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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Impact of Young Age on Treatment Efficacy and Safety in Advanced Colorectal Cancer: A Pooled Analysis of Patients From Nine First-Line Phase III Chemotherapy Trials</title>
<author><name sortKey="Blanke, Charles D" sort="Blanke, Charles D" uniqKey="Blanke C" first="Charles D." last="Blanke">Charles D. Blanke</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Bot, Brian M" sort="Bot, Brian M" uniqKey="Bot B" first="Brian M." last="Bot">Brian M. Bot</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Thomas, David M" sort="Thomas, David M" uniqKey="Thomas D" first="David M." last="Thomas">David M. Thomas</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Bleyer, Archie" sort="Bleyer, Archie" uniqKey="Bleyer A" first="Archie" last="Bleyer">Archie Bleyer</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Kohne, Claus Henning" sort="Kohne, Claus Henning" uniqKey="Kohne C" first="Claus-Henning" last="Kohne">Claus-Henning Kohne</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Seymour, Matthew T" sort="Seymour, Matthew T" uniqKey="Seymour M" first="Matthew T." last="Seymour">Matthew T. Seymour</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="De Gramont, Aimery" sort="De Gramont, Aimery" uniqKey="De Gramont A" first="Aimery" last="De Gramont">Aimery De Gramont</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Goldberg, Richard M" sort="Goldberg, Richard M" uniqKey="Goldberg R" first="Richard M." last="Goldberg">Richard M. Goldberg</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Sargent, Daniel J" sort="Sargent, Daniel J" uniqKey="Sargent D" first="Daniel J." last="Sargent">Daniel J. Sargent</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">PMC</idno>
<idno type="pmid">21646604</idno>
<idno type="pmc">4874194</idno>
<idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4874194</idno>
<idno type="RBID">PMC:4874194</idno>
<idno type="doi">10.1200/JCO.2010.33.5281</idno>
<date when="2011">2011</date>
<idno type="wicri:Area/Pmc/Corpus">000450</idno>
<idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000450</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Impact of Young Age on Treatment Efficacy and Safety in Advanced Colorectal Cancer: A Pooled Analysis of Patients From Nine First-Line Phase III Chemotherapy Trials</title>
<author><name sortKey="Blanke, Charles D" sort="Blanke, Charles D" uniqKey="Blanke C" first="Charles D." last="Blanke">Charles D. Blanke</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Bot, Brian M" sort="Bot, Brian M" uniqKey="Bot B" first="Brian M." last="Bot">Brian M. Bot</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Thomas, David M" sort="Thomas, David M" uniqKey="Thomas D" first="David M." last="Thomas">David M. Thomas</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Bleyer, Archie" sort="Bleyer, Archie" uniqKey="Bleyer A" first="Archie" last="Bleyer">Archie Bleyer</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Kohne, Claus Henning" sort="Kohne, Claus Henning" uniqKey="Kohne C" first="Claus-Henning" last="Kohne">Claus-Henning Kohne</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Seymour, Matthew T" sort="Seymour, Matthew T" uniqKey="Seymour M" first="Matthew T." last="Seymour">Matthew T. Seymour</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="De Gramont, Aimery" sort="De Gramont, Aimery" uniqKey="De Gramont A" first="Aimery" last="De Gramont">Aimery De Gramont</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Goldberg, Richard M" sort="Goldberg, Richard M" uniqKey="Goldberg R" first="Richard M." last="Goldberg">Richard M. Goldberg</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Sargent, Daniel J" sort="Sargent, Daniel J" uniqKey="Sargent D" first="Daniel J." last="Sargent">Daniel J. Sargent</name>
<affiliation><nlm:aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</nlm:aff>
</affiliation>
</author>
</analytic>
<series><title level="j">Journal of Clinical Oncology</title>
<idno type="ISSN">0732-183X</idno>
<idno type="eISSN">1527-7755</idno>
<imprint><date when="2011">2011</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><textClass></textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en"><sec><title>Purpose</title>
