PMID- 37887199 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231029 IS - 2079-6382 (Print) IS - 2079-6382 (Electronic) IS - 2079-6382 (Linking) VI - 12 IP - 10 DP - 2023 Sep 29 TI - The Clinical Efficacy of Multidose Oritavancin: A Systematic Review. LID - 10.3390/antibiotics12101498 [doi] LID - 1498 AB - Oritavancin (ORI) is a semisynthetic lipoglycopeptide approved as a single 1200 mg dose intravenous infusion for the treatment of acute bacterial skin and skin structure infections (ABSSSIs) caused by Gram-positive organisms in adults. The pharmacokinetic/pharmacodynamic (PK/PD) linear kinetic profile and long terminal half-life (~393 h) of ORI make it therapeutically attractive for the treatment of other Gram-positive infections for which prolonged therapy is needed. Multidose regimens are adopted in real-world clinical practice with promising results, but aggregated efficacy data are still lacking. A comprehensive search on PubMed/Medline, Scopus, Cochrane and Google Scholar databases was performed to include papers published up to the end of January 2023. All articles on ORI multiple doses usage, including case reports, with quantitative data and relevant clinical information were included. Two reviewers independently assessed papers against the inclusion/exclusion criteria and for methodological quality. Differences in opinion were adjudicated by a third party. From 1751 potentially relevant papers identified by this search, a total of 16 studies met the inclusion criteria and were processed further in the final data analysis. We extracted data concerning clinical response, bacteriologic response, mortality and adverse events (AEs). From the 16 included papers, 301 cases of treatment with multidose ORIs were identified. Multidose regimens comprised an initial ORI dose of 1200 mg followed by 1200 mg or 800 mg subsequent doses with a varying total number and frequency of reinfusions. The most often treated infections and isolates were osteomyelitis (148; 54.4%), ABSSSI (35; 12.9%) and cellulitis (14; 5.1%); and MRSA (121), MSSA (66), CoNS (17), E. faecalis (13) and E. faecium (12), respectively. Clinical cure and improvement by multidose ORI regimens were observed in 85% (231/272) and 8% (22/272) patients, respectively. Multidose ORI was safe and well tolerated; the most frequent AEs were infusion-related reactions and hypoglycemia. A multidose ORI regimen may be beneficial in treating other Gram-positive infections besides ABSSSIs, with a good safety profile. Further studies are warranted to ascertain the superiority of one multidose ORI scheme or posology over the other. FAU - Baiardi, Giammarco AU - Baiardi G AUID- ORCID: 0000-0001-7809-077X AD - Pharmacology and Toxicology Unit, Department of Internal Medicine, University of Genoa, 16132 Genoa, Italy. AD - Clinical Pharmacology Unit, Ente Ospedaliero Ospedali Galliera, 16128 Genoa, Italy. FAU - Cameran Caviglia, Michela AU - Cameran Caviglia M AUID- ORCID: 0009-0003-0973-6188 AD - Pharmacology and Toxicology Unit, Department of Internal Medicine, University of Genoa, 16132 Genoa, Italy. AD - Clinical Pharmacology Unit, Ente Ospedaliero Ospedali Galliera, 16128 Genoa, Italy. FAU - Piras, Fabio AU - Piras F AD - Pharmacology and Toxicology Unit, Department of Internal Medicine, University of Genoa, 16132 Genoa, Italy. AD - Clinical Pharmacology Unit, Ente Ospedaliero Ospedali Galliera, 16128 Genoa, Italy. FAU - Sacco, Fabio AU - Sacco F AD - Pharmacology and Toxicology Unit, Department of Internal Medicine, University of Genoa, 16132 Genoa, Italy. AD - Clinical Pharmacology Unit, Ente Ospedaliero Ospedali Galliera, 16128 Genoa, Italy. FAU - Prinapori, Roberta AU - Prinapori R AD - Department of Infectious Diseases, Ente Ospedaliero Ospedali Galliera, 16128 Genoa, Italy. FAU - Cristina, Maria Luisa AU - Cristina ML AD - Operating Unit Hospital Hygiene, Ente Ospedaliero Ospedali Galliera, 16128 Genoa, Italy. AD - Department of Health Sciences, University of Genoa, 16132 Genoa, Italy. FAU - Mattioli, Francesca AU - Mattioli F AUID- ORCID: 0000-0001-8460-0262 AD - Pharmacology and Toxicology Unit, Department of Internal Medicine, University of Genoa, 16132 Genoa, Italy. AD - Clinical Pharmacology Unit, Ente Ospedaliero Ospedali Galliera, 16128 Genoa, Italy. FAU - Sartini, Marina AU - Sartini M AUID- ORCID: 0000-0002-7127-2893 AD - Operating Unit Hospital Hygiene, Ente Ospedaliero Ospedali Galliera, 16128 Genoa, Italy. AD - Department of Health Sciences, University of Genoa, 16132 Genoa, Italy. FAU - Pontali, Emanuele AU - Pontali E AUID- ORCID: 0000-0002-1085-0442 AD - Department of Infectious Diseases, Ente Ospedaliero Ospedali Galliera, 16128 Genoa, Italy. LA - eng PT - Journal Article PT - Review DEP - 20230929 PL - Switzerland TA - Antibiotics (Basel) JT - Antibiotics (Basel, Switzerland) JID - 101637404 PMC - PMC10604328 OTO - NOTNLM OT - clinical pharmacology OT - drug administration schedule OT - multidose regimen OT - oritavancin OT - pharmacokinetics OT - treatment outcome COIS- The authors declare no conflicts of interest. EDAT- 2023/10/27 12:43 MHDA- 2023/10/27 12:44 PMCR- 2023/09/29 CRDT- 2023/10/27 06:55 PHST- 2023/07/26 00:00 [received] PHST- 2023/09/26 00:00 [revised] PHST- 2023/09/27 00:00 [accepted] PHST- 2023/10/27 12:44 [medline] PHST- 2023/10/27 12:43 [pubmed] PHST- 2023/10/27 06:55 [entrez] PHST- 2023/09/29 00:00 [pmc-release] AID - antibiotics12101498 [pii] AID - antibiotics-12-01498 [pii] AID - 10.3390/antibiotics12101498 [doi] PST - epublish SO - Antibiotics (Basel). 2023 Sep 29;12(10):1498. doi: 10.3390/antibiotics12101498.