Whole genome sequencing in families with oligodontia.

Autor: Mitscherling J; Department of Orthodontics and Dentofacial Orthopedics, Charité - Centrum 03 für Zahn-, Mund- und Kieferheilkunde, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, und Berlin Institute of Health, Berlin, Germany., Sczakiel HL; Institute of Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.; BIH Biomedical Innovation Academy, Junior Clinician Scientist Program, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany.; RG Development & Disease, Max Planck Institute for Molecular Genetics, Berlin, Germany., Kiskemper-Nestorjuk O; Department of Orthodontics and Dentofacial Orthopedics, Charité - Centrum 03 für Zahn-, Mund- und Kieferheilkunde, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, und Berlin Institute of Health, Berlin, Germany., Winterhalter S; Department of Ophthalmology, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany., Mundlos S; Institute of Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.; RG Development & Disease, Max Planck Institute for Molecular Genetics, Berlin, Germany., Bartzela T; Department of Orthodontics and Dentofacial Orthopedics, Charité - Centrum 03 für Zahn-, Mund- und Kieferheilkunde, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, und Berlin Institute of Health, Berlin, Germany.; Department of Orthodontics, Technische Universität Dresden, Dresden, Germany., Mensah MA; Institute of Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.; RG Development & Disease, Max Planck Institute for Molecular Genetics, Berlin, Germany.; BIH Biomedical Innovation Academy, Digital Clinician Scientist Program, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany.
Jazyk: angličtina
Zdroj: Oral diseases [Oral Dis] 2024 Sep; Vol. 30 (6), pp. 3935-3950. Date of Electronic Publication: 2023 Dec 09.
DOI: 10.1111/odi.14816
Abstrakt: Background/objectives: Tooth agenesis (TA) is among the most common malformations in humans. Although several causative mutations have been described, the genetic cause often remains elusive. Here, we test whether whole genome sequencing (WGS) could bridge this diagnostic gap.
Methods: In four families with TA, we assessed the dental phenotype using the Tooth Agenesis Code after intraoral examination and radiographic and photographic documentation. We performed WGS of index patients and subsequent segregation analysis.
Results: We identified two variants of uncertain significance (a potential splice variant in PTH1R, and a 2.1 kb deletion abrogating a non-coding element in FGF7) and three pathogenic variants: a novel frameshift in the final exon of PITX2, a novel deletion in PAX9, and a known nonsense variant in WNT10A. Notably, the FGF7 variant was found in the patient, also featuring the WNT10A variant. While mutations in PITX2 are known to cause Axenfeld-Rieger syndrome 1 (ARS1) predominantly featuring ocular findings, accompanied by dental malformations, we found the PITX2 frameshift in a family with predominantly dental and varying ocular findings.
Conclusion: Severe TA predicts a genetic cause identifiable by WGS. Final exon PITX2 frameshifts can cause a predominantly dental form of ARS1.
(© 2023 The Authors. Oral Diseases published by Wiley Periodicals LLC.)
Databáze: MEDLINE
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