CClinicalTrials.gg
TerminatedNCT03790111TELE-ABCUpdated Apr 19, 2023Results posted

A Safety and Efficacy Study of XERMELO® + First-line Chemotherapy in Patients With Advanced Biliary Tract Cancer

A Phase 2 interventional study of telotristat ethyl in Biliary Tract Cancer (BTC), sponsored by TerSera Therapeutics LLC. Terminated at 14 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-04-19.

Sponsored by TerSera Therapeutics LLC · Phase 2, Interventional, and Treatment

Why this study was terminated
Did not meet pre-specified Progression-Free Survival at Month 6 for Stage 2 Analysis
Phase
Phase 2
Study type
Interventional
Enrollment
53
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

A Phase 2, multicenter, open-label, 2-stage study to assess the safety, tolerability, and efficacy of XERMELO in combination with first-line (1L) therapy (cisplatin [cis] plus gemcitabine [gem])

Read the detailed description

A Phase 2, multicenter, open-label, 2-stage study to assess the safety, tolerability, and efficacy of XERMELO in combination with first-line (1L) therapy cis plus gem in patients with unresectable, locally advanced, recurrent or metastatic biliary tract cancer (intrahepatic or extrahepatic cholangiocarcinoma, gallbladder cancer), who are naïve to tumor-directed therapy in the locally advanced or metastatic setting, and for which treatment with 1L therapy (defined as a combination of cis plus gem) is planned.

02

Conditions studied

  • Biliary Tract Cancer (BTC)
03

In context

Biliary Tract Neoplasms

484 studies on the registry are indexed under Biliary Tract Neoplasms; 187 are open to participants now.

This study's enrollment of 53 is close to the median of 56 across 404 interventional studies indexed under Biliary Tract Neoplasms.

Browse Biliary Tract Neoplasms studies →

Lead sponsor

TerSera Therapeutics LLC is the lead sponsor of 3 studies on the registry; 1 is open to participants now.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Male or female adults, ≥18 years of age. Patients of childbearing potential must agree to use an adequate method of contraception during the study and for 30 days after the last dose of XERMELO
  • Histopathologically or cytologically-confirmed, unresectable, locally advanced, recurrent, or metastatic biliary tract cancer (BTC)
  • Naïve to tumor-directed therapy in locally advanced, unresectable, or metastatic setting
  • Measurable disease
  • Eastern Cooperative Oncology Group (ECOG) performance status 0-1
  • Plans to initiate treatment with 1L therapy (cisplatin plus gemcitabine)
  • Ability to provide written informed consent prior to participation in any study-related procedure

Exclusion criteria

Exclusion Criteria:

