TMEM244 and synovial sarcoma: In MF, that belong to the same group of CTCL lymphomas as SS, the expression of TMEM244 was detected in blood samples of two patients (mean ± SD MF1‐2PB = 275E‐6 ± 108E‐6), but much lower trace expression was measured in either bone marrow (mean ± SD MF2‐3BM = 52E‐6 ± 4E‐6) or skin biopsy (MF2SB = 8E‐6).