A Clinical Study of SHR-5421 in Patients With Multiple Myeloma

June 11, 2026 updated by: Suzhou Suncadia Biopharmaceuticals Co., Ltd.

An Open-label, Multicenter, Phase I Study to Evaluate the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Efficacy of SHR-5421 in Patients With Multiple Myeloma

This is a Phase I, open-label, multicenter study to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and preliminary efficacy of SHR-5421 in patients with multiple myeloma (MM).

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

97

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 Contact

Study Locations

  • China
    • Beijing Municipality
      • Beijing, Beijing Municipality, China, 100044
        • Peking University People's Hospital
        • Principal Investigator:
          • Jin Lu
        • Contact:

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

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Age ≥ 18 years, male or female.
  2. Expected survival ≥ 3 months.
  3. ECOG performance status 0 or 1.
  4. Diagnosed with active multiple myeloma per IMWG criteria.
  5. Relapsed or refractory multiple myeloma and refractory to the most recent line of therapy.
  6. Disease progression or non-response to the most recent therapy.
  7. Measurable disease as defined by serum/urine M-protein or serum free light chain.
  8. Adequate bone marrow, hepatic, renal, and coagulation function.
  9. Female participants of childbearing potential and male participants with partners of childbearing potential must agree to use effective contraception.
  10. Willing and able to provide written informed consent and comply with study procedures.

Exclusion Criteria:

  1. Diagnosis of amyloidosis, plasma cell leukemia, Waldenström's macroglobulinemia, or POEMS syndrome.
  2. Central nervous system involvement by tumor.
  3. History of ≥ Grade 3 CRS with prior T-cell redirecting therapy.
  4. Requirement for dialysis or plasmapheresis within 14 days prior to study drug.
  5. Prior treatment-related AEs not recovered to ≤ Grade 1 (except alopecia, peripheral neuropathy, or controlled endocrinopathies).
  6. Concurrent participation in another clinical study.
  7. Prior anti-tumor therapy within specified washout periods.
  8. Major surgery within 28 days prior to informed consent or planned during the study.
  9. Live attenuated vaccine within 4 weeks prior to first dose or planned during the study.
  10. Significant comorbidity that in the investigator's judgment would interfere with study participation or safety.
  11. Active autoimmune disease (except controlled type I diabetes, hypothyroidism, or vitiligo).
  12. Active infection.
  13. Known hypersensitivity or contraindication to SHR-5421.

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: Sequential Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: SHR-5421 Group
SHR-5421 administered as multiple doses.
Drug: SHR-5421 for Injection
SHR-5421 for injection.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Determination of Phase II Dose (RP2D) of SHR-5421
Time Frame: 24 months.
24 months.

Secondary Outcome Measures

Outcome Measure
Time Frame
Incidence and severity of adverse events (AEs)
Time Frame: 24 months.
24 months.
Maximum plasma concentration (Cmax)
Time Frame: 24 months.
24 months.
Time to reach Cmax (Tmax)
Time Frame: 24 months.
24 months.
Objective response rate (ORR)
Time Frame: 24 months.
24 months.

Collaborators and Investigators

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

Sponsor

Suzhou Suncadia Biopharmaceuticals 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 (Estimated)

June 1, 2026

Primary Completion (Estimated)

April 1, 2028

Study Completion (Estimated)

April 1, 2029

Study Registration Dates

First Submitted

June 11, 2026

First Submitted That Met QC Criteria

June 11, 2026

First Posted (Actual)

June 17, 2026

Study Record Updates

Last Update Posted (Actual)

June 17, 2026

Last Update Submitted That Met QC Criteria

June 11, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • SHR-5421-101

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.

Clinical Trials on Multiple Myeloma

Clinical Trials on SHR-5421 for Injection

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Trinidad & Tobago

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe