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. 2017 Mar 3;6(4):730–738. doi: 10.1002/cam4.1005

Figure 2.

Figure 2

SMAD4 expression status affects the malignant transformation rate of oral leukoplakia. In the Kaplan–Meier survival analysis of patients with oral leukoplakia ( OL), patients were divided into two groups based on the SMAD4 immunostaining scores (‐low or ‐high expression groups) or the lymphocyte infiltration status (lymphocyte infiltration‐low or ‐high groups). (A) Event‐free survival (EFS) of the 150 OL patients based on the status of SMAD4 expression. *, P < 0.05. (B) EFS of the 150 OL patients based on the status of lymphocyte infiltration. NS, no significance.