Potential Use of Biomarkers or QoL Parameters in Colorectal Cancer Drug Approval

11/20/2003


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Table of Contents

Potential Use of Biomarkers or QoL Parameters in Colorectal Cancer Drug Approval

Biomarkers and QOL in CRC Drug Approval

CEA: Background

CEA Background (cont.)

Changes in CEA with Cytotoxic Chemotherapy

CEA in CRC: Translation

Additional Caveat: Hepatotoxicity

Quality of Life: A multidimensional construct encompassing complete information on the impact of disease or its treatment on a patient’s usual or expected physical, psychological, and social well-being

How Symptomatic is the Average Advanced Disease CRC Patient?

How Do We Measure QOL in CRC Patients?

Generic Instruments

Cancer-Specific Instruments

Symptom-Focused Questionnaires

Clinical Benefit Response

Interpretation and Application of HRQoL Scores

Summary of HRQoL Data in CRC

IFL vs. FL: Front-Line

IFL vs. BSC: Second-Line

FOLFOX vs. LV5FU2: Front-Line

Problem: We Don’t Know that Palliative Chemotherapy Truly Improves QOL

Problem: Inconsistent Methodologies with HRQoL Assessment

Problems with HRQoL Assessment (cont.):

Problem: HRQoL Reflects Efficacy and Safety (Toxicity)

Problems with Use of CBR in CRC

Additional Problems with Using Symptom Assessment

Additional Problems with Using Symptom Assessment (cont.)

Colorectal Cancer Drug Approval

Biomarkers: Conclusions

HRQoL Assessment: Conclusions

HRQoL Assessment: Conclusions (cont.)

Clinical Benefit Response: Conclusions

DISCUSSION

Author:

Home Page: http://www.fda.gov/cder/drug/cancer_endpoints/default.htm

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