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Imatinib Mesylate in Treating Patients With Stage III or Stage IV Melanoma That Cannot Be Removed by Surgery

A Phase II Study of Imatinib Mesylate (STI571;NSC#716051:IND 61135) in Patients With Inoperable AJCC Stage III or IV Melanoma Harboring Somatic Alterations of C-KIT

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00470470
Enrollment
30
Registered
2007-05-07
Start date
2007-04-30
Completion date
2014-10-31
Last updated
2014-12-23

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

Conditions

Acral Lentiginous Malignant Melanoma, Recurrent Melanoma, Stage IIIA Melanoma, Stage IIIB Melanoma, Stage IIIC Melanoma, Stage IV Melanoma

Brief summary

This phase II trial is studying how well imatinib mesylate works in treating patients with stage III or stage IV melanoma that cannot be removed by surgery. Imatinib mesylate may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

Detailed description

PRIMARY OBJECTIVES: I. Determine the overall objective response rate (complete response and partial response) in patients with inoperable stage III or IV melanoma harboring somatic alterations in c-KIT treated with imatinib mesylate. SECONDARY OBJECTIVES: I. Determine the time to progression in patients treated with this drug. II. Determine if c-KIT mutational status by DNA sequencing, DNA copy number status by fluorescent in situ hybridization (FISH) or comparative genomic hybridization, and/or protein expression by immunohistochemistry (IHC) can best predict clinical benefit from imatinib mesylate. TERTIARY OBJECTIVES: I. To evaluate tumors resistant to small molecule inhibitors of Kit for the development of secondary Kit mutations or for changes in Kit copy number. II. To evaluate for changes in Ki-67, phospho-Akt, phospho-MEK, phospho-S6, phospho STAT3, cleaved caspase 3, IGF-1R, and Kit expression in paired tumor samples obtained from patients treated with a small molecule inhibitor of Kit. III. To analyze baseline and post-resistance blood samples for soluble cKIT levels, soluble VEGFR1, soluble VEGFR2, VEGF, PlGF, FGF, and melanoma inhibitory activity (MIA) levels, and circulating tumor cells. IV. To analyze concomitant samples of blood and tumor for imatinib levels in patients treated with imatinib. OUTLINE: This is a multi-center study. Patients are stratified according to true amplification of c-KIT by FISH vs mutations by DNA sequencing. Patients receive oral imatinib mesylate twice daily for up to 12 weeks in the absence of disease progression or unacceptable toxicity. Tumor tissue samples or unstained tissue slides/paraffin blocks may be collected. c-KIT is evaluated by IHC and comparative genomic hybridization. After completion of study treatment, patients are followed up periodically.

