Skip Navigation LinksHome > February 2014 - Volume 24 - Issue 2 > High Methylation Rate of LMX1A, NKX6-1, PAX1, PTPRR, SOX1, a...
International Journal of Gynecological Cancer:
doi: 10.1097/IGC.0000000000000054
Basic Science

High Methylation Rate of LMX1A, NKX6-1, PAX1, PTPRR, SOX1, and ZNF582 Genes in Cervical Adenocarcinoma

Chang, Cheng-Chang MD*†‡; Huang, Rui-Lan PhD†§; Wang, Hui-Chen BS; Liao, Yu-Ping MS; Yu, Mu-Hsien MD, PhD*; Lai, Hung-Cheng MD, PhD*†‡§

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Abstract

Objective

This study aimed to investigate the status of DNA methylation of 6 genes, LMX1A, NKX6-1, PAX1, PTPRR, SOX1, and ZNF582, previously found from squamous cell carcinomas in adenocarcinomas (ACs) of the uterine cervix.

Methods

We assessed the methylation status of these genes in 40 ACs, cervical scrapings from 23 ACs, and 67 normal control cervices by real-time quantitative methylation-specific polymerase chain reaction. The results were validated by bisulfite pyrosequencing.

Results

The methylation levels of all the 6 genes in the ACs were significantly higher than those in normal cervical tissues, especially for PAX1, PTPRR, SOX1, and ZNF582. The odds ratios and 95% confidence intervals (CIs) of high methylation levels in PAX1, PTPRR, SOX1, and ZNF582 for the risk of developing an AC were 15.7 (95% CI, 7.0–40.6), 16.9 (95% CI, 7.6–43.0), 32.1 (95% CI, 12.1–124.3), and 25.4 (95% CI, 10.4–78.3), respectively (all P < 0.001). The methylation indices of PAX1, PTPRR, SOX1, and ZNF582 recovered from scrapings of ACs were significantly higher than in normal controls. The odds ratios of these indices for the risk of developing an AC in PAX1, PTPRR, SOX1, and ZNF582 were 6.2 (95% CI, 2.6–15.4), 12.1(95% CI, 3.8–46.4), 6.2 (95% CI, 2.6–15.8), and 20.6 (95% CI, 6.9–77.5), respectively (all P < 0.001).

Conclusions

Cervical ACs carry aberrantly high methylation rates of PAX1, PTPRR, SOX1, and ZNF582—commonly methylated in squamous cell carcinomas—which might help for AC screening.

Copyright © 2014 by IGCS and ESGO

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