Qualquer leucodistrofia em que a causa da doença seja uma mutação no gene VPS11.
Introdução
O que você precisa saber de cara
Qualquer leucodistrofia em que a causa da doença seja uma mutação no gene VPS11.
Escala de raridade
<1/50kMuito rara
1/20kRara
1/10kPouco freq.
1/5kIncomum
1/2k
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Sinais e sintomas
O que aparece no corpo e com que frequência cada sintoma acontece
Partes do corpo afetadas
+ 10 sintomas em outras categorias
Características mais comuns
Os sintomas variam de pessoa para pessoa. Abaixo estão as 38 características clínicas mais associadas, ordenadas por frequência.
Linha do tempo da pesquisa
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Genética e causas
O que está alterado no DNA e como passa nas famílias
Genes associados
1 gene identificado com associação a esta condição. Padrão de herança: Autosomal recessive.
Plays a role in vesicle-mediated protein trafficking to lysosomal compartments including the endocytic membrane transport and autophagic pathways. Believed to act as a core component of the putative HOPS and CORVET endosomal tethering complexes which are proposed to be involved in the Rab5-to-Rab7 endosome conversion probably implicating MON1A/B, and via binding SNAREs and SNARE complexes to mediate tethering and docking events during SNARE-mediated membrane fusion. The HOPS complex is proposed
EndosomeLate endosome membraneLysosome membraneEarly endosomeCytoplasmic vesicleCytoplasmic vesicle, autophagosomeCytoplasmic vesicle, clathrin-coated vesicle
Leukodystrophy, hypomyelinating, 12
An autosomal recessive neurologic disorder characterized by developmental delay, spasticity, truncal hypotonia, acquired microcephaly, intellectual disability with variable seizure disorder, accompanied by thin corpus callosum, paucity of white matter and delayed myelination.
Variantes genéticas (ClinVar)
38 variantes patogênicas registradas no ClinVar.
Vias biológicas (Reactome)
1 via biológica associada aos genes desta condição.
Diagnóstico
Os sinais que médicos procuram e os exames que confirmam
Tratamento e manejo
Remédios, cuidados de apoio e o que precisa acompanhar
Onde tratar no SUS
Hospitais de referência no Brasil e o protocolo oficial do SUS (PCDT)
🇧🇷 Atendimento SUS — Leucodistrofia hipomielinizante autossômica recessiva VPS11-relacionada
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Dados de DATASUS/CNES, SBGM, ABNeuro e Ministério da Saúde. Sempre confirme a disponibilidade diretamente com o estabelecimento.
Pesquisa ativa
Ensaios clínicos abertos e novidades científicas recentes
Pesquisa e ensaios clínicos
Nenhum ensaio clínico registrado para esta condição.
Publicações mais relevantes
Adult-onset vanishing white matter disease caused by the EIF2B5 c.185A>T (p.Asp62Val) variant.
Vanishing white matter disease (VWMD; OMIM 603896), also known as childhood ataxia with central nervous system hypomyelination (CACH), is a rare autosomal recessive leukodystrophy caused by pathogenic variants in the EIF2B gene family (EIF2B1-EIF2B5). Clinical manifestations are highly heterogeneous, with onset ranging from fetal life to adulthood; adult-onset cases remain relatively rare and often present with atypical symptoms. Brain magnetic resonance imaging (MRI) and genetic testing are pivotal for diagnosis. We report a 32-year-old Chinese female with adult-onset VWMD characterized by intermittent headaches, progressive cognitive decline, menstrual irregularities, and hearing loss. Cranial MRI with diffusion-weighted imaging (DWI) revealed symmetrical periventricular and centrum semiovale white matter abnormalities. Whole-exome sequencing (WES) identified a homozygous missense variant in the EIF2B5 gene, formatted per Human Genome Variation Society (HGVS) guidelines as NM_001414.4:c.185A>T (p.Asp62Val). This variant was previously documented exclusively in a pediatric patient, representing the first report in an adult. Our case expands the phenotypic and age-related spectrum of EIF2B5-associated VWMD, highlighting that the c.185A>T variant is capable of manifesting in adulthood with non-classical features (e.g., headache as the initial symptom). Prior studies have confirmed that this variant impairs EIF2B complex function, which reinforces its pathogenic role in disrupting the integrated stress response (ISR) and maintaining white matter homeostasis. A literature review of 99 genetically confirmed adult-onset VWMD cases further underscores genotype-phenotype correlations: EIF2B5 is the most frequently mutated subunit in adult patients, with cerebellar ataxia, cognitive decline, and psychiatric symptoms as the predominant initial manifestations. Female patients often present with premature ovarian failure, a key diagnostic hallmark. Early genetic testing is crucial for definitive diagnosis, prenatal counseling, and symptomatic management. Notably, this study has limitations, including the lack of investigation into gene-gene interactions-factors that may modulate disease severity and phenotypic variability-and the unavailability of parental genetic data to fully validate zygosity.
