In both SJRHB015721_X1 and SJRHB012405_X1 PDXs, PAX7 knockdown with shPAX7 resulted in decreased tumor volume (Fig. 6j and Supplementary Fig. 7j); however, tumor mass only decreased in SJRHB015721_X1 (Fig. 6k and Supplementary Fig. 7k). Here, PAX7 is linked to neoplasm.