ADGRF4 and non-small cell lung carcinoma: Correlation analysis (Pearson’s χ2) indicated that high GPR115 expression was significantly (P ≤ 0.05) associated with tumor type, differentiation, tumor size, lymph node metastasis, and tumor-node-metastasis (TNM) stage in NSCLC patients (χ2 = 6.475, 18.473, 7.664, 17.269 and 13.816, respectively; all P < 0.05, Table 1).