PMID- 36644451 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230202 IS - 1939-4551 (Print) IS - 1939-4551 (Electronic) IS - 1939-4551 (Linking) VI - 16 IP - 2 DP - 2023 Feb TI - Omalizumab may protect allergic patients against COVID-19: A systematic review. PG - 100741 LID - 10.1016/j.waojou.2023.100741 [doi] LID - 100741 AB - Omalizumab, which downregulates the immunoglobulin E (IgE) receptor site on plasmacytoid dendritic cells and thereby increases interferon-alpha (INF-alpha) production, may shorten the duration of viral infections by enhancing the antiviral immunity. A systematic review was conducted to investigate whether previous anti-IgE treatment with omalizumab could protect against SARS-CoV-2 disease ("COVID-19") (infection, disease duration, and severity), and whether IFN-alpha upregulation could be involved. The research included articles published from March 2020 to January 2022. An accurate search was performed on bibliographic biomedical database (MEDLINE - Pubmed, SCOPUS, EMBASE, BIOMED CENTRAL, Google scholar, COCHRANE LIBRARY, ClinicalTrial.gov) including cohorts, case reports and reviews. Different methods were used, based on the study design, to assess the quality of eligible studies. Several authors link omalizumab to a possible protection against viruses, but they often refer to studies carried out before the pandemic and with viruses other than SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) (eg, rhinoviruses -RV). Few cases of COVID-19 patients treated with omalizumab have been recorded, and, in most of them, no increased susceptibility to severe disease was observed. According to these data, the current indication is to continue omalizumab therapy during the pandemic. Moreover, although omalizumab may enhance the antiviral immune response even for SARS-CoV-2, further studies are needed to confirm this hypothesis. It would be helpful to establish a registry of omalizumab-treated (or in treatment) patients who have developed COVID-19. Finally, randomized controlled trials could be able to demonstrate the effect of omalizumab in protecting against severe SARS-CoV-2, through IFN-alpha upregulation or other immunological pathways. CI - (c) 2023 The Authors. FAU - Ghiglioni, Daniele Giovanni AU - Ghiglioni DG AD - Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, SC Pediatria Pneumoinfettivologia, Milan, Italy. FAU - Cozzi, Et Laura AU - Cozzi EL AD - University of Milan, Milan, Italy. FAU - Castagnoli, Riccardo AU - Castagnoli R AD - Pediatric Clinic, Department of Pediatrics, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy. FAU - Bruschi, Gaia AU - Bruschi G AD - University of Milan, Milan, Italy. FAU - Maffeis, Laura AU - Maffeis L AD - Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, SC Pediatria Immunoinfettivologia, Milan, Italy. FAU - Marchisio, Paola Giovanna AU - Marchisio PG AD - Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, SC Pediatria Pneumoinfettivologia, Milan, Italy. AD - Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy. FAU - Marseglia, Gian Luigi AU - Marseglia GL AD - Pediatric Clinic, Department of Pediatrics, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy. FAU - Licari, Amelia AU - Licari A AD - Pediatric Clinic, Department of Pediatrics, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy. LA - eng PT - Journal Article PT - Review DEP - 20230109 PL - United States TA - World Allergy Organ J JT - The World Allergy Organization journal JID - 101481283 PMC - PMC9826982 OTO - NOTNLM OT - COVID-19 OT - IFN-Alpha OT - Interferon OT - Omalizumab OT - SARS-CoV-2 EDAT- 2023/01/17 06:00 MHDA- 2023/01/17 06:01 PMCR- 2023/01/09 CRDT- 2023/01/16 03:02 PHST- 2022/08/08 00:00 [received] PHST- 2022/12/10 00:00 [revised] PHST- 2022/12/30 00:00 [accepted] PHST- 2023/01/17 06:00 [pubmed] PHST- 2023/01/17 06:01 [medline] PHST- 2023/01/16 03:02 [entrez] PHST- 2023/01/09 00:00 [pmc-release] AID - S1939-4551(23)00001-7 [pii] AID - 100741 [pii] AID - 10.1016/j.waojou.2023.100741 [doi] PST - ppublish SO - World Allergy Organ J. 2023 Feb;16(2):100741. doi: 10.1016/j.waojou.2023.100741. Epub 2023 Jan 9.