PMID- 38347461 OWN - NLM STAT- MEDLINE DCOM- 20240214 LR - 20240215 IS - 1471-2407 (Electronic) IS - 1471-2407 (Linking) VI - 24 IP - 1 DP - 2024 Feb 12 TI - Efficacy and safety of temozolomide-based regimens in advanced pancreatic neuroendocrine tumors: a systematic review and meta-analysis. PG - 192 LID - 10.1186/s12885-024-11926-2 [doi] LID - 192 AB - BACKGROUND: Recent advances in the management of pancreatic neuroendocrine tumors (pNETs) highlight the potential benefits of temozolomide, an alkylating agent, for these patients. In this meta-analysis, we aimed to assess the outcome of temozolomide, alone or in combination with other anticancer medications in patients with advanced pNET. METHODS: Online databases of PubMed, Web of Science, Embase, the Cochrane Library, and ClinicalTrials.gov were searched systematically for clinical trials that reported the efficacy and safety of temozolomide in patients with advanced pNET. Random-effect model was utilized to estimate pooled rates of outcomes based on Response Evaluation Criteria in Solid Tumors criteria, biochemical response, and adverse events (AEs). RESULTS: A total of 14 studies, providing details of 441 individuals with advanced pNET, were included. The quantitative analyses showed a pooled objective response rate (ORR) of 41.2% (95% confidence interval, CI, of 32.4%-50.6%), disease control rate (DCR) of 85.3% (95% CI of 74.9%-91.9%), and a more than 50% decrease from baseline chromogranin A levels of 44.9% (95% CI of 31.6%-49.0%). Regarding safety, the results showed that the pooled rates of nonserious AEs and serious AEs were 93.8% (95% CI of 88.3%-96.8%) and 23.7% (95% CI of 12.0%-41.5%), respectively. The main severe AEs encompassed hematological toxicities. CONCLUSIONS: In conclusion, our meta-analysis suggests that treatment with temozolomide, either as a monotherapy or in combination with other anticancer treatments might be an effective and relatively safe option for patients with advanced locally unresectable and metastatic pNET. However, additional clinical trials are required to further strengthen these findings. This study has been registered in PROSPERO (CRD42023409280). CI - (c) 2024. The Author(s). FAU - Taherifard, Erfan AU - Taherifard E AD - Department of Medicine, Division of Hematology & Oncology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA. FAU - Bakhtiar, Muhammad AU - Bakhtiar M AD - Department of Medicine, Division of Hematology & Oncology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA. FAU - Mahnoor, Mahnoor AU - Mahnoor M AD - Department of Medicine, Division of Hematology & Oncology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA. FAU - Ahmed, Rabeea AU - Ahmed R AD - Department of Medicine, Division of Hematology & Oncology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA. FAU - Cavalcante, Ludimila AU - Cavalcante L AD - Novant Health Cancer Institute, Charlotte, NC, USA. FAU - Zhang, Janie AU - Zhang J AD - Department of Medicine, Division of Hematology & Oncology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA. AD - UPMC Hillman Cancer Center, Pittsburgh, PA, USA. FAU - Saeed, Anwaar AU - Saeed A AD - Department of Medicine, Division of Hematology & Oncology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA. saeeda3@upmc.edu. AD - UPMC Hillman Cancer Center, Pittsburgh, PA, USA. saeeda3@upmc.edu. LA - eng PT - Meta-Analysis PT - Systematic Review DEP - 20240212 PL - England TA - BMC Cancer JT - BMC cancer JID - 100967800 RN - YF1K15M17Y (Temozolomide) SB - IM MH - Humans MH - Temozolomide/adverse effects MH - *Neuroendocrine Tumors/drug therapy/pathology MH - Response Evaluation Criteria in Solid Tumors MH - *Pancreatic Neoplasms/drug therapy/pathology MH - *Neuroectodermal Tumors, Primitive PMC - PMC10860315 OTO - NOTNLM OT - Adverse reactions OT - Drug-related side effects OT - Neuroendocrine tumors OT - Pancreatic neoplasms OT - Response evaluation criteria in solid tumors OT - Temozolomide COIS- A.S. reports research grants (to institution) from AstraZeneca, Bristol Myers Squibb, Merck, Clovis, Exelixis, Actuate Therapeutics, Incyte Corporation, Daiichi Sankyo, Five Prime Therapeutics, Amgen, Innovent Biologics, Dragonfly Therapeutics, KAHR Medical, and BioNtech and advisory board fees from AstraZeneca, Bristol Myers Squibb, Exelixis, Pfizer, and Daiichi Sankyo. The remaining authors have no relevant financial or non-financial interests to disclose. EDAT- 2024/02/13 00:42 MHDA- 2024/02/13 06:45 PMCR- 2024/02/12 CRDT- 2024/02/12 23:40 PHST- 2023/12/05 00:00 [received] PHST- 2024/01/27 00:00 [accepted] PHST- 2024/02/13 06:45 [medline] PHST- 2024/02/13 00:42 [pubmed] PHST- 2024/02/12 23:40 [entrez] PHST- 2024/02/12 00:00 [pmc-release] AID - 10.1186/s12885-024-11926-2 [pii] AID - 11926 [pii] AID - 10.1186/s12885-024-11926-2 [doi] PST - epublish SO - BMC Cancer. 2024 Feb 12;24(1):192. doi: 10.1186/s12885-024-11926-2.