کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2774988 | 1152303 | 2016 | 5 صفحه PDF | دانلود رایگان |
Aberrant promoter hypermethylations of tumor suppressor genes are promising markers for lung cancer diagnosis and prognosis. The purpose of this study was to determine methylation status at APC and RAR-β promoters in primary NSCLC, and whether they have any relationship with survival. APC and RAR-β promoter methylation status were determined in 41 NSCLC patients using methylation specific PCR. APC promoter methylation was detectable in 9 (22.0%) tumor samples and 6 (14.6%) corresponding non-tumor samples (P = 0.391). RAR-β promoter methylation was detectable in 13 (31.7%) tumor samples and 4 (9.8%) corresponding non-tumor samples (P = 0.049) in the NSCLC patients. APC promoter methylation was found to be associated with T stage (P = 0.046) and nodal status (P = 0.019) in non-tumor samples, and with smoking (P = 0.004) in tumor samples. RAR-β promoter methylation was found associated with age (P = 0.031) in non-tumor samples and with primary tumor site in tumor samples. Patients with APC promoter methylation in tumor samples showed significantly longer survival than patients without it (Log-rank P = 0.014). In a multivariate analysis of prognostic factors, APC methylation in tumor samples was an independent prognostic factor (P = 0.012), as were N1 positive lymph node number (P = 0.025) and N2 positive lymph node number (P = 0.06). Our study shows that RAR-β methylation detected in lung tissue may be used as a predictive marker for NSCLC diagnosis and that APC methylation in tumor sample may be a useful marker for superior survival in NSCLC patients.
Journal: Experimental and Molecular Pathology - Volume 100, Issue 1, February 2016, Pages 109–113