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Rive Le Gouard N, Lafond-Rive V, Jonard L, Loundon N, Achard S, Heidet L, Mosnier I, Lyonnet S, Brioude F, Serey Gaut M, Marlin S. HDR syndrome: Large cohort and systematic review. Clin Genet 2024. [PMID: 38940299 DOI: 10.1111/cge.14583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 06/19/2024] [Accepted: 06/20/2024] [Indexed: 06/29/2024]
Abstract
HDR syndrome is a rare disease characterized by hypoparathyroidism, deafness, and renal dysplasia. An autosomal dominant disease caused by heterozygous pathogenic GATA3 variants, the penetrance of each associated condition is variable. Literature reviews have provided some answers, but many questions remain, in particular what the relationship is between genotype and phenotype. The current study examines 28 patients with HDR syndrome combined with an exhaustive review of the literature. Some conditions such as hearing loss are almost always present, while others described as rare initially, do not seem to be so rare after all (genital malformations and basal ganglia calcifications). By modeling pathogenic GATA3 variants found in HDR syndrome, we found that missense variations appear to always be located in the same area (close to the two Zinc Finger domain). We describe new pathogenic GATA3 variants, of which some seem to always be associated with certain conditions. Many audiograms were studied to establish a typical audiometric profile associated with a phenotype in HDR. As mentioned in the literature, hearing function should always be assessed as early as possible and follow up of patients with HDR syndrome should include monitoring of parathyroid function and vesicoureteral reflux in order to prevent complications.
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Affiliation(s)
- Nicolas Rive Le Gouard
- Centre de Référence «Surdités Génétiques», Fédération de Médecine Génomique; Hôpital Necker-Enfants Malades, AP-HP, Université de Paris Cité, Paris, France
- UF de Génomique Chromosomique, Département de Génétique médicale, Hôpital Armand Trousseau, AP-HP Sorbonne Université, Paris, France
- Laboratory of Embryology and Genetics of Malformations, Imagine Institute, INSERM UMR 1163, Université de Paris Cité, Paris, France
| | | | - Laurence Jonard
- Centre de Référence «Surdités Génétiques», Fédération de Médecine Génomique; Hôpital Necker-Enfants Malades, AP-HP, Université de Paris Cité, Paris, France
| | - Natalie Loundon
- Centre de Recherche en Audiologie (CREA), Hôpital Necker-Enfants Malades, AP-HP, Paris, France
- Service d'ORL Pédiatrique et de Chirurgie Cervico-Faciale, Hôpital Necker-Enfants Malades, AP-HP, Université de Paris Cité, Paris, France
| | - Sophie Achard
- Centre de Recherche en Audiologie (CREA), Hôpital Necker-Enfants Malades, AP-HP, Paris, France
- Service d'ORL Pédiatrique et de Chirurgie Cervico-Faciale, Hôpital Necker-Enfants Malades, AP-HP, Université de Paris Cité, Paris, France
| | - Laurence Heidet
- Service de Néphrologie Pédiatrique, Hôpital Necker-Enfants Malades, AP-HP, Université de Paris Cité, Paris, France
| | - Isabelle Mosnier
- Unité Fonctionnelle implants auditifs, Centre Référent Implant Cochléaire Adulte Ile de France, Centre Constitutif Maladies rares, Surdités génétiques de l'adulte, Hôpital Pitié-Salpetrière, AP-HP, Sorbonne Université, Paris, France
| | - Stanislas Lyonnet
- Laboratory of Embryology and Genetics of Malformations, Imagine Institute, INSERM UMR 1163, Université de Paris Cité, Paris, France
| | - Frederic Brioude
- Explorations Fonctionnelles Endocriniennes-Biologie Moléculaire, Hôpital des Enfants Armand Trousseau, AP-HP, Sorbonne Université, Paris, France
| | - Margaux Serey Gaut
- Centre de Référence «Surdités Génétiques», Fédération de Médecine Génomique; Hôpital Necker-Enfants Malades, AP-HP, Université de Paris Cité, Paris, France
- Centre de Recherche en Audiologie (CREA), Hôpital Necker-Enfants Malades, AP-HP, Paris, France
| | - Sandrine Marlin
- Centre de Référence «Surdités Génétiques», Fédération de Médecine Génomique; Hôpital Necker-Enfants Malades, AP-HP, Université de Paris Cité, Paris, France
- Laboratory of Embryology and Genetics of Malformations, Imagine Institute, INSERM UMR 1163, Université de Paris Cité, Paris, France
- Centre de Recherche en Audiologie (CREA), Hôpital Necker-Enfants Malades, AP-HP, Paris, France
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Yu S, Chen WX, Zhang YF, Chen C, Ni Y, Duan B, Wang H, Xu ZM. Recessive LOXHD1 variants cause a prelingual down-sloping hearing loss: genotype-phenotype correlation and three additional children with novel variants. Int J Pediatr Otorhinolaryngol 2021; 145:110715. [PMID: 33892339 DOI: 10.1016/j.ijporl.2021.110715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 03/06/2021] [Accepted: 04/08/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND Biallelic mutations in LOXHD1 have been identified as the cause of DFNB77 (deafness, autosomal recessive 77). It is a new progressive, severe-to-profound, and late-onset nonsyndromic sensorineural hearing loss (NSHL), and is highly heterogeneous genetically and phenotypically. This study aimed to provide an additional three cases of DFNB77. METHODS We presented three unrelated children