RecruitingPhase Ib/IICTR20252876Novel bispecific antibody targeting BCMA (GR1803)

Novel bispecific antibody targeting BCMA · relapsed/refractory multiple myeloma Phase Ib/II clinical trial

Official protocol title:An Open-Label, Multicenter Phase Ib/II Clinical Trial Evaluating the Safety, Pharmacokinetics, Immunogenicity, and Preliminary Efficacy of GR1803 Injection in Combination with an Anti-CD38 Monoclonal Antibody in Participants with Relapsed/Refractory Multiple Myeloma (RRMM) Who Have Received at Least 1 Prior Line of Therapy (Including Lenalidomide and a Proteasome Inhibitor)

Sponsor: Chongqing Zhixiang Jintai Biological Pharmacy Co., Ltd.Updated: 9/7/2026
Target CohortRelapsed/refractory(Synthesized by CMDN from protocol summary; final eligibility confirmed by study doctors)

Trial Summary

This study is a Phase Ib/II clinical trial sponsored by Chongqing Zhixiang Jintai Biological Pharmacy Co., Ltd., mainly targeting patients with relapsed/refractory multiple myeloma (RRMM) who have received at least 1 prior line of therapy (which must include lenalidomide and a proteasome inhibitor) and have not received prior BCMA-targeted therapy. The treatment regimen consists of an innovative biologic product (GR1803 Injection) combined with an anti-CD38 monoclonal antibody (subcutaneous daratumumab / Darzalex Faspro), administered regularly until disease progression or up to 2 years (whichever occurs first). The trial is currently being conducted across a total of 3 core hospitals in China: The First Affiliated Hospital of Xi'an Jiaotong University, Shanghai Fourth People's Hospital Affiliated to Tongji University, and Xiangya Hospital Central South University.

Participating Centers0 in China + 3 overseas

The First Affiliated Hospital of Xi'an Jiaotong University
Shanghai Fourth People's Hospital Affiliated to Tongji University
Xiangya Hospital Central South University

Source and Verification

Every fact on this page is derived from the official study protocol document below. The source document is archived as a PDF for direct verification.

Document type
CDE clinical trial registration filing (original PDF)
Official registration number
CTR20252876
Verify on the NMPA CDE public platformby entering CTR20252876 in the registration-number field. The platform is a search interface with no permanent per-study URL, so a direct link is not possible.
Last reconciled
2026-09-07

Frequently Asked Questions about this Study

Structured facts derived from official protocol filings for patient and family reference

QWhich patient group is targeted by this clinical trial?

According to official protocol filings (target population synthesized by CMDN from study details, not an official CDE field), this study is primarily designed for patients with [Relapsed/refractory]. Eligibility requires verified clinical confirmation by investigators regarding prior lines of therapy, active disease biomarkers, and performance status.

QWhat are the specific eligibility criteria regarding age, performance status, and prior therapy?

According to verified protocol filings, key eligibility thresholds include: age ≥ 18 years, ECOG performance status ≤ 2, ≥ 1 prior lines of therapy. The study specifies 6 inclusion and 22 exclusion criteria covering detailed organ function and medical history. Final enrollment confirmation is determined by investigators at participating hospital trial centers.

QWhat are the investigational targets and mechanism of action?

The core therapeutic target or investigational mechanism is [Novel bispecific antibody targeting BCMA (GR1803)]. It aims to selectively eradicate clonal plasma cells or redirect anti-tumor immune responses, representing an active area of precision hematology research.

QWhat clinical phase is this study in?

This study is registered as a [Phase Ib/II] clinical trial. The protocol is conducted under rigorous ethical and Good Clinical Practice (GCP) oversight approved by institutional ethics committees.

QWhere are the participating hospital trial centers located?

This is an international multi-centre study with 0 study centres in China and 3 overseas centres. The lead institution is [The First Affiliated Hospital of Xi'an Jiaotong University]. Prominent sites include The First Affiliated Hospital of Xi'an Jiaotong University, Shanghai Fourth People's Hospital Affiliated to Tongji University, Xiangya Hospital Central South University. Eligible domestic patients can seek screening at the nearest participating centre.

QWhat is the official trial registration code and how can it be verified?

The official public registration identifier for this protocol is [CTR20252876] (CDE_CTR). Patients and researchers can verify registration details and regulatory authorizations directly on the official NMPA CDE platform.

Note for International Patients: Trial centers for this study are located in China. Interventional trials strictly comply with domestic Human Genetic Resources (HGRAC) regulations and standard hospital protocols, which generally restrict enrollment to residents with domestic healthcare identification. International patients seeking approved cellular therapies should review commercial options.

Key Information

Status

Recruiting

Phase

Phase Ib/II

Target / Therapy

Novel bispecific antibody targeting BCMA (GR1803)

Sponsor

Chongqing Zhixiang Jintai Biological Pharmacy Co., Ltd.

Principal Investigator

Pengcheng He

Lead Institution

The First Affiliated Hospital of Xi'an Jiaotong University

Participating Centers

0 in China + 3 overseas

CDE Registry ID

CTR20252876

ClinicalTrials.gov ID

NCT07090954

Trial information is translated from the Chinese source record and reviewed by CMDN. Confirm current status and eligibility with the study team.

Where this study sits in the landscape

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Keywords

Zhixiang JintaiPhase Ib/IImultiple myelomaGR1803anti-CD38 monoclonal antibodydaratumumabbiological productsCTR20252876

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Patient Rights & Safety Assurance

Protocol drugs and related tests are fully covered by the sponsor. All studies are strictly supervised by ethics committees, and patients retain the legal right to withdraw at any time.

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