Neoplasms

All Conditions

Digestive System Diseases

Symptoms and General Pathology

Rare Diseases

Adenocarcinoma

Stomach Neoplasms

Neoplasm Metastasis

Carcinoma

Neoplasms, Glandular and Epithelial

Neoplasms by Histologic Type

Stomach Cancer

Antineoplastic Agents

All Drugs and Chemicals

Trastuzumab

Trastuzumab deruxtecan

Antibodies

Immunoglobulins

Antineoplastic Agents, Immunological

Immunoconjugates

Immunologic Factors

Participants who have centrally confirmed HER2-positive gastric or gastro-esophageal junction cancer will be treated with trastuzumab deruxtecan by intravenous (IV) infusion every 3 weeks, until progression of disease or withdrawal from treatment for other reasons.

Antibody component covalently conjugated to a drug component, prepared by dilution based on body weight for intravenous (IV) infusion

Global Clinical Leader

This study will find out if trastuzumab deruxtecan is safe and works for participants with gastric or gastroesophageal junction cancer.

They must have human epidermal growth factor receptor 2 (HER2)-positive gastric or gastro-esophageal junction (GEJ) cancer:

* that cannot be removed surgically
* that has moved to other parts of the body
* that got worse during or after treatment that included trastuzumab

The study will enroll about 80 participants. Sites will be in North America and the European Union.

DS-8201a in HER2-positive Gastric Cancer That Cannot Be Surgically Removed or Has Spread (DESTINY-Gastric02)

A Phase 2, Open-label, Single-arm Trial of Trastuzumab Deruxtecan (DS 8201a) in HER2-positive, Unresectable or Metastatic Gastric or Gastro-esophageal Junction (GEJ) Adenocarcinoma Subjects Who Have Progressed on or After a Trastuzumab-containing Regimen (DESTINY-Gastric02)

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/

The Objective Response Rate (ORR) was the defined as the percentage of participants who achieved a best overall response of confirmed Complete Response (CR) or Partial Response (PR), assessed by independent central review (ICR) committee 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. Confirmed ORR based on ICR is reported.

Progression-free survival (PFS) by independent central review was defined as the time from the date of enrollment to the earlier of the dates of the first objective documentation of disease progression (as per RECIST v1.1) or death due to any cause. Progressive disease was defined as at least a 20% increase in the sum of diameters of target lesions.

Progression-free survival (PFS) by investigator assessment was defined as the time from the date of enrollment to the earlier of the dates of the first objective documentation of disease progression (as per RECIST v1.1) or death due to any cause. Progressive disease was defined as at least a 20% increase in the sum of diameters of target lesions.

The Objective Response Rate (ORR) was defined as the percentage of participants who achieved a best overall response of confirmed Complete Response (CR) or Partial Response (PR), assessed by investigator assessment 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. Confirmed ORR based on investigator assessment is reported.

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

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 based on independent central review.

AstraZeneca

Daiichi Sankyo

A Treatment-emergent adverse event (TEAE) is defined as an AE 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.

Participants who have centrally confirmed HER2-positive gastric or gastro-esophageal junction cancer received an intravenous (IV) infusion 6.4 mg/kg dose of trastuzumab deruxtecan every 3 weeks, until progression of disease or withdrawal from treatment for other reasons.

Trastuzumab Deruxtecan

Participants who have centrally confirmed HER2-positive gastric or gastro-esophageal junction cancer treated with trastuzumab deruxtecan by intravenous (IV) infusion every 3 weeks, until progression of disease or withdrawal from treatment for other reasons.

Age, Categorical

Age, Continuous

Sex: Female, Male

Race (NIH/OMB)

Belgium

United States

Italy

United Kingdom

Spain

Region of Enrollment

Contact for Clinical Trial Information

Objective response rate was assessed in the Full Analysis Set at data cut-off date of 09 April 2021.

Percentage of Participants With Objective Response Rate (ORR) Based on Independent Central Review Following Treatment With DS8201a in Participants With HER2-Positive Unresectable or Metastatic Gastric or Gastro-Esophageal Junction (GEJ) Adenocarcinoma

Objective response rate was assessed in the Full Analysis Set at data cut-off date of 08 Nov 2021.

Progression-free survival (PFS) was assessed in the Full Analysis Set at data cut-off date of 09 April 2021.

Progression-Free Survival (PFS) Based on Independent Central Review Following Treatment With DS8201a in Participants With HER2-Positive Unresectable or Metastatic Gastric or Gastro-Esophageal Junction (GEJ) Adenocarcinoma

Progression-free survival (PFS) was assessed in the Full Analysis Set data at cut-off date of 08 Nov 2021

Progression-Free Survival (PFS) Based on Investigator Assessment Following Treatment With DS8201a in Participants With HER2-Positive Unresectable or Metastatic Gastric or Gastro-Esophageal Junction (GEJ) Adenocarcinoma

Objective Response Rate (ORR) Based on Investigator Assessment Following Treatment With DS8201a in Participants With HER2-Positive Unresectable or Metastatic Gastric or Gastro-Esophageal Junction (GEJ) Adenocarcinoma

Overall survival (OS) was assessed in the Full Analysis Set at data cut-off date of 09 April 2021.

Overall Survival (OS) Following Treatment With DS8201a in Participants With HER2-Positive Unresectable or Metastatic Gastric or Gastro-Esophageal Junction (GEJ) Adenocarcinoma

Overall survival (OS) was assessed in the Full Analysis Set at data cut-off date of 08 Nov 2021.

Duration of Response (DOR) was assessed in the Full Analysis Set at data cut-off date of 09 April 2021.

Duration of Response (DoR) Following Treatment With DS8201a in Participants With HER2-Positive Unresectable or Metastatic Gastric or Gastro-Esophageal Junction (GEJ) Adenocarcinoma

Duration of Response (DOR) was assessed in the Full Analysis Set at data cut-off date of 08 Nov 2021.

Spots Global Cancer Trial Database for prior treatment regimen included trastuzumab