PMID- 34885147 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240404 IS - 2072-6694 (Print) IS - 2072-6694 (Electronic) IS - 2072-6694 (Linking) VI - 13 IP - 23 DP - 2021 Nov 30 TI - Is There a Benefit of Oxaliplatin in Combination with Neoadjuvant Chemoradiotherapy for Locally Advanced Rectal Cancer? An Updated Meta-Analysis. LID - 10.3390/cancers13236035 [doi] LID - 6035 AB - BACKGROUND: Neoadjuvant fluoropyrimidine (5FU or capecitabine)-based chemoradiotherapy (CRT) has been considered the standard of care for locally advanced rectal cancer (LARC). Whether addition of oxaliplatin (OXP) will further improve clinical outcomes is still unclear. METHODS: To identify clinical trials combining oxaliplatin in preoperative CRT or perioperative chemotherapy for LARC published until March 2021, we searched PubMed and the Cochrane Library. We also searched for relevant ASCO conference abstracts. The primary endpoint was disease-free survival (DFS). Data were extracted from every study to perform a meta-analysis using Review Manager (version 5.3). RESULTS: A total of seven randomized clinical trials (ACCORD-12, CARO-AIO-04, FOWARC, JIAO, NSABP, PETACC-6, and STAR-01) with 5782 stage II or III rectal cancer patients were analyzed, including 2727 patients with OXP + 5FU regimen and 3055 patients with 5FU alone. Compared with the 5FU alone group, the OXP + 5FU regimen improved DFS (HR = 0.90, 95% CI: 0.81-0.99, p = 0.03) and pathologic complete response (pCR) (OR = 1.21, 95% CI: 1.07-1.37, p = 0.002). Patients treated with the OXP + 5FU regimen had significantly less metastatic progression (OR = 0.79; 95% CI, 0.67 to 0.94; p = 0.007). Considering adverse events (AEs), there was more grade 3-4 diarrhea with OXP + 5FU (OR = 2.41, 95% CI: 1.74-3.32, p < 0.00001). However, there were no significant differences grade 3-4 hematologic AEs (OR = 1.16, 95% CI: 0.87-1.57, p = 0.31). CONCLUSIONS: Our meta-analysis with long-term results from the randomized studies showed a benefit of the addition of OXP + 5FU regiment in terms of DFS, metastatic progression, and pCR rate that did not translate to improved OS. FAU - Des Guetz, Gaetan AU - Des Guetz G AD - Medical Oncology Department, Delafontaine Hospital, 93200 St Denis, France. AD - Department of Surgery, Faculty of Medicine, University of Limoges, 87032 Limoges, France. FAU - Landre, Thierry AU - Landre T AUID- ORCID: 0000-0003-0967-1276 AD - Unite de Coordination en Onco-Geriatrie, Hopitaux Universitaires Paris Seine-St-Denis, AP-HP, 93270 Sevran, France. FAU - Bollet, Marc A AU - Bollet MA AD - Centre de Radiotherapie Hartmann, 92300 Levallois-Perret, France. FAU - Mathonnet, Muriel AU - Mathonnet M AUID- ORCID: 0000-0002-9127-3068 AD - Department of Surgery, Faculty of Medicine, University of Limoges, 87032 Limoges, France. AD - Department of Surgery, University Hospital of Limoges, 87032 Limoges, France. FAU - Quero, Laurent AU - Quero L AUID- ORCID: 0000-0002-8781-2540 AD - INSERM U1160, Universite de Paris, 75010 Paris, France. AD - Radiation Oncology Department, Saint-Louis University Hospital, AP-HP, 75010 Paris, France. LA - eng PT - Journal Article PT - Review DEP - 20211130 PL - Switzerland TA - Cancers (Basel) JT - Cancers JID - 101526829 PMC - PMC8657124 OTO - NOTNLM OT - meta-analysis OT - neoadjuvant OT - oxaliplatin OT - radiotherapy OT - randomized OT - rectal COIS- The authors declare that they have no known competing financial interest or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/12/11 06:00 MHDA- 2021/12/11 06:01 PMCR- 2021/11/30 CRDT- 2021/12/10 01:06 PHST- 2021/09/20 00:00 [received] PHST- 2021/11/15 00:00 [revised] PHST- 2021/11/26 00:00 [accepted] PHST- 2021/12/10 01:06 [entrez] PHST- 2021/12/11 06:00 [pubmed] PHST- 2021/12/11 06:01 [medline] PHST- 2021/11/30 00:00 [pmc-release] AID - cancers13236035 [pii] AID - cancers-13-06035 [pii] AID - 10.3390/cancers13236035 [doi] PST - epublish SO - Cancers (Basel). 2021 Nov 30;13(23):6035. doi: 10.3390/cancers13236035.