Population-based study of effectiveness of neoadjuvant radiotherapy on survival in US rectal cancer patients according to age

Abstract Recent cancer researches pay more attention to younger patients due to the variable treatment response among different age groups. Here we investigated the effectiveness of neoadjuvant radiation on the survival of younger and older patients in stage II/III rectal cancer. Data was obtained f...

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Autores principales: Leilei Wu, Shichao Pang, Qianlan Yao, Chen Jian, Ping Lin, Fangyoumin Feng, Hong Li, Yixue Li
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Publicado: Nature Portfolio 2017
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spelling oai:doaj.org-article:1ddf80997ec4434489697a9d9874ea902021-12-02T15:05:37ZPopulation-based study of effectiveness of neoadjuvant radiotherapy on survival in US rectal cancer patients according to age10.1038/s41598-017-02992-72045-2322https://doaj.org/article/1ddf80997ec4434489697a9d9874ea902017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02992-7https://doaj.org/toc/2045-2322Abstract Recent cancer researches pay more attention to younger patients due to the variable treatment response among different age groups. Here we investigated the effectiveness of neoadjuvant radiation on the survival of younger and older patients in stage II/III rectal cancer. Data was obtained from Surveillance, Epidemiology, and End Results (SEER) database (n = 12801). Propensity score matching was used to balance baseline covariates according to the status of neoadjuvant radiation. Our results showed that neoadjuvant radiation had better survival benefit (Log-rank P = 3.25e-06) and improved cancer-specific 3-year (87.6%; 95% CI: 86.4–88.7% vs. 84.1%; 95% CI: 82.8–85.3%) and 5-year survival rates (78.1%; 95% CI: 76.2–80.1% vs. 77%; 95% CI: 75.3–78.8%). In older groups (>50), neoadjuvant radiation was associated with survival benefits in stage II (HR: 0.741; 95% CI: 0.599–0.916; P = 5.80e-3) and stage III (HR: 0.656; 95% CI 0.564–0.764; P = 5.26e-08). Interestingly, neoadjuvant radiation did not increase survival rate in younger patients (< = 50) both in stage II (HR: 2.014; 95% CI: 0.9032–4.490; P = 0.087) and stage III (HR: 1.168; 95% CI: 0.829–1.646; P = 0.372). Additionally, neoadjuvant radiation significantly decreased the cancer-specific mortality in older patients, but increased mortality in younger patients. Our results provided new insights on the neoadjuvant radiation in rectal cancer, especially for the younger patients.Leilei WuShichao PangQianlan YaoChen JianPing LinFangyoumin FengHong LiYixue LiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Leilei Wu
Shichao Pang
Qianlan Yao
Chen Jian
Ping Lin
Fangyoumin Feng
Hong Li
Yixue Li
Population-based study of effectiveness of neoadjuvant radiotherapy on survival in US rectal cancer patients according to age
description Abstract Recent cancer researches pay more attention to younger patients due to the variable treatment response among different age groups. Here we investigated the effectiveness of neoadjuvant radiation on the survival of younger and older patients in stage II/III rectal cancer. Data was obtained from Surveillance, Epidemiology, and End Results (SEER) database (n = 12801). Propensity score matching was used to balance baseline covariates according to the status of neoadjuvant radiation. Our results showed that neoadjuvant radiation had better survival benefit (Log-rank P = 3.25e-06) and improved cancer-specific 3-year (87.6%; 95% CI: 86.4–88.7% vs. 84.1%; 95% CI: 82.8–85.3%) and 5-year survival rates (78.1%; 95% CI: 76.2–80.1% vs. 77%; 95% CI: 75.3–78.8%). In older groups (>50), neoadjuvant radiation was associated with survival benefits in stage II (HR: 0.741; 95% CI: 0.599–0.916; P = 5.80e-3) and stage III (HR: 0.656; 95% CI 0.564–0.764; P = 5.26e-08). Interestingly, neoadjuvant radiation did not increase survival rate in younger patients (< = 50) both in stage II (HR: 2.014; 95% CI: 0.9032–4.490; P = 0.087) and stage III (HR: 1.168; 95% CI: 0.829–1.646; P = 0.372). Additionally, neoadjuvant radiation significantly decreased the cancer-specific mortality in older patients, but increased mortality in younger patients. Our results provided new insights on the neoadjuvant radiation in rectal cancer, especially for the younger patients.
format article
author Leilei Wu
Shichao Pang
Qianlan Yao
Chen Jian
Ping Lin
Fangyoumin Feng
Hong Li
Yixue Li
author_facet Leilei Wu
Shichao Pang
Qianlan Yao
Chen Jian
Ping Lin
Fangyoumin Feng
Hong Li
Yixue Li
author_sort Leilei Wu
title Population-based study of effectiveness of neoadjuvant radiotherapy on survival in US rectal cancer patients according to age
title_short Population-based study of effectiveness of neoadjuvant radiotherapy on survival in US rectal cancer patients according to age
title_full Population-based study of effectiveness of neoadjuvant radiotherapy on survival in US rectal cancer patients according to age
title_fullStr Population-based study of effectiveness of neoadjuvant radiotherapy on survival in US rectal cancer patients according to age
title_full_unstemmed Population-based study of effectiveness of neoadjuvant radiotherapy on survival in US rectal cancer patients according to age
title_sort population-based study of effectiveness of neoadjuvant radiotherapy on survival in us rectal cancer patients according to age
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/1ddf80997ec4434489697a9d9874ea90
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