Interventions

DRUGimatinib mesylate

Given orally

OTHERlaboratory biomarker analysis

Correlative studies

Sponsors

National Cancer Institute (NCI)
Lead SponsorNIH

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Histologically or cytologically confirmed inoperable stage III or IV melanoma that began on acral skin or mucosa * Patients with cutaneous melanoma that began on sun exposed sites of the skin and whose pathology demonstrates signs of sun damage (solar elastosis) involving the skin surrounding their primary melanoma are eligible * Must have sufficient tumor tissue available for FISH and DNA sequencing * Patients must have either a true amplification of 4q12 or a detectable mutation of c-KIT * If no banked tumor tissue is available, or if the available banked tumor tissue is insufficient for the necessary testing, then a repeat biopsy procedure will be required to collect the necessary tumor sample * Measurable disease according to Response Evaluation Criteria in Solid Tumors (RECIST) criteria * No known untreated brain or epidural metastases * Brain metastases that have been treated and deemed stable are allowed * ECOG performance status (PS) 0-2 OR Karnofsky PS 60-100% * Life expectancy greater than 3 months * WBC ≥ 3,000/mm³ * ANC ≥ 1,500/mm³ * Platelet count ≥ 100,000/mm³ * Bilirubin ≤ 1.5 times upper limit of normal (ULN) * Patients with unexplained hyperbilirubinemia that is clinically consistent with an inherited disorder of bilirubin metabolism (e.g., Gilbert's syndrome) may be eligible * AST and ALT ≤ 2.5 times ULN (5 times ULN if hepatic metastases are present) * Creatinine ≤ 1.5 times ULN * PT and PTT ≤ 1.5 times ULN * Not pregnant or nursing * Negative pregnancy test * Fertile patients must use effective contraception before and during study participation * No history of allergic reactions attributed to compounds of similar chemical or biological composition to imatinib mesylate * No concurrent uncontrolled illness including, but not limited to, any of the following: * Ongoing or active infection * Symptomatic congestive heart failure * Unstable anginapectoris * Cardiac arrhythmia resulting in hemodynamic instability * Intestinal malabsorption disorders * Psychiatric illness or social situations that would limit study compliance * Recovered to grade 1 from all prior therapies with the exception of alopecia * At least 2 weeks since prior radiotherapy (≤ 3,000 cGy to fields including substantial marrow) * At least 2 weeks since prior isolated limb infusion or perfusion (must have evidence of progression despite this therapy) * At least 2 weeks since prior chemotherapy * No more than 2 prior chemotherapy regimen for metastatic melanoma * Prior therapies with vaccines, targeted agents not believed to affect the kit proteins, cytokines, interferon-α, or intratumoral injections will NOT be considered prior therapy unless administered with a chemotherapy drug * No prior therapy with an inhibitor of the kit protein * No other concurrent investigational agents * No other concurrent anticancer agents or therapies * No concurrent antiretroviral therapy for HIV-positive patients * No concurrent inhibitors of CYP3A4, including any of the following: * Fluconazole, itraconazole, ketoconazole, macrolide antibiotics (azithromycin, clarithromycin, erythromycin, troleandomycin),midazolam, nifedipine, verapamil, diltiazem, terfenadine, cyclosporine and cisapride * Herbal extracts and tinctures with CYP3A4 inhibitory activity, including the following: * Hydrastis canadensis (goldenseal), Hypericum perforatum (St. John's wort),Uncaria tomentosa (cat's claw), Echinacea angustifolia roots, Trifolium pratense(wild cherry), Matricaria, chamomilla (chamomile), Glycyrrhiza glabra (licorice), dillapiol, hypericin, and naringenin * No concurrent inducers of CYP3A4, including any of the following: * Carbamazepine, phenobarbital, phenytoin, and rifampin

Design outcomes

Primary

MeasureTime frameDescription
Objective Response RateEvery 6 weeks for the first 3 courses and then every 12 weeks thereafterResponse will be evaluated in this study using the new international criteria proposed by the RECIST Committee. A Simon two-stage minimax design will be employed.

Secondary

MeasureTime frameDescription
Time to ProgressionTime from the treatment start to the date of disease progressionProgression will be evaluated in this study using the new international criteria proposed by the RECIST Committee. Time to progression will be estimated using the Kaplan-Meier method.

Countries

United States

Participant flow

Recruitment details

Protocol Open to Accrual: 04/05/2007 Protocol Closed to Accrual: 11/23/2010 Recruitment Location is the medical clinic

Participants by arm

ArmCount
Treatment (Enzyme Inhibitor Therapy)
Patients receive oral imatinib mesylate 400 mg twice daily for up to 12 weeks in the absence of disease progression or unacceptable toxicity. imatinib mesylate: Given orally laboratory biomarker analysis: Correlative studies
30
Total30

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyAdverse Event2
Overall StudyDeath2
Overall StudyNot treated1

Baseline characteristics

CharacteristicTreatment (Enzyme Inhibitor Therapy)
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
20 Participants
Age, Categorical
Between 18 and 65 years
10 Participants
Age, Continuous68.5 years
STANDARD_DEVIATION 27.57716447
Region of Enrollment
United States
30 participants
Sex: Female, Male
Female
17 Participants
Sex: Female, Male
Male
13 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
23 / 30
serious
Total, serious adverse events
18 / 30

Outcome results

Primary

Objective Response Rate

Response will be evaluated in this study using the new international criteria proposed by the RECIST Committee. A Simon two-stage minimax design will be employed.

Time frame: Every 6 weeks for the first 3 courses and then every 12 weeks thereafter

ArmMeasureGroupValue (NUMBER)
Treatment (Enzyme Inhibitor Therapy)Objective Response RateComplete Response1 participants
Treatment (Enzyme Inhibitor Therapy)Objective Response RatePartial Response3 participants
Treatment (Enzyme Inhibitor Therapy)Objective Response RateStable Disease14 participants
Treatment (Enzyme Inhibitor Therapy)Objective Response RateProgression of Disease7 participants
Secondary

Time to Progression

Progression will be evaluated in this study using the new international criteria proposed by the RECIST Committee. Time to progression will be estimated using the Kaplan-Meier method.

Time frame: Time from the treatment start to the date of disease progression

ArmMeasureValue (MEAN)
Treatment (Enzyme Inhibitor Therapy)Time to Progression12 weeks

Source: ClinicalTrials.gov · Data processed: Mar 29, 2026