diagnosed with prelingual mild-to-severe NSHL, and their audiograms showed mild hearing loss at 250 Hz before downsloping to a moderate-to-severe degree. Trio whole-exome sequencing (WES) was conducted to identify the pathogenic variants. Additionally, we reviewed the literature to further analyze the relationships between the genotype and audiology phenotype of LOXHD1. RESULTS Six novel possible pathogenic LOXHD1 variants were identified, including three missense, one nonsense, and two splicing variants. The literature review showed that 68.5% of patients with DFNB77 onset before five years old; Most variants (62%) were associated with a down-sloping audiogram of mild-to-moderate hearing loss at low frequencies (200Hz, 500Hz), particularly variants in the protein domain of PLAT 9. We found that compared with homozygous LOXHD1 variants, individuals with heterozygous compound variants had a significantly milder phenotype, especially individuals carrying one missense and one splicing or bi-allelic missense variants (P < 0.05). Audiometric analysis at different ages showed that the hearing loss degree was aggravated at all frequencies by increasing age. CONCLUSIONS We report three children with prelingual NSHL carrying six novel LOXHD1 variants. Furthermore, our work indicates that DFNB77 may be milder than previously reported and recommends considering the genotype combination and mutation location of LOXHD1 and race-specificity in DFNB77 molecular diagnoses and management.
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Affiliation(s)
- Sha Yu
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Wen-Xia Chen
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Yun-Fei Zhang
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Chao Chen
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Yihua Ni
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Bo Duan
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Huijun Wang
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China.
| | - Zheng-Min Xu
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China.
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Yu S, Chen W, Lu W, Chen C, Ni Y, Duan B, Wang B, Wang H, Xu Z. Novel heterozygous GATA3 and SLC34A3 variants in a 6-year-old boy with Barakat syndrome and hypercalciuria. Mol Genet Genomic Med 2020; 8:e1222. [PMID: 32155322 PMCID: PMC7216807 DOI: 10.1002/mgg3.1222] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 02/19/2020] [Accepted: 02/24/2020] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Barakat syndrome is an autosomal dominant disorder characterized by the triad of hypoparathyroidism, sensorineural deafness, and renal anomalies and is caused by mutations in GATA3 gene. SLC34A3 is the cause gene of hypophosphatemic rickets with hypercalciuria, and heterozygous carriers may have milder clinical symptoms. The aim of this study was to identify the underlying genetic cause of a patient who initially presented with renal failure, hypercalciuria, kidney stone, and bilateral sensorineural deafness. METHODS A 6-year-old boy with complex clinical presentations was investigated. Comprehensive medical evaluations were performed including auditory function tests, endocrine function tests, metabolic studies, and imaging examinations. Molecular diagnoses were analyzed by trio whole-exome sequencing. RESULTS One novel de novo deleterious variant (c. 324del) of the GATA3 gene was identified in the patient. The patient can be diagnosed with Barakat syndrome. In addition, one novel variant (c. 589A>G) of the SLC34A3 gene was detected, which was inherited from the father. This heterozygous variant can explain the hypercalciuria and kidney stone that occurred in both the patient and his father. CONCLUSION This study provides a special case which is phenotype-driven dual diagnoses, and the two novel variants can parsimoniously explain the complex clinical presentations of this patient.
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Affiliation(s)
- Sha Yu
- Department of Otolaryngology‐Head and Neck SurgeryChildren’s Hospital of Fudan UniversityShanghaiChina
- Center for Molecular MedicinePediatrics Research InstituteChildren’s Hospital of Fudan UniversityShanghaiChina
| | - Wen‐xia Chen
- Department of Otolaryngology‐Head and Neck SurgeryChildren’s Hospital of Fudan UniversityShanghaiChina
| | - Wei Lu
- Endocrinology and Inherited Metabolic DiseasesChildren’s Hospital of Fudan UniversityShanghaiChina
| | - Chao Chen
- Department of Otolaryngology‐Head and Neck SurgeryChildren’s Hospital of Fudan UniversityShanghaiChina
| | - Yihua Ni
- Department of Otolaryngology‐Head and Neck SurgeryChildren’s Hospital of Fudan UniversityShanghaiChina
| | - Bo Duan
- Department of Otolaryngology‐Head and Neck SurgeryChildren’s Hospital of Fudan UniversityShanghaiChina
| | - Bin Wang
- Department of Otolaryngology‐Head and Neck SurgeryChildren’s Hospital of Fudan UniversityShanghaiChina
| | - Huijun Wang
- Center for Molecular MedicinePediatrics Research InstituteChildren’s Hospital of Fudan UniversityShanghaiChina
| | - Zheng‐min Xu
- Department of Otolaryngology‐Head and Neck SurgeryChildren’s Hospital of Fudan UniversityShanghaiChina
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