CALGB/SWOG 80405: Phase III trial of irinotecan

BACKGROUND: Little is known about the interaction of comorbidities and age on survival outcomes in colorectal cancer (mCRC), nor how comorbidities impact treatment tolerance. METHODS: We utilized a cohort of 1345 mCRC patients enrolled in CALGB/SWOG 80405, a multicenter phase III trial of fluorouracil/leucovorin + oxaliplatin (FOLFOX) or irinotecan (FOLFIRI) plus bevacizumab, cetuximab or both. Endpoints were overall survival (OS), progression-free survival (PFS), and grade ≥ 3 toxicities assessed using NCI CTCAE v...

BACKGROUND: Irinotecan/5-FU (FOLFIRI) or oxaliplatin/5-FU (FOLFOX), combined with bevacizumab or cetuximab, are approved, first-line treatments for metastatic colorectal cancer (mCRC). We aimed at identifying germline variants associated with survival in mCRC patients treated with these regimens in CALGB/SWOG 80405. METHODS: Patients with mCRC receiving either FOLFOX or FOLFIRI were randomized to either cetuximab or bevacizumab. DNA from peripheral blood was genotyped for ~700,000 single-nucleotide polymorphisms (SNPs)...

PURPOSE: To determine the predictive and prognostic value of the consensus molecular subtypes (CMSs) of colorectal cancer (CRC) that represent a merging of gene expression-based features largely in primary tumors from six independent classification systems and provide a framework for capturing the intrinsic heterogeneity of CRC in patients enrolled in CALGB/SWOG 80405. PATIENTS AND METHODS: CALGB/SWOG 80405 is a phase III trial that compared the addition of bevacizumab or cetuximab to infusional fluorouracil, leucovorin, and oxaliplatin or fluorouracil, leucovorin, and irinotecan as first-line treatment of advanced CRC...

Cetuximab, an IgG1 chimeric monoclonal antibody directed against the epidermal growth factor receptor (EGFR), has been shown to have antitumor activity against EGFR-expressing colorectal cancer (CRC). Although the activity of cetuximab monotherapy is notable,cetuximab-based combinations have conferred greater benefit, with two-fold higher response rates and nearly three-fold longer progression free-survival with cetuximab plus irinotecan compared with cetuximab alone,even in irinotecan-refractory patients. Cetuximab monotherapy should be reserved for patients who cannot tolerate combination therapy...