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Research Article| Volume 7, SUPPLEMENT 1, S28-S36, December 2007

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Exploring Alternative Individualized Treatment Strategies in Colorectal Cancer

  • Author Footnotes
    1 Dr Wilson has no relevant relationships to disclose.
    Peter M. Wilson
    Footnotes
    1 Dr Wilson has no relevant relationships to disclose.
    Affiliations
    Department of Pathology, University of Southern California/Norris Comprehensive Cancer Center, Keck School of Medicine, Los Angeles
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  • Author Footnotes
    2 Dr Ladner has no relevant relationships to disclose.
    Robert D. Ladner
    Footnotes
    2 Dr Ladner has no relevant relationships to disclose.
    Affiliations
    Department of Pathology, University of Southern California/Norris Comprehensive Cancer Center, Keck School of Medicine, Los Angeles
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  • Author Footnotes
    3 Dr Lenz has received research support from Roche, Bristol-Myers Squibb, Eli Lilly, sanofi-aventis, Novartis Oncology, Genentech BioOncology, ImClone, Pfizer, and AstraZeneca, has served as a paid consultant or been on an Advisory Board for Merck, Response Genetics, Genentech BioOncology, Amgen, Novartis Oncology, sanofi-aventis, Pfizer, Bristol-Myers Squibb, and ImClone, and has served on a Speaker's Bureau for Roche, Pfizer, Eli Lilly, sanofi-aventis, and Merck.
    Heinz-Josef Lenz
    Correspondence
    Address for correspondence: Heinz-Josef Lenz, MD, University of Southern California/Norris Comprehensive Cancer Center, Keck School of Medicine, 1441 Eastlake Ave, Suite 3456, Los Angeles, CA 90033 Fax: 323-865-0061
    Footnotes
    3 Dr Lenz has received research support from Roche, Bristol-Myers Squibb, Eli Lilly, sanofi-aventis, Novartis Oncology, Genentech BioOncology, ImClone, Pfizer, and AstraZeneca, has served as a paid consultant or been on an Advisory Board for Merck, Response Genetics, Genentech BioOncology, Amgen, Novartis Oncology, sanofi-aventis, Pfizer, Bristol-Myers Squibb, and ImClone, and has served on a Speaker's Bureau for Roche, Pfizer, Eli Lilly, sanofi-aventis, and Merck.
    Affiliations
    Division of Medical Oncology, University of Southern California/Norris Comprehensive Cancer Center, Keck School of Medicine, Los Angeles
    Search for articles by this author
  • Author Footnotes
    1 Dr Wilson has no relevant relationships to disclose.
    2 Dr Ladner has no relevant relationships to disclose.
    3 Dr Lenz has received research support from Roche, Bristol-Myers Squibb, Eli Lilly, sanofi-aventis, Novartis Oncology, Genentech BioOncology, ImClone, Pfizer, and AstraZeneca, has served as a paid consultant or been on an Advisory Board for Merck, Response Genetics, Genentech BioOncology, Amgen, Novartis Oncology, sanofi-aventis, Pfizer, Bristol-Myers Squibb, and ImClone, and has served on a Speaker's Bureau for Roche, Pfizer, Eli Lilly, sanofi-aventis, and Merck.
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      Abstract

      Colorectal cancer (CRC) is the third most commonly diagnosed cancer in men and women in the United States, with a predicted 154,000 new cases this year. For > 40 years, 5-fluorouracil (5-FU) has remained the central agent in therapeutic regimens used in the treatment of CRC, with single-agent response rates (RRs) of 20%-25% in advancedstage disease. The past decade has witnessed the introduction of newer agents, such as the DNA-damaging agents oxaliplatin and irinotecan, which when used in combination with 5-FU, have dramatically increased RRs to 40%-50% in advanced disease and improved overall survival. The development of monoclonal antibodies targeting the epidermal growth factor receptor or vascular endothelial growth factor have now demonstrated additional clinical benefit for patients with metastatic disease, and the clinical development of these agents continues to progress. However, many patients will die, and a significant proportion will experience severe chemotherapy-induced toxicities, while deriving little or no benefit. Global efforts are currently under way to identify reliable and validated cassettes of markers with the ability to predict response and toxicity from a chemotherapeutic regimen. In addition, the ability to accurately predict patients with early-stage disease at high risk of recurrence will enable the appropriate administration of adjuvant therapy. The emerging cancer stem cell hypothesis continues to gain momentum with ongoing research, suggesting this might become one of the prime targets for future therapy. Together, these approaches are spearheading a paradigm shift toward individualized treatment strategies in CRC treatment.

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