Studying Genes in Samples From Younger Patients With Desmoplastic Small Round Cell Tumor Registered on COG-D9902 or COG-ABTR01B1 [clinicaltrials:NCT01430637]

Studying Genes in Samples From Younger Patients With Desmoplastic Small Round Cell Tumor Registered on COG-D9902 or COG-ABTR01B1 [clinicaltrials:NCT01430637]