A Study of CM350 in Patients With Advanced Solid Tumors

A Multicenter, Open Label, Phase I/II Clinical Study of CM350 in Patients With Advanced Solid Tumors

This is an open label, dose escalation and expansion Phase I/II study to evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics, immunogenicity, and preliminary efficacy of CM350 in patients with advanced solid tumors.

The phase I study consists of a dose escalation phase and a dose expansion phase The safety and tolerability of CM350 and the maximum tolerated dose (MTD) (if applicable) will be evaluated in dose escalation phase.

The recommended phase 2 dose (RP2D) of CM350 will be determined in dose expansion phase.

The phase II study is to evaluate the efficacy of CM350 at the recommended phase 2 dose (RP2D) for advanced glypican-3 (GPC3)-positive solid tumors.

Study Overview

• Status: Recruiting
• Conditions: Advanced Solid Tumor
• Intervention / Treatment: Biological: CM350 group1; Biological: CM350 group2; Biological: CM350 group3

• Study Type: Interventional
• Enrollment (Estimated): 248
• Phase: Phase 2; Phase 1

Contacts and Locations

• Study Contact: Name: Qian Jia; Phone Number: +862888610620; Email: qianjia@keymedbio.com

Study Locations

• China
  • Shanghai, China
    • Recruiting
    • Zhongshan Hospital Affiliated to Fudan University
    • Contact: Jia Fan
  • Sichuan
    • Chengdu, Sichuan, China
      • Recruiting
      • West China Hospital of Sichuan University
      • Contact: Yongsheng Wang

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 75 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Patient with histologically or cytologically confirmed advanced solid tumors that is refractory to or intolerable with standard treatment, or for which no standard treatment is available.
• hepatocellular-cancer(HCC) participants must have a Barcelona Clinic Liver Cancer (BCLC) stage of B (ineligible for liver surgery and/or other locoregional treatments, or disease progression after locoregional therapy) or stage C , or a China National Liver Cancer (CNLC) stage of IIb or III (ineligible for liver surgery and/or other locoregional treatments, or disease progression after locoregional therapy).
• HCC participants must have a Child-Pugh score of ≤7.
• Phase I dose escalation phase: participants must have evaluable lesions based on RECIST version 1.1.Phase I dose expansion phase and phase II: participants must have at least one measurable lesion.
• Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.

Exclusion Criteria:

• Patients who have received any cytotoxic chemotherapy, radiotherapy, biological therapy (oncologic vaccines, cytokines, or growth factors for cancer control), or any other investigational anticancer drug treatment (defined as treatments without regulatory approval for any indication) within 28 days before the first dose of CM350.

Note: For palliative radiotherapy to non-central nervous system lesions (total radiotherapy duration ≤14 days) to improve symptoms, a minimum washout period of 7 days before the first dose is required.

• Patients who have received any immunotherapy (including but not limited to PD-1, PD-L1, anti-cytotoxic T-lymphocyte-associated antigen 4 [CTLA-4], chimeric antigen receptor T-cell [CAR-T] therapy, etc.) within 28 days or 5 half-lives (whichever is shorter) before the first dose of CM350.
• Patients who have received targeted therapy within 28 days or 5 half-lives (whichever is shorter) before the first dose of CM350.
• Patients who have previously received any therapy targeting GPC3, including but not limited to monoclonal antibodies, peptide vaccines, CAR-T, and bispecific antibodies.
• Received chronic systemic corticosteroid therapy (daily intake of more than 10 mg prednisone or equivalent doses of other corticosteroids) or any other form of immunosuppressive treatment within 7 days before the first dose of CM350.
• Known active central nervous system metastases. Note: Participants with previously treated brain metastases that have been stable for at least 14 days before the first dose (confirmed by repeat imaging at least 4 weeks apart, with the repeat imaging conducted during the screening period) may be considered for enrollment.
• Participants with uncontrolled pleural effusion, ascites, or pericardial effusion as assessed by the investigator.
• History of other malignancies within 5 years before the first dose of CM350, excluding cured basal cell or squamous cell carcinoma of the skin, cervical carcinoma in situ, or ductal carcinoma in situ of the breast.
• Presence of active infection at screening as assessed by the investigator.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Non-Randomized
• Interventional Model: Sequential Assignment
• Masking: None (Open Label)