<p>Colorectal cancer predominantly occurs in the elderly, but approximately 5% of patients are 50 years old or younger. We sought to determine whether young age is prognostic, or whether it influences efficacy/toxicity of chemotherapy, in patients with advanced disease.</p>
</sec>
<sec><title>Methods</title>
<p>We analyzed individual data on 6,284 patients from nine phase III trials of advanced colorectal cancer (aCRC) that used fluorouracil-based single-agent and combination chemotherapy. End points included progression-free survival (PFS), overall survival (OS), response rate (RR), and grade 3 or worse adverse events. Stratified Cox and adjusted logistic-regression models were used to test for age effects and age-treatment interactions.</p>
</sec>
<sec><title>Results</title>
<p>A total of 793 patients (13%) were younger than 50 years old; 188 of these patients (3% of total patients) were younger than 40 years old. Grade 3 or worse nausea (10% <italic>v</italic>
7%; <italic>P</italic>
= .01) was more common, and severe diarrhea (11% <italic>v</italic>
14%; <italic>P</italic>
= .001) and neutropenia (23% <italic>v</italic>
26%; <italic>P</italic>
< .001) were less common in young (younger than 50 years) than in older (older than 50 years) patients. Age was prognostic for PFS, with poorer outcomes occurring in those younger than 50 years (median, 6.0 <italic>v</italic>
7.5 months; hazard ratio, 1.10; <italic>P</italic>
= .02), but it did not affect RR or OS. In the subset of monotherapy versus combination chemotherapy trials, the relative benefits of multiagent chemotherapy were similar for young and older patients. Results were comparable when utilizing an age cut point of 40 years.</p>
</sec>
<sec><title>Conclusion</title>
<p>Young age is modestly associated with poorer PFS but not OS or RR in treated patients with aCRC, and young patients have more nausea but less diarrhea and neutropenia with chemotherapy in general. Young versus older patients derive the same benefits from combination chemotherapy. Absent results of a clinical trial, standard combination chemotherapy approaches are appropriate for young patients with aCRC.</p>
</sec>
</div>
</front>
</TEI>
<pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">J Clin Oncol</journal-id>
<journal-id journal-id-type="iso-abbrev">J. Clin. Oncol</journal-id>
<journal-id journal-id-type="hwp">jco</journal-id>
<journal-id journal-id-type="pmc">jco</journal-id>
<journal-id journal-id-type="publisher-id">JCO</journal-id>
<journal-title-group><journal-title>Journal of Clinical Oncology</journal-title>
</journal-title-group>
<issn pub-type="ppub">0732-183X</issn>
<issn pub-type="epub">1527-7755</issn>
<publisher><publisher-name>American Society of Clinical Oncology</publisher-name>
</publisher>
</journal-meta>
<article-meta><article-id pub-id-type="pmid">21646604</article-id>
<article-id pub-id-type="pmc">4874194</article-id>
<article-id pub-id-type="publisher-id">35281</article-id>
<article-id pub-id-type="doi">10.1200/JCO.2010.33.5281</article-id>
<article-categories><subj-group subj-group-type="hwp-journal-coll"><subject>Gic5</subject>
</subj-group>
<subj-group subj-group-type="heading"><subject>ORIGINAL REPORTS</subject>
<subj-group><subject>Gastrointestinal Cancer</subject>
</subj-group>
</subj-group>
</article-categories>
<title-group><article-title>Impact of Young Age on Treatment Efficacy and Safety in Advanced Colorectal Cancer: A Pooled Analysis of Patients From Nine First-Line Phase III Chemotherapy Trials</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Blanke</surname>
<given-names>Charles D.</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
<xref ref-type="corresp" rid="cor1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Bot</surname>
<given-names>Brian M.</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Thomas</surname>
<given-names>David M.</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Bleyer</surname>
<given-names>Archie</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Kohne</surname>
<given-names>Claus-Henning</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Seymour</surname>
<given-names>Matthew T.</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>de Gramont</surname>
