POLD3 deficiency is associated with severe combined immunodeficiency, neurodevelopmental delay, and hearing impairment
Copyright © 2023 Elsevier Inc. All rights reserved.
| Veröffentlicht in: | Clinical immunology (Orlando, Fla.). - 1999. - 251(2023) vom: 08. Juni, Seite 109326 |
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| Weitere Verfasser: | , , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2023
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| Zugriff auf das übergeordnete Werk: | Clinical immunology (Orlando, Fla.) |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't DNA polymerase delta Hearing loss POLD3 Severe combined immunodeficiency Whole exome sequencing DNA Polymerase III EC 2.7.7.7 |
| Zusammenfassung: | Copyright © 2023 Elsevier Inc. All rights reserved. Combined immunodeficiency diseases (CID) represent the most severe forms of inborn errors of immunity. Defective T cell development and/or function, leading to an impairment in adaptive immunity are responsible for these diseases. The DNA polymerase δ complex is important for genome duplication and maintenance and consists of the catalytic subunit POLD1, and the accessory subunits POLD2 and POLD3 which stabilizes the complex. Mutations in POLD1 and POLD2 have been recently shown to be associated with a syndromic CID characterized by T cell lymphopenia with or without intellectual deficiency and sensorineural hearing loss. Here we report a homozygous POLD3 variant (NM_006591.3; p.Ile10Thr) in a Lebanese patient, the product of a consanguineous family, presenting with a syndromic severe combined immunodeficiency (SCID) with neurodevelopmental delay and hearing loss. The homozygous POLD3Ile10Thr variant abolishes POLD3 as well as POLD1 and POLD2 expression. Our findings implicate POLD3 deficiency as a novel cause of syndromic SCID |
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| Beschreibung: | Date Completed 23.05.2023 Date Revised 03.04.2024 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1521-7035 |
| DOI: | 10.1016/j.clim.2023.109326 |