Endocrine and Growth Abnormalities in 4H Leukodystrophy Caused by Variants in POLR3A, POLR3B, and POLR1C.
Adolescent
Adult
Biological Variation, Population
Child
Child, Preschool
Cohort Studies
Cross-Sectional Studies
DNA-Directed RNA Polymerases
/ genetics
Endocrine System Diseases
/ epidemiology
Female
Genetic Heterogeneity
Growth Disorders
/ epidemiology
Hereditary Central Nervous System Demyelinating Diseases
/ complications
Humans
Hypogonadism
/ epidemiology
Infant
Infant, Newborn
Male
Mitochondrial Diseases
/ complications
Mutation
RNA Polymerase III
/ genetics
Retrospective Studies
Young Adult
4H leukodystrophy
POLR3-related leukodystrophy
hypogonadotropic hypogonadism
hypomyelination
Journal
The Journal of clinical endocrinology and metabolism
ISSN: 1945-7197
Titre abrégé: J Clin Endocrinol Metab
Pays: United States
ID NLM: 0375362
Informations de publication
Date de publication:
23 01 2021
23 01 2021
Historique:
received:
29
05
2020
pubmed:
3
10
2020
medline:
9
9
2021
entrez:
2
10
2020
Statut:
ppublish
Résumé
4H or POLR3-related leukodystrophy is an autosomal recessive disorder typically characterized by hypomyelination, hypodontia, and hypogonadotropic hypogonadism, caused by biallelic pathogenic variants in POLR3A, POLR3B, POLR1C, and POLR3K. The endocrine and growth abnormalities associated with this disorder have not been thoroughly investigated to date. To systematically characterize endocrine abnormalities of patients with 4H leukodystrophy. An international cross-sectional study was performed on 150 patients with genetically confirmed 4H leukodystrophy between 2015 and 2016. Endocrine and growth abnormalities were evaluated, and neurological and other non-neurological features were reviewed. Potential genotype/phenotype associations were also investigated. This was a multicenter retrospective study using information collected from 3 predominant centers. A total of 150 patients with 4H leukodystrophy and pathogenic variants in POLR3A, POLR3B, or POLR1C were included. Variables used to evaluate endocrine and growth abnormalities included pubertal history, hormone levels (estradiol, testosterone, stimulated LH and FSH, stimulated GH, IGF-I, prolactin, ACTH, cortisol, TSH, and T4), and height and head circumference charts. The most common endocrine abnormalities were delayed puberty (57/74; 77% overall, 64% in males, 89% in females) and short stature (57/93; 61%), when evaluated according to physician assessment. Abnormal thyroid function was reported in 22% (13/59) of patients. Our results confirm pubertal abnormalities and short stature are the most common endocrine features seen in 4H leukodystrophy. However, we noted that endocrine abnormalities are typically underinvestigated in this patient population. A prospective study is required to formulate evidence-based recommendations for management of the endocrine manifestations of this disorder.
Identifiants
pubmed: 33005949
pii: 5917135
doi: 10.1210/clinem/dgaa700
pmc: PMC7823228
doi:
Substances chimiques
DNA-Directed RNA Polymerases
EC 2.7.7.6
POLR1C protein, human
EC 2.7.7.6
POLR3A protein, human
EC 2.7.7.6
POLR3B protein, human
EC 2.7.7.6
RNA Polymerase III
EC 2.7.7.6
Types de publication
Journal Article
Multicenter Study
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e660-e674Subventions
Organisme : NINDS NIH HHS
ID : R01 NS082094
Pays : United States
Organisme : CIHR
ID : 201610PJT-377869
Pays : Canada
Organisme : CIHR
ID : MOP-G2-341146-159133-BRIDG
Pays : Canada
Organisme : CIHR
ID : 201603PJT-148695
Pays : Canada
Informations de copyright
© The Author(s) 2020. Published by Oxford University Press on behalf of the Endocrine Society.
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