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Completed

NCT Number: NCT03329690

DS-8201a in Human Epidermal Growth Factor Receptor 2 (HER2)-Expressing Gastric Cancer [DESTINY-Gastric01]

The primary purpose of this trial is to compare the efficacy and safety of DS-8201a and physician's choice treatment in HER2-overexpressing advanced gastric or gastroesophageal junction adenocarcinoma patients who have progressed on two prior treatment regimens including fluoropyrimidine agent, platinum agent, and trastuzumab.

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Key information

Conditions

Neoplasm, Gastrointestinal Adenocarcinoma Carcinoma Digestive System Diseases Digestive System Neoplasms Gastrointestinal Diseases Gastrointestinal Neoplasms Neoplasms Neoplasms by Histologic Type Neoplasms by Site Neoplasms, Glandular and Epithelial

Age range

20 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

Aichi Cancer Center Hospital, Nagoya, Aichi-ken, Japan

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Has a pathologically documented locally advanced or metastatic adenocarcinoma of gastric or gastroesophageal junction
  • Progression on and after at least 2 prior regimens
  • Has an adequate tumor sample
  • Has measurable disease based on Response Evaluation Criteria In Solid Tumors (RECIST) version 1.1

Exclusion criteria

  • Has a medical history of myocardial infarction, symptomatic congestive heart failure (CHF) (NYHA classes II-IV), unstable angina or serious cardiac arrhythmia
  • Has a QTc prolongation to > 450 millisecond (ms) in males and > 470 ms in females
  • Has a medical history of clinically significant lung disease
  • Is suspected to have certain other protocol-defined diseases based on imaging at screening period
  • Has history of any disease, metastatic condition, drug/medication use or other condition that might, per protocol or in the opinion of the investigator, compromise:
  • safety or well-being of the participant or offspring
  • safety of study staff
  • analysis of results

Treatment and study plan

DS-8201a

Drug

DS-8201a is comprised of an antibody component conjoined to a drug component in a lyophilized powder, which is made into solution for intravenous administration.

Other names: Experimental product

Physician's Choice

Drug

Either:

Irinotecan monotherapy (Starting dosage and usage is 150 mg/m2 biweekly, with dose reduction permitted)

Paclitaxel monotherapy (Starting dosage and usage is 80 mg/m2 weekly, with dose reduction permitted)

Other names: Standard of Care

Primary outcomes

  1. Percentage of Participants With Objective Response Rate Based on Independent Central Review Following Treatment With DS-8201a in Participants With HER2-Expressing Advanced Gastric or Gastroesophageal Junction Adenocarcinoma (Intent-to-Treat Analysis Set)

    Time frame: Baseline to date of first documented objective response (CR or PR), up to 36 months postdose

    The Objective Response Rate (ORR) is the percentage of participants who achieved a best overall response of Complete Response (CR) or Partial Response (PR), assessed by independent central imaging review (ICR) based on 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. Unconfirmed ORR (not confirmed by ICR) and confirmed ORR (confirmed by ICR) are reported.

  2. Percentage of Participants With Best Overall Response Based on Independent Central Review Following Treatment With DS-8201a in Participants With HER2-Expressing Advanced Gastric or Gastroesophageal Junction Adenocarcinoma (Intent-to-Treat Analysis Set)

    Time frame: Baseline to date of first documented objective response, up to 36 months postdose

    The best overall response is the best overall response (BOR) recorded from the start of the study treatment until the end of treatment and includes complete response (CR), partial response (PR), stable disease (SD), progressive disease (PD) and not evaluable (NE) as assessed by independent central imaging review (ICR) based on RECIST version 1.1. 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 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. Unconfirmed BOR (not confirmed by ICR) and confirmed BOR (confirmed by ICR) are reported.

Secondary outcomes

  1. Overall Survival Following Treatment With DS-8201a in Participants With HER2-Expressing Advanced Gastric or Gastroesophageal Junction Adenocarcinoma (Intent-to-Treat Analysis Set)

    Time frame: From the date of randomization to the date of death (due to any cause), up to 36 months postdose

    Duration of survival follow-up (months) was defined as the date of last contact - date of randomization/ registration + 1.Overall Survival (OS) was defined as the time from the date of randomization (the date of the registration for the Exploratory Cohorts) to the date of death due to any cause.

  2. Progression-Free Survival Based on Independent Central Review Following Treatment With DS-8201a in Participants With HER2-Expressing Advanced Gastric or Gastroesophageal Junction Adenocarcinoma (Intent-to-Treat Analysis Set)

    Time frame: From the date of randomization to the first documented disease progression or date of death (whichever occurs first), up to 36 months postdose

    Progression-free survival (PFS) was defined as the time from the date of randomization (the date of the registration for the Exploratory Cohorts) to the earliest date of the first objective documentation of progressive disease (PD) or death due to any cause. PD was defined as at least a 20% increase in the sum of diameters of target lesions.

