GRP and small cell lung carcinoma: Notably, unlike other TM (Supplementary Fig. 3), the proportion positive was highest for ProGRP in the earliest stage (53%, Table 3, Supplementary Fig. 3D) and the association of TM levels with stage was not seen (Fig. 1); this was not due the association with SCLC, as most SCLC tested were late stage (Table 1).