A Phase 1 Study of SHR-A1811 in Patients With Selected HER2 Expressing Tumors

February 4, 2026 updated by: Jiangsu HengRui Medicine Co., Ltd.

Safety, Tolerability, Pharmacokinetics, and Antitumour Activity of SHR-A1811, in Patients With HER2-expressing Advanced Gastric or Gastroesophageal Junction Adenocarcinoma and Colorectal Cancer: a Phase 1 Study

This is a single arm, open-label, dose escalation, PK expansion and efficacy expansion study of phase I. The purpose of this study is to assess the tolerability, safety, pharmacokinetics and immunogenicity of SHR-A1811 and preliminary anti-tumor efficacy in HER2-expressing advanced gastric or gastroesophageal junction adenocarcinoma and colorectal cancer.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

101

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • China
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, China, Shanghai
        • Shanghai East Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Has a pathologically or cytologically documented advanced/unresectable or metastatic gastric or gastroesophageal junction adenocarcinoma and colorectal cancer that is refractory to or intolerable with standard treatment, or for which no standard treatment is available.
  • At least one evaluable or measurable lesion should be present and identified according to Response Evaluation Criteria in Solid Tumors(RECIST) version 1.1.
  • Has an ECOG PS 0-1.
  • Has a life expectancy of ≥ 3 months.
  • Has adequate organ function

Exclusion Criteria:

  • Has unresolved toxicities from previous anticancer therapy, defined as toxicities not yet resolved to NCI-CTCAE version 5.0 grade ≤ 1.
  • Has received HER2 antibody drug conjugates,.
  • Central nervous system metastasis or meningeal metastasis with clinical symptoms
  • Has active infection requiring systemic treatment.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: SHR-A1811
Drug: SHR-A1811
There are six pre-defined dose regimens . Subjects will be enrolled with an initial dose

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
DLT and the recommended Phase 2 dose (RP2D)
Time Frame: Subjects will be treated and observed for dose-limiting toxicity(DLT) through the end of the first cycle (Days 1-21).
Subjects will be treated and observed for dose-limiting toxicity(DLT) through the end of the first cycle (Days 1-21).

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Jiangsu HengRui Medicine Co., Ltd.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 30, 2021

Primary Completion (Actual)

March 28, 2025

Study Completion (Actual)

March 28, 2025

Study Registration Dates

First Submitted

August 12, 2020

First Submitted That Met QC Criteria

August 12, 2020

First Posted (Actual)

August 14, 2020

Study Record Updates

Last Update Posted (Actual)

February 6, 2026

Last Update Submitted That Met QC Criteria

February 4, 2026

Last Verified

February 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • SHR-A1811-I-102

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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