  • Prior exposure to XERMELO, telotristat ethyl, telotristat etiprate, LX1032, or LX1606
  • Primary tumor site in the ampulla of Vater
  • Treatment with photodynamic therapy for localized disease or to relieve biliary obstruction in the presence of metastatic disease within the past 30 days
  • Hematology laboratory values of: a. Absolute neutrophil count (ANC) ≤1,500 cells/mm\^3; or b. Platelets ≤100,000 cells/mm\^3; or c. Hemoglobin (Hgb) ≤9 g/dL; or d. White blood count (WBC) ≤3,000 cells/mm\^3
  • Hepatic laboratory values of aspartate aminotransferase (AST) or alanine aminotransferase (ALT): a. >5 x upper limit of normal (ULN) if patient has documented history of hepatic metastases; or b. >2.5 x ULN if no liver metastases are present
  • Serum albumin \<2.8 g/dL
  • Total bilirubin >1.5 x ULN or >1.5 mg/dL
  • Prothrombin time (PT) or international normalized ratio (INR) >1.5 x ULN
  • Serum creatinine or serum urea >1.5 x ULN
  • Estimated glomerular filtration rate (eGFR) \<50 mL/min
  • Positive pregnancy test, pregnant, or breastfeeding
  • Any other clinically significant laboratory abnormality that would compromise patient safety or the outcome of the study
  • Any clinically significant and/or uncontrolled cardiac-related abnormality that would compromise patient safety or the outcome of the study
  • Myocardial infarction within the past 6 months
  • Active bleeding diathesis
  • Life expectancy ≤3 months
  • Current complaints of persistent constipation or history of chronic constipation, bowel obstruction or fecaloma within the past 6 months
  • Receiving chronic treatment with corticosteroids ≥5 mg of prednisone per day (or equivalent) or other immunosuppressive agent(s)
  • History and/or uncontrolled hepatitis B surface antigen (HBsAg), hepatitis C antibody (HCV Ab), or human immunodeficiency virus (HIV)-1 or HIV-2
  • History of substance or alcohol abuse within the past 2 years
  • History of galactose intolerance, deficiency of Lapp lactase, or glucose-galactose malabsorption
  • History of malignancy or active treatment for malignancy within 5 years
  • Receipt of live, attenuated vaccine or close contact with someone who has received a live, attenuated vaccine within the past 1 month
  • Receipt of any investigational agent or study treatment (ie, any treatment or therapy not approved by the FDA for the treatment of BTC) within the past 30 days
  • Receipt of any protein or antibody-based therapeutic agents within the past 3 months
  • Treatment with any tumor-directed therapy within the past 6 months with curative intent
  • Existence of any surgical or medical condition that, in the judgment of the Investigator, might compromise patient safety or the outcome of the study
  • Presence of any clinically significant findings (relative to the patient population) during review of medical history or upon physical exam that, in the Investigator's or Medical Monitor's opinion, would compromise patient safety or the outcome of the study
  • Evidence of brain metastases
  • Unable or unwilling to communicate or cooperate with the Investigator for any reason
  • Employee of Sponsor or clinical site, or relative of any member of a clinical site's staff
05

Study design

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

Study arms

  • Experimental
    Xermelo 250mg plus first line therapy for a week, then Xermelo 500mg

    Xermelo 250 milligram (mg) plus first line therapy for a week, then Xermelo 500mg plus first line therapy for the duration of the study

    Drug: telotristat ethyl

Interventions

  • Drugtelotristat ethyl

    XERMELO (telotristat ethyl) tablets administered as 250 mg (1 x 250-mg tablet) three times a day plus first line therapy for 7 days, then XERMELO (telotristat ethyl) tablets administered as 500 mg (2 x 250-mg tablets) three times a day plus first line therapy for the duration of the study

    Also known as: telotristat ethyl + (cisplatin [cis] plus gemcitabine [gem])

06

What researchers measure

Primary outcomes

  1. Number of Participants With Progression-free Survival (PFS) as Evaluated by Central Radiologist's Assessment

    Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0), as a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions", or similar definition as accurate and appropriate.

    Time frame: Month 6

  2. Project Overall Survival Rate at Month 6

    Overall Survival (OS) was defined as the time from the frist dose of study treatment until the date of death due to any cause. Duration of Overall Survival (OS) in days is defined as (Date of event/censoring- date of First dose +1). Use Kaplan Meier method to project survival rate at month 6.

    Time frame: 6 Months

Secondary outcomes

  1. Overall Survival (OS)

    Overall Survival (OS) was defined as the time from first dose of study treatment until the date of death due to any cause.

    Time frame: First dose of study treatment until the date of death due to any cause, whichever came first, a median of approximately 17.67 months

  2. Project Overall Survival Rate at Month 12

    Overall Survival (OS) was defined as the time from the first dose of study treatment until the date of death due to any cause. Duration of Overall Survival (OS) in days is defined as (Date of event/censoring - date of first dose +1). Use Kaplan Meier method to project survival rate at month 12.

    Time frame: 12 Months

  3. Median Progression Free Survival

    Scheduled disease assessment at Cycle 19 Day 1 was used to determine PFS response rate at Month 12.

    Time frame: Month 12

  4. Disease Control Rate (DCR), Central Radiologist's Assessment

    Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR.".

    Time frame: Month 6

  5. Disease Control Rate (DCR), Central Radiologist's Assessment

    Disease control rate (DCR) was defined as the proportion of patients with best overall response of SD longer than 6 weeks from first dosing, confirmed PR, or confirmed CR.