<given-names>Aimery</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Goldberg</surname>
<given-names>Richard M.</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Sargent</surname>
<given-names>Daniel J.</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<aff id="aff1">Charles D. Blanke, University of British Columbia and British Columbia Cancer Agency, Vancouver, British Columbia, Canada; Brian M. Bot and Daniel J. Sargent, Mayo Clinic, Rochester, MN; David M. Thomas, Peter MacCallum Cancer Centre, Melbourne, Australia; Archie Bleyer, St Charles Medical Center, Bend, OR; Claus-Henning Kohne, Clinic for Oncology and Hematologie, Oldenburg, Germany; Matthew T. Seymour, University of Leeds, Leeds, United Kingdom; Aimery de Gramont, Hospital St Antoine, Paris, France; and Richard M. Goldberg, University of North Carolina, Chapel Hill, NC.</aff>
</contrib-group>
<author-notes><corresp id="cor1">Corresponding author: Charles D. Blanke, MD, FACP, FRCPC, 600 W 10th Ave, #4211-C, Vancouver, British Columbia V5Z4E6, Canada; e-mail: <email>cblanke@bccancer.bc.ca</email>
.</corresp>
</author-notes>
<pub-date pub-type="ppub"><day>10</day>
<month>7</month>
<year>2011</year>
</pub-date>
<pub-date pub-type="epub"><day>6</day>
<month>6</month>
<year>2011</year>
</pub-date>
<pub-date pub-type="pmc-release"><day>6</day>
<month>6</month>
<year>2011</year>
</pub-date>
<pmc-comment> PMC Release delay is 0 months and 0 days and was based on the
. </pmc-comment>
<volume>29</volume>
<issue>20</issue>
<fpage>2781</fpage>
<lpage>2786</lpage>
<history><date date-type="received"><day>18</day>
<month>1</month>
<year>2011</year>
</date>
<date date-type="accepted"><day>13</day>
<month>4</month>
<year>2011</year>
</date>
</history>
<permissions><copyright-statement>© 2011 by American Society of Clinical Oncology</copyright-statement>
<copyright-year>2011</copyright-year>
</permissions>
<self-uri xlink:title="pdf" xlink:type="simple" xlink:href="zlj02011002781.pdf"></self-uri>
<abstract><sec><title>Purpose</title>
<p>Colorectal cancer predominantly occurs in the elderly, but approximately 5% of patients are 50 years old or younger. We sought to determine whether young age is prognostic, or whether it influences efficacy/toxicity of chemotherapy, in patients with advanced disease.</p>
</sec>
<sec><title>Methods</title>
<p>We analyzed individual data on 6,284 patients from nine phase III trials of advanced colorectal cancer (aCRC) that used fluorouracil-based single-agent and combination chemotherapy. End points included progression-free survival (PFS), overall survival (OS), response rate (RR), and grade 3 or worse adverse events. Stratified Cox and adjusted logistic-regression models were used to test for age effects and age-treatment interactions.</p>
</sec>
<sec><title>Results</title>
<p>A total of 793 patients (13%) were younger than 50 years old; 188 of these patients (3% of total patients) were younger than 40 years old. Grade 3 or worse nausea (10% <italic>v</italic>
7%; <italic>P</italic>
= .01) was more common, and severe diarrhea (11% <italic>v</italic>
14%; <italic>P</italic>
= .001) and neutropenia (23% <italic>v</italic>
26%; <italic>P</italic>
< .001) were less common in young (younger than 50 years) than in older (older than 50 years) patients. Age was prognostic for PFS, with poorer outcomes occurring in those younger than 50 years (median, 6.0 <italic>v</italic>
7.5 months; hazard ratio, 1.10; <italic>P</italic>
= .02), but it did not affect RR or OS. In the subset of monotherapy versus combination chemotherapy trials, the relative benefits of multiagent chemotherapy were similar for young and older patients. Results were comparable when utilizing an age cut point of 40 years.</p>
</sec>
<sec><title>Conclusion</title>
<p>Young age is modestly associated with poorer PFS but not OS or RR in treated patients with aCRC, and young patients have more nausea but less diarrhea and neutropenia with chemotherapy in general. Young versus older patients derive the same benefits from combination chemotherapy. Absent results of a clinical trial, standard combination chemotherapy approaches are appropriate for young patients with aCRC.</p>
</sec>
</abstract>
</article-meta>
</front>
</pmc>
</record>
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