Lesions of the Nf1 gene (exons 23 and/or 56) were more frequently found in Dmd −/− (34%) and Dmd −/− Dysf −/− sarcomas (31%) as opposed to Dysf −/− (14%) or Dmd −/− Capn3 −/− (18%). Here, NF1 is linked to sarcoma.