    Time frame: Month 12

  6. Disease Control Rate (DCR), Central Radiologist's Assessment

    Disease control rate (DCR) was defined as the proportion of patients with best overall response of SD longer than 6 weeks from first dosing, confirmed PR, or confirmed CR.

    Time frame: End of Study up to 24 months

  7. Overall (Objective) Response Rate (ORR), Central Radiologist's Assessment

    Overall response rate (ORR) was defined as the proportion of patients with best overall response of confirmed PR or confirmed CR. The best overall response was the best overall response recorded from the start of study treatment until the EOS considering any requirement for confirmation. (CR) + partial response (PR) at Months 6

    Time frame: Month 6

  8. Overall (Objective) Response Rate (ORR), Central Radiologist's Assessment

    Overall response rate (ORR) was defined as the proportion of patients (Number of Responders) with best overall response of confirmed PR or confirmed CR. The best overall response was the best overall response recorded from the start of study treatment until Month 12.

    Time frame: Month 12

  9. Overall (Objective) Response Rate, Central Radiologist's Assessment

    Overall response rate (ORR) was defined as the proportion of patients with best overall response of confirmed PR or confirmed CR. The best overall response was the best overall response recorded from the start of study treatment until the EOS considering any requirement for confirmation.

    Time frame: End of Study as defined up to 24 months

  10. Summary of Duration of Progression Free Survival, Local Radiologist's Assessment

    Summary of Duration of Median Progression Free Survival, Local Radiologist's Assessment. Patient progression was defined from date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 7 months.

    Time frame: up to 7 months

  11. Progression Free Survival, Local Radiologist's Assessment

    Summary of Median Progression Free Survival, Local Radiologist's Assessment. Defined as the time from first dose of study treatment until the first date of either disease progression or death due to any cause. Scheduled disease assessment at Cycle 19 Day 1 was used to determine PFS response rate at Month 12.

    Time frame: Month 12

  12. Progression Free Survival, Local Radiologist's Assessment

    Summary of Median Progression Free Survival, Local Radiologist's Assessment, End of Study

    Time frame: End of Study as defined up to 24 months

  13. Overall (Objective) Response Rate, Local Read

    Overall response rate (ORR) was defined as the proportion of patients with best overall response of confirmed PR or confirmed CR. The best overall response was the best overall response recorded from the start of study treatment at Month 6.

    Time frame: 6 Months

  14. Overall (Objective) Response Rate, Local Reader's Assessment

    Overall response rate (ORR) was defined as the proportion of patients with best overall response of confirmed PR or confirmed CR. The best overall response was the best overall response recorded from the start of study treatment at Month 12.

    Time frame: 12 Months

  15. Overall (Objective) Response Rate (ORR), Local Reader's Assessment

    Overall response rate (ORR) was defined as the proportion of patients with best overall response of confirmed PR or confirmed CR. The best overall response was the best overall response recorded from the start of study treatment until the EOS considering any requirement for confirmation.

    Time frame: End of Study as defined up to 24 months

  16. Disease Control Rate (DCR), Local Reviewer

    Disease control rate (DCR) was defined as the proportion of patients with best overall response of SD longer than 6 weeks from first dosing, confirmed PR, or confirmed CR.

    Time frame: Month 12 as defined by 1 year

  17. Disease Control Rate (DCR), Local Reviewer

    Disease control rate (DCR), Local Reviewer, 6 Months

    Time frame: Month 6

  18. Disease Control Rate End of Study, Local Reviewer

    Disease control rate (DCR) was defined as the proportion of patients with best overall response of SD longer than 6 weeks from first dosing, confirmed PR, or confirmed CR.

