Delta-like protein 3 (DLL3) is a potential therapeutic target molecule for SCLC [103], but rovalpituzumab tesirine, which is the first antibody drug conjugate (ADC) targeting DLL3, was terminated on August 2019 because of failure of both the TAHOE (NCT03061812) and MERU (NCT03033511) clinical trials. The gene discussed is DLL3; the disease is small cell lung carcinoma.