Impact of non-adherence to endocrine therapy on recurrence risk in older women with stage I breast cancer after breast-conserving surgery

Purpose We examined the impact of non-adherence to adjuvant endocrine therapy (ET) on the risk and site of recurrence among older women with early stage, hormone receptor positive (HR+) breast cancer (EBC). Methods A population-based cohort of women age ≥ 65 years with T1N0 HR + EBC who were diagnos...

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Veröffentlicht in:Breast cancer research and treatment 2023-08, Vol.201 (1), p.77-87
Hauptverfasser: Rodin, Danielle, Sutradhar, Rinku, Jerzak, Katarzyna J., Hahn, Ezra, Nguyen, Lena, Castelo, Matthew, Fatiregun, Omolara, Fong, Cindy, Mata, Danilo Giffoni M. M., Trebinjac, Sabina, Paszat, Lawrence, Rakovitch, Eileen
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container_issue 1
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container_title Breast cancer research and treatment
container_volume 201
creator Rodin, Danielle
Sutradhar, Rinku
Jerzak, Katarzyna J.
Hahn, Ezra
Nguyen, Lena
Castelo, Matthew
Fatiregun, Omolara
Fong, Cindy
Mata, Danilo Giffoni M. M.
Trebinjac, Sabina
Paszat, Lawrence
Rakovitch, Eileen
description Purpose We examined the impact of non-adherence to adjuvant endocrine therapy (ET) on the risk and site of recurrence among older women with early stage, hormone receptor positive (HR+) breast cancer (EBC). Methods A population-based cohort of women age ≥ 65 years with T1N0 HR + EBC who were diagnosed between 2010 and 2016 and treated with breast-conserving surgery (BCS) + ET was identified. Treatment and outcomes were ascertained through linkage with administrative databases. ET non-adherence was examined as a time-dependent covariate in multivariable cause-specific Cox regression models to evaluate its effect on the risks of ipsilateral local recurrence (LR), contralateral breast cancer, and distant metastases. Results The population cohort includes 2637 women; 73% ( N  = 1934) received radiation (RT) + ET and 27% ( N  = 703) received ET alone. At a median follow-up of 8.14 years, the first event was LR in 3.6% of women treated with ET alone and 1.4% for those treated with RT + ET ( p  
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M. ; Trebinjac, Sabina ; Paszat, Lawrence ; Rakovitch, Eileen</creator><creatorcontrib>Rodin, Danielle ; Sutradhar, Rinku ; Jerzak, Katarzyna J. ; Hahn, Ezra ; Nguyen, Lena ; Castelo, Matthew ; Fatiregun, Omolara ; Fong, Cindy ; Mata, Danilo Giffoni M. M. ; Trebinjac, Sabina ; Paszat, Lawrence ; Rakovitch, Eileen</creatorcontrib><description>Purpose We examined the impact of non-adherence to adjuvant endocrine therapy (ET) on the risk and site of recurrence among older women with early stage, hormone receptor positive (HR+) breast cancer (EBC). Methods A population-based cohort of women age ≥ 65 years with T1N0 HR + EBC who were diagnosed between 2010 and 2016 and treated with breast-conserving surgery (BCS) + ET was identified. Treatment and outcomes were ascertained through linkage with administrative databases. ET non-adherence was examined as a time-dependent covariate in multivariable cause-specific Cox regression models to evaluate its effect on the risks of ipsilateral local recurrence (LR), contralateral breast cancer, and distant metastases. Results The population cohort includes 2637 women; 73% ( N  = 1934) received radiation (RT) + ET and 27% ( N  = 703) received ET alone. At a median follow-up of 8.14 years, the first event was LR in 3.6% of women treated with ET alone and 1.4% for those treated with RT + ET ( p  &lt; 0.001); the risk of distant metastases was &lt; 1% in both groups. The proportion of time adherent to ET was 69.0% among those treated with RT + ET and 62.8% for those treated with ET alone. On multivariable analysis, increasing proportion of time non-adherent to ET was associated with increased risk of LR ((HR = 1.52 per 20% increase in time; 95%CI 1.25, 1.85; p  &lt; 0.001), contralateral BC (HR = 1.55; 95%CI 1.30, 1.84; p  &lt; 0.001), and distant metastases (HR = 1.44; 95%CI 1.08, 1.94; p  = 0.01) but absolute risks were low. Conclusion Non-adherence to adjuvant ET was associated with an increased risk of recurrence, but absolute recurrence rates were low.