    Time frame: End of Study as defined up to 24 months

  19. Mean Change From Baseline in Plasma 5-hydroxyindoleacetic Acid (5-HIAA)

    Mean change from Baseline to Month 6 plasma level 5-hydroxyindoleacetic acid (5-HIAA)

    Time frame: Month 6

  20. Mean Change From Baseline in Plasma 5-hydroxyindoleacetic Acid (5-HIAA)

    Mean change from Baseline to Month 12 in plasma level 5-hydroxyindoleacetic Acid (5-HIAA)

    Time frame: Month 12

  21. Mean Change From Baseline in Plasma 5-hydroxyindoleacetic Acid (5-HIAA)

    Mean change from Baseline to End of Study in plasma 5-hydroxyindoleacetic acid (5-HIAA)

    Time frame: End of Study as defined up to 24 months

  22. Change From Baseline in Carbohydrate Antigen 19-9 (CA 19-9)

    Mean change from Baseline to month 6 in plasma carbohydrate antigen 19-9 (CA 19-9)

    Time frame: Month 6

  23. Change From Baseline in Carbohydrate Antigen 19-9 (CA 19-9)

    Mean change from Baseline to Month 12 in plasma carbohydrate antigen 19-9 (CA 19-9)

    Time frame: Month 12

  24. Change From Baseline in Plasma Carbohydrate Antigen 19-9 (CA 19-9)

    Mean change from Baseline to End of Study in plasma carbohydrate antigen 19-9 (CA 19-9)

    Time frame: End of Study as defined up to 24 months

  25. Weight Change From Baseline

    Mean change in weight at Month 6 from baseline measurement

    Time frame: Month 6

  26. Weight Change From Baseline

    Mean change in weight at Month 12 from baseline measurement

    Time frame: Month 12

  27. Weight Change From Baseline

    Mean change in weight from baseline to End of Study

    Time frame: End of Study as defined up to 24 months

  28. Change From Baseline in Serum Albumin

    Mean change from Baseline to Month 6 serum albumin levels

    Time frame: Month 6

  29. Change From Baseline in Serum Albumin

    Mean change from Baseline to Month 12 serum albumin levels

    Time frame: Month 12

  30. Change From Baseline in Serum Albumin

    Mean change from Baseline to End of Study serum albumin levels

    Time frame: End of Study as defined up to 24 months

07

Results

Posted Apr 19, 2023
Limitations and caveats
This study was halted prematurely as it did not meet pre-specified Progression-Free Survival at Month 6 for Stage 2 Analysis. Due to early discontinuation of the study with limited data, the study results (data) at Month 12 and End of Study may be unreliable and uninterpretable.

Participant flow

Participant flow — Overall Study
MilestoneXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Started53
Completed0
Not completed53
Withdrew: Study did not meet its primary endpoint.53

Outcome measures

PrimaryNumber of Participants With Progression-free Survival (PFS) as Evaluated by Central Radiologist's Assessment

Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0), as a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions", or similar definition as accurate and appropriate.

Time frame:
Month 6
Reported as:
Count of participants · Participants
Number of Participants With Progression-free Survival (PFS) as Evaluated by Central Radiologist's Assessment
ParticipantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Safety Population — Responders, Central Reviewer12
Safety Population — Non-Responders, Central Reviewer41
Per Protocol Population — Responders, Central Reviewer12
Per Protocol Population — Non-Responders, Central Reviewer30
By Treatment Cycle Population — Responders, Central Reviewer12
By Treatment Cycle Population — Non-Responders, Central Reviewer21
PrimaryProject Overall Survival Rate at Month 6

Overall Survival (OS) was defined as the time from the frist dose of study treatment until the date of death due to any cause. Duration of Overall Survival (OS) in days is defined as (Date of event/censoring- date of First dose +1). Use Kaplan Meier method to project survival rate at month 6.

Time frame:
6 Months
Reported as:
Number · Proportion of participants
Project Overall Survival Rate at Month 6
Proportion of participantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Project Overall Survival Rate at Month 60.87 (0.74 to 0.93)
SecondaryOverall Survival (OS)

Overall Survival (OS) was defined as the time from first dose of study treatment until the date of death due to any cause.

Time frame:
First dose of study treatment until the date of death due to any cause, whichever came first, a median of approximately 17.67 months
Reported as:
Median · Months
Overall Survival (OS)
MonthsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Overall Survival (OS)17.667 (11.567 to NA)
SecondaryProject Overall Survival Rate at Month 12

Overall Survival (OS) was defined as the time from the first dose of study treatment until the date of death due to any cause. Duration of Overall Survival (OS) in days is defined as (Date of event/censoring - date of first dose +1). Use Kaplan Meier method to project survival rate at month 12.

