The translocation t(2;13)(q35;q14) leading to the PAX3-FOXO1 (P3F) gene fusion was found to be present in 55% of ARMS cases, while the translocation t(1;13)(q36;q14) leading to the PAX7-FOXO1 gene fusion was present in 22% of cases, and 23% of ARMS were fusion-negative (2). This evidence concerns the gene PAX3 and alveolar rhabdomyosarcoma.