Phase I/II Clinical Study of JMT108 Injection for the Treatment of Advanced Malignant Melanoma

NCT07280832 | Recruiting Phase 1

• 1 other identifier: JMT108-003
• Study Type: interventional
• Target: 188
• Locations: 1 country
• Sites: 1

Brief Summary

This is an open-label, multicenter Phase I/II clinical study conducted in participants with unresectable locally advanced or metastatic melanoma, aiming to evaluate the safety, tolerability, pharmacokinetic characteristics, and efficacy of JMT108 Injection in this population. The study consists of Phase I and Phase II (including Phase IIa and Phase IIb), where Phase I is the dose-escalation stage, Phase IIa is the dose-expansion stage, and Phase IIb is the cohort-expansion stage.

Conditions

Unresectable Locally Advanced or Metastatic Melanoma

Outcome Measures

Primary Outcomes (3)

• Dose-Limiting Toxicity (DLT) (Phase I)

  To evaluate the safery of JMT108 in subjects.

  Approximately 28 days.

• Adverse Events (AEs) (Phase I)

  To evaluate the safery of JMT108 in subjects.

  Through study completion, an average of 1 year

• Overall Response Rate (ORR) (Phase II)

  Through study completion, an average of 1 year.

  To evaluate the efficacy of JMT108 in subjects.

Secondary Outcomes (1)

• Maximum plasma concentration (Cmax)

  Through study completion, an average of 1 year.

Study Arms (4)

Phase I: Dose Escalation Stage

EXPERIMENTAL

JMT108 intravenous (IV) administration, use as specified in the clinical study protocol.

Drug: JMT108

Phase IIa: Dose Expansion Stage

EXPERIMENTAL

The administered dose of JMT108 selected by the SMC.

Drug: JMT108

Phase IIb: Cohort 1

EXPERIMENTAL

RP2D of JMT108 selected by the SMC.

Drug: JMT108

Phase IIb: Cohort 2

EXPERIMENTAL

RP2D of JMT108 selected by the SMC.

Drug: JMT108

Interventions

JMT108 DRUG

Intravenous (IV) administration

Phase I: Dose Escalation Stage; Phase IIa: Dose Expansion Stage; Phase IIb: Cohort 1; Phase IIb: Cohort 2

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Age≥18 years old.
• Histologically or cytologically confirmed unresectable locally advanced or metastatic melanoma.
• Participants with unresectable locally advanced or metastatic melanoma who have failed prior standard treatment or have no available standard treatment will be enrolled in Phase I and Phase IIa; those who have received or not received prior standard treatment will be enrolled in Phase IIb.
• According to the response evaluation criteria for solid tumors (RECIST 1.1), having at least one measurable lesion.
• ECOG PS of 0-1.
• Expected survival ≥ 3 months.
• Participants with adequate organ functions.
• Female and male patients of childbearing age agree to take adequate contraceptive measures during and upon completion of the study for 6 months after the last dose. Female participants of childbearing age must have a negative blood pregnancy test within 7 days before the first dose or randomization.
• Voluntarily agree to participate in the study and sign the informed consent.

You may not qualify if:

• Received chemotherapy, radiotherapy, biotherapy, endocrine therapy, targeted therapy, immunotherapy, or other unapproved clinical trial drugs or treatments within 4 weeks prior to the first administration of the study drug.
• Prior use of IL-2/IL-15 cytokine therapy.
• Received major organ surgery (excluding needle biopsy) or experienced severe trauma within 4 weeks prior to the first administration of the study drug, or requires elective surgery during the study period.
• Received systemic glucocorticoids or other immunosuppressive therapy within 14 days prior to the first use of the study drug. Exceptions include the following situations: receiving physiological replacement doses of hydrocortisone or other equivalent doses of hormonal therapy (i.e., prednisone ≤ 10 mg/day or other equivalent doses of hormones); receiving topical, ophthalmic, intra-articular, intranasal, and inhaled glucocorticoid therapy; receiving short-course glucocorticoids for preventive treatment (e.g., prevention of contrast agent allergy).
• Patients with active infections requiring intravenous anti-infective therapy within 14 days prior to the first administration.
• Has a history of severe cardiovascular and cerebrovascular diseases.
• Has active or recurrent autoimmune diseases.
• Has a known history of receiving immunotherapy with the occurrence of grade ≥3 immune-related adverse events (irAEs) (excluding immune-related endocrine abnormalities that have been stabilized) or grade ≥2 immune-related myocarditis.
• Has a history of arterial or venous thrombosis within 6 months prior to the first administration.
• Has a history of serous effusions such as ascites or pleural effusion requiring drainage within 14 days prior to the first administration.
• Has a history of other malignant tumors within 5 years prior to the first administration or concurrent other malignant tumors.

Sponsors & Collaborators

• Shanghai JMT-Bio Inc.: lead

Study Sites (1)

BeiJing Cancer Hospital EC

Beijing, Beijing Municipality, China

RECRUITING

MeSH Terms

Conditions

Melanoma

Condition Hierarchy (Ancestors)

Neuroendocrine Tumors; Neuroectodermal Tumors; Neoplasms, Germ Cell and Embryonal; Neoplasms by Histologic Type; Neoplasms; Neoplasms, Nerve Tissue; Nevi and Melanomas; Skin Neoplasms; Neoplasms by Site; Skin Diseases; Skin and Connective Tissue Diseases

Central Study Contacts

Clinical Trials Information Group officer

CONTACT

86-0311-69085587; ctr-contact@cspc.cn

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: NON RANDOMIZED
• Masking: NONE
• Masking Details: This is an open-label, multicenter Phase I/II clinical study
• Purpose: TREATMENT
• Intervention Model: SEQUENTIAL
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Model Details: This is an open-label, multicenter Phase I/II clinical study

Study Record Dates

• First Submitted: November 28, 2025
• First Posted: December 12, 2025
• Study Start: December 17, 2025
• Primary Completion (Estimated): November 30, 2026
• Study Completion (Estimated): May 30, 2027
• Last Updated: January 7, 2026

Record last verified: 2025-11

Locations

CN (1)