PMID- 35015255 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220331 IS - 2193-8229 (Print) IS - 2193-6382 (Electronic) IS - 2193-6382 (Linking) VI - 11 IP - 1 DP - 2022 Feb TI - Efficacy and Safety of Omadacycline Versus Linezolid in Acute Bacterial Skin and Skin Structure Infections in Persons Who Inject Drugs. PG - 517-531 LID - 10.1007/s40121-021-00587-4 [doi] AB - INTRODUCTION: Acute bacterial skin and skin structure infections (ABSSSI) represent one of the most common reasons for emergency department visits, and are frequent complications of intravenous drug use in persons who inject drugs (PWID). This study examined the efficacy and safety of omadacycline, versus linezolid, in PWID and persons who do not inject drugs, in the Phase 3 Omadacycline in Acute Skin and Skin Structure Infection (OASIS-1, OASIS-2) studies. METHODS: Eligible participants were aged >/= 18 years with qualifying skin infections: wound infection, cellulitis, erysipelas, or major abscess. The primary efficacy endpoint was early clinical response (ECR) in the modified intent-to-treat (mITT) population, defined as survival with >/= 20% reduction in lesion size at 48-72 h after the first dose of omadacycline or linezolid. Key secondary endpoints included investigator-assessed clinical response at the post-treatment evaluation (PTE) in the mITT and clinical per-protocol populations, and clinical response at PTE in the micro-mITT population. Safety was assessed based on adverse events (AEs) and standard clinical laboratory tests. Efficacy endpoints of clinical response at ECR and PTE were analyzed for the mITT and clinically evaluable (CE) PTE populations. RESULTS: In total, 1380 patients (822 PWID, 558 non-PWID) were included in this secondary analysis. Wound infections were reported more frequently in the PWID subgroup (72.8%) at baseline; cellulitis or erysipelas (43.9%) and major abscess (37.4%) were the most frequently reported baseline infections in the non-PWID subgroup. Clinical success rates at ECR and PTE in the mITT population, and at PTE in the CE population, were high for patients receiving omadacycline or linezolid. Severe or serious treatment-emergent AEs (TEAEs), and TEAEs leading to discontinuation, were infrequent. CONCLUSION: This subgroup analysis showed that omadacycline was effective and well tolerated, regardless of PWID status. CI - (c) 2022. The Author(s). FAU - Moran, Gregory J AU - Moran GJ AD - Olive View-UCLA Medical Center, 14445 Olive View Dr, Sylmar, CA, 91342, USA. gmoran@ucla.edu. FAU - Chitra, Surya AU - Chitra S AD - Paratek Pharmaceuticals, Inc., King of Prussia, PA, USA. FAU - McGovern, Paul C AU - McGovern PC AD - Paratek Pharmaceuticals, Inc., King of Prussia, PA, USA. LA - eng PT - Journal Article DEP - 20220111 PL - New Zealand TA - Infect Dis Ther JT - Infectious diseases and therapy JID - 101634499 PMC - PMC8847501 OTO - NOTNLM OT - Abscess OT - Cellulitis OT - Drug use OT - Erysipelas OT - Infectious disease OT - Intravenous drug use OT - Wounds EDAT- 2022/01/12 06:00 MHDA- 2022/01/12 06:01 PMCR- 2022/01/11 CRDT- 2022/01/11 12:34 PHST- 2021/11/16 00:00 [received] PHST- 2021/12/23 00:00 [accepted] PHST- 2022/01/12 06:00 [pubmed] PHST- 2022/01/12 06:01 [medline] PHST- 2022/01/11 12:34 [entrez] PHST- 2022/01/11 00:00 [pmc-release] AID - 10.1007/s40121-021-00587-4 [pii] AID - 587 [pii] AID - 10.1007/s40121-021-00587-4 [doi] PST - ppublish SO - Infect Dis Ther. 2022 Feb;11(1):517-531. doi: 10.1007/s40121-021-00587-4. Epub 2022 Jan 11.