The results were fully consistent with those obtained with the G-test; the exact p-values for LCNEC vs. SCLC were 3.40 × 10-4 for AL1A1, 5.53 × 10-10 for AK1C1, 2.27 × 10-10 for AK1C3, and 0.012 for CD44. The gene discussed is CD44; the disease is small cell lung carcinoma.