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Imatinib and Pembrolizumab combination therapy for advanced KIT-mutant melanoma: a phase I/II trial (IMPAKT trial)

Imatinib in combination with Pembrolizumab in patients with advanced KIT-mutant melanoma following progression on standard therapy: a phase I/II trial (IMPAKT trial) - IMPAKT trial

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCTs031190202
Enrollment
22
Registered
2020-02-05
Start date
2020-12-23
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

Advanced KIT-mutant melanoma Other disease of skin or skin tissue

Interventions

P1: 3+3 design to evaluate safety and tolerability and identify maximum tolerated dose/administered. Level 1: Imatinib 200 mg/day, QD (day at 1-21), pembrolizumab 200 mg/body, Q3W (day at 1) Level 2:

Sponsors

Funakoshi Takeru
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Age 20 years or older on day of signing consent. 2) Has histologically or cytologically confirmed as malignant melanoma. 3) Has unresectable or metastatic KIT-mutant melanoma 4) Patients which is not controlled by standard therapy (immune checkpoint inhibitor, molecular target drug etc.) 5) Has been untreated for advanced or metastatic disease by imatinib. 6) Has resolution of toxic effects of the most recent prior therapy. 7) Has the presence of at least one measurable lesion by image per RECIST 1.1. 8) Has an Eastern Cooperative Oncology Group (ECOG) performance status 0 to 1. 9) Life expectancy of greater than 90 days 10) Has no-central nerve system (CNS) metastasis or asymptomatic CNS metastasis. 11) Agreed to use an adequate method of contraception within the project duration of the study, starting with the visit through 120 days after the last dose of the study treatment. 12) Has laboratory parameters within Protocol-defined range. The screening laboratory tests below must be = 2,000/mm3 , absolute neutrophil count >= 1,500/mm3 -Platelets >= 100,000/mm3 -Hemoglobin >= 9.0g/dl -Aspartate aminotransferase (AST), alanine aminotransferase (ALT) <= 150 IU/L -Bilirubin <= 2.0mg/dl -Serum creatinine <= 1.5mg/dl 13) Provide written informed consent for the study.

Exclusion criteria

Exclusion criteria: 1) Seropositivity to HBsAg or HCVAb. 2) Has known history of HIV. 3) Has active infection, clinically significant cardiac disease, including unstable angina and arrhythmia, interstitial pneumonia, psychiatric disorder. 4) Has grade 3 or worse superior vena cava syndrome, pericardial effusion, pleural effusion, ascites. 5) Has uncontrolled disease that might confound the results of the study, or is not best interest of the subject to participate, in the opinion of the treating investigator. 6) Has double cancer (completely resected basal cell carcinoma, carcinoma in situ, or superficial bladder cancer, or patients with other cancers that do not show recurrence for more than 3 years before obtaining consent)

Design outcomes

Primary

MeasureTime frame
Response rate after administration of four dosing cycle

Secondary

MeasureTime frame
Progression-free survival, overall survival, best overall response, adverse event type/ frequency/ severity (CTCAE 5.0).

Contacts

Public ContactTakeru Funakoshi

Department of Dermatology Keio University School of Medicine

takeruf@keio.jp+81-3-5363-3823

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026