As shown in Table 1, there was a positive association of amplification of ERBB4 (OR = 2.62, 95% CI = 1.23–5.59, P < 0.05) and CD44 (OR = 2.28, 95% CI = 1.08–4.79, P < 0.05) with tumor differentiation. This evidence concerns the gene ERBB4 and neoplasm.