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Dose escalation phase in phase I; There are 11 target dose levels in dose escalation phase.	Biological: CM350 group1; CM350 will be administered intravenously (IV) once a week (QW) through step-up dosing until the participant discontinues study treatment, develops disease progression, initiates a new anti-tumor therapy, develops unacceptable toxicity, death, lost to follow-up, the investigator discontinue study treatment, or a female participant becomes pregnant (whichever occurs first).
Experimental: Dose expansion phase in phase I; Three or four doses will be selected for further evaluation in dose expansion phase to determine the RP2D (recommended phase 2 dose).	Biological: CM350 group2; CM350 will be administered intravenously (IV) once a week (QW) through step-up dosing until the participant discontinues study treatment, develops disease progression, initiates a new anti-tumor therapy, develops unacceptable toxicity, death, lost to follow-up, the investigator discontinue study treatment, or a female participant becomes pregnant (whichever occurs first).
Experimental: Phase II; The efficacy of CM350 will be evaluated at RP2D (recommended phase 2 dose) for advanced GPC3-positive solid tumors.	Biological: CM350 group3; CM350 will be administered intravenously (IV) once a week (QW). Individual subjects may continue study treatment until the participant discontinues study treatment, develops disease progression, initiates a new anti-tumor therapy, develops unacceptable toxicity, death, lost to follow-up, the investigator discontinue study treatment, or a female participant becomes pregnant (whichever occurs first).

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Dose escalation phase in phase I:Incidence of Adverse events（AEs）, including any abnormal physical examinations, abnormal vital signs, abnormal ECG, and abnormal lab testing.	Incidence of Adverse events（AEs）, including any abnormal physical examinations, abnormal vital signs, abnormal ECG, and abnormal lab testing.	Up to 5 years
Dose escalation phase in phase I:Dose-Limiting Toxicity (DLT).	Dose-Limiting Toxicity (DLT).	Up to 7 days after the first target dose
Dose escalation phase in phase I:Maximum tolerated dose (MTD) (if applicable).	Maximum tolerated dose (MTD) (if applicable).	Up to the end of dose escalation phase (3 years)
Dose expansion phase in phase I:To determine the recommended Phase 2 Dose (RP2D).	the efficacy including objective response rate (ORR), disease control rate (DCR), etc., safety, pharmacokinetics (PK) and pharmacodynamics (PD) profile of CM350 will be assessed.	Up to 5 years
Phase II:To evaluate the efficacy of CM350 in advanced glypican-3-positive solid tumors.	including objective response rate (ORR) per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 (Modified Response Evaluation Criteria in Solid Tumors [mRECIST] for liver cancer and RECIST v1.1) evaluated by investigator.	Up to 5 years

