Higher Biologically Effective Dose of Radiotherapy Is Associated With Improved Outcomes for Locally Advanced Non–Small Cell Lung Carcinoma Treated With Chemoradiation: An Analysis of the Radiation Therapy Oncology Group

Purpose Patients treated with chemoradiotherapy for locally advanced non–small-cell lung carcinoma (LA-NSCLC) were analyzed for local-regional failure (LRF) and overall survival (OS) with respect to radiotherapy dose intensity. Methods and Materials This study combined data from seven Radiation Ther...

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Veröffentlicht in:International journal of radiation oncology, biology, physics biology, physics, 2012-01, Vol.82 (1), p.425-434
Hauptverfasser: Machtay, Mitchell, M.D, Bae, Kyounghwa, Ph.D, Movsas, Benjamin, M.D, Paulus, Rebecca, B.S, Gore, Elizabeth M., M.D, Komaki, Ritsuko, M.D, Albain, Kathy, M.D, Sause, William T., M.D, Curran, Walter J., M.D
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container_issue 1
container_start_page 425
container_title International journal of radiation oncology, biology, physics
container_volume 82
creator Machtay, Mitchell, M.D
Bae, Kyounghwa, Ph.D
Movsas, Benjamin, M.D
Paulus, Rebecca, B.S
Gore, Elizabeth M., M.D
Komaki, Ritsuko, M.D
Albain, Kathy, M.D
Sause, William T., M.D
Curran, Walter J., M.D
description Purpose Patients treated with chemoradiotherapy for locally advanced non–small-cell lung carcinoma (LA-NSCLC) were analyzed for local-regional failure (LRF) and overall survival (OS) with respect to radiotherapy dose intensity. Methods and Materials This study combined data from seven Radiation Therapy Oncology Group (RTOG) trials in which chemoradiotherapy was used for LA-NSCLC: RTOG 88-08 (chemoradiation arm only), 90-15, 91-06, 92-04, 93-09 (nonoperative arm only), 94-10, and 98-01. The radiotherapeutic biologically effective dose (BED) received by each individual patient was calculated, as was the overall treatment time-adjusted BED (tBED) using standard formulae. Heterogeneity testing was done with chi-squared statistics, and weighted pooled hazard ratio estimates were used. Cox and Fine and Gray’s proportional hazard models were used for OS and LRF, respectively, to test the associations between BED and tBED adjusted for other covariates. Results A total of 1,356 patients were analyzed for BED (1,348 for tBED). The 2-year and 5-year OS rates were 38% and 15%, respectively. The 2-year and 5-year LRF rates were 46% and 52%, respectively. The BED (and tBED) were highly significantly associated with both OS and LRF, with or without adjustment for other covariates on multivariate analysis ( p < 0.0001). A 1-Gy BED increase in radiotherapy dose intensity was statistically significantly associated with approximately 4% relative improvement in survival; this is another way of expressing the finding that the pool-adjusted hazard ratio for survival as a function of BED was 0.96. Similarly, a 1-Gy tBED increase in radiotherapy dose intensity was statistically significantly associated with approximately 3% relative improvement in local-regional control; this is another way of expressing the finding that the pool-adjusted hazard ratio as a function of tBED was 0.97. Conclusions Higher radiotherapy dose intensity is associated with improved local-regional control and survival in the setting of chemoradiotherapy.
