Adenomatous polyposis coli gene promoter hypermethylation in non-small cell lung cancer is associated with survival

Jan Brabender, Henning Usadel, Kathleen D. Danenberg, Ralf Metzger, Paul M. Schneider, Reginald V. Lord, Kumari Wickramasinghe, Christopher E. Lum, Ji Min Park, Dennis Salonga, Jonathan Singer, David Sidransky, Arnulf H. Hölscher, Stephen J. Meltzer, Peter V. Danenberg

Research output: Contribution to journalArticlepeer-review

126 Scopus citations


Methylation of 5′ CpG islands in promoter and upstream coding regions has been identified as a mechanism for transcriptional inactivation of tumor suppressor genes. The purpose of this study was to determine whether hypermethylation of the adenomatous polyposis coli (APC) gene promoter occurs in primary non-small cell lung cancer (NSCLC), and whether hypermethylated APC has any relationship with survival. APC promoter 1A methylation was determined in normal and corresponding tumor tissue from 91 NSCLC patients and in a control group of 10 patients without cancer, using a quantitative fluorogenic real-time PCR (Taqman®) system. APC promoter methylation was detectable in 86 (95%) of 91 tumor samples, but also in 80 (88%) of 91 normal samples of NSCLC patients, and in only two (20%) of 10 normal lung tissues of the control group. The median level of APC promoter methylation was 4.75 in tumor compared to 1.57 in normal lung tissue (P<0.001). Patients with low methylation status showed significantly longer survival than did patients with high methylation status (P = 0.041). In a multivariate analysis of prognostic factors, APC methylation was a significant independent prognostic factor (P=0.044), as were pT (P=0.050) and pN (P<0.001) classifications. This investigation shows that APC gene promoter methylation occurs in the majority of primary NSCLCs. High APC promoter methylation is significantly associated with inferior survival, showing promise as a biomarker of biologically aggressive disease in NSCLC.

Original languageEnglish (US)
Pages (from-to)3528-3532
Number of pages5
Issue number27
StatePublished - Jun 14 2001


  • APC
  • Methylation
  • Neoplasia

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Cancer Research


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