  3. Duration of Response Based on Independent Central Review Following Treatment With DS-8201a in Participants With HER2-Expressing Advanced Gastric or Gastroesophageal Junction Adenocarcinoma (Full Analysis Set)

    Time frame: From the date of first objective response (CR or PR) to the date of first documentation of PD or death (whichever occurs first), up to 36 months postdose

    Duration of Response (DOR) was defined as the time from the date of the first documentation of objective response (complete response [CR] or partial response [PR]) to the date of the first objective documentation of progressive disease (PD) or death due to any cause. DoR was measured for responding subjects (PR or CR) only.

  4. Disease Control Rate With and Without Confirmation by Independent Central Review Following Treatment With DS-8201a in Participants With HER2-Expressing Advanced Gastric or Gastroesophageal Junction Adenocarcinoma (Intent-to-Treat Analysis Set)

    Time frame: Baseline to date of first documented objective response (CR, PR, and SD), up to 36 months postdose

    Disease control rate (DCR) was defined as the sum of complete response (CR) rate, partial response (PR) rate, and stable disease (SD) rate. As per RECIST v1.1, 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.

  5. Objective Response Rate and Best Overall Response Based on Independent Central Review Following Treatment With DS-8201a in Participants With HER2-Expressing Advanced Gastric or Gastroesophageal Junction Adenocarcinoma (Intent-to-Treat Analysis Set)

    Time frame: From randomization to first documented objective response, up to 36 months postdose

    The Objective Response Rate (ORR) is the percentage of participants who achieved a best overall response of Complete Response (CR) or Partial Response (PR), assessed by Independent Central Review (ICR) based on RECIST version 1.1. The best overall response is the best overall response (BOR) recorded from the start of the study treatment until the end of treatment and includes CR, PR, stable disease (SD), progressive disease (PD) and not evaluable (NE) as assessed by Investigator based on RECIST version 1.1. 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 SD was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD (at least a 20% increase in the sum of diameters of target lesions). Confirmed ORR and BOR (confirmed by ICR) are reported.

  6. Time to Treatment Failure Following Treatment With DS-8201a in Participants With HER2-Expressing Advanced Gastric or Gastroesophageal Junction Adenocarcinoma (Full Analysis Set)

    Time frame: From date of randomization to first documentation of PD, death due to any cause, or treatment discontinuation (whichever comes first), up to 36 months postdose

    Time to treatment failure (TTF) was defined as the time from the date of randomization (the date of the registration for Exploratory Cohorts) to the earliest date of the first objective documentation of progressive disease (PD), death due to any cause, or treatment discontinuation.

  7. Objective Response Rate and Best Overall Response Based on Investigator Assessment Following Treatment With DS-8201a in Participants With HER2-Expressing Advanced Gastric or Gastroesophageal Junction Adenocarcinoma (Response Evaluable Set)

    Time frame: From randomization to first documented objective response, up to 36 months postdose

    The Objective Response Rate (ORR) is the percentage of participants who achieved a best overall response of Complete Response (CR) or Partial Response (PR), assessed by Investigator based on RECIST version 1.1. The best overall response is the best overall response (BOR) recorded from the start of the study treatment until the end of treatment and includes CR, PR, stable disease (SD), progressive disease (PD) and not evaluable (NE) as assessed by Investigator based on RECIST version 1.1. 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 SD was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD (at least a 20% increase in the sum of diameters of target lesions). Unconfirmed ORR and BOR (not confirmed by Investigator) and confirmed ORR and BOR (confirmed by Investigator) are reported.

  8. Pharmacokinetic Parameter of Maximum Observed Serum Concentration (Cmax) and Trough Serum Concentration (Ctrough) of DS-8201a and Total Anti-HER2 Antibody Following Treatment With DS-8201a

    Time frame: Cycle 1 and 3, Day 1: predose, 4 hours (h), 7h postdose; Day 8, Day 15, and Day 22 postdose; Cycle 2, Day 1 and Day 22 postdose; Cycle 4, 6, and 8, Day 1 postdose (each cycle is 21 days)

    Blood samples for DS-8201a pharmacokinetic (PK) analysis were obtained at the specified timepoints. The maximum serum concentration (Cmax) and the trough serum concentration (Ctrough) of DS-8201a were assessed. These serum PK parameters for DS-8201a and total anti-HER2 antibody were estimated in each participant using standard noncompartmental methods.

  9. Pharmacokinetic Parameter of Maximum Observed Serum Concentration (Cmax) and Trough Serum Concentration (Ctrough) of MAAA-1181 Following Treatment With DS-8201a

    Time frame: Cycle 1 and 3, Day 1: predose, 4 hours (h), 7h postdose; Day 8, Day 15, and Day 22 postdose; Cycle 2, Day 1 and Day 22 postdose; Cycle 4, 6, and 8, Day 1 postdose (each cycle is 21 days)

    Blood samples for DS-8201a pharmacokinetic (PK) analysis were obtained at the specified timepoints. The maximum serum concentration (Cmax) and the trough serum concentration (Ctrough) of DS-8201a were assessed. These serum PK parameters for MAAA-1181a were estimated in each participant using standard noncompartmental methods.

