Phase II Study of Erlotinib (Tarceva) Alternating With Chemotherapy for Second-line Treatment of Metastatic Colorectal Cancer With Molecular Correlates for p53 Pathway
Inclusion Criteria:
Patients must fulfill all of the following criteria to be eligible for study entry:
- Age 18-80
- Able to provide informed consent
- Biopsy proven unresectable metastatic adenocarcinoma of the colon or rectum
- Documented progression on prior first-line oxaliplatin-based or irinotecan-based
regimen for metastatic colorectal cancer
- Radiographically measurable disease with at least one bidimensionally measurable
lesion of > 1 cm
- Prior first-line regimen must have been completed at least 4 weeks prior to study
treatment
- Use of biologic agents with first-line chemotherapy permitted
- Previous adjuvant regimens must have been greater than 6 months before inclusion
- Adequate organ function including bone marrow, liver and renal function as defined by
the following values: absolute neutrophil count > 1500/uL; Hgb > 9 g/dL; platelets >
90,000/uL; INR < 1.8 (unless in therapeutic range if taking warfarin or other
warfarin-derivative anticoagulants and are being monitored regularly for changes in
prothrombin time or INR); bilirubin < 2X ULN; alkaline phosphatase < 3X ULN; AST/ALT
< 5X ULN; serum creatinine < 1.5 X ULN
- ECOG status < 2
Exclusion Criteria:
Patients meeting any of the following criteria are ineligible for study entry:
- Prior second-line chemotherapy regimens for colorectal cancer
- Prior treatment with erlotinib or gefitinib
- CNS metastasis
- Second malignancies less than 5 years prior to enrollment. Completely resected basal
or squamous cell carcinoma of the skin is allowed.
- Untreated/unresolved bowel obstruction
- Inability to take oral mediations
- HIV positive
- Pregnancy
- Other uncontrolled medical illnesses
- Current diarrhea > grade 2
- Symptomatic angina or uncontrolled congestive heart failure