Preoperative weight change and risk of adverse outcome following radical prostatectomy: results from the Shared Equal Access Regional Cancer Hospital database.

Published

Journal Article

BACKGROUND: We examined the relationship between weight change in the year before radical prostatectomy (RP) and biochemical recurrence (BCR) and adverse pathology. METHODS: We abstracted data from 359 men undergoing RP in the SEARCH (Shared Equal Access Regional Cancer Hospital) database between 2001-2007. Logistic regression and Cox proportional hazards models were used to test the association between weight change in the year before surgery and adverse pathology and BCR, respectively. RESULTS: In all, 152 (42%) men gained weight, 193 (54%) lost weight and 14 (4%) had the same weight. Among weight gainers, median gain was 2.4 kg and among weight losers, median loss was 2.7 kg. As a continuous variable, weight change was not associated with adverse pathology or BCR (all P>0.05). In secondary analysis, on multivariate analysis, men gaining ≥ 2.5 kg were at higher BCR risk (hazards ratio=1.65, 95% confidence interval (CI): 1.03-2.64, P=0.04) while weight loss ≥ 2.5 kg was not associated with BCR (hazards ratio=0.83, 95% CI: 0.54-1.29, P=0.41). CONCLUSIONS: As a continuous variable, weight change was not associated with outcome. In secondary hypothesis-generating analyses, weight gain ≥ 2.5 kg in the year before surgery, regardless of final body mass index, was associated with increased BCR following RP. If validated, these data suggest weight gain ≥ 2.5 kg may promote prostate cancer progression.

Full Text

Duke Authors

Cited Authors

  • Whitley, BM; Moreira, DM; Thomas, J-A; Aronson, WJ; Terris, MK; Presti, JC; Kane, CJ; Amling, CL; Freedland, SJ; SEARCH Database Study Group,

Published Date

  • December 2011

Published In

Volume / Issue

  • 14 / 4

Start / End Page

  • 361 - 366

PubMed ID

  • 21894174

Pubmed Central ID

  • 21894174

Electronic International Standard Serial Number (EISSN)

  • 1476-5608

International Standard Serial Number (ISSN)

  • 1365-7852

Digital Object Identifier (DOI)

  • 10.1038/pcan.2011.42

Language

  • eng