PMID- 35257465 OWN - NLM STAT- MEDLINE DCOM- 20220915 LR - 20221011 IS - 1445-5994 (Electronic) IS - 1444-0903 (Print) IS - 1444-0903 (Linking) VI - 52 IP - 9 DP - 2022 Sep TI - Pilot study for immunoglobulin E as a prognostic biomarker in coronavirus disease 2019. PG - 1495-1504 LID - 10.1111/imj.15728 [doi] AB - BACKGROUND: Laboratory biomarkers to estimate the severity of coronavirus disease 2019 (COVID-19) are crucial during the pandemic since resource allocation must be carefully planned. AIMS: To evaluate the effects of basal serum total immunoglobulin E (IgE) levels and changes in inflammatory parameters on the clinical progression of patients hospitalised with COVID-19. METHODS: Patients hospitalised with confirmed COVID-19 were included in the study. Laboratory data and total IgE levels were measured on admission. Lymphocyte, eosinophil, ferritin, d-dimer and C-reactive protein parameters were recorded at baseline and on the 3rd and 14th days of hospitalisation. RESULTS: The study enrolled 202 patients, of which 102 (50.5%) were males. The average age was 50.17 +/- 19.68 years. Of the COVID-19 patients, 41 (20.3%) showed clinical progression. Serum total IgE concentrations were markedly higher (172.90 (0-2124) vs 38.70 (0-912); P < 0.001) and serum eosinophil levels were significantly lower (0.015 (0-1.200) vs 0.040 (0-1.360); P = 0.002) in clinically worsened COVID-19 patients when compared with stable patients. The optimal cut-off for predicting clinical worsening was 105.2 ng/L, with 61% sensitivity, 82% specificity, 46.3% positive predictive value and 89.2% negative predictive value (area under the curve = 0.729). Multivariable analysis to define risk factors for disease progression identified higher total IgE and C-reactive protein levels as independent predictors. CONCLUSIONS: Our single-centre pilot study determined that total IgE levels may be a negative prognostic factor for clinical progression in patients hospitalised due to COVID-19 infection. Future studies are required to determine the impact of individuals' underlying immune predispositions on outcomes of COVID-19 infections. CI - (c) 2022 Royal Australasian College of Physicians. FAU - Aydin Guclu, Ozge AU - Aydin Guclu O AUID- ORCID: 0000-0003-1005-3205 AD - Department of Pulmonary Diseases, Uludag University Faculty of Medicine, Bursa, Turkey. AD - Department of Pulmonary Disease, Boyabat 75th Year State Hospital, Sinop, Turkey. FAU - Goktas, Seda S AU - Goktas SS AD - Department of Otolaryngology, Boyabat 75th Year State Hospital, Sinop, Turkey. FAU - Gorek Dilektasli, Asli AU - Gorek Dilektasli A AD - Department of Pulmonary Diseases, Uludag University Faculty of Medicine, Bursa, Turkey. FAU - Acet Ozturk, Nilufer A AU - Acet Ozturk NA AUID- ORCID: 0000-0002-6375-1472 AD - Department of Pulmonary Diseases, Uludag University Faculty of Medicine, Bursa, Turkey. FAU - Demirdogen, Ezgi AU - Demirdogen E AD - Department of Pulmonary Diseases, Uludag University Faculty of Medicine, Bursa, Turkey. FAU - Coskun, Funda AU - Coskun F AD - Department of Pulmonary Diseases, Uludag University Faculty of Medicine, Bursa, Turkey. FAU - Ediger, Dane AU - Ediger D AD - Department of Pulmonary Diseases, Section of Immunology and Allergy Diseases, Uludag University Faculty of Medicine, Bursa, Turkey. FAU - Ursavas, Ahmet AU - Ursavas A AD - Department of Pulmonary Diseases, Uludag University Faculty of Medicine, Bursa, Turkey. FAU - Uzaslan, Esra AU - Uzaslan E AD - Department of Pulmonary Diseases, Uludag University Faculty of Medicine, Bursa, Turkey. FAU - Erol, Hasim A AU - Erol HA AD - Department of Internal Medicine, Boyabat 75th Year State Hospital, Sinop, Turkey. FAU - Karacay, Nurdan D AU - Karacay ND AD - Department of Internal Medicine, Boyabat 75th Year State Hospital, Sinop, Turkey. FAU - Kaya Sel, Umut AU - Kaya Sel U AD - Department of Anesthesiology and Intensive Care, Boyabat 75th Year State Hospital, Sinop, Turkey. FAU - Karadag, Mehmet AU - Karadag M AD - Department of Pulmonary Diseases, Uludag University Faculty of Medicine, Bursa, Turkey. LA - eng PT - Journal Article DEP - 20220819 PL - Australia TA - Intern Med J JT - Internal medicine journal JID - 101092952 RN - 0 (Biomarkers) RN - 37341-29-0 (Immunoglobulin E) RN - 9007-41-4 (C-Reactive Protein) SB - IM MH - Adult MH - Aged MH - Biomarkers MH - C-Reactive Protein MH - *COVID-19 MH - Female MH - Humans MH - Immunoglobulin E MH - Male MH - Middle Aged MH - Pilot Projects MH - Prognosis MH - Retrospective Studies MH - SARS-CoV-2 PMC - PMC9111421 OTO - NOTNLM OT - COVID-19 OT - clinical progression OT - eosinophil OT - pilot study OT - total IgE EDAT- 2022/03/09 06:00 MHDA- 2022/09/16 06:00 PMCR- 2022/03/07 CRDT- 2022/03/08 05:42 PHST- 2022/02/14 00:00 [revised] PHST- 2021/10/22 00:00 [received] PHST- 2022/02/27 00:00 [accepted] PHST- 2022/03/09 06:00 [pubmed] PHST- 2022/09/16 06:00 [medline] PHST- 2022/03/08 05:42 [entrez] PHST- 2022/03/07 00:00 [pmc-release] AID - IMJ15728 [pii] AID - 10.1111/imj.15728 [doi] PST - ppublish SO - Intern Med J. 2022 Sep;52(9):1495-1504. doi: 10.1111/imj.15728. Epub 2022 Aug 19.