Similarly, UUS reclassified as SMARCA4-deficient uterine sarcoma (CLB_RNA_426), also called “malignant rhabdoid tumor of the uterus”, is a candidate to anti-PD1 in a clinical trial given the high response rates to immunotherapy in this entity (ClinicalTrials.gov Identifier: NCT03012620). Here, SMARCA4 is linked to uterine corpus sarcoma.