A síndrome de microcefalia, polimicrogiria e agenesia do corpo caloso é uma condição rara e genética que afeta a formação do sistema nervoso central. Ela se manifesta por: microcefalia acentuada (cabeça pequena) que começa ainda na gravidez; grande atraso no desenvolvimento dos movimentos (motor) com fraqueza muscular (hipotonia); polimicrogiria bilateral (muitas dobras pequenas e anormais nos dois lados do cérebro); ausência do corpo caloso (a estrutura que liga os dois hemisférios cerebrais); dilatação ventricular (aumento dos espaços com líquido dentro do cérebro); cerebelo pequeno; e morte precoce.
Introdução
O que você precisa saber de cara
A síndrome de microcefalia, polimicrogiria e agenesia do corpo caloso é uma condição rara e genética que afeta a formação do sistema nervoso central. Ela se manifesta por: microcefalia acentuada (cabeça pequena) que começa ainda na gravidez; grande atraso no desenvolvimento dos movimentos (motor) com fraqueza muscular (hipotonia); polimicrogiria bilateral (muitas dobras pequenas e anormais nos dois lados do cérebro); ausência do corpo caloso (a estrutura que liga os dois hemisférios cerebrais); dilatação ventricular (aumento dos espaços com líquido dentro do cérebro); cerebelo pequeno; e morte precoce.
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
+ 1 sintomas em outras categorias
Características mais comuns
Os sintomas variam de pessoa para pessoa. Abaixo estão as 7 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.
Functions as a transcriptional activator playing a crucial role during development. Functions in trophoblast differentiation and later in gastrulation, regulating both mesoderm delamination and endoderm specification. Plays a role in brain development being required for the specification and the proliferation of the intermediate progenitor cells and their progeny in the cerebral cortex (PubMed:17353897). Required for differentiation and migration of unipolar dendritic brush cells (PubMed:3348834
Nucleus
Variantes genéticas (ClinVar)
16 variantes patogênicas registradas no ClinVar.
Classificação de variantes (ClinVar)
Distribuição de 1 variantes classificadas pelo ClinVar.
Vias biológicas (Reactome)
5 vias biológicas associadas 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 — Microcefalia - polimicrogiria - agenesia do corpo caloso
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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.
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Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical NeurophysiologyImaging Findings and MRI Patterns in a Cohort of 18q Chromosomal Abnormalities.
AJNR. American journal of neuroradiologyPrenatal Diagnosis of Fryns Syndrome through Identification of Two Novel Splice Variants in the PIGN Gene-A Case Series.
Life (Basel, Switzerland)White matter alterations predict outcomes of comprehensive behavioral intervention for tics in children with Tourette syndrome: A diffusion MRI study.
Journal of psychiatric researchCryo-EM structures elucidate the multiligand receptor nature of megalin.
Proceedings of the National Academy of Sciences of the United States of AmericaExpanding phenotype of MED13-associated syndrome presenting novel de novo missense variant in a patient with multiple congenital anomalies.
BMC medical genomicsTotal callosotomy ameliorates epileptic activity and improves cognitive function in a patient with Miller-Dieker syndrome.
Epilepsy & behavior reportsBeckwith-Wiedemann Syndrome With Severe Relapsing Hypoglycemia After the Neonatal Period: A Case Report and a Literature Review.
Cureus[Genetic analysis of a fetus with Pitt-Hopkins syndrome due to a 18q21.2q21.31 microdeletion].
Zhonghua yi xue yi chuan xue za zhi = Zhonghua yixue yichuanxue zazhi = Chinese journal of medical geneticsReport of a Novel Homozygous Intragenic DCC Duplication and a Review of Literature of Developmental Split-Brain Syndrome aka Horizontal Gaze Palsy with Progressive Scoliosis-2 with Impaired Intellectual Development Syndrome.
Molecular syndromologyPediatric Cochlear Implants in the Chudley-McCullough Syndrome: A Report of Two Cases.
CureusFetus with multiple congenital anomaly syndrome caused by novel variant in ATP1A2.
