CD44 and neoplasm: Moreover, a high level of CD44 showed a possible correlation with poor differentiation (OR<sub>Total CD44 isoforms</sub> = 1.44, 95% CI = 1.00-2.08, <i>P</i> = 0.051), elevated level of CD44v6 tend to be correlated with tumor size (OR = 1.71, 95% CI = 0.99-2.96, <i>P</i> = 0.056).