</description><identifier>ISSN: 0167-6806</identifier><identifier>EISSN: 1573-7217</identifier><identifier>DOI: 10.1007/s10549-023-06989-x</identifier><identifier>PMID: 37326765</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Breast cancer ; Breast surgery ; Cancer research ; Cancer therapies ; Endocrine therapy ; Epidemiology ; Football (College) ; Lumpectomy ; Medicine ; Medicine &amp; Public Health ; Metastases ; Metastasis ; Middle aged women ; Oncology ; Patient compliance ; Regression analysis ; Surgery</subject><ispartof>Breast cancer research and treatment, 2023-08, Vol.201 (1), p.77-87</ispartof><rights>The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><rights>2023. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.</rights><rights>COPYRIGHT 2023 Springer</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c473t-cdd4f96fd2dfb8691a62d869dfec70124d32184c1414a3bd1cae520789fc25013</citedby><cites>FETCH-LOGICAL-c473t-cdd4f96fd2dfb8691a62d869dfec70124d32184c1414a3bd1cae520789fc25013</cites><orcidid>0000-0001-9647-2851</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10549-023-06989-x$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10549-023-06989-x$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27923,27924,41487,42556,51318</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/37326765$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Rodin, Danielle</creatorcontrib><creatorcontrib>Sutradhar, Rinku</creatorcontrib><creatorcontrib>Jerzak, Katarzyna J.</creatorcontrib><creatorcontrib>Hahn, Ezra</creatorcontrib><creatorcontrib>Nguyen, Lena</creatorcontrib><creatorcontrib>Castelo, Matthew</creatorcontrib><creatorcontrib>Fatiregun, Omolara</creatorcontrib><creatorcontrib>Fong, Cindy</creatorcontrib><creatorcontrib>Mata, Danilo Giffoni M. M.</creatorcontrib><creatorcontrib>Trebinjac, Sabina</creatorcontrib><creatorcontrib>Paszat, Lawrence</creatorcontrib><creatorcontrib>Rakovitch, Eileen</creatorcontrib><title>Impact of non-adherence to endocrine therapy on recurrence risk in older women with stage I breast cancer after breast-conserving surgery</title><title>Breast cancer research and treatment</title><addtitle>Breast Cancer Res Treat</addtitle><addtitle>Breast Cancer Res Treat</addtitle><description>Purpose We examined the impact of non-adherence to adjuvant endocrine therapy (ET) on the risk and site of recurrence among older women with early stage, hormone receptor positive (HR+) breast cancer (EBC). Methods A population-based cohort of women age ≥ 65 years with T1N0 HR + EBC who were diagnosed between 2010 and 2016 and treated with breast-conserving surgery (BCS) + ET was identified. Treatment and outcomes were ascertained through linkage with administrative databases. ET non-adherence was examined as a time-dependent covariate in multivariable cause-specific Cox regression models to evaluate its effect on the risks of ipsilateral local recurrence (LR), contralateral breast cancer, and distant metastases. Results The population cohort includes 2637 women; 73% ( N  = 1934) received radiation (RT) + ET and 27% ( N  = 703) received ET alone. At a median follow-up of 8.14 years, the first event was LR in 3.6% of women treated with ET alone and 1.4% for those treated with RT + ET ( p  &lt; 0.001); the risk of distant metastases was &lt; 1% in both groups. The proportion of time adherent to ET was 69.0% among those treated with RT + ET and 62.8% for those treated with ET alone. On multivariable analysis, increasing proportion of time non-adherent to ET was associated with increased risk of LR ((HR = 1.52 per 20% increase in time; 95%CI 1.25, 1.85; p  &lt; 0.001), contralateral BC (HR = 1.55; 95%CI 1.30, 1.84; p  &lt; 0.001), and distant metastases (HR = 1.44; 95%CI 1.08, 1.94; p  = 0.01) but absolute risks were low. Conclusion Non-adherence to adjuvant ET was associated with an increased risk of recurrence, but absolute recurrence rates were low.