version 1.1. CR was defined as a disappearance of all target lesions and PR was defined as at least a 30% decrease in the sum of diameters of target lesions.

Time frame:
Baseline up to disease progression, death, lost to follow up, or study discontinuation (whichever comes first), up to approximately 9 months post-dose
Reported as:
Count of participants · Participants
Objective Response Ratio (ORR) as Confirmed By The Investigator's Assessment in Participants With HER2-Expressing Advanced Solid Malignant Tumors
ParticipantsCohort 1: DS-8201a + RitonavirCohort 2: DS-8201a + Itraconazole
Objective Response Ratio (ORR) as Confirmed By The Investigator's Assessment in Participants With HER2-Expressing Advanced Solid Malignant Tumors910
SecondaryObjective Response Rate as Confirmed By The Investigator's Assessment in Participants With HER2-Expressing Advanced Solid Malignant Tumors

Objective response rate (defined as participants who achieved CR and PR) was assessed by the investigator based on Response Evaluation Criteria In Solid Tumors (RECIST) version 1.1. CR was defined as a disappearance of all target lesions and PR was defined as at least a 30% decrease in the sum of diameters of target lesions. ORR with confirmation is Objective Response Rate applying a confirmed response of CR/PR in RECIST version 1.1.

Time frame:
Baseline up to disease progression, death, lost to follow up, or study discontinuation (whichever comes first), up to approximately 9 months post-dose
Reported as:
Count of participants · Participants
Objective Response Rate as Confirmed By The Investigator's Assessment in Participants With HER2-Expressing Advanced Solid Malignant Tumors
ParticipantsCohort 1: DS-8201a + RitonavirCohort 2: DS-8201a + Itraconazole
Objective Response Rate as Confirmed By The Investigator's Assessment in Participants With HER2-Expressing Advanced Solid Malignant Tumors87

Adverse events

Collected over Adverse event data were collected from baseline up to approximately 9 months post-dose.. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Cohort 1: DS-8201a + Ritonavir1/17 (5.9%)2/17 (11.8%)17/17 (100%)
Cohort 2: DS-8201a + Itraconazole0/23 (0%)3/23 (13%)22/23 (95.7%)
Most frequent serious events
Most frequent serious events
EventCohort 1: DS-8201a + RitonavirCohort 2: DS-8201a + Itraconazole
Disease progressionGeneral disorders1/170/23
PneumonitisRespiratory, thoracic and mediastinal disorders1/170/23
PyrexiaGeneral disorders0/171/23
DiarrhoeaGastrointestinal disorders0/171/23
IleusGastrointestinal disorders0/171/23
NauseaGastrointestinal disorders0/171/23
VomitingGastrointestinal disorders0/171/23
SepsisInfections and infestations0/171/23
Most frequent other events
Showing 10 of 84
Most frequent other events
EventCohort 1: DS-8201a + RitonavirCohort 2: DS-8201a + Itraconazole
NauseaGastrointestinal disorders17/1715/23
Decreased appetiteMetabolism and nutrition disorders13/179/23
Platelet count decreasedInvestigations9/174/23
ConstipationGastrointestinal disorders8/177/23
DiarrhoeaGastrointestinal disorders8/175/23
White blood cell count decreasedInvestigations7/177/23
Alanine aminotransferase increasedInvestigations7/173/23
AnaemiaBlood and lymphatic system disorders6/175/23
AlopeciaSkin and subcutaneous tissue disorders6/177/23
Neutrophil count decreasedInvestigations6/178/23

Baseline characteristics

Demographics were assessed in the Safety Analysis Set.

