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Body mass index as a prognostic marker for biochemical recurrence in Dutch men treated with radical prostatectomy
Author(s) -
Van Roermund Joep G.H.,
Kok Dieuwertje E.G.,
Wildhagen Mark F.,
Kiemeney Lambertus A.,
Struik Femke,
Sloot Sarah,
Van Oort Inge M.,
Hulsbergenvan de Kaa Christina A.,
Van Leenders Geert J.L.H.,
Bangma Chris H.,
Witjes J. Alfred
Publication year - 2009
Publication title -
bju international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.773
H-Index - 148
eISSN - 1464-410X
pISSN - 1464-4096
DOI - 10.1111/j.1464-410x.2009.08404.x
Subject(s) - biochemical recurrence , medicine , prostatectomy , prostate cancer , body mass index , overweight , hazard ratio , confidence interval , obesity , urology , breakpoint cluster region , risk factor , prostate specific antigen , proportional hazards model , cancer , oncology , gynecology , receptor
OBJECTIVE To investigate whether body mass index (BMI) is a prognostic factor for biochemical recurrence (BCR) in Dutch men after radical prostatectomy (RP), as although epidemiological studies of obesity in relation to prostate cancer have provided conflicting results, recent studies from the USA suggest that a higher BMI is a risk factor for progression of prostate cancer. PATIENTS AND METHODS Of the 1417 patients with prostate cancer who had RP at two University hospitals, 1302 were included in the present study. BMI (kg/m 2 ) classes were defined as normal (<25), overweight (25–30) and obese (≥30). The median follow‐up was 59 months and clinical data were obtained retrospectively from charts. BCR was defined as two consecutive prostate‐specific antigen (PSA) levels of >0.1 ng/mL. RESULTS In all, 600 patients were classified as having normal weight (43.9%), 665 as overweight (48.6%) and 103 as obese (7.5%). Overall, 297 patients developed BCR after RP; the 10‐year risk (95% confidence interval) of BCR was 31.9 (26.6–37.2)%, 30.5 (25.8–35.2)% and 23.9 (14.9–32.9)% for patients in the three categories, respectively ( P = 0.836). Multivariable proportional hazard regression analyses of BMI and established prognostic factors for BCR did not change these results. CONCLUSION BMI appeared to have no prognostic value for BCR in Dutch patients with clinically localized prostate cancer and treated with RP.