Volume 2014, Issue 1 230812
Research Article
Open Access

Obesity and the Odds of Weight Gain following Androgen Deprivation Therapy for Prostate Cancer

Lior Z. Braunstein

Corresponding Author

Lior Z. Braunstein

Harvard Radiation Oncology Program, Brigham and Women’s Hospital, ASB-I Radiation Oncology L2, 75 Francis Street, Boston, MA 02115, USA

Search for more papers by this author
Ming-Hui Chen

Ming-Hui Chen

Department of Statistics, University of Connecticut, 215 Glenbrook Road, U-4120 , Storrs, CT 06269-4120, USA uconn.edu

Search for more papers by this author
Marian Loffredo

Marian Loffredo

Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Mailstop Dana 1230, 450 Brookline Avenue, Boston, MA 02215, USA dana-farber.org

Department of Radiation Oncology, Dana-Farber/Brigham and Women’s Hospital, ASB-I Radiation Oncology L2, 75 Francis Street, Boston, MA 02115, USA

Search for more papers by this author
Philip W. Kantoff

Philip W. Kantoff

Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Mailstop Dana 1230, 450 Brookline Avenue, Boston, MA 02215, USA dana-farber.org

Search for more papers by this author
Anthony V. D′Amico

Anthony V. D′Amico

Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Mailstop Dana 1230, 450 Brookline Avenue, Boston, MA 02215, USA dana-farber.org

Department of Radiation Oncology, Dana-Farber/Brigham and Women’s Hospital, ASB-I Radiation Oncology L2, 75 Francis Street, Boston, MA 02115, USA

Search for more papers by this author
First published: 22 April 2014
Citations: 12
Academic Editor: Manfred Wirth

Abstract

Background. Increasing body mass index (BMI) is associated with increased risk of mortality; however, quantifying weight gain in men undergoing androgen deprivation therapy (ADT) for prostate cancer (PC) remains unexplored. Methods. Between 1995 and 2001, 206 men were enrolled in a randomized trial evaluating the survival difference of adding 6 months of ADT to radiation therapy (RT). BMI measurements were available in 171 men comprising the study cohort. The primary endpoint was weight gain of ≥10 lbs by 6-month followup. Logistic regression analysis was performed to assess whether baseline BMI or treatment received was associated with this endpoint adjusting for known prognostic factors. Results. By the 6-month followup, 12 men gained ≥10 lbs, of which 10 (83%) received RT + ADT and, of these, 7 (70%) were obese at randomization. Men treated with RT as compared to RT + ADT were less likely to gain ≥10 lbs (adjusted odds ratio (AOR): 0.18 [95% CI: 0.04–0.89]; P = 0.04), whereas this risk increased with increasing BMI (AOR: 1.15 [95% CI: 1.01–1.31]; P = 0.04). Conclusions. Consideration should be given to avoid ADT in obese men with low- or favorable-intermediate risk PC where improved cancer control has not been observed, but shortened life expectancy from weight gain is expected.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.