UMIN-ICDS Clinical Trial

Unique ID issued by UMIN UMIN000062312
Receipt number R000071303
Scientific Title A Multicenter Prospective Observational Study Evaluating Effectiveness and Safety of Trastuzumab Deruxtecan in HER2-Positive Gastric Cancer Patients without HER2 Status Immediately Prior to Second-Line Treatment
Date of disclosure of the study information 2026/09/21
Last modified on 2026/07/23 11:06:56

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Basic information

Public title

A Multicenter Prospective Observational Study Evaluating Effectiveness and Safety of Trastuzumab Deruxtecan in HER2-Positive Gastric Cancer Patients without HER2 Status Immediately Prior to Second-Line Treatment

Acronym

EN-ABLE study

Scientific Title

A Multicenter Prospective Observational Study Evaluating Effectiveness and Safety of Trastuzumab Deruxtecan in HER2-Positive Gastric Cancer Patients without HER2 Status Immediately Prior to Second-Line Treatment

Scientific Title:Acronym

EN-ABLE study

Region

Japan


Condition

Condition

HER2-positive gastric cancer

Classification by specialty

Gastroenterology Gastrointestinal surgery

Classification by malignancy

Malignancy

Genomic information

NO


Objectives

Narrative objectives1

To evaluate the effectiveness and safety of T-DXd as second-line treatment in real-world patients with initially HER2-positive gastric cancer whose HER2 status has not been reassessed immediately prior to second-line treatment initiation.

Basic objectives2

Safety,Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Objective response rate (ORR)

Key secondary outcomes

・Overall survival (OS)
・Progression-free survival (PFS)
・Time to treatment failure (TTF)
・Disease control rate (DCR)
・Duration of response (DOR)
・Time to response (TTR)
・Early tumor shrinkage (ETS)
・Depth of response (DpR)
・Adverse events
-Adverse events of Grade >= 3
-Interstitial lung disease (ILD) of any grade
-Adverse events resulting in dose reduction and interruption of T-DXd


Base

Study type

Observational


Study design

Basic design


Randomization


Randomization unit


Blinding


Control


Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms


Purpose of intervention


Type of intervention


Interventions/Control_1


Interventions/Control_2


Interventions/Control_3


Interventions/Control_4


Interventions/Control_5


Interventions/Control_6


Interventions/Control_7


Interventions/Control_8


Interventions/Control_9


Interventions/Control_10



Eligibility

Age-lower limit


Not applicable

Age-upper limit


Not applicable

Gender

Male and Female

Key inclusion criteria

1) Patients with unresectable advanced or recurrent gastric cancer (gastric adenocarcinoma or gastroesophageal junction adenocarcinoma) that
has progressed after prior chemotherapy
2) Patients diagnosed with HER2-positive gastric cancer prior to first-line therapy based on pathological assessment (IHC 3+ or IHC 2+ and ISH-positive)
3) Patients with a history of receiving first-line chemotherapy including trastuzumab
4) Patients planned to receive T-DXd as second-line therapy
5) Patients who have not undergone HER2 IHC testing between the initiation of trastuzumab in first-line therapy and the initiation of T-DXd in second-line therapy, or patients whose IHC test results were uninterpretable
6) Patients with measurable lesions
7) Patients with an Eastern Cooperative Oncology Group performance status (ECOG PS) of 0-1
8) Patients who have provided written informed consent

Key exclusion criteria

1) Patients with a history of hypersensitivity to T-DXd or its components
2) Patients with prior treatment with T-DXd
3) Patients with active multiple primary cancers that are considered by the investigator to potentially affect the evaluation of T-DXd
4) Patients with a history of perioperative treatment who initiated trastuzumab-containing chemotherapy within 6 months after the completion of the perioperative Treatment
5) Patients deemed ineligible for this study by the investigator

Target sample size

100


Research contact person

Name of lead principal investigator

1st name Mitsuro
Middle name
Last name Kanda

Organization

Nagoya University Graduate School of Medicine

Division name

Department of Gastroenterological Surgery

Zip code

466-8550

Address

65 Tsurumaicho, Showa-ku, Nagoya, Aichi, Japan

TEL

052-741-2111

Email

kanda.mitsuro.v5@f.mail.nagoya-u.ac.jp


Public contact

Name of contact person

1st name Tatsuya
Middle name
Last name Ota

Organization

EPS Corporation

Division name

Clinical Research Center Real World Evidence Business Headquarters

Zip code

162-0814

Address

Acropolis TOKYO Bldg., 6-29 Shinogawamachi, Shinjuku-ku, Tokyo, Japan

TEL

03-5804-5045

Homepage URL


Email

prj-en-able@eps.co.jp


Sponsor or person

Institute

NAGOYA UNIVERSITY HOSPITAL

Institute

Department

Personal name



Funding Source

Organization

DAIICHI SANKYO COMPANY, LIMITED

Organization

Division

Category of Funding Organization

Profit organization

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Nihonbashi Sakura Clinic Research Ethics Committee

Address

c-irb_ug@neues.co.jp

Tel

03-6777-1480

Email

c-irb_ug@neues.co.jp


Secondary IDs

Secondary IDs

NO

Study ID_1


Org. issuing International ID_1


Study ID_2


Org. issuing International ID_2


IND to MHLW



Institutions

Institutions

名古屋大学医学部附属病院(愛知県)、愛知県がんセンター(愛知県)、他 58施設


Other administrative information

Date of disclosure of the study information

2026 Year 09 Month 21 Day


Related information

URL releasing protocol


Publication of results

Unpublished


Result

URL related to results and publications


Number of participants that the trial has enrolled


Results


Results date posted


Results Delayed


Results Delay Reason


Date of the first journal publication of results


Baseline Characteristics


Participant flow


Adverse events


Outcome measures


Plan to share IPD


IPD sharing Plan description



Progress

Recruitment status

Preinitiation

Date of protocol fixation

2026 Year 07 Month 22 Day

Date of IRB

2026 Year 07 Month 22 Day

Anticipated trial start date

2026 Year 10 Month 01 Day

Last follow-up date

2028 Year 09 Month 30 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information

-


Management information

Registered date

2026 Year 07 Month 23 Day

Last modified on

2026 Year 07 Month 23 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000071303