PSMB7 and ovarian serous adenocarcinoma: Another prevalent fusion PSMB7::SCAI (52 tumor cells) detected mostly by long reads and with four fusion splicing isoforms involves suppressor of cancer cell invasion gene SCAI. The reciprocal fusion SCAI::PSMB7 was previously detected in serous ovarian cancer cell line COV504_OVARY of the Cancer Cell Line Encyclopedia (Barretina et al. 2012), further implicating this rearrangement as of particular interest to this cancer type.