{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,24]],"date-time":"2026-02-24T05:51:58Z","timestamp":1771912318774,"version":"3.50.1"},"reference-count":25,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2021,4,13]],"date-time":"2021-04-13T00:00:00Z","timestamp":1618272000000},"content-version":"vor","delay-in-days":1,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"name":"National Cancer Institute of the National Institutes of Health","award":["U10CA180821"],"award-info":[{"award-number":["U10CA180821"]}]},{"name":"National Cancer Institute of the National Institutes of Health","award":["U10CA180882"],"award-info":[{"award-number":["U10CA180882"]}]},{"DOI":"10.13039\/100006316","name":"Alliance for Clinical Trials in Oncology","doi-asserted-by":"crossref","award":["UG1CA233180"],"award-info":[{"award-number":["UG1CA233180"]}],"id":[{"id":"10.13039\/100006316","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100006316","name":"Alliance for Clinical Trials in Oncology","doi-asserted-by":"crossref","award":["UG1CA233253"],"award-info":[{"award-number":["UG1CA233253"]}],"id":[{"id":"10.13039\/100006316","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100006316","name":"Alliance for Clinical Trials in Oncology","doi-asserted-by":"crossref","award":["UG1CA233339"],"award-info":[{"award-number":["UG1CA233339"]}],"id":[{"id":"10.13039\/100006316","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100006316","name":"Alliance for Clinical Trials in Oncology","doi-asserted-by":"crossref","award":["UG1CA233373"],"award-info":[{"award-number":["UG1CA233373"]}],"id":[{"id":"10.13039\/100006316","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100006316","name":"Alliance for Clinical Trials in Oncology","doi-asserted-by":"crossref","award":["U10CA180820"],"award-info":[{"award-number":["U10CA180820"]}],"id":[{"id":"10.13039\/100006316","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,5,6]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>Background<\/jats:title>\n                  <jats:p>Obesity and inactivity are associated with increased risk of cancer-related and overall mortality in breast cancer, but there are few data in metastatic disease.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>Cancer and Leukemia Group B 40502 was a randomized trial of first-line taxane-based chemotherapy for patients with metastatic breast cancer. Height and weight were collected at enrollment. After 299 patients enrolled, the study was amended to assess recreational physical activity (PA) at enrollment using the Nurses\u2019 Health Study Exercise Questionnaire. Associations with progression-free survival (PFS) and overall survival (OS) were evaluated using stratified Cox modeling (strata included hormone receptor status, prior taxane, bevacizumab use, and treatment arm). All statistical tests were 2-sided.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>A total of 799 patients were enrolled, and at the time of data lock, median follow-up was 60\u2009months. At enrollment, median age was 56.7\u2009years, 73.1% of participants had hormone receptor\u2013positive cancers, 42.6% had obesity, and 47.6% engaged in less than 3 metabolic equivalents of task (MET) hours of PA per week (&amp;lt;1\u2009hour of moderate PA). Neither baseline body mass index nor PA was statistically significantly associated with PFS or OS, although there was a marginally statistically significant increase in PFS (hazard ratio = 0.83, 95% confidence interval = 0.79 to 1.02; P\u2009=\u2009.08) and OS (hazard ratio = 0.81, 95% confidence interval = 0.65 to 1.02; P\u2009=\u2009.07) in patients who reported PA greater than 9 MET hours per week vs 0-9 MET hours per week.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>In a trial of first-line chemotherapy for metastatic breast cancer, rates of obesity and inactivity were high. There was no statistically significant relationship between body mass index and outcomes. More information is needed regarding the relationship between PA and outcomes.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/jncics\/pkab025","type":"journal-article","created":{"date-parts":[[2021,4,12]],"date-time":"2021-04-12T14:28:40Z","timestamp":1618237720000},"source":"Crossref","is-referenced-by-count":16,"title":["Physical Activity, Weight, and Outcomes in Patients Receiving Chemotherapy for Metastatic Breast Cancer (C40502\/Alliance)"],"prefix":"10.1093","volume":"5","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0633-3151","authenticated-orcid":false,"given":"Jennifer A","family":"Ligibel","sequence":"first","affiliation":[{"name":"Department of Medical Oncology, Dana-Farber\/Harvard Cancer Center, Boston, MA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luke","family":"Huebner","sequence":"additional","affiliation":[{"name":"Alliance Statistics and Data Center, Rochester, MN, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hope S","family":"Rugo","sequence":"additional","affiliation":[{"name":"University of California San Francisco, San Francisco, CA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Harold J","family":"Burstein","sequence":"additional","affiliation":[{"name":"Department of Medical Oncology, Dana-Farber\/Harvard Cancer Center, Boston, MA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9378-6094","authenticated-orcid":false,"given":"Debra L","family":"Toppmeyer","sequence":"additional","affiliation":[{"name":"Department of Medicine, Robert Wood Johnson Medical School, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carey K","family":"Anders","sequence":"additional","affiliation":[{"name":"Department of Medicine, Duke University, Division of Medical Oncology, Duke Cancer Institute, Duke Medical Center, Durham, NC, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8156-7492","authenticated-orcid":false,"given":"Cynthia","family":"Ma","sequence":"additional","affiliation":[{"name":"Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William T","family":"Barry","sequence":"additional","affiliation":[{"name":"Alliance Statistics and Data Center, Rochester, MN, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vera","family":"Suman","sequence":"additional","affiliation":[{"name":"Alliance Statistics and Data Center, Rochester, MN, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lisa A","family":"Carey","sequence":"additional","affiliation":[{"name":"Department of Medicine, Division of Medical Oncology, UNC Lineberger Comprehensive Cancer Center, Chapel Hill, NC, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4722-4824","authenticated-orcid":false,"given":"Ann H","family":"Partridge","sequence":"additional","affiliation":[{"name":"Department of Medical Oncology, Dana-Farber\/Harvard Cancer Center, Boston, MA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7144-8791","authenticated-orcid":false,"given":"Clifford A","family":"Hudis","sequence":"additional","affiliation":[{"name":"American Society of Clinical Oncology, Alexandria, VA, USA"},{"name":"Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8819-1723","authenticated-orcid":false,"given":"Eric P","family":"Winer","sequence":"additional","affiliation":[{"name":"Department of Medical Oncology, Dana-Farber\/Harvard Cancer Center, Boston, MA, 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