A Study of MHB036C for Advanced Solid Tumor

A Phase I/II, Dose Escalation and Dose Expansion Study of MHB036C for Advanced Solid Tumor to Evaluate the Tolerability/Safety, Pharmacokinetics and Efficacy

Phase I/II, dose escalation and dose expansion study to evaluate the efficacy and safety of MHB036C in advanced malignant tumors.

Study Overview

• Status: Active, not recruiting
• Conditions: Advanced Solid Tumor
• Intervention / Treatment: Drug: MHB036C

Detailed Description

This first-in-human, dose escalation and dose expansion study is to evaluate the safety, tolerability, pharmacokinetics (PK), immunogenicity, pharmacodynamics (PD) and anti-tumor activity of MHB036C in patients with advanced solid tumor. The Phase I stage is to determine the maximum tolerated dose (MTD). The phase II stage is to determine the recommended Phase 2 dose (RP2D) according to safety and efficacy in specific tumor types.

• Study Type: Interventional
• Enrollment (Estimated): 200
• Phase: Phase 2; Phase 1

Contacts and Locations

Study Locations

• China
  • Shanghai, China, 200030
    • Shanghai Chest Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Participants voluntarily agree to participate in the study and sign the Informed Consent Form (ICF).
• Participants aged 18 years or older (inclusive), without gender limitation.
• Participants with Eastern Cooperative Oncology Group performance score of 0-1.
• Participants with expected survival time of more than 3 months.
• Eligible participants of childbearing potential (males and females) must agree to take reliable contraceptive measures (hormone or barrier method, or absolute abstinence, etc.) with their partners during the study and within at least 90 days after the last dose; female participants of childbearing potential must have a negative results of blood pregnancy test within 7 days before the first dose of the investigational product, and must be non-lactating.
• Participants who are able to understand study requirements, and willing and able to comply with arrangements of study and follow-up procedures.
• Participants to be enrolled in part one must have histologically or cytologically confirmed advanced or metastatic solid tumors, which have failed or are intolerant to standard of care (SOC), or for which no SOC is available;

Exclusion Criteria:

• Participants with 2 or more malignancies (except effectively treated non-melanoma skin cancer, cervical carcinoma in situ or other tumors, or malignancies considered cured) within 5 years prior to sign the Informed Consent Form.

• Participants who have received chemotherapy within 3 weeks prior to the first dose of investigational product, or have received anti-tumor therapy including radiation therapy, biologic therapy, endocrine therapy, immunotherapy, etc. within 4 weeks prior to the first dose; or participants with the following conditions:

  • Medication of nitrosourea or mitomycin C within 6 weeks prior to the first dose of MHB036C;
  • Medication of oral fluoropyrimidines or small molecule targeted agents within 5 half-lives of such drug before first dose of investigational product.
  • Medication of traditional Chinese medicine with anti-tumor indications within 2 weeks prior to the first dose of investigational product.
• Medication of other disapproved investigational products or therapies within 4 weeks prior to the first dose of investigational product.
• Presence of brain metastases and/or carcinomatous meningitis. Participants previously treated for brain metastases may be considered to be enrolled in this study, provided they have been in stable condition for at least 4 weeks, no evidence of new or enlarging brain metastases, or without steroid therapy within 14 days prior to the first dose of investigational product. This exception does not include carcinomatous meningitis, which should be excluded regardless of clinical stability.
• Participants previously received same targeted therapy will be excluded.
• Participants with adverse reactions from previous anti-tumor therapy that have not recovered to ≤Grade 1 as per CTCAE 5.0 (except for toxicities without safety risks as determined by the investigator, such as alopecia, hypothyroidism stably managed by hormone replacement therapy, etc.).

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: MHB036C; MHB036C IV every 3 weeks	Drug: MHB036C; An antibody-drug conjugate therapy

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Incidence of participants with adverse events (AE)	An AE is defined as any untoward medical occurrence in a participant administered a pharmaceutical product temporally associated with the use of study treatment, whether or not considered related to the study treatment.	Until 30 days after last dose of MHB036C
Number of participants with dose-limiting toxicity (DLT)	DLTs will be assessed during the dose-escalation phase and are defined as toxicities related to MHB036C which meet pre-defined severity criteria and occurs within the first cycle of treatment	At the end of Cycle 1 (each cycle is 21 days)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Maximum Plasma Concentration (Cmax)	To analysis the serum concentrations at different timepoints to determine the Cmax	Until 30 days after last dose of MHB036C
The area under the plasma concentration-time curve (AUC)	To analysis the serum concentrations at different timepoints to determine the AUC	Until 30 days after last dose of MHB036C
To detectable anti-drug antibodies with treated subjects	The immunogenicity of MHB036C will be assessed by the number of subjects who produce anti-drug antibodies (ADAs)	Until 30 days after last dose of MHB036C
Objective response rate (ORR)	The ORR is defined as the proportion of subjects with confirmed complete remission (CR) or confirmed partial response (PR), based on RECIST Version 1.1.	Until 30 days after last dose of MHB036C

Collaborators and Investigators

• Sponsor: Minghui Pharmaceutical (Hangzhou) Ltd
• Investigators: Principal Investigator: Shun Lu, Shanghai Chest Hospital

Study record dates

Study Major Dates

• Study Start (Actual): May 26, 2023
• Primary Completion (Estimated): December 1, 2025
• Study Completion (Estimated): December 1, 2026

Study Registration Dates

• First Submitted: April 15, 2024
• First Submitted That Met QC Criteria: April 17, 2024
• First Posted (Actual): April 18, 2024

Study Record Updates

• Last Update Posted (Actual): November 19, 2025
• Last Update Submitted That Met QC Criteria: November 16, 2025
• Last Verified: November 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Neoplasms
• Other Study ID Numbers: MHB036C-CP001CN

Drug and device information, study documents

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