In 2015, RNA-sequencing performed on a t(10;17)(q22;q21) retroperitoneal uterine-type leiomyoma with prominent fibrous matrix demonstrated a KAT6B::KANSL1 gene fusion, which results in a putative in-frame chimeric protein encoded by exons 1 to 3 of KAT6B and exons 11 to 15 of KANSL1 [2]. Here, KANSL1 is linked to leiomyoma.