Clinical, neuroimaging, and molecular spectrum of TECPR2-associated hereditary sensory and autonomic neuropathy with intellectual disability.
Adolescent
Carrier Proteins
/ chemistry
Child
Child, Preschool
Cohort Studies
Cross-Sectional Studies
Family
Female
Hereditary Sensory and Autonomic Neuropathies
/ complications
Humans
Infant
Intellectual Disability
/ complications
Magnetic Resonance Imaging
Male
Models, Molecular
Mutation, Missense
Nerve Tissue Proteins
/ chemistry
Neuroimaging
/ methods
Pedigree
Phenotype
Protein Conformation
Human Phenotype Ontology
TECPR2
neurodevelopmental disorder
sensory autonomic neuropathy
spastic paraplegia
Journal
Human mutation
ISSN: 1098-1004
Titre abrégé: Hum Mutat
Pays: United States
ID NLM: 9215429
Informations de publication
Date de publication:
06 2021
06 2021
Historique:
revised:
18
03
2021
received:
19
10
2020
accepted:
08
04
2021
pubmed:
14
4
2021
medline:
29
1
2022
entrez:
13
4
2021
Statut:
ppublish
Résumé
Bi-allelic TECPR2 variants have been associated with a complex syndrome with features of both a neurodevelopmental and neurodegenerative disorder. Here, we provide a comprehensive clinical description and variant interpretation framework for this genetic locus. Through international collaboration, we identified 17 individuals from 15 families with bi-allelic TECPR2-variants. We systemically reviewed clinical and molecular data from this cohort and 11 cases previously reported. Phenotypes were standardized using Human Phenotype Ontology terms. A cross-sectional analysis revealed global developmental delay/intellectual disability, muscular hypotonia, ataxia, hyporeflexia, respiratory infections, and central/nocturnal hypopnea as core manifestations. A review of brain magnetic resonance imaging scans demonstrated a thin corpus callosum in 52%. We evaluated 17 distinct variants. Missense variants in TECPR2 are predominantly located in the N- and C-terminal regions containing β-propeller repeats. Despite constituting nearly half of disease-associated TECPR2 variants, classifying missense variants as (likely) pathogenic according to ACMG criteria remains challenging. We estimate a pathogenic variant carrier frequency of 1/1221 in the general and 1/155 in the Jewish Ashkenazi populations. Based on clinical, neuroimaging, and genetic data, we provide recommendations for variant reporting, clinical assessment, and surveillance/treatment of individuals with TECPR2-associated disorder. This sets the stage for future prospective natural history studies.
Substances chimiques
Carrier Proteins
0
Nerve Tissue Proteins
0
TECPR2 protein, human
0
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Systematic Review
Langues
eng
Sous-ensembles de citation
IM
Pagination
762-776Subventions
Organisme : NHGRI NIH HHS
ID : UM1 HG006542
Pays : United States
Organisme : NHGRI NIH HHS
ID : K08 HG008986
Pays : United States
Organisme : NHGRI NIH HHS
ID : U54 HG006542
Pays : United States
Informations de copyright
© 2021 The Authors. Human Mutation published by Wiley Periodicals LLC.
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