Time frame:
12 Months
Reported as:
Number · Proportion of participants
Project Overall Survival Rate at Month 12
Proportion of participantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Project Overall Survival Rate at Month 120.60 (0.45 to 0.72)
SecondaryMedian Progression Free Survival

Scheduled disease assessment at Cycle 19 Day 1 was used to determine PFS response rate at Month 12.

Time frame:
Month 12
Reported as:
Median · Months
Median Progression Free Survival
MonthsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Median Progression Free Survival6.233 (4.067 to 7.467)
SecondaryDisease Control Rate (DCR), Central Radiologist's Assessment

Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR.".

Time frame:
Month 6
Reported as:
Count of participants · Participants
Disease Control Rate (DCR), Central Radiologist's Assessment
ParticipantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Disease Control Rate (DCR), Central Radiologist's Assessment33
SecondaryDisease Control Rate (DCR), Central Radiologist's Assessment

Disease control rate (DCR) was defined as the proportion of patients with best overall response of SD longer than 6 weeks from first dosing, confirmed PR, or confirmed CR.

Time frame:
Month 12
Reported as:
Count of participants · Participants
Disease Control Rate (DCR), Central Radiologist's Assessment
ParticipantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Disease Control Rate (DCR), Central Radiologist's Assessment33
SecondaryDisease Control Rate (DCR), Central Radiologist's Assessment

Disease control rate (DCR) was defined as the proportion of patients with best overall response of SD longer than 6 weeks from first dosing, confirmed PR, or confirmed CR.

Time frame:
End of Study up to 24 months
Reported as:
Count of participants · Participants
Disease Control Rate (DCR), Central Radiologist's Assessment
ParticipantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Disease Control Rate (DCR), Central Radiologist's Assessment35
SecondaryOverall (Objective) Response Rate (ORR), Central Radiologist's Assessment

Overall response rate (ORR) was defined as the proportion of patients with best overall response of confirmed PR or confirmed CR. The best overall response was the best overall response recorded from the start of study treatment until the EOS considering any requirement for confirmation. (CR) + partial response (PR) at Months 6

Time frame:
Month 6
Reported as:
Count of participants · Participants
Overall (Objective) Response Rate (ORR), Central Radiologist's Assessment
ParticipantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Overall (Objective) Response Rate (ORR), Central Radiologist's Assessment7
SecondaryOverall (Objective) Response Rate (ORR), Central Radiologist's Assessment

Overall response rate (ORR) was defined as the proportion of patients (Number of Responders) with best overall response of confirmed PR or confirmed CR. The best overall response was the best overall response recorded from the start of study treatment until Month 12.

Time frame:
Month 12
Reported as:
Count of participants · Participants
Overall (Objective) Response Rate (ORR), Central Radiologist's Assessment
ParticipantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Overall (Objective) Response Rate (ORR), Central Radiologist's Assessment7
SecondaryOverall (Objective) Response Rate, Central Radiologist's Assessment

Overall response rate (ORR) was defined as the proportion of patients with best overall response of confirmed PR or confirmed CR. The best overall response was the best overall response recorded from the start of study treatment until the EOS considering any requirement for confirmation.

Time frame:
End of Study as defined up to 24 months
Reported as:
Count of participants · Participants
Overall (Objective) Response Rate, Central Radiologist's Assessment
ParticipantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Overall (Objective) Response Rate, Central Radiologist's Assessment7
SecondarySummary of Duration of Progression Free Survival, Local Radiologist's Assessment

Summary of Duration of Median Progression Free Survival, Local Radiologist's Assessment. Patient progression was defined from date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 7 months.

Time frame:
up to 7 months
Reported as:
Median · Months
Summary of Duration of Progression Free Survival, Local Radiologist's Assessment
MonthsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Summary of Duration of Progression Free Survival, Local Radiologist's Assessment7.000 (5.567 to NA)
SecondaryProgression Free Survival, Local Radiologist's Assessment

Summary of Median Progression Free Survival, Local Radiologist's Assessment. Defined as the time from first dose of study treatment until the first date of either disease progression or death due to any cause. Scheduled disease assessment at Cycle 19 Day 1 was used to determine PFS response rate at Month 12.