doi_str_mv 10.1016/j.ijrobp.2010.09.004
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Methods and Materials This study combined data from seven Radiation Therapy Oncology Group (RTOG) trials in which chemoradiotherapy was used for LA-NSCLC: RTOG 88-08 (chemoradiation arm only), 90-15, 91-06, 92-04, 93-09 (nonoperative arm only), 94-10, and 98-01. The radiotherapeutic biologically effective dose (BED) received by each individual patient was calculated, as was the overall treatment time-adjusted BED (tBED) using standard formulae. Heterogeneity testing was done with chi-squared statistics, and weighted pooled hazard ratio estimates were used. Cox and Fine and Gray’s proportional hazard models were used for OS and LRF, respectively, to test the associations between BED and tBED adjusted for other covariates. Results A total of 1,356 patients were analyzed for BED (1,348 for tBED). The 2-year and 5-year OS rates were 38% and 15%, respectively. The 2-year and 5-year LRF rates were 46% and 52%, respectively. The BED (and tBED) were highly significantly associated with both OS and LRF, with or without adjustment for other covariates on multivariate analysis ( p &lt; 0.0001). A 1-Gy BED increase in radiotherapy dose intensity was statistically significantly associated with approximately 4% relative improvement in survival; this is another way of expressing the finding that the pool-adjusted hazard ratio for survival as a function of BED was 0.96. Similarly, a 1-Gy tBED increase in radiotherapy dose intensity was statistically significantly associated with approximately 3% relative improvement in local-regional control; this is another way of expressing the finding that the pool-adjusted hazard ratio as a function of tBED was 0.97. Conclusions Higher radiotherapy dose intensity is associated with improved local-regional control and survival in the setting of chemoradiotherapy.</description><identifier>ISSN: 0360-3016</identifier><identifier>EISSN: 1879-355X</identifier><identifier>DOI: 10.1016/j.ijrobp.2010.09.004</identifier><identifier>PMID: 20980108</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject><![CDATA[Adult ; Advanced non–small-cell lung carcinoma ; Aged ; Aged, 80 and over ; Amifostine - administration & dosage ; Antineoplastic Combined Chemotherapy Protocols - therapeutic use ; Carboplatin - administration & dosage ; Carcinoma, Non-Small-Cell Lung - mortality ; Carcinoma, Non-Small-Cell Lung - pathology ; Carcinoma, Non-Small-Cell Lung - secondary ; Carcinoma, Non-Small-Cell Lung - therapy ; CARCINOMAS ; Chemoradiotherapy ; Chemoradiotherapy - methods ; Cisplatin - administration & dosage ; Clinical trials ; COMBINED THERAPY ; Data processing ; Dose-response effects ; Etoposide - administration & dosage ; FAILURES ; Female ; HAZARDS ; Hematology, Oncology and Palliative Medicine ; Humans ; Local-regional failure ; Lung ; Lung Neoplasms - mortality ; Lung Neoplasms - pathology ; Lung Neoplasms - therapy ; LUNGS ; Male ; Middle Aged ; MULTIVARIATE ANALYSIS ; Non-small cell lung carcinoma ; Oncology ; Paclitaxel - administration & dosage ; PATIENTS ; Proportional Hazards Models ; Radiation ; RADIATION DOSES ; Radiation oncology ; Radiation therapy ; Radiology ; RADIOLOGY AND NUCLEAR MEDICINE ; RADIOTHERAPY ; Radiotherapy Dosage ; Relative Biological Effectiveness ; Retrospective Studies ; Statistical analysis ; Survival ; Survival Analysis ; Survival with respect to radiotherapy dose intensity ; TESTING ; Treatment Failure ; Vinblastine - administration & dosage]]></subject><ispartof>International journal of radiation oncology, biology, physics, 2012-01, Vol.82 (1), p.425-434</ispartof><rights>Elsevier Inc.</rights><rights>2012 Elsevier Inc.</rights><rights>Copyright © 2012 Elsevier Inc. All rights reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c578t-321dbd3f2d73bc91c4571b353907a33e6afd7615ef7750f8e6aaedf6fc9db183</citedby><cites>FETCH-LOGICAL-c578t-321dbd3f2d73bc91c4571b353907a33e6afd7615ef7750f8e6aaedf6fc9db183</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.ijrobp.2010.09.004$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,777,781,882,3537,27905,27906,45976</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20980108$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/22055974$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Machtay, Mitchell, M.D</creatorcontrib><creatorcontrib>Bae, Kyounghwa, Ph.D</creatorcontrib><creatorcontrib>Movsas, Benjamin, M.D</creatorcontrib><creatorcontrib>Paulus, Rebecca, B.S</creatorcontrib><creatorcontrib>Gore, Elizabeth