A novel splice site variant in DEGS1 leads to aberrant splicing and loss of DEGS1 enzyme activity, a VUS resolved.
Pathogenic DEGS1 variants have been reported in individuals with autosomal recessive hypomyelinating leukodystrophy 18 (HLD18; MIM# 618404). We sought to resolve a 5' +4/+5 splice site variant of uncertain significance found in three individuals with HLD features. We used next-generation DNA and transcriptome sequencing, cell-based splicing assays, and tandem mass spectrometry to detect and characterize the splice site variant. We then performed RNA structure probing and conventional antisense oligonucleotide screening to investigate molecular mechanisms for potential therapeutic intervention. A homozygous, DEGS1 5' splice site variant, c.825+4_825+5delAGinsTT (NM_003676.4) was identified in all three participants. Although the gene has been associated with autosomal recessive hypomyelinating leukodystrophy, the variant has not been previously reported in any available databases or literature. We show that the splice site variant: 1) was sufficient to induce exon two skipping in most detected transcripts; 2) resulted in structural changes to the 5' and 3' splice site regions using RNA structure probing; and 3) corresponds to plasma sphingolipid profiles consistent with loss of sphingolipid delta(4)-desaturase activity. Our RNA and lipidomic evidence proved that the DEGS1 variant c.825+4_825+5delAGinsTT is pathogenic and suggested a mechanistic model to explain how exon two skipping is induced.
Neuropsychological profile of POLR3A-related spastic ataxia.
POLR3-related disorders are a group of autosomal recessive neurodegenerative diseases that usually cause leukodystrophy and can lead to cognitive dysfunction. Literature reporting comprehensive neuropsychological assessment in POLR3A-related diseases is sparse. Here we describe the neuropsychological profile of a case of childhood-onset POLR3A-related spastic ataxia without leukodystrophy. Extensive neuropsychological assessment covering the domains of attention, executive function, memory, language, visuospatial processing and social cognition in a patient with a compound heterozygous POLR3Amutation (c.2000T>A (p.Leu667*) / c.1909+22G>A) and a spastic ataxic phenotype. Neuropsychological testing showed a marked slowing of basic information processing (reading, colour naming on Stroop test), executive deficits (alternating attention through Letter-Digit Substitution Test and semantic word fluency) and social cognition impairment (facial emotion recognition via Facial Expressive Action Stimulus Test, intention and emotion attribution via Story-based Empathy Task). While originally described as a typical hypomyelination disorder, leukodystrophy nor striatal lesions seem pivotal to cognitive dysfunction in POLR3-related disease, as demonstrated in this patient. Further investigation of a larger cohort of (c.1909 + 22G>A) heterozygous patients is warranted to reveal which neuropsychological features correspond to this less aggressive phenotype.
Hypomyelination With Congenital Cataract: A Rare Genetic Leukodystrophy.
Hypomyelination and congenital cataract (HCC) is a rare autosomal recessive disorder characterized by a triad of bilateral cataracts, neurological impairment, and diffuse cerebral hypomyelination. We report a case of a child, born of a consanguineous marriage, who presented with tremors and delayed motor abilities. Clinical examination revealed bilateral lamellar cataracts and microcephaly. MRI brain demonstrated diffuse white matter hypomyelination. The patient underwent cataract surgery with intraocular lens implantation and was managed with supportive rehabilitation. This case highlights the importance of early recognition of ophthalmic manifestations of systemic neurogenetic disorders, the diagnostic role of neuroimaging and genetic testing, and the necessity of multidisciplinary management.
POLR3B-Related Hypomyelinating Leukodystrophy Type 8 (4H Syndrome): A Case Series of Two Siblings.