Time frame:
Month 12
Reported as:
Median · Months
Progression Free Survival, Local Radiologist's Assessment
MonthsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Progression Free Survival, Local Radiologist's Assessment7.467 (5.567 to 10.533)
SecondaryProgression Free Survival, Local Radiologist's Assessment

Summary of Median Progression Free Survival, Local Radiologist's Assessment, End of Study

Time frame:
End of Study as defined up to 24 months
Reported as:
Median · Months
Progression Free Survival, Local Radiologist's Assessment
MonthsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Progression Free Survival, Local Radiologist's Assessment7.467 (5.567 to 10.533)
SecondaryOverall (Objective) Response Rate, Local Read

Overall response rate (ORR) was defined as the proportion of patients with best overall response of confirmed PR or confirmed CR. The best overall response was the best overall response recorded from the start of study treatment at Month 6.

Time frame:
6 Months
Reported as:
Count of participants · Participants
Overall (Objective) Response Rate, Local Read
ParticipantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Overall (Objective) Response Rate, Local Read6
SecondaryOverall (Objective) Response Rate, Local Reader's Assessment

Overall response rate (ORR) was defined as the proportion of patients with best overall response of confirmed PR or confirmed CR. The best overall response was the best overall response recorded from the start of study treatment at Month 12.

Time frame:
12 Months
Reported as:
Count of participants · Participants
Overall (Objective) Response Rate, Local Reader's Assessment
ParticipantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Overall (Objective) Response Rate, Local Reader's Assessment8
SecondaryOverall (Objective) Response Rate (ORR), Local Reader's Assessment

Overall response rate (ORR) was defined as the proportion of patients with best overall response of confirmed PR or confirmed CR. The best overall response was the best overall response recorded from the start of study treatment until the EOS considering any requirement for confirmation.

Time frame:
End of Study as defined up to 24 months
Reported as:
Count of participants · Participants
Overall (Objective) Response Rate (ORR), Local Reader's Assessment
ParticipantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Overall (Objective) Response Rate (ORR), Local Reader's Assessment8
SecondaryDisease Control Rate (DCR), Local Reviewer

Disease control rate (DCR) was defined as the proportion of patients with best overall response of SD longer than 6 weeks from first dosing, confirmed PR, or confirmed CR.

Time frame:
Month 12 as defined by 1 year
Reported as:
Count of participants · Participants
Disease Control Rate (DCR), Local Reviewer
ParticipantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Disease Control Rate (DCR), Local Reviewer40
SecondaryDisease Control Rate (DCR), Local Reviewer

Disease control rate (DCR), Local Reviewer, 6 Months

Time frame:
Month 6
Reported as:
Count of participants · Participants
Disease Control Rate (DCR), Local Reviewer
ParticipantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Disease Control Rate (DCR), Local Reviewer40
SecondaryDisease Control Rate End of Study, Local Reviewer

Disease control rate (DCR) was defined as the proportion of patients with best overall response of SD longer than 6 weeks from first dosing, confirmed PR, or confirmed CR.

Time frame:
End of Study as defined up to 24 months
Reported as:
Count of participants · Participants
Disease Control Rate End of Study, Local Reviewer
ParticipantsXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Disease Control Rate End of Study, Local Reviewer40
SecondaryMean Change From Baseline in Plasma 5-hydroxyindoleacetic Acid (5-HIAA)

Mean change from Baseline to Month 6 plasma level 5-hydroxyindoleacetic acid (5-HIAA)

Time frame:
Month 6
Reported as:
Mean · micrograms/Liter
Mean Change From Baseline in Plasma 5-hydroxyindoleacetic Acid (5-HIAA)
micrograms/LiterXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Mean Change From Baseline in Plasma 5-hydroxyindoleacetic Acid (5-HIAA)-1.735 ± 8.6933
SecondaryMean Change From Baseline in Plasma 5-hydroxyindoleacetic Acid (5-HIAA)

Mean change from Baseline to Month 12 in plasma level 5-hydroxyindoleacetic Acid (5-HIAA)

