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Ref Type | Journal Article | ||||||||||||
PMID | (20372153) | ||||||||||||
Authors | Handolias D, Hamilton AL, Salemi R, Tan A, Moodie K, Kerr L, Dobrovic A, McArthur GA | ||||||||||||
Title | Clinical responses observed with imatinib or sorafenib in melanoma patients expressing mutations in KIT. | ||||||||||||
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Abstract Text | Mutations in KIT are more frequent in specific melanoma subtypes, and response to KIT inhibition is likely to depend on the identified mutation.A total of 32 patients with metastatic acral or mucosal melanoma were screened for mutations in KIT exons 11, 13 and 17.KIT mutations were found in 38% of mucosal and in 6% of acral melanomas. Three patients were treated with imatinib and one with sorafenib. All four patients responded to treatment, but three have since progressed within the brain.The observed clinical responses support further investigation of KIT inhibitors in metastatic melanoma, selected according to KIT mutation status. |
Molecular Profile | Treatment Approach |
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Gene Name | Source | Synonyms | Protein Domains | Gene Description | Gene Role |
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Therapy Name | Drugs | Efficacy Evidence | Clinical Trials |
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Gene | Variant | Impact | Protein Effect | Variant Description | Associated with drug Resistance |
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Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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KIT D820Y | melanoma | predicted - sensitive | Sorafenib | Case Reports/Case Series | Actionable | In a clinical case study, Nexavar (sorafenib) treatment resulted in stable disease with 27% reduction in target lesions at 4 weeks in a patient with anal melanoma and pulmonary metastases harboring KIT D820Y (PMID: 20372153). | 20372153 |
KIT K642E | vulvar melanoma | predicted - sensitive | Imatinib | Case Reports/Case Series | Actionable | In a clinical case study, Gleevec (imatinib) treatment resulted in partial response in a patient with recurrent vulval melanoma harboring KIT K642E, with reduction of tumor mass by 35% at 12 weeks (PMID: 20372153). | 20372153 |
KIT L576P | melanoma | unknown | Imatinib | Case Reports/Case Series | Actionable | In a clinical case study, Gleevec (imatinib) treatment resulted in initial tumor reduction, but was followed by disease progression at all tumor sites in a patient with metastasized labial melanoma harboring KIT L576P (PMID: 20372153). | 20372153 |
KIT exon11 | melanoma | predicted - sensitive | Imatinib | Case Reports/Case Series | Actionable | In a clinical case study, Gleevec (imatinib) treatment resulted in a partial response in a patient with metastastic anal melanoma harboring a 21 base-pair duplication in KIT exon 11, and reduced pulmonary metastasis by 60% (PMID: 20372153). | 20372153 |