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Epidemiological shift of glucose-6-phosphate dehydrogenase mutations in northern Italy in the last 15 years

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Abstract

Glucose-6-phosphate dehydrogenase (G6PD) deficiency is an X-linked recessive hemolytic anemia caused by mutations in G6PD gene. The distribution and frequency of genetic variants differ depending on ethnicity and geographical areas. Because of new migrations different variants are now present in Europe. This retrospective study aims to identify variants among the G6PD deficient subjects referred since 2004 to IRCCS Ca’ Granda Foundation Hospital in Milan. The subjects were divided into 3 groups: group 1 (2004–2008), group 2 (2009–2013), and group 3 (2014–2018). During 15 years a significant decrease of the Mediterranean and an important increase of the African, Asian, and uncommon variants (classified as Others) have been observed. Three new mutations were found: in group 2 heterozygosity for c.[1454G > A] (Gly485Asp) in an adult female with severe anemia, high bilirubin levels and G6PD activity of 0,69 (IU/gHb) and heterozygosity for c.[584A > G] (Gln195Arg) in an elderly woman of Italian origin showing only anemia and enzymatic activity of 1,54 (IU/gHb) were detected. In group 3 hemizygosity for c.[670A > T] (Ile224Phe) in an adult Chinese man without anemia but with total absence of G6PD activity was found. These data reflect the appearance of uncommon G6PD mutations in northern Italy, probably due to new migrations, as consequence G6PD characterization becomes a diagnostic issue.

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Authors and Affiliations

  1. Department of Medicine and Medical Specialties, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy

    Lorena Duca, Isabella Nava & Giovanna Graziadei

  2. Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy

    Dario Tavazzi, Alessia Marcon & Irene Motta

Authors
  1. Lorena Duca
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  2. Isabella Nava
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  3. Dario Tavazzi
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  4. Alessia Marcon
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  5. Irene Motta
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  6. Giovanna Graziadei
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Correspondence to Lorena Duca.

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Duca, L., Nava, I., Tavazzi, D. et al. Epidemiological shift of glucose-6-phosphate dehydrogenase mutations in northern Italy in the last 15 years. Ann Hematol 100, 2683–2688 (2021). https://doi.org/10.1007/s00277-021-04630-9

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  • DOI: https://doi.org/10.1007/s00277-021-04630-9

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