We also note the unexpected finding that UAS (n = 14), a rare sarcoma subtype, had oncogenic alterations in genes encoding subunits of the SWI/SNF chromatin remodeling complex in 43% of patients, with ARID1A and PBRM1 most frequently affected (Fig. 4D, Supplementary Fig. 2). The gene discussed is SMARCA1; the disease is sarcoma.