We present a case series of two siblings from a consanguineous family with genetically confirmed POLR3B-related hypomyelinating leukodystrophy type 8 (4H syndrome), a rare autosomal recessive disorder characterized by hypomyelination, hypodontia, and hypogonadotropic hypogonadism. Despite sharing the same homozygous mutation, the siblings exhibited distinct clinical phenotypes, with the older child presenting with severe motor dysfunction, optic disc pallor, and requiring orthopedic surgery, while the younger maintained independent ambulation with milder neurological symptoms. Both exhibited high myopia and developmental delay, highlighting the multisystem nature of the disease.
Publicações recentes
De novo variants in KDM2A cause a syndromic neurodevelopmental disorder.
Movement disorder phenotype in CTNNB1-syndrome: A complex but recognizable phenomenology.
Further delineation of Wiedemann-Rautenstrauch syndrome linked with POLR3A.
Mucopolysaccharidosis-Plus Syndrome, a Rapidly Progressive Disease: Favorable Impact of a Very Prolonged Steroid Treatment on the Clinical Course in a Child.
Cerebral folate transporter deficiency syndrome in three siblings: Why genetic testing for developmental and epileptic encephalopathies should be performed early and include the FOLR1 gene.
📚 EuropePMCmostrando 67
Adult-onset vanishing white matter disease caused by the EIF2B5 c.185A>T (p.Asp62Val) variant.
Frontiers in geneticsHypomyelination With Congenital Cataract: A Rare Genetic Leukodystrophy.
CureusPOLR3B-Related Hypomyelinating Leukodystrophy Type 8 (4H Syndrome): A Case Series of Two Siblings.
CureusSHQ1-related hypomyelinating leukodystrophy: A case report with imaging features and a homozygous variant.
Radiology case reportsCochlear implantation in Childhood Ataxia with Central nervous system Hypomyelination Syndrome.
Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of IndiaBiallelic ELOVL1 Variants Are Linked to Hypomyelinating Leukodystrophy, Movement Disorder, and Ichthyosis.
Movement disorders : official journal of the Movement Disorder SocietyDeletion Testing of the DEGS1 Gene Should Be Part of the Diagnostic Pipeline for Hypomyelinating Leukodystrophy (HLD18).
Human mutationA novel splice site variant in DEGS1 leads to aberrant splicing and loss of DEGS1 enzyme activity, a VUS resolved.
medRxiv : the preprint server for health sciencesBi-allelic variants in BRF2 are associated with perinatal death and craniofacial anomalies.
Genome medicineNeuropsychological profile of POLR3A-related spastic ataxia.
Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical NeurophysiologyFirst description of novel compound heterozygous mutations in HYCC1: clinical evaluations and molecular analysis in patient with hypomyelinating leukodystrophy-5 with retrospective view.
Journal of human geneticsAssessment the Efficacy of the CRISPR System for Inducing Mutations in the AIMP2 Gene to Create a Cell Line Model of HLD17 Disease.
Molecular biotechnologyInherited white matter disorders: Hypomyelination (myelin disorders).
Handbook of clinical neurologyDevelopmental Delay, Hypomyelination, and Nystagmus: Case and Approach.
Neuro-ophthalmology (Aeolus Press)A novel missense variant in HIKESHI: Clinical phenotype, in vitro functional testing, and potential for gene therapy.
American journal of medical genetics. Part AHomozygous EPRS1 missense variant causing hypomyelinating leukodystrophy-15 alters variant-distal mRNA m6A site accessibility.
Nature communicationsIn silico characterization and identification of compound heterozygous variants in H/ACA Ribonucleoprotein Assembly Factor (SHQ1) from Indian population.
Journal of family medicine and primary care4-aminopyridine improves evoked potentials and ambulation in the taiep rat: A model of hypomyelination with atrophy of basal ganglia and cerebellum.
PloS oneCase report: Neuropsychological assessment in a patient with 4H leukodystrophy.
The Clinical neuropsychologistA Chinese patient with POLR3A-related leukodystrophy: a case report and literature review.
Frontiers in neurologyHypomyelination caused by a novel homozygous pathogenic variant in FOLR1: complete clinical and radiological recovery with oral folinic acid therapy and review of the literature.
Orphanet journal of rare diseasesAdult-Onset White Matter Vanishing Disease With Ovarian Failure in a Salvadoran Patient.
CureusCraniofacial features of POLR3-related leukodystrophy caused by biallelic variants in POLR3A, POLR3B and POLR1C.