Prenatal diagnosisDe novo start-loss variant in HIRA in patient with DiGeorge-like syndrome.
Clinical geneticsPrenatal phenotype of a homozygous nonsense MPDZ variant in a fetus with severe congenital hydrocephalus.
Prenatal diagnosisA female case of L1 syndrome that may have developed due to skewed X inactivation.
Brain & developmentSingle Nucleotide Polymorphism in Cell Adhesion Molecule L1 Affects Learning and Memory in a Mouse Model of Traumatic Brain Injury.
International journal of molecular sciencesStructural brain abnormalities in Pallister-Killian syndrome: a neuroimaging study of 31 children.
Orphanet journal of rare diseasesNeurosurgical intervention for the Meckel-Gruber Syndrome: A systematic review.
Child's nervous system : ChNS : official journal of the International Society for Pediatric NeurosurgeryA selective defect in the glial wedge as part of the neuroepithelium disruption in hydrocephalus development in the mouse hyh model is associated with complete corpus callosum dysgenesis.
Frontiers in cellular neuroscienceNovel characterization of CASK variant c.1963 A>G (p.Asn655Asp) through whole-exome sequencing in a monochorionic diamniotic twin fetus with significant brain anomalies: A case report.
Case reports in women's healthHigh incidence of cerebrovascular lesions on magnetic resonance imaging in pediatric COVID-19 during omicron outbreak - A retrospective case series.
Journal of the Formosan Medical Association = Taiwan yi zhiA de novo pathogenic variant in DHX30 gene in a fetus with isolated dysgenesis of the corpus callosum.
Prenatal diagnosisPGAP2-Related Hyperphosphatasia-Mental Retardation Syndrome: Report of a Novel Patient, Toward a Broadening of Phenotypic Spectrum and Therapeutic Perspectives.
NeuropediatricsSepto-Optic Dysplasia: A Case Series of 33 Patients.
Neuro-ophthalmology (Aeolus Press)Cerebellar Heterotopia: Broadening the Neuroradiological Spectrum of KBG Syndrome.
Cerebellum (London, England)Case report: Twice-daily tolvaptan dosing regimen in a challenging case of hyponatremia due to SIAD.
Frontiers in endocrinologyA genetic variant in the MAST1 gene is associated with mega-corpus-callosum syndrome with hypoplastic cerebellar vermis, in a fetus.
Molecular genetics & genomic medicineHydrocephalus associated with a molar tooth sign: A distinct subtype of Joubert syndrome.
Developmental medicine and child neurologyNovel loss-of-function variants expand ABCC9-related intellectual disability and myopathy syndrome.
Brain : a journal of neurologyMicrostructural white matter abnormalities in overactive bladder syndrome evaluation with diffusion kurtosis imaging tract-based spatial statistics analysis.
World journal of urologyA de novo variant in ZBTB18 gene caused autosomal dominant non-syndromic intellectual disability 22 syndrome: A case report and literature review.
MedicinePerinatal clinical course of Vici syndrome associated with novel EPG5 variants: unique cardiac changes and difficulty with foetal diagnosis.
BMJ case reportsIatrogenic Shapiro syndrome: a case report.
Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical NeurophysiologyCongenital Zika Virus Infection Impairs Corpus Callosum Development.
VirusesA novel SMARCC1 BAFopathy implicates neural progenitor epigenetic dysregulation in human hydrocephalus.
Brain : a journal of neurologyA novel NONO nonsense variant in a fetus with renal abnormalities.
Prenatal diagnosisCase report: Pai syndrome with multiple ventricular septal defect and without cleft palate.
Clinical neurology and neurosurgerySpectral-based thickness profiling of the corpus callosum enhances anomaly detection in fetal alcohol spectrum disorders.
Frontiers in neuroscienceInfantile epileptic spasm syndrome as a new NR2F1 gene phenotype.
International journal of developmental neuroscience : the official journal of the International Society for Developmental NeuroscienceCorrelation of Diffusion Tensor Tractography with Restless Legs Syndrome Severity.
