IGF1R and small cell lung carcinoma: IGF1R mRNA levels were significantly higher (p = 0.01) in SCLC (RQ 11.19 (7.60–12.38)) than in other entities (RQ 2.92 (2.07–6.49); 9.97 (4.98–17.03); 6.16 (4.49–9.84) for LCNEC, AC and TC, respectively) (Figure 3A).