PAX3 and neoplasm: Based on their genotypes, we identified n = 23 tumours corresponding to the ML cluster (Pax3::Foxo1 in Myf5, Myf6, or Pax3 lineage) and n = 33 tumours corresponding to the MR cluster (other mutations in any lineage or Pax3::Foxo1 in Pax7 lineage) [16, 17].