Global collaboRAtion on CIC-DUX4, BCOR-CCN3, High-grade Undifferentiated Round Cell Sarcoma (URCS) Project

Global collaboRAtion on CIC-DUX4, BCOR-CCN3, High-grade Undifferentiated Round Cell Sarcoma (URCS) Project

Experimental study with biological material : case series review of clinical and histological data

This is a multicenter retrospective and prospective study that will analyze all cases with a diagnosis of Undifferentiated round cell sarcomas from 01 January 1983 and all new cases referring to each participant site.

Inclusion Criteria:

• Patients with undifferentiated round cell sarcomas treated from 01 January 1983 and all new patients will be included.
• Clinical and outcome information available.
• Histological slides/formalin-fixed paraffin-embedded tissue tumor blocks from archive available to perform the histology analysis/frozen tissue representative of the tumor available.

Exclusion Criteria:

• Diagnosis different from undifferentiated round cell sarcomas
• Patient with no clinical or outcome information available