Time frame:
Month 12
Reported as:
Mean · micrograms/Liter
Mean Change From Baseline in Plasma 5-hydroxyindoleacetic Acid (5-HIAA)
micrograms/LiterXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Mean Change From Baseline in Plasma 5-hydroxyindoleacetic Acid (5-HIAA)-5.608 ± 6.5192
SecondaryMean Change From Baseline in Plasma 5-hydroxyindoleacetic Acid (5-HIAA)

Mean change from Baseline to End of Study in plasma 5-hydroxyindoleacetic acid (5-HIAA)

Time frame:
End of Study as defined up to 24 months
Reported as:
Mean · micrograms/Liter
Mean Change From Baseline in Plasma 5-hydroxyindoleacetic Acid (5-HIAA)
micrograms/LiterXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Mean Change From Baseline in Plasma 5-hydroxyindoleacetic Acid (5-HIAA)4.154 ± 5.7003
SecondaryChange From Baseline in Carbohydrate Antigen 19-9 (CA 19-9)

Mean change from Baseline to month 6 in plasma carbohydrate antigen 19-9 (CA 19-9)

Time frame:
Month 6
Reported as:
Mean · U/mL
Change From Baseline in Carbohydrate Antigen 19-9 (CA 19-9)
U/mLXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Change From Baseline in Carbohydrate Antigen 19-9 (CA 19-9)-229.82 ± 2484.902
SecondaryChange From Baseline in Carbohydrate Antigen 19-9 (CA 19-9)

Mean change from Baseline to Month 12 in plasma carbohydrate antigen 19-9 (CA 19-9)

Time frame:
Month 12
Reported as:
Mean · U/mL
Change From Baseline in Carbohydrate Antigen 19-9 (CA 19-9)
U/mLXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Change From Baseline in Carbohydrate Antigen 19-9 (CA 19-9)-18.04 ± 38.665
SecondaryChange From Baseline in Plasma Carbohydrate Antigen 19-9 (CA 19-9)

Mean change from Baseline to End of Study in plasma carbohydrate antigen 19-9 (CA 19-9)

Time frame:
End of Study as defined up to 24 months
Reported as:
Mean · Units per milliliter
Change From Baseline in Plasma Carbohydrate Antigen 19-9 (CA 19-9)
Units per milliliterXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Change From Baseline in Plasma Carbohydrate Antigen 19-9 (CA 19-9)-153.98 ± 456.210
SecondaryWeight Change From Baseline

Mean change in weight at Month 6 from baseline measurement

Time frame:
Month 6
Reported as:
Mean · kg
Weight Change From Baseline
kgXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Weight Change From Baseline-0.69 ± 9.759
SecondaryWeight Change From Baseline

Mean change in weight at Month 12 from baseline measurement

Time frame:
Month 12
Reported as:
Mean · kg
Weight Change From Baseline
kgXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Weight Change From Baseline1.69 ± 7.473
SecondaryWeight Change From Baseline

Mean change in weight from baseline to End of Study

Time frame:
End of Study as defined up to 24 months
Reported as:
Mean · kg
Weight Change From Baseline
kgXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Weight Change From Baseline-3.28 ± 8.920
SecondaryChange From Baseline in Serum Albumin

Mean change from Baseline to Month 6 serum albumin levels

Time frame:
Month 6
Reported as:
Mean · g/L
Change From Baseline in Serum Albumin
g/LXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Change From Baseline in Serum Albumin-0.2 ± 4.59
SecondaryChange From Baseline in Serum Albumin

Mean change from Baseline to Month 12 serum albumin levels

Time frame:
Month 12
Reported as:
Mean · g/L
Change From Baseline in Serum Albumin
g/LXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Change From Baseline in Serum Albumin-2.2 ± 2.86
SecondaryChange From Baseline in Serum Albumin

Mean change from Baseline to End of Study serum albumin levels

Time frame:
End of Study as defined up to 24 months
Reported as:
Mean · g/L
Change From Baseline in Serum Albumin
g/LXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Change From Baseline in Serum Albumin-1.2 ± 4.99

