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GR1803 Injection in Patients With Relapsed/Refractory Multiple Myeloma

Single-Arm, Open, Multi-Center Phase II Clinical Trial of the Efficacy, Safety, Pharmacokinetics, and Immunogenicity of GR1803 Injection in Patients With Relapsed/Refractory Multiple Myeloma

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06566547
Enrollment
116
Registered
2024-08-22
Start date
2024-08-26
Completion date
2027-08-01
Last updated
2026-05-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Multiple Myeloma

Brief summary

All subjects will receive GR1803 injection until intolerable toxicity or investigator-assessed disease progression occurs (except in cases of disease progression due to discontinuation of the drug as a result of an adverse event) or until the subject has been administered the drug for 2 years or until the subject withdraws consent or until the investigator determines that the subject needs to be discontinued.

Interventions

D1 given at a dose of 30ug/kg, D4 given at a dose of 90ug/kg, D8 given at a dose of 180ug/kg, followed by weekly dosing up to cycle 9, and cycle 10 and onwards, every 2 weeks, with a dosing cycle of every 4 weeks

Sponsors

Genrix (Shanghai) Biopharmaceutical Co., Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* 1、ECOG score 0-2 2、≥18 years of age 3、Multiple myeloma must be measurable by central laboratory assessment: Serum monoclonal paraprotein (M-protein) level ≥0.5 g/dL or urine M-protein level ≥200 mg/24 hours; or Light chain multiple myeloma without measurable disease in the serum or the urine: Serum immunoglobulin free light chain (FLC) ≥10 mg/dL and abnormal serum immunoglobulin kappa lambda FLC ratio.

Exclusion criteria

* 1、Prior treatment with any BCMA-targeted therapy 2、Known active CNS involvement or exhibits clinical signs of meningeal involvement of multiple myeloma 3、Known allergies, hypersensitivity, or intolerance to the study drug (teclistamab) or its excipients 4、Plasma cell leukemia , Waldenström's macroglobulinemia, POEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, monoclonal protein, and skin changes), or primary amyloid light-chain amyloidosis.

Design outcomes

Primary

MeasureTime frameDescription
ORR evaluated by IRC2 yearsSum of the proportions of patients with proven strict complete remission (sCR), complete remission (CR), very good partial remission (VGPR) and partial remission (PR)

Secondary

MeasureTime frameDescription
ORR evaluated by investigator2 yearsSum of the proportions of patients with proven strict complete remission (sCR), complete remission (CR), very good partial remission (VGPR) and partial remission (PR)
Progression-free survival (PFS) evaluated by IRC2 yearsTime from enrollment to tumor progression or death from any cause
MRD negative rate2 yearsProportion of subjects with at least 1 negative MRD after treatment
AE2 yearsadverse event

Countries

China

Contacts

PRINCIPAL_INVESTIGATORJie Jin, PhD

First Affiliated Hospital of Zhejiang University

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 28, 2026