All three of the SMARCA4-deficient SCLC-Y xenograft tumors (SW1271, H841, and DMS114) were favoured by pathologists to represent either SMARCA4-UT or SMARCA4-deficient NSCLC, rather than SCLC (Fig. 2C; ref. 15). This evidence concerns the gene SMARCA4 and small cell lung carcinoma.