Adverse events

Collected over 2 years. Non-serious events are listed at a 1% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Xermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg3/53 (5.7%)24/53 (45.3%)53/53 (100%)
Most frequent serious events
Showing 10 of 13
Most frequent serious events
EventXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Gastrointestinal disordersGastrointestinal disorders8/53
Infections and infestationsInfections and infestations5/53
Respiratory, Thoracic and mediastinal disordersRespiratory, thoracic and mediastinal disorders5/53
Hepatobiliary disordersHepatobiliary disorders3/53
Nervous system disordersNervous system disorders3/53
Cardiac DisordersCardiac disorders2/53
InvestigationsInvestigations2/53
Blood and lymphatic system disordersBlood and lymphatic system disorders1/53
Injury, poisoning and procedural complicationsInjury, poisoning and procedural complications1/53
Metabolism and nutrition disordersMetabolism and nutrition disorders1/53
Most frequent other events
Showing 10 of 16
Most frequent other events
EventXermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
ConstipationGastrointestinal disorders34/53
NauseaGastrointestinal disorders33/53
FatigueGeneral disorders32/53
AnemiaBlood and lymphatic system disorders27/53
Neutrophil count decreasedBlood and lymphatic system disorders22/53
Platelet count decreasedBlood and lymphatic system disorders19/53
DiarrheaGastrointestinal disorders18/53
VomitingGastrointestinal disorders17/53
White blood cell count decreasedBlood and lymphatic system disorders14/53
Abdominal painGastrointestinal disorders14/53

Baseline characteristics

Safety Population

Age, Categorical
Age, Categorical(Participants)Xermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
<=18 years0
Between 18 and 65 years22
>=65 years31
Age, Continuous
Age, Continuous(Years)Xermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Mean63.4 ± 10.96
Sex: Female, Male
Sex: Female, Male(Participants)Xermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Female33
Male20
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Xermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Hispanic or Latino2
Not Hispanic or Latino50
Unknown or Not Reported1
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Xermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
American Indian or Alaska Native0
Asian2
Native Hawaiian or Other Pacific Islander0
Black or African American4
White46
More than one race0
Unknown or Not Reported1
Region of Enrollment
Region of Enrollment(participants)Xermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
United States53
Height
Height(inches)Xermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Mean66.4 ± 3.37
Weight
Weight(kilogram)Xermelo 250mg Plus 1L Therapy for a Week, Then Xermelo 500mg
Mean81.9 ± 17.40

5 further baseline measures are reported on the registry.

08

Study locations

14 sites
  • TerSera Investigational Site
    Gilbert, Arizona 85234, United States
  • TerSera Investigational Site
    Fullerton, California 92835, United States
  • TerSera Investigational Site
    Gainesville, Florida 32610, United States
  • TerSera Investigational Site
    Tampa, Florida 33612, United States
  • TerSera Investigational Site
    Chicago, Illinois 60637, United States
  • TerSera Investigational Site
    Westwood, Kansas 66205, United States
  • TerSera Investigational Site
    Lexington, Kentucky 40536, United States
  • TerSera Investigational Site
    Boston, Massachusetts 02118, United States
  • TerSera Investigational Site
    Grand Rapids, Michigan 49503, United States
  • TerSera Investigational Site
    Buffalo, New York 14263, United States
  • TerSera Investigational Site
    Lake Success, New York 11042, United States
  • TerSera Investigational Site
    Charlotte, North Carolina 28204, United States
  • TerSera Investigational Site
    Oklahoma City, Oklahoma 73104, United States
  • TerSera Investigational Site
    San Antonio, Texas 78229, United States
09

References and documents

Study documents

  • Study protocol · Nov 23, 2020
  • Statistical analysis plan · Feb 3, 2021

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 19, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03790111
Lead sponsor
TerSera Therapeutics LLC
Responsible party
Sponsor
First posted
Dec 31, 2018
Start date
Mar 13, 2019
Primary completion
Jan 13, 2022
Completion
Jan 13, 2022
Results posted
Apr 19, 2023
Last update
Apr 19, 2023

Study contacts

Renuka Iyer, M.D.
study chair · Roswell Park Cancer Institute
Richard Kim, M.D.
study chair · H. Lee Moffitt Cancer Center and Research Institute

Oversight

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

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