3 years ago

Association between type 2 diabetes, curative treatment and survival in men with intermediate- and high-risk localized prostate cancer

Mieke Van Hemelrijck, Lars Holmberg, Danielle Crawley, Björn Zethelius, Jan Adolfsson, Pär Stattin, Hans Garmo, Sarah Rudman
Objective To investigate whether curative prostate cancer (PCa) treatment was received less often by men with both PCa and Type 2 diabetes mellitus (T2DM) as little is known about the influence of T2DM diagnosis on the receipt of such treatment in men with localized PCa. Subjects and Methods The Prostate Cancer database Sweden (PCBaSe) was used to obtain data on men with T2DM and PCa (n = 2210) for comparison with data on men with PCa only (n = 23 071). All men had intermediate- (T1–2, Gleason score 7 and/or prostate-specific antigen [PSA] 10–20 ng/mL) or high-risk (T3 and/or Gleason score 8–10 and/or PSA 20–50 ng/mL) localized PCa diagnosed between 1 January 2006 and 31 December 2014. Multivariate logistic regression was used to calculate the odds ratios (ORs) for receipt of curative treatment in men with and without T2DM. Overall survival, for up to 8 years of follow-up, was calculated both for men with T2DM only and for men with T2DM and PCa. Results Men with T2DM were less likely to receive curative treatment for PCa than men without T2DM (OR 0.78, 95% confidence interval 0.69–0.87). The 8-year overall survival rates were 79% and 33% for men with T2DM and high-risk PCa who did and did not receive curative treatment, respectively. Conclusions Men with T2DM were less likely to receive curative treatment for localized intermediate- and high-risk PCa. Men with T2DM and high-risk PCa who received curative treatment had substantially higher survival times than those who did not. Some of the survival differences represent a selection bias, whereby the healthiest patients received curative treatment. Clinicians should interpret this data carefully and ensure that individual patients with T2DM and PCa are not under- nor overtreated.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1111/bju.13880

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