Relationship between miR-4429 and EGFR mutation in NSCLC patients. (A) Serum miR-4429 expression in patients with EGFR-M and patients with EGFR-W. (B) Serum miR4429 expression in patients with different types of EGFR mutations. (C) ROC analysis indicated the ability of serum miR-4429 to discriminate between EGFR-M patients and EGFRW patients. **p < 0.01 vs. EGFR-W; EGFR, Epidermal growth factor receptor; EGFRM, EGFR mutant-type; EGFR-W, EGFR wild-type; AUC, Area under the ROC curve; ROC, Receiver operating characteristic; NSCLC, Non-small cell lung cancer.