TET2 p.Ala304Val has only been previously identified in melanoma [27], while TET2 p.Phe868Leu has been previously identified in estrogen- and progesterone-receptor positive breast cancer [28], adult T cell lymphoma/leukaemia [29], and MDS [30, 31]. The gene discussed is PGR; the disease is adult T-cell leukemia/lymphoma.