M., M.D</creatorcontrib><creatorcontrib>Komaki, Ritsuko, M.D</creatorcontrib><creatorcontrib>Albain, Kathy, M.D</creatorcontrib><creatorcontrib>Sause, William T., M.D</creatorcontrib><creatorcontrib>Curran, Walter J., M.D</creatorcontrib><title>Higher Biologically Effective Dose of Radiotherapy Is Associated With Improved Outcomes for Locally Advanced Non–Small Cell Lung Carcinoma Treated With Chemoradiation: An Analysis of the Radiation Therapy Oncology Group</title><title>International journal of radiation oncology, biology, physics</title><addtitle>Int J Radiat Oncol Biol Phys</addtitle><description>Purpose Patients treated with chemoradiotherapy for locally advanced non–small-cell lung carcinoma (LA-NSCLC) were analyzed for local-regional failure (LRF) and overall survival (OS) with respect to radiotherapy dose intensity. Methods and Materials This study combined data from seven Radiation Therapy Oncology Group (RTOG) trials in which chemoradiotherapy was used for LA-NSCLC: RTOG 88-08 (chemoradiation arm only), 90-15, 91-06, 92-04, 93-09 (nonoperative arm only), 94-10, and 98-01. The radiotherapeutic biologically effective dose (BED) received by each individual patient was calculated, as was the overall treatment time-adjusted BED (tBED) using standard formulae. Heterogeneity testing was done with chi-squared statistics, and weighted pooled hazard ratio estimates were used. Cox and Fine and Gray’s proportional hazard models were used for OS and LRF, respectively, to test the associations between BED and tBED adjusted for other covariates. Results A total of 1,356 patients were analyzed for BED (1,348 for tBED). The 2-year and 5-year OS rates were 38% and 15%, respectively. The 2-year and 5-year LRF rates were 46% and 52%, respectively. The BED (and tBED) were highly significantly associated with both OS and LRF, with or without adjustment for other covariates on multivariate analysis ( p &lt; 0.0001). A 1-Gy BED increase in radiotherapy dose intensity was statistically significantly associated with approximately 4% relative improvement in survival; this is another way of expressing the finding that the pool-adjusted hazard ratio for survival as a function of BED was 0.96. Similarly, a 1-Gy tBED increase in radiotherapy dose intensity was statistically significantly associated with approximately 3% relative improvement in local-regional control; this is another way of expressing the finding that the pool-adjusted hazard ratio as a function of tBED was 0.97. Conclusions Higher radiotherapy dose intensity is associated with improved local-regional control and survival in the setting of chemoradiotherapy.</description><subject>Adult</subject><subject>Advanced non–small-cell lung carcinoma</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Amifostine - administration &amp; dosage</subject><subject>Antineoplastic Combined Chemotherapy Protocols - therapeutic use</subject><subject>Carboplatin - administration &amp; dosage</subject><subject>Carcinoma, Non-Small-Cell Lung - mortality</subject><subject>Carcinoma, Non-Small-Cell Lung - pathology</subject><subject>Carcinoma, Non-Small-Cell Lung - secondary</subject><subject>Carcinoma, Non-Small-Cell Lung - therapy</subject><subject>CARCINOMAS</subject><subject>Chemoradiotherapy</subject><subject>Chemoradiotherapy - methods</subject><subject>Cisplatin - administration &amp; dosage</subject><subject>Clinical trials</subject><subject>COMBINED THERAPY</subject><subject>Data processing</subject><subject>Dose-response effects</subject><subject>Etoposide - administration &amp; dosage</subject><subject>FAILURES</subject><subject>Female</subject><subject>HAZARDS</subject><subject>Hematology, Oncology and Palliative Medicine</subject><subject>Humans</subject><subject>Local-regional failure</subject><subject>Lung</subject><subject>Lung Neoplasms - mortality</subject><subject>Lung Neoplasms - pathology</subject><subject>Lung Neoplasms - therapy</subject><subject>LUNGS</subject><subject>Male</subject><subject>Middle Aged</subject><subject>MULTIVARIATE ANALYSIS</subject><subject>Non-small cell lung carcinoma</subject><subject>Oncology</subject><subject>Paclitaxel - administration &amp; dosage</subject><subject>PATIENTS</subject><subject>Proportional Hazards Models</subject><subject>Radiation</subject><subject>RADIATION DOSES</subject><subject>Radiation oncology</subject><subject>Radiation therapy</subject><subject>Radiology</subject><subject>RADIOLOGY AND NUCLEAR MEDICINE</subject><subject>RADIOTHERAPY</subject><subject>Radiotherapy Dosage</subject><subject>Relative Biological Effectiveness</subject><subject>Retrospective Studies</subject><subject>Statistical analysis</subject><subject>Survival</subject><subject>Survival Analysis</subject><subject>Survival with respect to radiotherapy dose intensity</subject><subject>TESTING</subject><subject>Treatment Failure</subject><subject>Vinblastine - administration &amp; 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Bae, Kyounghwa, Ph.D ; Movsas, Benjamin, M.D ; Paulus, Rebecca, B.S ; Gore, Elizabeth M., M.D ; Komaki, Ritsuko, M.D ; Albain, Kathy, M.D ; Sause, William T., M.D ; Curran, Walter J., M.D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c578t-321dbd3f2d73bc91c4571b353907a33e6afd7615ef7750f8e6aaedf6fc9db183</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Adult</topic><topic>Advanced non–small-cell lung carcinoma</topic><topic>Aged</topic><topic>Aged, 80 and over</topic><topic>Amifostine - administration &amp; dosage</topic><topic>Antineoplastic Combined Chemotherapy Protocols - therapeutic use</topic><topic>Carboplatin - administration &amp; dosage</topic><topic>Carcinoma, Non-Small-Cell Lung - mortality</topic><topic>Carcinoma, Non-Small-Cell Lung - pathology</topic><topic>Carcinoma, Non-Small-Cell Lung - secondary</topic><topic>Carcinoma, Non-Small-Cell Lung - therapy</topic><topic>CARCINOMAS</topic><topic>Chemoradiotherapy</topic><topic>Chemoradiotherapy - methods</topic><topic>Cisplatin - administration &amp; dosage</topic><topic>Clinical trials</topic><topic>COMBINED THERAPY</topic><topic>Data processing</topic><topic>Dose-response effects</topic><topic>Etoposide - administration &amp; dosage</topic><topic>FAILURES</topic><topic>Female</topic><topic>HAZARDS</topic><topic>Hematology, Oncology and Palliative Medicine</topic><topic>Humans</topic><topic>Local-regional failure</topic><topic>Lung</topic><topic>Lung Neoplasms - mortality</topic><topic>Lung Neoplasms - pathology</topic><topic>Lung Neoplasms - therapy</topic><topic>LUNGS</topic><topic>Male</topic><topic>Middle Aged</topic><topic>MULTIVARIATE ANALYSIS</topic><topic>Non-small cell lung carcinoma</topic><topic>Oncology</topic><topic>Paclitaxel - administration &amp; dosage</topic><topic>PATIENTS</topic><topic>Proportional Hazards Models</topic><topic>Radiation</topic><topic>RADIATION DOSES</topic><topic>Radiation oncology</topic><topic>Radiation therapy</topic><topic>Radiology</topic><topic>RADIOLOGY AND NUCLEAR MEDICINE</topic><topic>RADIOTHERAPY</topic><topic>Radiotherapy Dosage</topic><topic>Relative Biological Effectiveness</topic><topic>Retrospective Studies</topic><topic>Statistical analysis</topic><topic>Survival</topic><topic>Survival Analysis</topic><topic>Survival with respect to radiotherapy dose intensity</topic><topic>TESTING</topic><topic>Treatment Failure</topic><topic>Vinblastine - administration &amp; dosage</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Machtay, Mitchell, M.D</creatorcontrib><creatorcontrib>Bae, Kyounghwa, Ph.D</creatorcontrib><creatorcontrib>Movsas, Benjamin, M.D</creatorcontrib><creatorcontrib>Paulus, Rebecca, B.S</creatorcontrib><creatorcontrib>Gore, Elizabeth M., M.D</creatorcontrib><creatorcontrib>Komaki, Ritsuko, M.D</creatorcontrib><creatorcontrib>Albain, Kathy, M.D</creatorcontrib><creatorcontrib>Sause, William T., M.D</creatorcontrib><creatorcontrib>Curran, Walter J., M.D</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>International journal of radiation oncology, biology, physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Machtay, Mitchell, M.D</au><au>Bae, Kyounghwa, Ph.D</au><au>Movsas, Benjamin, M.D</au><au>Paulus, Rebecca, B.S</au><au>Gore, Elizabeth M., M.D</au><au>Komaki, Ritsuko, M.D</au><au>Albain, Kathy, M.D</au><au>Sause, William T., M.D</au><au>Curran, Walter J., M.D</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Higher Biologically Effective Dose of Radiotherapy Is Associated With Improved Outcomes for Locally Advanced Non–Small Cell Lung Carcinoma Treated With Chemoradiation: An Analysis of the