Here, via multiomics analyses of 314 SCLCs, we found that the ASCL1+/MKI67+ and ASCL1+/CRIP2+ clusters accounted for 74.38% of the 190,313 SCLC cancer cells from 39 patients, with the ASCL1+SOX1+ stem-like cell cluster across SCLC subtypes. The gene discussed is ASCL1; the disease is small cell lung carcinoma.