</description><subject>Breast cancer</subject><subject>Breast surgery</subject><subject>Cancer research</subject><subject>Cancer therapies</subject><subject>Endocrine therapy</subject><subject>Epidemiology</subject><subject>Football (College)</subject><subject>Lumpectomy</subject><subject>Medicine</subject><subject>Medicine &amp; Public Health</subject><subject>Metastases</subject><subject>Metastasis</subject><subject>Middle aged women</subject><subject>Oncology</subject><subject>Patient compliance</subject><subject>Regression analysis</subject><subject>Surgery</subject><issn>0167-6806</issn><issn>1573-7217</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp9kl1vFCEUhonR2Fr9A14YEhPjzVQ-ZmDmsmn82KSJN3pNWDjsUmdgBabt_gT_tWynWmuMIYFweN4TzjkvQi8pOaWEyHeZkq4dGsJ4Q8TQD83NI3RMO8kbyah8jI4JFbIRPRFH6FnOl4SQQZLhKTrikjMhRXeMfqymnTYFR4dDDI22W0gQDOASMQQbTfKhXmpU7_Y4BpzAzGlBks_fsA84jhYSvo4TBHztyxbnojeAV3idQOeCja50wtqVui-xxsSQIV35sMF5ThtI--foidNjhhd35wn6-uH9l_NPzcXnj6vzs4vGtJJXobWtG4SzzLp1LwaqBbP1tA6MJJS1ljPat4a2tNV8banR0DEi-8EZ1hHKT9DbJe8uxe8z5KImnw2Mow4Q56xYzyTrOiF4RV__hV7GOYX6uwM1DFL2or2nNnoE5YOLJWlzSKrOZB1QbfRtrtN_UHVZmHztBjhf4w8Eb_4QbEGPZZvjOBdfW_cQZAtoUsw5gVO75Ced9ooSdTCKWoyiqlHUrVHUTRW9uittXk9gf0t-OaMCfAFyfQp1QPe1_yftTyNKyRo</recordid><startdate>20230801</startdate><enddate>20230801</enddate><creator>Rodin, Danielle</creator><creator>Sutradhar, Rinku</creator><creator>Jerzak, Katarzyna J.</creator><creator>Hahn, Ezra</creator><creator>Nguyen, Lena</creator><creator>Castelo, Matthew</creator><creator>Fatiregun, Omolara</creator><creator>Fong, Cindy</creator><creator>Mata, Danilo Giffoni M. 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M.</au><au>Trebinjac, Sabina</au><au>Paszat, Lawrence</au><au>Rakovitch, Eileen</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Impact of non-adherence to endocrine therapy on recurrence risk in older women with stage I breast cancer after breast-conserving surgery</atitle><jtitle>Breast cancer research and treatment</jtitle><stitle>Breast Cancer Res Treat</stitle><addtitle>Breast Cancer Res Treat</addtitle><date>2023-08-01</date><risdate>2023</risdate><volume>201</volume><issue>1</issue><spage>77</spage><epage>87</epage><pages>77-87</pages><issn>0167-6806</issn><eissn>1573-7217</eissn><abstract>Purpose We examined the impact of non-adherence to adjuvant endocrine therapy (ET) on the risk and site of recurrence among older women with early stage, hormone receptor positive (HR+) breast cancer (EBC). Methods A population-based cohort of women age ≥ 65 years with T1N0 HR + EBC who were diagnosed between 2010 and 2016 and treated with breast-conserving surgery (BCS) + ET was identified. Treatment and outcomes were ascertained through linkage with administrative databases. ET non-adherence was examined as a time-dependent covariate in multivariable cause-specific Cox regression models to evaluate its effect on the risks of ipsilateral local recurrence (LR), contralateral breast cancer, and distant metastases. Results The population cohort includes 2637 women; 73% ( N  = 1934) received radiation (RT) + ET and 27% ( N  = 703) received ET alone. At a median follow-up of 8.14 years, the first event was LR in 3.6% of women treated with ET alone and 1.4% for those treated with RT + ET ( p  &lt; 0.001); the risk of distant metastases was &lt; 1% in both groups. The proportion of time adherent to ET was 69.0% among those treated with RT + ET and 62.8% for those treated with ET alone. On multivariable analysis, increasing proportion of time non-adherent to ET was associated with increased risk of LR ((HR = 1.52 per 20% increase in time; 95%CI 1.25, 1.85; p  &lt; 0.001), contralateral BC (HR = 1.55; 95%CI 1.30, 1.84; p  &lt; 0.001), and distant metastases (HR = 1.44; 95%CI 1.08, 1.94; p  = 0.01) but absolute risks were low. Conclusion Non-adherence to adjuvant ET was associated with an increased risk of recurrence, but absolute recurrence rates were low.</abstract><cop>New York</cop><pub>Springer US</pub><pmid>37326765</pmid><doi>10.1007/s10549-023-06989-x</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0001-9647-2851</orcidid></addata></record>
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subjects Breast cancer
Breast surgery
Cancer research
Cancer therapies
Endocrine therapy
Epidemiology
Football (College)
Lumpectomy
Medicine
Medicine & Public Health
Metastases
Metastasis
Middle aged women
Oncology
Patient compliance
Regression analysis
Surgery
title Impact of non-adherence to endocrine therapy on recurrence risk in older women with stage I breast cancer after breast-conserving surgery
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