Similar findings have also been reported for uterine leiomyomas with rearrangements involving chromosome band 12q15 (20): A study of 38 uterine leiomyomas showed that dysregulation of HMGA2 expression, not the formation of HMGA2 fusion transcripts, was the principal pathobiological mechanism in these tumors. The gene discussed is HMGA2; the disease is uterine corpus leiomyoma.