Journal of medical geneticsHypomyelinating Leukodystrophy 10 (HLD10)-Associated Mutations of PYCR2 Form Large Size Mitochondria, Inhibiting Oligodendroglial Cell Morphological Differentiation.
Neurology internationalA rare case of hypomyelinating leukodystrophy-14 benefiting from ketogenic diet therapy.
The Turkish journal of pediatricsA novel mutation in GJC2 associated with hypomyelinating leukodystrophy type 2 disorder.
Genomics & informaticsA novel variant of the POLR3A gene in a patient with hypomyelinating POLR3-related leukodystrophy.
Clinica chimica acta; international journal of clinical chemistryThe First Korean Siblings With Adult-Onset 4H Leukodystrophy Related to Nonsynonymous POLR3B Mutations.
Neurology. GeneticsHypomyelinating Leukodystrophy 8 (HLD8)-Associated Mutation of POLR3B Leads to Defective Oligodendroglial Morphological Differentiation Whose Effect Is Reversed by Ibuprofen.
Neurology internationalHypomyelinating Leukodystrophy 7 (HLD7)-Associated Mutation of POLR3A Is Related to Defective Oligodendroglial Cell Differentiation, Which Is Ameliorated by Ibuprofen.
Neurology internationalPelizaeus-Merzbacher-Like Disease 1 Caused by a Novel Mutation in GJC2 Gene: A Case Report.
Iranian journal of medical sciencesKnockdown of Golgi Stress-Responsive Caspase-2 Ameliorates HLD17-Associated AIMP2 Mutant-Mediated Inhibition of Oligodendroglial Cell Morphological Differentiation.
Neurochemical researchHypomyelination and Congenital Cataract: Clinical, Imaging, and Genetic Findings in Three Tunisian Families and Literature Review.
NeuropediatricsExpanding the genotypic spectrum of PYCR2 and a common ancestry in Thai patients with hypomyelinating leukodystrophy 10.
American journal of medical genetics. Part AProgress in elucidating pathophysiology of mucolipidosis IV.
Neuroscience lettersHypomyelinating Leukodystrophy 15 (HLD15)-Associated Mutation of EPRS1 Leads to Its Polymeric Aggregation in Rab7-Positive Vesicle Structures, Inhibiting Oligodendroglial Cell Morphological Differentiation.
PolymersA hypomyelinating leukodystrophy in German Shepherd dogs.
Journal of veterinary internal medicineNovel Mutations in NPC1 are Associated with Pelizaeus-Merzbacher-Like Disease: A Case Report.
International journal of general medicineCase Report: Severe Osteoporosis and Preventive Therapy in RNA Polymerase III-Related Leukodystrophy.
Frontiers in neurologyEndocrine and Growth Abnormalities in 4H Leukodystrophy Caused by Variants in POLR3A, POLR3B, and POLR1C.
The Journal of clinical endocrinology and metabolismA recurrent de novo HSPD1 variant is associated with hypomyelinating leukodystrophy.
Cold Spring Harbor molecular case studiesIdentification of a deep intronic POLR3A variant causing inclusion of a pseudoexon derived from an Alu element in Pol III-related leukodystrophy.
Journal of human genetics4H leukodystrophy caused by a homozygous POLR3B mutation: Further delineation of the phenotype.
American journal of medical genetics. Part APP1C and PP2A are p70S6K Phosphatases Whose Inhibition Ameliorates HLD12-Associated Inhibition of Oligodendroglial Cell Morphological Differentiation.
BiomedicinesExpanding the clinical and neuroimaging features of NKX6-2-related hereditary spastic ataxia type 8.
European journal of medical geneticsRecessive Ataxia Differential Diagnosis Algorithm (RADIAL) Versus Specific Niemann-Pick Type C Suspicion Indices: A Retrospective Algorithm Comparison.
Cerebellum (London, England)An update on clinical, pathological, diagnostic, and therapeutic perspectives of childhood leukodystrophies.
Expert review of neurotherapeuticsCompound heterozygous mutations in SNAP29 is associated with Pelizaeus-Merzbacher-like disorder (PMLD).
Human geneticsHypomyelinating leukodystrophy-associated mutation of RARS leads it to the lysosome, inhibiting oligodendroglial morphological differentiation.
Biochemistry and biophysics reportsGenetic and phenotypic characterization of NKX6-2-related spastic ataxia and hypomyelination.
