LRG1 and small cell lung carcinoma: LRG1 levels in the plasma of SqCC patients (127 ± 11 mg/L mean ± SD N = 11) was significantly different to AC (78 ± 18 mg/L, mean ± SD N = 6 p < 0.047) and SCLC (62 ± 8 mg/L mean ± SD N = 6, p < 0.0003) prior to therapy.