Microphthalmia transcription factor: a specific marker for malignant melanoma.
نویسندگان
چکیده
The transcription factor microphthalmia (MITF) is required for the formation of normal melanocytes during embryonic development and for the expression of pigment cell-specific markers, which are the downstream transcriptional targets of MITF. It also seems to be crucial for the survival of malignant melanocytes. The special interest of this review is the possible utility of MITF as a marker of malignant melanoma. Melanocyte-specific isoform of MITF appears to be a unique molecule in the differential diagnosis of melanocytic tumors.
منابع مشابه
Diagnostic dilemma: HMB-45 and Melan-A negative tumor, can it be still a melanoma?: MITF (Microphthalmia-associated transcription factor) stain may confirm the diagnosis
We report a case of dermal malignant melanoma that stained negatively for commonly done immunostains, HMB-45, and Melan-A. It stained weakly positive for S-100 protein, a less specific marker for melanocytes. The diagnosis was established by strongly positive immunostaining by MITF ( microphthlmia-associated transcription factor). A brief review of the MITF and its usefulness in the diagnosis o...
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متن کاملMicrophthalmia-associated transcription factor gene amplification in metastatic melanoma is a prognostic marker for patient survival, but not a predictive marker for chemosensitivity and chemotherapy response.
PURPOSE The microphthalmia-associated transcription factor (MITF) is regarded as a key oncogene of the melanocytic lineage since it was detected by a genome-wide analysis to be strongly amplified in 15% to 20% of metastatic melanomas. MITF gene amplification was shown to be associated with a reduced survival in metastatic melanoma patients, and reduction of MITF activity was shown to sensitize ...
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ورودعنوان ژورنال:
- Prague medical report
دوره 105 3 شماره
صفحات -
تاریخ انتشار 2004