European journal of neurologyNovel POLR1C mutation in RNA polymerase III-related leukodystrophy with severe myoclonus and dystonia.
Molecular genetics & genomic medicineA study in a Polish ataxia cohort indicates genetic heterogeneity and points to MTCL1 as a novel candidate gene.
Clinical geneticsBi-allelic POLR3A Loss-of-Function Variants Cause Autosomal-Recessive Wiedemann-Rautenstrauch Syndrome.
American journal of human geneticsA novel homozygous mutation in POLR3A gene causing 4H syndrome: a case report.
BMC pediatricsExpanding the clinical and genetic spectra of NKX6-2-related disorder.
Clinical geneticsCerebellar hypoplasia with endosteal sclerosis is a POLR3-related disorder.
European journal of human genetics : EJHGMutations in NKX6-2 Cause Progressive Spastic Ataxia and Hypomyelination.
American journal of human genetics4H Leukodystrophy: A Brain Magnetic Resonance Imaging Scoring System.
NeuropediatricsHypomorphic mutations in POLR3A are a frequent cause of sporadic and recessive spastic ataxia.
Brain : a journal of neurologyGene therapy targeting oligodendrocytes provides therapeutic benefit in a leukodystrophy model.
Brain : a journal of neurologySevere leukoencephalopathy with cortical involvement and peripheral neuropathy due to FOLR1 deficiency.
Brain & developmentNeonatal progeriod syndrome associated with biallelic truncating variants in POLR3A.
American journal of medical genetics. Part AHypomyelinating Leukodystrophy due to HSPD1 Mutations: A New Patient.
NeuropediatricsPYCR2 Mutations cause a lethal syndrome of microcephaly and failure to thrive.
Annals of neurologyEndocrine Aspects of 4H Leukodystrophy: A Case Report and Review of the Literature.
Case reports in endocrinologyExome sequencing reveals a novel WDR45 frameshift mutation and inherited POLR3A heterozygous variants in a female with a complex phenotype and mixed brain MRI findings.
European journal of medical geneticsBRF1 mutations alter RNA polymerase III-dependent transcription and cause neurodevelopmental anomalies.
Genome researchAssociações
Organizações que acompanham esta doença — pra ter apoio e orientação
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Comunidades
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Referências e fontes
Bases de dados externas citadas neste artigo
Publicações científicas
Artigos indexados no PubMed ligados a esta doença no grafo RarasNet — título, periódico e PMID direto da fonte, sem intermediação de IA.
- Adult-onset vanishing white matter disease caused by the EIF2B5 c.185A>T (p.Asp62Val) variant.
- A novel splice site variant in DEGS1 leads to aberrant splicing and loss of DEGS1 enzyme activity, a VUS resolved.
- Neuropsychological profile of POLR3A-related spastic ataxia.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology· 2025· PMID 39739274mais citado
- Hypomyelination With Congenital Cataract: A Rare Genetic Leukodystrophy.
- POLR3B-Related Hypomyelinating Leukodystrophy Type 8 (4H Syndrome): A Case Series of Two Siblings.
- De novo variants in KDM2A cause a syndromic neurodevelopmental disorder.
- Movement disorder phenotype in CTNNB1-syndrome: A complex but recognizable phenomenology.
- Further delineation of Wiedemann-Rautenstrauch syndrome linked with POLR3A.
- Mucopolysaccharidosis-Plus Syndrome, a Rapidly Progressive Disease: Favorable Impact of a Very Prolonged Steroid Treatment on the Clinical Course in a Child.
- Cerebral folate transporter deficiency syndrome in three siblings: Why genetic testing for developmental and epileptic encephalopathies should be performed early and include the FOLR1 gene.
Bases de dados e fontes oficiais
Identificadores e referências canônicas usadas para montar este verbete.
- ORPHA:466934(Orphanet)
- OMIM OMIM:616683(OMIM)
- MONDO:0014732(MONDO)
- GARD:17837(GARD (NIH))
- Variantes catalogadas(ClinVar)
- Busca completa no PubMed(PubMed)
- Q28065601(Wikidata)
Dados compilados pelo RarasNet a partir de fontes abertas (Orphanet, OMIM, MONDO, PubMed/EuropePMC, ClinicalTrials.gov, DATASUS, PCDT/MS). Este conteúdo é informativo e não substitui avaliação médica.
Conteúdo mantido por Agente Raras · Médicos e pesquisadores podem colaborar