Age, Continuous
Age, Continuous(years)Cohort 1: DS-8201a + RitonavirCohort 2: DS-8201a + ItraconazoleTotal
Mean60.5 ± 9.4553.5 ± 12.9156.5 ± 11.96
Age, Customized
Age, Customized(Participants)Cohort 1: DS-8201a + RitonavirCohort 2: DS-8201a + ItraconazoleTotal
<65 years101828
≥65 years7512
Sex: Female, Male
Sex: Female, Male(Participants)Cohort 1: DS-8201a + RitonavirCohort 2: DS-8201a + ItraconazoleTotal
Female121022
Male51318
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Cohort 1: DS-8201a + RitonavirCohort 2: DS-8201a + ItraconazoleTotal
American Indian or Alaska Native000
Asian172340
Native Hawaiian or Other Pacific Islander000
Black or African American000
White000
More than one race000
Unknown or Not Reported000
08

Study locations

10 sites
  • Hokkaido Cancer Center
    Sapporo, Hokkaido 003-0804, Japan
  • Hokkaido University Hospital
    Sapporo, Hokkaido 060-8648, Japan
  • Kobe University Hospital
    Kobe, Hyogo 650-0017, Japan
  • Hamamatsu University Hospital
    Hamamatsu, Shizuoka 431-3125, Japan
  • Shizuoka Cancer Center
    Nagaizumicho, Shizuoka 411-0934, Japan
  • National Cancer Center Hospital
    Chuo Ku, Tokyo 104-0045, Japan
  • The Cancer Institute Hospital of JFCR
    Koto-Ku, Tokyo 135-8550, Japan
  • Seoul National University Hospital
    Seoul, 03080, Korea, Republic of
  • Samsung Medical Center
    Seoul, 06351, Korea, Republic of
  • National Taiwan University Hospital
    Taipei, 100, Taiwan
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Yes — De-identified individual participant data (IPD) and applicable supporting clinical trial documents may be available upon request at https://vivli.org/. In cases where clinical trial data and supporting documents are provided pursuant to our company policies and procedures, Daiichi Sankyo will continue to protect the privacy of our clinical trial participants. Details on data sharing criteria and the procedure for requesting access can be found at this web address: https://vivli.org/ourmember/daiichi-sankyo/

Supporting information: Study protocol, Statistical analysis plan, Clinical study report

Time frame: Studies for which the medicine and indication have received European Union (EU) and United States (US), and/or Japan (JP) marketing approval on or after 01 January 2014 or by the US or EU or JP Health Authorities when regulatory submissions in all regions are not planned and after the primary study results have been accepted for publication.

Access criteria: Formal request from qualified scientific and medical researchers on IPD and clinical study documents from clinical trials supporting products submitted and licensed in the United States, the European Union and/or Japan from 01 January 2014 and beyond for the purpose of conducting legitimate research. This must be consistent with the principle of safeguarding study participants' privacy and consistent with provision of informed consent.

Data sharing details ↗ · vivli.org

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 Jan 2018 to primary completion in Sep 2018, 8 months.

Results were first posted in Jun 2021, 2 years 8 months after primary completion.

Of 286 industry-sponsored phase 1 interventional studies under Neoplasm Metastasis, half reached primary completion within 48 months of starting (the median), counting those still running; a quarter within 28 and three quarters within 75. This study's 8 months is below that.

Counting every sponsor, half of 496 studies reached it within 54 months; a quarter within 33 and three quarters within 83.

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

Registered
Dec 7, 2017
First posted
Dec 26, 2017
StartActual
Jan 12, 2018
Primary completionActual
Sep 26, 2018
CompletionActual
Sep 11, 2023
Results first posted
Jun 14, 2021
Last update
Dec 11, 2023
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 Dec 11, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03383692
Collaborators
AstraZeneca
Responsible party
Sponsor
First posted
Dec 26, 2017
Start date
Jan 12, 2018
Primary completion
Sep 26, 2018
Completion
Sep 11, 2023
Results posted
Jun 14, 2021
Last update
Dec 11, 2023

Study contacts

Global Clinical Leader
study director · Daiichi Sankyo

Oversight

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

Not currently enrolling

This study is completed, as verified in Sep 2023. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: Trastuzumab deruxtecan

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