PMID- 18650196 OWN - NLM STAT- MEDLINE DCOM- 20081009 LR - 20181201 IS - 1533-0028 (Print) IS - 1533-0028 (Linking) VI - 7 IP - 4 DP - 2008 Jul TI - A phase II study of cetuximab/irinotecan in patients with heavily pretreated metastatic colorectal cancer: predictive value of early specific toxicities. PG - 273-9 LID - 10.3816/CCC.2008.n.035 [doi] AB - BACKGROUND: This study was designed to evaluate the predictive value of early specific toxicities on efficacy of weekly irinotecan/cetuximab administered as salvage therapy in patients with metastatic colorectal cancer (CRC) refractory to oxaliplatin and irinotecan. PATIENTS AND METHODS: Seventy patients received a regimen composed of weekly irinotecan 125 mg/m2 as a 1-hour intravenous infusion and cetuximab 400 mg/m2 infused over 2 hours as the initial dose and 250 mg/m2 infused over 1 hour for subsequent administrations. A single treatment cycle was composed of 4 weekly irinotecan infusions followed by 2 weeks of rest. The predictive value of adverse events (AEs) attributable to cetuximab (rash) and major toxicities attributable to irinotecan (gastrointestinal [GI] and hematologic) were observed after the first cycle of treatment and, therefore, correlated to activity and efficacy of cetuximab and weekly irinotecan. RESULTS: Sixty-six of 70 patients received >or= 1 cycle of chemotherapy and were therefore evaluable for response. Overall, toxicity observed was generally mild and manageable. According to an intent-to-treat analysis, a partial response was exhibited in 15.7% of patients, with a median progression-free survival (PFS) and median overall survival time of 4 months and 9 months, respectively. As expected, PFS (P = .01) and median survival (P = .04) correlated strongly with the presence and severity of the rash. Surprisingly, the presence of at least moderate hematologic and GI toxicity was associated with improved PFS (P = .03). CONCLUSION: Our data suggest that irinotecan-induced AEs might predict a better outcome in advanced CRC. This finding would identify a different subset of patients-those likely to benefit from a renewed sensitivity to irinotecan induced by cetuximab. FAU - Gamucci, Teresa AU - Gamucci T AD - Department of Medical Oncology, S.S. Trinita Hospital of Sora, Frosinone, Italy. FAU - Nelli, Fabrizio AU - Nelli F FAU - Cianci, Giovanni AU - Cianci G FAU - Grassi, Giulia AU - Grassi G FAU - Moscetti, Luca AU - Moscetti L FAU - Sperduti, Isabella AU - Sperduti I FAU - Zeuli, Massimo AU - Zeuli M FAU - Cortesi, Enrico AU - Cortesi E FAU - D'Auria, Giuliana AU - D'Auria G FAU - Pollera, Camillo Francesco AU - Pollera CF LA - eng PT - Clinical Trial, Phase II PT - Journal Article PL - United States TA - Clin Colorectal Cancer JT - Clinical colorectal cancer JID - 101120693 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (Organoplatinum Compounds) RN - 04ZR38536J (Oxaliplatin) RN - 7673326042 (Irinotecan) RN - PQX0D8J21J (Cetuximab) RN - XT3Z54Z28A (Camptothecin) SB - IM MH - Adult MH - Aged MH - Antibodies, Monoclonal/administration & dosage MH - Antibodies, Monoclonal, Humanized MH - Antineoplastic Combined Chemotherapy Protocols/adverse effects/*therapeutic use MH - Camptothecin/administration & dosage/analogs & derivatives MH - Cetuximab MH - Colorectal Neoplasms/*drug therapy/mortality/physiopathology MH - Disease Progression MH - Drug Administration Schedule MH - Female MH - Humans MH - Irinotecan MH - Kaplan-Meier Estimate MH - Male MH - Middle Aged MH - Organoplatinum Compounds/administration & dosage MH - Oxaliplatin MH - Prognosis MH - Time Factors MH - Treatment Outcome EDAT- 2008/07/25 09:00 MHDA- 2008/10/10 09:00 CRDT- 2008/07/25 09:00 PHST- 2008/07/25 09:00 [pubmed] PHST- 2008/10/10 09:00 [medline] PHST- 2008/07/25 09:00 [entrez] AID - S1533-0028(11)70431-5 [pii] AID - 10.3816/CCC.2008.n.035 [doi] PST - ppublish SO - Clin Colorectal Cancer. 2008 Jul;7(4):273-9. doi: 10.3816/CCC.2008.n.035.