Sym004 in Combination With FOLFIRI in Metastatic Colorectal Cancer Patients

Main inclusion Criteria: 1. Male or female, at least 18 years of age at the time of informed consent 2. Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0 or 1 3. Histologically or cytologically confirmed, locally advanced or metastatic colorectal cancer (CRC) that is documented to be without Kirsten rat sarcoma (KRAS) or neuroblastoma rat sarcoma (NRAS) gene mutations (i.e., tumors must express the KRAS and NRAS wild type \[WT\], exon 2, 3 and 4). 4. Failed (defined as radiologic progression) treatment for locally advanced or metastatic disease with first-line combination therapy of oxaliplatin and a fluoropyrimidine, with or without bevacizumab, during treatment or \< 3 months after the last dose of first-line therapy and within \< 3 months of C1/D1. Patients who discontinued first-line therapy due to toxicity may be enrolled provided progression occurred \< 6 months after the last dose of the first-line therapy regimen. or Failed (defined as radiologic progression) adjuvant therapy with combination therapy of oxaliplatin and a fluoropyrimidine during treatment or within \< 6 months after the last dose of oxaliplatin and within \< 6 months of C1/D1. 5. Eligible for FOLFIRI 6. Measurable disease according to RECIST v1.1 Main exclusion Criteria: 1. Prior therapy with anti-EGFR antibodies, anti-EGFR small molecule inhibitors or irinotecan (CPT-11) 2. Any antineoplastic agent (standard or investigational) within 4 weeks prior to C1/D1 3. Significant gastrointestinal abnormalities 4. Patients with a significant cardiovascular disease or condition 5. Abnormal hematologic, renal or hepatic function