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Phase I & Phase II: Area Under the Curve from 0 to the time of the last quantifiable concentration (AUC0-t).	After first and multiple dosing	Up to 5 years
Phase I & Phase II: To assess the incidence of anti-drug antibody (ADA).	To assess the incidence of anti-drug antibody (ADA)	Up to 5 years
Phase I: To evaluate the objective response rate (ORR) per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 [Modified Response Evaluation Criteria in Solid Tumors (mRECIST) for liver cancer and RECIST v1.1].	To evaluate the objective response rate (ORR) per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 [Modified Response Evaluation Criteria in Solid Tumors (mRECIST) for liver cancer and RECIST v1.1]	Up to 5 years
Phase I & Phase II: To evaluate the duration of response (DOR) per RECIST v1.1(mRECIST for liver cancer and RECIST v1.1).	To evaluate the duration of response (DOR) per RECIST v1.1(mRECIST for liver cancer and RECIST v1.1)	Up to 5 years
Phase I & Phase II: To evaluate the disease control rate (DCR) per RECIST v1.1(mRECIST for liver cancer and RECIST v1.1).	To evaluate the disease control rate (DCR) per RECIST v1.1(mRECIST for liver cancer and RECIST v1.1)	Up to 5 years
Phase I & Phase II:To evaluate the time to response (TTR) per RECIST v1.1(mRECIST for liver cancer and RECIST v1.1.	To evaluate the time to response (TTR) per RECIST v1.1(mRECIST for liver cancer and RECIST v1.1	Up to 5 years
Phase I & Phase II:To evaluate the time to progression (TTP) per RECIST v1.1(mRECIST for liver cancer and RECIST v1.1).	To evaluate the time to progression (TTP) per RECIST v1.1(mRECIST for liver cancer and RECIST v1.1)	Up to 5 years
Phase I & Phase II:To evaluate the progression-free survival (PFS) per RECIST v1.1(mRECIST for liver cancer and RECIST v1.1).	To evaluate the progression-free survival (PFS) per RECIST v1.1(mRECIST for liver cancer and RECIST v1.1)	Up to 5 years
Phase I & Phase II:To evaluate the overall survival (OS)	To evaluate the overall survival (OS)	Up to 5 years
Phase I & Phase II:To assess the cytokine interleukin-2 (IL-2).	To assess the pharmacokinetic (PD) profile of CM350.	Up to 5 years
Phase II:Incidence of Adverse events（AEs）, including any abnormal physical examinations, abnormal vital signs, abnormal ECG, and abnormal lab testing.	Incidence of Adverse events（AEs）, including any abnormal physical examinations, abnormal vital signs, abnormal ECG, and abnormal lab testing.	Up to 5 years
Phase I & Phase II:Area Under the Curve over a dosing interval (AUC tau).	Area Under the Curve over a dosing interval (AUC tau).	Up to 5 years
Phase I & Phase II:Peak Plasma Concentration (Cmax).	Peak Plasma Concentration (Cmax)	Up to 5 years
Phase I & Phase II:Time of Maximum Observed Concentration (Tmax).	Time of Maximum Observed Concentration (Tmax)	Up to 5 years
Phase I & Phase II:Observed concentration at the end of a dosing interval (Ctrough).	Observed concentration at the end of a dosing interval (Ctrough)	Up to 5 years
Phase I & Phase II:To assess the cytokine interleukin-6 (IL-6).	To assess the cytokine interleukin-6 (IL-6)	Up to 5 years
Phase I & Phase II:To assess the cytokine interleukin-10 (IL-10).	To assess the cytokine interleukin-10 (IL-10)	Up to 5 years
Phase I & Phase II:To assess the cytokine interferon-gamma(IFN-γ).	To assess the cytokine interferon-gamma(IFN-γ)	Up to 5 years
Phase I & Phase II:To assess the cytokine tumor necrosis factor-alpha (TNF-α).	To assess the cytokine tumor necrosis factor-alpha (TNF-α)	Up to 5 years
Phase I & Phase II: To assess the Immunophenotyping cluster of differentiation 3 positive (CD3+).	To assess the Immunophenotyping cluster of differentiation 3 positive (CD3+).	Up to 5 years
Phase I & Phase II: To assess the Immunophenotyping cluster of differentiation 4 positive (CD4+).	To assess the Immunophenotyping cluster of differentiation 4 positive (CD4+).	Up to 5 years
Phase I & Phase II: To assess the Immunophenotyping cluster of differentiation 8 positive (CD8+).	To assess the Immunophenotyping cluster of differentiation 8 positive (CD8+).	Up to 5 years

Collaborators and Investigators

• Sponsor: Keymed Biosciences Co.Ltd
• Investigators: Principal Investigator: Jia Fan, Shanghai Zhongshan Hospital

Study record dates

Study Major Dates

• Study Start (Actual): April 21, 2022
• Primary Completion (Estimated): April 1, 2027
• Study Completion (Estimated): April 1, 2027

Study Registration Dates

• First Submitted: February 10, 2022
• First Submitted That Met QC Criteria: February 21, 2022
• First Posted (Actual): March 3, 2022

Study Record Updates

• Last Update Posted (Actual): May 4, 2025
• Last Update Submitted That Met QC Criteria: April 29, 2025
• Last Verified: April 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Neoplasms
• Other Study ID Numbers: CM350-030001

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No