ASCL1 and small cell lung carcinoma: Moreover, in vivo and in vivo SCLC models have also shown direct associations between the abundance of distinct Myc family members and molecular SCLC subtypes (e.g., ASCL1/SCLC-A and MYCL/L-Myc or NEUROD1/SCLC-N and MYC/C-Myc) [4].