  10. Pharmacokinetic Parameters of Area Under the Concentration Versus-Time Curve of DS-8201a and Total Anti-HER2 Antibody Following Treatment With DS-8201a

    Time frame: Cycle 1 and 3, Day 1: predose, 4 hours (h), 7h postdose; Day 8, Day 15, and Day 22 postdose; Cycle 2, Day 1 and Day 22 postdose; Cycle 4, 6, and 8, Day 1 postdose (each cycle is 21 days)

    Blood samples for DS-8201a pharmacokinetic (PK) analysis were obtained at the specified timepoints. Area under the concentration versus time curve (AUC) from Time 0 to the Last Quantifiable Concentration (AUClast) and Area Under the Concentration versus-Time Curve up to 21 days (AUC21d) are reported. These serum PK parameters for DS-8201a and total anti-HER2 antibody were estimated in each participant using standard noncompartmental methods.

  11. Pharmacokinetic Parameters of Area Under the Concentration Versus-Time Curve of MAAA-1181 Following Treatment With DS-8201a

    Time frame: Cycle 1 and 3, Day 1: predose, 4 hours (h), 7h postdose; Day 8, Day 15, and Day 22 postdose; Cycle 2, Day 1 and Day 22 postdose; Cycle 4, 6, and 8, Day 1 postdose (each cycle is 21 days)

    Blood samples for DS-8201a pharmacokinetic (PK) analysis were obtained at the specified timepoints. Area under the concentration versus time curve (AUC) from Time 0 to the Last Quantifiable Concentration (AUClast) and Area Under the Concentration versus-Time Curve up to 21 days (AUC21d) are reported. These serum PK parameters for MAAA-1181a were estimated in each participant using standard noncompartmental methods.

  12. Pharmacokinetic Parameter of Time to Maximum Serum Concentration (Tmax) of DS-8201a, Total Anti-HER2 Antibody and MAAA-1181 Following Treatment With DS-8201a

    Time frame: Cycle 1 and 3, Day 1: predose, 4 hours (h), 7h postdose; Day 8, Day 15, and Day 22 postdose; Cycle 2, Day 1 and Day 22 postdose; Cycle 4, 6, and 8, Day 1 postdose (each cycle is 21 days)

    Blood samples for DS-8201a pharmacokinetic (PK) analysis were obtained at the specified timepoints. The time to maximum serum concentration (Tmax) of DS-8201a was assessed. This serum PK parameter for DS-8201a, total anti-HER2 antibody, and MAAA-1181a were estimated in each participant using standard noncompartmental methods.

  13. Pharmacokinetic Parameter Terminal Elimination Half-life (t1/2) of DS-8201a, Total Anti-HER2 Antibody and MAAA-1181 Following Treatment With DS-8201a

    Time frame: Cycle 1 and 3, Day 1: predose, 4 hours (h), 7h postdose; Day 8, Day 15, and Day 22 postdose; Cycle 2, Day 1 and Day 22 postdose; Cycle 4, 6, and 8, Day 1 postdose (each cycle is 21 days)

    Blood samples for DS-8201a pharmacokinetic (PK) analysis were obtained at the specified timepoints. Terminal elimination half-life (t1/2) of DS-8201a was assessed. This serum PK parameter for DS-8201a, total anti-HER2 antibody, and MAAA-1181a were estimated in each participant using standard noncompartmental methods.

  14. Overall Summary of Treatment-emergent Adverse Events (TEAEs) Following Treatment With DS-8201a in Participants With HER2-Expressing Advanced Gastric or Gastroesophageal Junction Adenocarcinoma. (Safety Analysis Set)

    Time frame: Baseline up to 47 days after last dose, up to 36 months postdose

    A treatment-emergent adverse event (TEAE) is defined as an adverse event that occurs, having been absent before the first dose of study drug, or has worsened in severity or seriousness after the initiating the study drug until 47 days after last dose of the study drug. Serious adverse events (SAEs) with an onset or worsening 48 days or more after the last dose of study drug, if considered related to the study treatment, are also TEAEs.

  15. Summary of Most Common Treatment-Emergent Adverse Events (TEAEs) ≥20% of Any Grade by Preferred Term Following Treatment With DS-8201a in Participants With HER2-Expressing Advanced Gastric or Gastroesophageal Junction Adenocarcinoma (Safety Analysis Set)

    Time frame: Baseline up to 47 days after last dose, up to 36 months postdose

    A treatment-emergent adverse event (TEAE) is defined as an adverse event that occurs, having been absent before the first dose of study drug, or has worsened in severity or seriousness after the initiating the study drug until 47 days after last dose of the study drug.

Sponsors and collaborators

Lead sponsor

Daiichi Sankyo Co., Ltd.

Industry

Collaborators

  • AstraZeneca

Registry information

Official study title

A Phase 2, Multicenter, Open-label Study of DS-8201a in Subjects With HER2-expressing Advanced Gastric or Gastroesophageal Junction Adenocarcinoma

Important dates

Study start
2017
Primary completion
2019
Study completion
2020
First posted
Nov 6, 2017
Registry last updated
Mar 18, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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