Frequency of recent retrotransposition events in the human factor IX gene.Xin Li, William A Scaringe, +6 authors S. S. SommerHuman mutation2001Two germline retrotransposition mutations of recent origin were observed in 727 independent mutations (0.28%) in the human factor IX gene (F9) of patients with hemophilia B: 1) a 279 bp insertion in… (More)