MITF and alveolar soft part sarcoma: Xp11.2 tRCC was classified as “the microphthalmia transcription factor/transcription factor E (MiTF/TFE) family translocation carcinoma” by Argani and Ladanyi.13 Other MiTF/TFE family translocation carcinoma members include alveolar soft part sarcoma (ASPS) and perivascular epithelioid cell tumors (PEComas).