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Mandelblatt JS, Clapp JD, Luta G, et al. Long-term trajectories of self-reported cognitive function in a cohort of older survivors of breast cancer: CALGB 369901 (Alliance). Cancer. 2016;122(22):3555-3563doi: 10.1002/cncr.30208.
Mandelblatt, J. S., Clapp, J. D., Luta, G., Faul, L. A., Tallarico, M. D., McClendon, T. D., Whitley, J. A., Cai, L., Ahles, T. A., Stern, R. A., Jacobsen, P. B., Small, B. J., Pitcher, B. N., Dura-Fernandis, E., Muss, H. B., Hurria, A., Cohen, H. J., & Isaacs, C. (2016). Long-term trajectories of self-reported cognitive function in a cohort of older survivors of breast cancer: CALGB 369901 (Alliance). Cancer, 122(22), 3555-3563. https://doi.org/10.1002/cncr.30208
Mandelblatt, Jeanne S, et al. "Long-term trajectories of self-reported cognitive function in a cohort of older survivors of breast cancer: CALGB 369901 (Alliance)." Cancer vol. 122,22 (2016): 3555-3563. doi: https://doi.org/10.1002/cncr.30208
Mandelblatt JS, Clapp JD, Luta G, Faul LA, Tallarico MD, McClendon TD, Whitley JA, Cai L, Ahles TA, Stern RA, Jacobsen PB, Small BJ, Pitcher BN, Dura-Fernandis E, Muss HB, Hurria A, Cohen HJ, Isaacs C. Long-term trajectories of self-reported cognitive function in a cohort of older survivors of breast cancer: CALGB 369901 (Alliance). Cancer. 2016 Nov 15;122(22):3555-3563. doi: 10.1002/cncr.30208. Epub 2016 Jul 22. PMID: 27447359; PMCID: PMC5113662.
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Cancer. 2016 Nov 15;122(22):3555-3563. doi: 10.1002/cncr.30208. Epub 2016 Jul 22.

Long-term trajectories of self-reported cognitive function in a cohort of older survivors of breast cancer: CALGB 369901 (Alliance).

Cancer

Jeanne S Mandelblatt, Jonathan D Clapp, Gheorghe Luta, Leigh Anne Faul, Michelle D Tallarico, Trina D McClendon, Jessica A Whitley, Ling Cai, Tim A Ahles, Robert A Stern, Paul B Jacobsen, Brent J Small, Brandelyn N Pitcher, Estrella Dura-Fernandis, Hyman B Muss, Arti Hurria, Harvey J Cohen, Claudine Isaacs

Affiliations

  1. Department of Oncology, Georgetown University School of Medicine, Washington, DC.
  2. Cancer Control Program, Lombardi Comprehensive Cancer Center, Washington, DC.
  3. Department of Biostatistics, Bioinformatics and Biomathematics, Georgetown University Medical Center, Washington, DC.
  4. Department of Psychiatry and Behavioral Sciences, Memorial Sloan Kettering Cancer Center, New York, New York.
  5. Department of Neurology, Neurosurgery, and Anatomy and Neurobiology, Boston University Alzheimer's Disease Center, Boston University School of Medicine, Boston, Massachusetts.
  6. Department of Health Outcomes and Behavior, Moffitt Cancer Center, Tampa, Florida.
  7. School of Aging Studies, University of South Florida, Tampa, Florida.
  8. Alliance Statistics and Data Center, Duke University, Durham, North Carolina.
  9. Polibienestar Research Institute, University of Valencia, Valencia, Spain.
  10. Visiting Researcher, Georgetown University, Washington, DC.
  11. Department of Medicine, Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
  12. Department of Medical Oncology and Therapeutics Research, City of Hope Comprehensive Cancer Center, Duarte, California.
  13. Department of Medicine, Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina.
  14. Department of Medicine, Georgetown University School of Medicine, Washington, DC.
  15. Breast Cancer Program, Lombardi Comprehensive Cancer Center, Washington, DC.

PMID: 27447359 PMCID: PMC5113662 DOI: 10.1002/cncr.30208

Abstract

BACKGROUND: The number of survivors of breast cancer aged ≥65 years ("older") is growing, but to the authors' knowledge, little is known regarding the cognitive outcomes of these individuals.

METHODS: A cohort of cognitively intact older survivors with nonmetastatic, invasive breast cancer was recruited from 78 sites from 2004 through 2011; approximately 83.7% of the survivors (1280 survivors) completed baseline assessments. Follow-up data were collected at 6 months and annually for up to 7 years (median, 4.1 years). Cognitive function was self-reported using the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC QLQ-C30); scores ranged from 0 to 100, with a higher score indicating better function. Group-based trajectory modeling determined trajectories; women were assigned to a trajectory group based on the highest predicted probability of membership. Multinomial logistic regression evaluated the association between receipt of chemotherapy (with or without hormonal treatment) and trajectory group.

RESULTS: Survivors were aged 65 to 91 years; approximately 41% received chemotherapy. There were 3 cognitive trajectories: "maintained high" (42.3% of survivors); "phase shift" (50.1% of survivors), with scores slightly below but parallel to maintained high; and "accelerated decline" (7.6% of survivors), with the lowest baseline scores and greatest decline (from 71.7 [standard deviation, 19.8] to 58.3 [standard deviation, 21.9]). The adjusted odds of being in the accelerated decline group (vs the maintained high group) were 2.1 times higher (95% confidence interval, 1.3-3.5) for survivors who received chemotherapy (with or without hormonal therapy) versus those treated with hormonal therapy alone. Greater comorbidity and frailty also were found to be associated with accelerated decline.

CONCLUSIONS: Trajectory group analysis demonstrated that the majority of older survivors maintained good long-term self-reported cognitive function, and that only a small subset who were exposed to chemotherapy manifested accelerated cognitive decline. Future research is needed to determine factors that place some older survivors at risk of experiencing cognitive decline. Cancer 2016;122:3555-3563. © 2016 American Cancer Society.

© 2016 The Authors. Cancer published by Wiley Periodicals, Inc. on behalf of American Cancer Society.

Keywords: breast cancer; chemotherapy; cognition; older; survival; trajectory

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