As shown in Table 2 and Supplementary Materials Figure S1, humoral response against NOL4 protein was detected in 75% (33/44) of SCLC patients, and, more specifically, 77% (24/31) of extensive-disease-SCLC patients and 69% (9/13) of limited-disease-SCLC patients, respectively. Here, NOL4 is linked to small cell lung carcinoma.