PMID- 32717807 OWN - NLM STAT- MEDLINE DCOM- 20200812 LR - 20201218 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 21 IP - 15 DP - 2020 Jul 23 TI - HLA-B*44 and C*01 Prevalence Correlates with Covid19 Spreading across Italy. LID - 10.3390/ijms21155205 [doi] LID - 5205 AB - The spread of COVID-19 is showing huge, unexplained, differences between northern and southern Italy. We hypothesized that the regional prevalence of specific class I human leukocyte antigen (HLA) alleles, which shape the anti-viral immune response, might partly underlie these differences. Through an ecological approach, we analyzed whether a set of HLA alleles (A, B, C), known to be involved in the immune response against infections, correlates with COVID-19 incidence. COVID-19 data were provided by the National Civil Protection Department, whereas HLA allele prevalence was retrieved through the Italian Bone-Marrow Donors Registry. Among all the alleles, HLA-A*25, B*08, B*44, B*15:01, B*51, C*01, and C*03 showed a positive log-linear correlation with COVID-19 incidence rate fixed on 9 April 2020 in proximity of the national outbreak peak (Pearson's coefficients between 0.50 and 0.70, p-value < 0.0001), whereas HLA-B*14, B*18, and B*49 showed an inverse log-linear correlation (Pearson's coefficients between -0.47 and -0.59, p-value < 0.0001). When alleles were examined simultaneously using a multiple regression model to control for confounding factors, HLA-B*44 and C*01 were still positively and independently associated with COVID-19: a growth rate of 16% (95%CI: 0.1-35%) per 1% point increase in B*44 prevalence; and of 19% (95%CI: 1-41%) per 1% point increase in C*01 prevalence. Our epidemiologic analysis, despite the limits of the ecological approach, is strongly suggestive of a permissive role of HLA-C*01 and B*44 towards SARS-CoV-2 infection, which warrants further investigation in case-control studies. This study opens a new potential avenue for the identification of sub-populations at risk, which could provide Health Services with a tool to define more targeted clinical management strategies and priorities in vaccination campaigns. FAU - Correale, Pierpaolo AU - Correale P AD - Unit of Medical Oncology, Oncology Department, Grand Metropolitan Hospital 'Bianchi Melacrino Morelli', I-89124 Reggio Calabria, Italy. FAU - Mutti, Luciano AU - Mutti L AUID- ORCID: 0000-0002-1578-2637 AD - Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, PA 19122, USA. FAU - Pentimalli, Francesca AU - Pentimalli F AUID- ORCID: 0000-0003-4740-6801 AD - Cell Biology and Biotherapy Unit, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, I-80131 Napoli, Italy. FAU - Baglio, Giovanni AU - Baglio G AD - Ministry of Health, I-00153 Rome, Italy. FAU - Saladino, Rita Emilena AU - Saladino RE AD - Tissue Typing Unit, Grand Metropolitan Hospital 'Bianchi Melacrino Morelli', I-89124 Reggio Calabria, Italy. FAU - Sileri, Pierpaolo AU - Sileri P AUID- ORCID: 0000-0002-1104-6237 AD - Universita Vita Salute San Raffaele, I-20132 Milano, Italy. FAU - Giordano, Antonio AU - Giordano A AUID- ORCID: 0000-0002-5959-016X AD - Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, PA 19122, USA. AD - Department of Medical Biotechnologies, University of Siena, I-53100 Siena, Italy. LA - eng PT - Journal Article PT - Observational Study DEP - 20200723 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (HLA-B44 Antigen) RN - 0 (HLA-C Antigens) SB - IM MH - COVID-19 MH - Coronavirus Infections/*epidemiology/*genetics/immunology MH - Gene Frequency MH - HLA-B44 Antigen/*genetics MH - HLA-C Antigens/*genetics MH - Humans MH - Italy/epidemiology MH - Pandemics MH - Pneumonia, Viral/*epidemiology/*genetics/immunology MH - Prevalence MH - Registries MH - Regression Analysis PMC - PMC7432860 OTO - NOTNLM OT - COVID-19 OT - HLA class I OT - SARS-Cov2 OT - coronavirus OT - viral infection susceptibility COIS- The authors declare no conflict of interest. EDAT- 2020/07/29 06:00 MHDA- 2020/08/13 06:00 PMCR- 2020/08/01 CRDT- 2020/07/29 06:00 PHST- 2020/06/04 00:00 [received] PHST- 2020/07/06 00:00 [revised] PHST- 2020/07/10 00:00 [accepted] PHST- 2020/07/29 06:00 [entrez] PHST- 2020/07/29 06:00 [pubmed] PHST- 2020/08/13 06:00 [medline] PHST- 2020/08/01 00:00 [pmc-release] AID - ijms21155205 [pii] AID - ijms-21-05205 [pii] AID - 10.3390/ijms21155205 [doi] PST - epublish SO - Int J Mol Sci. 2020 Jul 23;21(15):5205. doi: 10.3390/ijms21155205.