• Global DNA methylation is altered by neoadjuvant chemoradiotherapy in rectal cancer and may predict response to treatment - A pilot study.

      Tsang, J S; Vencken, S; Sharaf, O; Leen, E; Kay, E W; McNamara, D A; Deasy, J; Mulligan, E D; Department of Surgical Research, Connolly Hospital & RCSI, Blanchardstown, Dublin, Ireland. Electronic address: julianst@yahoo.com. (2014-07-28)
      In rectal cancer, not all tumours display a response to neoadjuvant treatment. An accurate predictor of response does not exist to guide patient-specific treatment. DNA methylation is a distinctive molecular pathway in colorectal carcinogenesis. Whether DNA methylation is altered by neoadjuvant treatment and a potential response predictor is unknown. We aimed to determine whether DNA methylation is altered by neoadjuvant chemoradiotherapy (CRT) and to determine its role in predicting response to treatment.