Leukodystrophy, Hypomyelinating, 8, With Or Without Oligodontia And/or Hypogonadotropic Hypogonadism; Hld8
Description
Hypomyelinating leukodystrophy-8 is an autosomal recessive neurologic disorder characterized by early childhood onset of cerebellar ataxia and mild intellectual disabilities associated with diffuse hypomyelination apparent on brain MRI. Variable features include oligodontia and/or hypogonadotropic hypogonadism (summary by Tetreault et al., 2011).See also HLD7 (OMIM ), which has similar features and is caused by mutation in the POLR3A gene (OMIM ) on chromosome 10q22. The POLR3A and POLR3B genes encode the 2 largest subunits of RNA polymerase III.For a general phenotypic description and a discussion of genetic heterogeneity of hypomyelinating leukodystrophy, see {312080}.
Genes related to Leukodystrophy, Hypomyelinating, 8, With Or Without Oligodontia And/or Hypogonadotropic Hypogonadism; Hld8
- POLR3B
 
Clinical Features
Top most frequent phenotypes and symptoms related to Leukodystrophy, Hypomyelinating, 8, With Or Without Oligodontia And/or Hypogonadotropic Hypogonadism; Hld8
- Intellectual disability
 - Short stature
 - Generalized hypotonia
 - Ataxia
 - Nystagmus
 - Spasticity
 - Hyperreflexia
 - Dysarthria
 - Myopia
 - Dysphagia
 
And another 24 symptoms. If you need more information about this disease we can help you.
Incidence and onset information
— Currently we don't have prevalence information about this disease (Not enough data available about incidence and published cases.)— No data available about the known clinical features onset.
Researches and researchers
Currently, we don't have any information about doctors, researches or researchers related to this disease. Please contact us if you would like to appear here.Leukodystrophy, Hypomyelinating, 8, With Or Without Oligodontia And/or Hypogonadotropic Hypogonadism; Hld8 Recommended genes panels
| Panel Name, Specifity and genes Tested/covered | 
|---|
 	Ataxia Exome Panel.
By Genetic Services Laboratory University of Chicago (United States). 
BCS1L, RTN2, SACS, SCN1A, SCN2A, SCN8A, SCO1, SDHA, SDHD, SLC16A2, SLC17A5, SLC19A2, SLC1A3, SLC20A2, SLC2A1, SLC6A1, SLC9A1, SLC9A6, SNAP25, SOD1	, (...)
 
View the complete list with 457 more genes 
Specificity
 
1 % 
Genes
 
100 %  | 
 	POLIII- Related Leukodystrophies.
By Molecular Diagnostics Lab Nemours Alfred I. duPont Hospital for Children (United States). 
POLR3A, POLR3B
 
Specificity
 
50 % 
Genes
 
100 %  | 
 	POLR3B. Complete sequencing.
By Instituto de Medicina Genomica Instituto de Medicina Genomica (Spain). 
POLR3B
 
Specificity
 
100 % 
Genes
 
100 %  | 
 	Leukodystrophy hypomyelinating type 8 (sequence analysis of POLR3B gene).
By CGC Genetics (Portugal). 
POLR3B
 
Specificity
 
100 % 
Genes
 
100 %  | 
 	Leukodystrophy hypomyelinating (NGS panel for 3 genes).
By CGC Genetics (Portugal). 
TUBB4A, POLR3A, POLR3B
 
Specificity
 
34 % 
Genes
 
100 %  | 
 	Leukodystrophy and Leukoencephalopathy Sequencing Panel with CNV Detection.
By PreventionGenetics PreventionGenetics (United States). 
SCP2, AIMP1, SDHB, SLC16A2, SLC17A5, SLC25A1, SLC25A12, SLC25A4, SOX10, SPG11, SPG7, SUCLA2, SURF1, TWNK, ACOX1, TREX1, TUFM, TYROBP, WARS2, MCOLN1	, (...)
 
View the complete list with 135 more genes 
Specificity
 
1 % 
Genes
 
100 %  | 
 	Mental retardation - different panels.
By Institute of Human Genetics Uniklinik RWTH Aachen (Germany). 
RGS7, RIT1, RMRP, BCS1L, RPL10, RPS6KA3, RRAS, SALL1, SC5D, ATXN10, BLM, SCN1A, SCN2A, SCN8A, SCO2, AIMP1, SDCCAG8, SDHA, SDHB, SGSH	, (...)
 
View the complete list with 845 more genes 
Specificity
 
1 % 
Genes
 
100 %  | 
 	Epilepsy and Hypomyelination.
By MGZ Medical Genetics Center (Germany). 
SPTAN1, TUBB4A, FAM126A, POLR3A, POLR3B, EIF2B3, FOLR1, PLP1
 
Specificity
 
13 % 
Genes
 
100 %  | 
You can get up to 21 more panels with our dedicated tool
Learn moreSources and references
You can check the following sources for additional information.
OMIM Rare Disease Search EngineIf you liked this article maybe you will also find interesting the following in-depth articles about other rare diseases, like 3-HYDROXY-3-METHYLGLUTARYL-CoA LYASE DEFICIENCY; HMGCLD LIDDLE SYNDROME; LIDLS IMMUNODEFICIENCY 32A; IMD32A MENTAL RETARDATION, X-LINKED, WITH PANHYPOPITUITARISM NEUTROPENIA, SEVERE CONGENITAL, 7, AUTOSOMAL RECESSIVE; SCN7 MENTAL RETARDATION, AUTOSOMAL DOMINANT 27; MRD27
	Ataxia Exome Panel.
	POLR3B. Complete sequencing.
	Leukodystrophy hypomyelinating type 8 (sequence analysis of POLR3B gene).
	Mental retardation - different panels.