Brain sciencesBi-allelic ACBD6 variants lead to a neurodevelopmental syndrome with progressive and complex movement disorders.
Brain : a journal of neurologyPrenatal Diagnosis of Primrose Syndrome.
Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in MedicineTeaching Neuroimage - Aicardi Syndrome: A Triad of Epileptic Spasms, Agenesis of Corpus Callosum, and Chorio-Retinal Lacunae.
Neurology IndiaAn Infant With Primrose Syndrome: A Case Report.
CureusPrenatal Magnetic Resonance Imaging helps Discover Cerebellar Dysplasia or Malformations in Foetuses.
Current medical imagingTwo novel cases of biallelic SMPD4 variants with brain structural abnormalities.
NeurogeneticsFurther characterisation of ARX-related disorders in females due to inherited or de novo variants.
Journal of medical geneticsLoss-of-function variants in ZEB1 cause dominant anomalies of the corpus callosum with favourable cognitive prognosis.
Journal of medical geneticsTatton-Brown-Rahman syndrome: Novel pathogenic variants and new neuroimaging findings.
American journal of medical genetics. Part AAnalysis of CT and MRI Manifestations of Joubert Syndrome.
Journal of the Belgian Society of RadiologyRIT1 regulation of CNS lipids RIT1 deficiency Alters cerebral lipid metabolism and reduces white matter tract oligodendrocytes and conduction velocities.
HeliyonA novel syndrome associated with prenatal fentanyl exposure.
Genetics in medicine openAdvanced Optical Microscopy: Unveiling Functional Insights Regarding a Novel PPP2R1A Variant and Its Unreported Phenotype.
International journal of molecular sciencesMAST1-related mega-corpus-callosum syndrome with central hypogonadism.
European journal of medical geneticsIncidence of Hearing Loss in Corpus Callosum Agenesis.
Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and NeurotologySyndrome of megalencephaly, mega corpus callosum, and complete lack of motor development: an unusual case and a literature review.
Child's nervous system : ChNS : official journal of the International Society for Pediatric NeurosurgeryModulation of Plasmatic Matrix Metalloprotease 9: A Promising New Tool for Understanding the Variable Clinical Responses of Patients with Cystic Fibrosis to Cystic Fibrosis Transmembrane Conductance Regulator Modulators.
International journal of molecular sciencesPrenatal diagnosis of lanosterol synthase deficiency: Fetal ultrasound findings as a window on family genetics.
European journal of medical geneticsAssociações
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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.
- Clinical, Neuroimaging and Video Electroencephalography Findings in Children With Congenital Zika Syndrome: An Analysis From a Neurorehabilitation Centre.International journal of developmental neuroscience : the official journal of the International Society for Developmental Neuroscience· 2026· PMID 41839214mais citado
- Case Report: A female case of X-linked intellectual disability syndrome type 34 caused by a NONO frameshift variant and literature review.
- Bi-allelic variants in FSD1L cause a neurodevelopmental disorder overlapping with L1 syndrome.
- Neurological Consequences of Infantile Vitamin B12 Deficiency - A Prospective Cohort Study.
- Systematic analysis of homozygous autosomal copy number losses in exomes improves diagnostic yield and uncovers ultra-rare recessive disorders.
- A rare variant of USP9X associated with female-restricted X-linked syndromic intellectual disability.
- Some novel causes and clinical characteristics of reversible splenial lesion syndrome- found in children.
- Pituitary Gland Duplication Syndrome: An International Imaging Analysis.
- Agenesis of Corpus Callosum, Malformations of Cortical Development, Duodenal Atresia and Fetal Growth Restriction: Prenatal Markers for Zhu-Tokita-Takenouchi-Kim Syndrome.
Bases de dados e fontes oficiais
Identificadores e referências canônicas usadas para montar este verbete.
- ORPHA:171703(Orphanet)
- MONDO:0015745(MONDO)
- GARD:20125(GARD (NIH))
- Variantes catalogadas(ClinVar)
- Busca completa no PubMed(PubMed)
- Q55785687(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
