More recently, SF3B1 mutations have been identified at relatively high frequency in some solid tumors, such as various pigmented tumors, including uveal melanoma (UM) [61, 62], mucosal melanoma [63], leptomeningeal melanoma [64] and blue nevus-like cutaneous melanoma [65], and neuroblastomas that arise following chromothripsis [66], estrogen receptor-positive breast cancers (BC) [67], pancreatic ductal adenocarcinoma [68], prostate cancer [69], prolactinomas [70], acute myeloid leukemia [71, 72], and many others [73–75]. The gene discussed is SF3B1; the disease is breast cancer.