Radiation Therapy Oncology Group</atitle><jtitle>International journal of radiation oncology, biology, physics</jtitle><addtitle>Int J Radiat Oncol Biol Phys</addtitle><date>2012-01-01</date><risdate>2012</risdate><volume>82</volume><issue>1</issue><spage>425</spage><epage>434</epage><pages>425-434</pages><issn>0360-3016</issn><eissn>1879-355X</eissn><abstract>Purpose Patients treated with chemoradiotherapy for locally advanced non–small-cell lung carcinoma (LA-NSCLC) were analyzed for local-regional failure (LRF) and overall survival (OS) with respect to radiotherapy dose intensity. Methods and Materials This study combined data from seven Radiation Therapy Oncology Group (RTOG) trials in which chemoradiotherapy was used for LA-NSCLC: RTOG 88-08 (chemoradiation arm only), 90-15, 91-06, 92-04, 93-09 (nonoperative arm only), 94-10, and 98-01. The radiotherapeutic biologically effective dose (BED) received by each individual patient was calculated, as was the overall treatment time-adjusted BED (tBED) using standard formulae. Heterogeneity testing was done with chi-squared statistics, and weighted pooled hazard ratio estimates were used. Cox and Fine and Gray’s proportional hazard models were used for OS and LRF, respectively, to test the associations between BED and tBED adjusted for other covariates. Results A total of 1,356 patients were analyzed for BED (1,348 for tBED). The 2-year and 5-year OS rates were 38% and 15%, respectively. The 2-year and 5-year LRF rates were 46% and 52%, respectively. The BED (and tBED) were highly significantly associated with both OS and LRF, with or without adjustment for other covariates on multivariate analysis ( p &lt; 0.0001). A 1-Gy BED increase in radiotherapy dose intensity was statistically significantly associated with approximately 4% relative improvement in survival; this is another way of expressing the finding that the pool-adjusted hazard ratio for survival as a function of BED was 0.96. Similarly, a 1-Gy tBED increase in radiotherapy dose intensity was statistically significantly associated with approximately 3% relative improvement in local-regional control; this is another way of expressing the finding that the pool-adjusted hazard ratio as a function of tBED was 0.97. Conclusions Higher radiotherapy dose intensity is associated with improved local-regional control and survival in the setting of chemoradiotherapy.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>20980108</pmid><doi>10.1016/j.ijrobp.2010.09.004</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0360-3016
ispartof International journal of radiation oncology, biology, physics, 2012-01, Vol.82 (1), p.425-434
issn 0360-3016
1879-355X
language eng
recordid cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_5764542
source MEDLINE; Elsevier ScienceDirect Journals
subjects Adult
Advanced non–small-cell lung carcinoma
Aged
Aged, 80 and over
Amifostine - administration & dosage
Antineoplastic Combined Chemotherapy Protocols - therapeutic use
Carboplatin - administration & dosage
Carcinoma, Non-Small-Cell Lung - mortality
Carcinoma, Non-Small-Cell Lung - pathology
Carcinoma, Non-Small-Cell Lung - secondary
Carcinoma, Non-Small-Cell Lung - therapy
CARCINOMAS
Chemoradiotherapy
Chemoradiotherapy - methods
Cisplatin - administration & dosage
Clinical trials
COMBINED THERAPY
Data processing
Dose-response effects
Etoposide - administration & dosage
FAILURES
Female
HAZARDS
Hematology, Oncology and Palliative Medicine
Humans
Local-regional failure
Lung
Lung Neoplasms - mortality
Lung Neoplasms - pathology
Lung Neoplasms - therapy
LUNGS
Male
Middle Aged
MULTIVARIATE ANALYSIS
Non-small cell lung carcinoma
Oncology
Paclitaxel - administration & dosage
PATIENTS
Proportional Hazards Models
Radiation
RADIATION DOSES
Radiation oncology
Radiation therapy
Radiology
RADIOLOGY AND NUCLEAR MEDICINE
RADIOTHERAPY
Radiotherapy Dosage
Relative Biological Effectiveness
Retrospective Studies
Statistical analysis
Survival
Survival Analysis
Survival with respect to radiotherapy dose intensity
TESTING
Treatment Failure
Vinblastine - administration & dosage
title Higher Biologically Effective Dose of Radiotherapy Is Associated With Improved Outcomes for Locally Advanced Non–Small Cell Lung Carcinoma Treated With Chemoradiation: An Analysis of the Radiation Therapy Oncology Group
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