Post-diagnosis weight gain and breast cancer recurrence in women with early stage breast cancer

Bette J. Caan, Jennifer A. Emond, Loki Natarajan, Adrienne Castillo, Erica P. Gunderson, Laurel Habel, Lovell Jones, Vicky A. Newman, Cheryl L. Rock, Martha L. Slattery, Marcia L. Stefanick, Barbara Sternfeld, Cynthia A. Thomson, John P. Pierce

Research output: Contribution to journalArticle

100 Scopus citations

Abstract

Purpose. To examine whether weight gain after diagnosis of breast cancer affects the risk of breast cancer recurrence. Patient and methods. Patients included 3215 women diagnosed with early stage breast cancer (Stage I > 1 cm., II, and IIIA) who were enrolled either in an observational cohort of breast cancer survivors or were part of the comparison group of a dietary intervention trial to prevent breast cancer recurrence. We computed weight change from 1 year prior to diagnosis to study enrollment. Delayed entry Cox proportional hazards models were used to evaluate associations of categories of weight change with time to recurrence, controlling for known prognostic factors. Results. Neither moderate (5-10%) nor large (>10%) weight gain (HR 0.8, 95% CI, 0.6-1.1; HR 0.9, 95% CI, 0.7-1.2, respectively) after breast cancer diagnosis was associated with an increased risk of breast cancer recurrence in the early years post-diagnosis (median time of 73.7 months from diagnosis). Conclusion. Our research provides evidence that weight gain commonly seen in the first several years following a breast cancer diagnosis does not increase a woman's risk for breast cancer recurrence in the first 5-7 years post-diagnosis. However, this research does not address the effects of weight gain on overall survival or on the risk of other new cancers, other prognostic outcomes of concern to the breast cancer survivor.

Original languageEnglish (US)
Pages (from-to)47-57
Number of pages11
JournalBreast Cancer Research and Treatment
Volume99
Issue number1
DOIs
StatePublished - Sep 1 2006

Keywords

  • BMI
  • Breast cancer
  • Prognosis
  • Recurrence
  • Weight gain

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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    Caan, B. J., Emond, J. A., Natarajan, L., Castillo, A., Gunderson, E. P., Habel, L., Jones, L., Newman, V. A., Rock, C. L., Slattery, M. L., Stefanick, M. L., Sternfeld, B., Thomson, C. A., & Pierce, J. P. (2006). Post-diagnosis weight gain and breast cancer recurrence in women with early stage breast cancer. Breast Cancer Research and Treatment, 99(1), 47-57. https://doi.org/10.1007/s10549-006-9179-y