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Phase I/II Clinical Study of JMT108 Injection for the Treatment of Advanced Malignant Melanoma and Urinary Tract Tumors

Open-Label, Multicenter Phase I/II Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Efficacy of JMT108 Injection in Participants With Unresectable or Metastatic Melanoma and Urinary Tract Tumors

Status
Recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07280832
Enrollment
500
Registered
2025-12-12
Start date
2025-12-17
Completion date
2027-05-30
Last updated
2026-08-18

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

Conditions

Unresectable Locally Advanced or Metastatic Melanoma, Unresectable Locally Advanced or Metastatic Urinary Tract Tumors

Brief summary

This is an open-label, multicenter Phase I/II clinical study conducted in participants with unresectable locally advanced or metastatic melanoma and urinary tract tumors, 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.

Interventions

DRUGJMT108

Intravenous (IV) administration

Sponsors

Shanghai JMT-Bio Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Masking description

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

Intervention model description

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

Eligibility

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

Inclusion criteria

1. Age≥18 years old. 2. Histologically or cytologically confirmed unresectable locally advanced or metastatic melanoma and urinary tract tumors. 3. Participants with unresectable locally advanced or metastatic melanoma or urinary tract tumors who have failed prior standard treatment or have no available standard treatment will be enrolled in Phase I; those who have received or not received prior standard treatment will be enrolled in Phase IIa and Phase IIb. 4. According to the response evaluation criteria for solid tumors (RECIST 1.1), having at least one measurable lesion. 5. ECOG PS of 0-1. 6. Expected survival ≥ 3 months. 7. Participants with adequate organ functions. 8. 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. 9. Voluntarily agree to participate in the study and sign the informed consent.

Exclusion criteria

1. Within 4 weeks prior to the first administration of the investigational drug, the patient had received chemotherapy, radiotherapy, biologic therapy, endocrine therapy, targeted therapy (excluding small-molecule targeted drugs), immunotherapy, or other unmarketed investigational drugs or treatments; for small-molecule targeted drugs, use was within 2 weeks prior to the first administration of the investigational drug or within 5 half-lives of the drug (whichever is longer, not exceeding 4 weeks); and antitumor-indicated traditional Chinese medicine/products were used within 2 weeks prior to the first administration of the investigational drug. 2. Prior use of IL-2/IL-15 cytokine therapy. 3. 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. 4. 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). 5. Known active central nervous system (CNS) metastases and/or leptomeningeal metastases. Patients with stable brain metastases who do not require local treatment for brain metastases are eligible for inclusion. 6. Patients with active infections requiring intravenous anti-infective therapy within 14 days prior to the first administration. 7. Has a history of severe cardiovascular and cerebrovascular diseases. 8. Has active or recurrent autoimmune diseases. 9. 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. 10. Has a history of arterial or venous thrombosis within 6 months prior to the first administration. 11. Has a history of serous effusions such as ascites or pleural effusion requiring drainage within 14 days prior to the first administration. 12. Has a history of other malignant tumors within 5 years prior to the first administration or concurrent other malignant tumors.

Design outcomes

Primary

MeasureTime frameDescription
Dose-Limiting Toxicity (DLT) (Phase I)Approximately 28 days.To evaluate the safery of JMT108 in subjects.
Adverse Events (AEs) (Phase I)Through study completion, an average of 1 yearTo evaluate the safery of JMT108 in subjects.
Overall Response Rate (ORR) (Phase II)To evaluate the efficacy of JMT108 in subjects.Through study completion, an average of 1 year.

Secondary

MeasureTime frameDescription
Maximum plasma concentration (Cmax)Through study completion, an average of 1 year.To evaluate the systemic pharmacokinetics of JMT108 in subjects.

Countries

China

Contacts

CONTACTClinical Trials Information Group officer
ctr-contact@cspc.cn86-0311-69085587

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 19, 2026