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Dose Escalation and Expansion Study of CM313 in Subjects With Relapsed or Refractory Multiple Myeloma and Lymphoma

A Phase I, Multiple Center, Open-label, Dose Escalation and Dose Expansion Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Preliminary Efficacy of CM313 in Subjects With Relapsed or Refractory Multiple Myeloma and Lymphoma

Status
UNKNOWN
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04818372
Enrollment
87
Registered
2021-03-26
Start date
2021-04-26
Completion date
2023-04-30
Last updated
2021-11-12

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

Conditions

Lymphoma, Multiple Myeloma

Brief summary

This is a multi-center, open-label, dose escalation and dose expansion, Phase 1 study to evaluate the safety, tolerability, PK and preliminary anti-tumor activity of CM313. The dose escalation part will determine the MTD of CM313 in subjects with relapsed and/or refractory multiple myeloma (RRMM) or lymphoma based on a modified 3+3 dose escalation design (an accelerated dose titration design followed by traditional 3+3 dose escalation design). The dose expansion part includes two cohorts. Cohort 1 will evaluate the safety and preliminary anti-tumor activity of CM313 in combination with Dexamethasone in subjects with RRMM. Cohort 2 will evaluate the safety and preliminary anti-tumor activity of CM313 in combination with Rd regimen (Lenalidomide/Dexamethasone) in subjects with RRMM or newly diagnosed MM (NDMM).

Interventions

DRUGCM313-Dose escalation

Subjects will receive a single dose of CM313 followed by a 3-week period for DLT observation. After that subjects will have 6 infusions at weekly intervals.

DRUGCM313

Subjects will have 8 infusions at weekly intervals, and then 8 infusions at bi-weekly intervals. After that CM313 will be given every 4 weeks until disease progression or unacceptable toxicity.

DRUGDexamethasone

dexamethasone 40 mg/day at day 1,8,15,22 at 28 days cycle

DRUGLenalidomide

25 mg/day lenalidomide 21 of 28 days cycle

Sponsors

Keymed Biosciences Co.Ltd
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Dose Escalation: Modified 3+3 dose escalation design: an accelerated dose titration design followed by traditional 3+3 dose escalation design

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * Dose escalation: subjects with RRMM who have progressed on, or could not tolerate, all available established therapies and subjects with recurrent and refractory lymphoma. * Dose expansion\_cohort 1: subjects with RRMM who have progressed on, or could not tolerate, all available established therapies. * Dose expansion\_cohort 2: subjects with RRMM who have progressed on, or could not tolerate, all available established therapies, or subjects with NDMM. * For MM: Documented initial diagnosis of multiple myeloma according to International Myeloma Working Group (IMWG) diagnostic criteria. * For MM: Serum monoclonal paraprotein (M-protein) level greater than or equal to (\>=) 0.5 gram per deciliter (g/dL) or urine M-protein level \>=200 milligram per 24 hours (mg/24 h) 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. * Eastern Cooperative Oncology Group (ECOG) performance status score \<=2. * Women of childbearing potential and male subjects must agree to remain abstinent or use contraceptive methods as defined by the protocol. * Side effects of any prior therapy or procedures for any medical condition has recovered to NCI-CTCAE v.5.0 Grade ≤ 1. Key

Exclusion criteria

* Previous treatment with any anti-CD38 therapy. * Subjects with concurrent plasma cell leukemia. * Received a cumulative dose of corticosteroids equivalent to greater than or equal to ( \>=) 140 milligram (mg) of prednisone within the 14-day period before the first dose of study drug (does not include pretreatment medication). * Vaccinated with live, attenuated vaccine within 4 weeks prior to the first dose. * Received an allogenic stem cell transplant or an autologous stem cell transplant within 3 months before first dose of study drug. * Central nervous system (CNS) involvement. * The forced expiratory volume in one second (FEV1)\<60%.

Design outcomes

Primary

MeasureTime frameDescription
Dose escalation: Number of Participants with a Dose-Limiting Toxicity (DLT)Up to 21 days after the first dose
Dose escalation and Dose expansion: Incidence, severity, and outcome of treatment emergent adverse events (TEAEs) and serious adverse events (SAEs) based on National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 5.0Up to 30 days after the last dose of CM313 or until the start of subsequent anticancer therapy, if earlier
Dose expansion: To evaluate the activity of CM313 in combination with Rd/Dexamethasone as assessed by overall response rate (ORR) in RRMM patientsUp to 24 monthsORR is defined as the proportion of participants who have a partial response (PR) or better according to the international myeloma working group (IMWG) criteria.

Secondary

MeasureTime frameDescription
Dose escalation: Overall Response Rate (ORR)up to 24 monthsORR is defined as the proportion of participants who have a partial response (PR) or better according to the IMWG criteria.
Dose escalation and Dose expansion: Clinical Benefit Rate (CBR)up to 24 monthsCBR is defined as the proportion of participants who have a minimal response (MR) or better according to the IMWG criteria.
Dose escalation: AUC to the last quantifiable concentration [AUC(0-last)], over the dosing interval [AUC(0-tau)], extrapolated to infinity [AUC(0-inf), time to Cmax (tmax), apparent half-life (t1/2), systemic clearance (CL).21 days after the first dose
Dose escalation and Dose expansion: Time to Response (TTR)From the date of initial documentation of a response to the date of first documented evidence of progressive disease (PD) (up to 24 months)TTR is defined as the time between date of first dose of study drug and the first efficacy evaluation that the participant has met all criteria for PR or better.
Dose escalation and Dose expansion: Progression-Free Survival (PFS)up to 24 monthsPFS is defined as time from date of first dose of study drug to date of first documented PD, per IMWG criteria, or death due to any cause, whichever occurs first.
Dose escalation and Dose expansion: Duration of Response (DOR)From the date of initial documentation of a response to the date of first documented evidence of progressive disease (PD) (up to 24 months)DOR is defined as time from date of initial documentation of a response (PR or better) to date of first documented evidence of PD, per IMWG criteria.or better according to the IMWG criteria.
Dose escalation and Dose expansion: AUC(0-last), AUC(0-tau), Cmax, t1/2, systemic clearance (CL), volume of distribution (Vz, Vss), minimum concentration (Cmin), Ctrough, accumulation ratios for Cmax and AUC(0-tau) for multiple dosesup to 24 months
Dose escalation and Dose expansion: Incidence of anti-CM313up to 24 months

Countries

China

Contacts

Primary ContactQian Jia
qianjia@keymedbio.com028-88610620
Backup ContactDan Liu
danliu@keymedbio.com028-88610620

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 8, 2026