OBJECTIVETo investigate the value of p15, DAPK, SOCS1 and FHIT genes combined detection in the early diagnosis and prognosis evaluation of patients with myelodysplastic syndrome(MDS).

METHODSThe methylation-specific PCR (MSP) was used to detect the methylation of the above-mentioned 4 genes in 67 patients with MDS. The value of 4 gene combined detection in the early diagnosis and prognosis evaluation of patients with MDS was compared and anazlyzed.

RESULTSThe methylation rates of p15, DAPK, SOCS1 and FHIT genes in 67 patients with MDS were 37.3%, 35.8%, 47.8% and 52.2%, respectively, which were significantly higher than those in control group (P<0.05). The accordance rates of p15, DAPK, SOCS1 and FHIT single detection for diagnosis of MDS were 37.3%,35.8%,47.8% and 52.2%, respectively, meanswhile the accordance rate of above-mentioned 4 gene combined detection for diagnosis of MDS was 82.1%, which was significantly higher than that of single gene detection(P<0.001). The methylation of ≥2 genes in relatively high risk group was significantly higher than that in relatively low risk group (P<0.05). The median survival time of MDS patients was 18(13.3, 22.7) months; the median survival time in relatively low risk group was significantly longer than that in relatively high risk group [27(20.3,33.7) months vs 9(5.9,12.1) months] (P<0.05). The survival time of MDS patients with different risks displayed the trend of shorting feature along with increasing of methylated genes (P<0.05).

CONCLUSIONThe combined detection of above menthioned 4 genes can improve the accuracy of early diagnosis and prognosis evaluation for MDS patients.