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Holoprosencefalia, variante inter-hemisférica média
ORPHA:93926CID-10 · Q04.2CID-11 · LA05.2DOENÇA RARA

Obsoleto. A variante inter-hemisférica da linha média da holoprosencefalia (MIH), também conhecida como sintelencefalia, é um tipo de holoprosencefalia (HPE) que se caracteriza pela falta de separação dos lobos frontal posterior e parietal (partes do cérebro); pela formação normal do joelho e do esplênio do corpo caloso (as extremidades dessa estrutura), mas com a ausência da porção principal do corpo caloso; pela separação normal do hipotálamo e do núcleo lentiforme (outras estruturas do cérebro); e pela presença frequente de matéria cinzenta em locais incomuns.

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Introdução

O que você precisa saber de cara

📋

Obsoleto. A variante inter-hemisférica da linha média da holoprosencefalia (MIH), também conhecida como sintelencefalia, é um tipo de holoprosencefalia (HPE) que se caracteriza pela falta de separação dos lobos frontal posterior e parietal (partes do cérebro); pela formação normal do joelho e do esplênio do corpo caloso (as extremidades dessa estrutura), mas com a ausência da porção principal do corpo caloso; pela separação normal do hipotálamo e do núcleo lentiforme (outras estruturas do cérebro); e pela presença frequente de matéria cinzenta em locais incomuns.

Escala de raridade

CLASSIFICAÇÃO ORPHANET · BRASIL 2024
Unknown
Ultra-rara
<1/50k
Muito rara
1/20k
Rara
1/10k
Pouco freq.
1/5k
Incomum
1/2k
Prevalência
0.0
Worldwide
Início
Infancy
+ neonatal
🏥
SUS: Cobertura mínimaScore: 15%
CID-10: Q04.2
🇧🇷Dados SUS / DATASUS
PROCEDIMENTOS SIGTAP (5)
0202010503
Cariótipo — bandas G, Q ou Rgenetic_test
0202010600
Pesquisa de microdeleções/microduplicações por FISHlab_test
0202010694
Sequenciamento completo do exoma (WES)rehabilitation
0202010260
Dosagem de alfa-fetoproteína
0301070040
Atendimento em reabilitação — doenças raras
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Sinais e sintomas

O que aparece no corpo e com que frequência cada sintoma acontece

Partes do corpo afetadas

🧠
Neurológico
13 sintomas
📏
Crescimento
9 sintomas
🫃
Digestivo
5 sintomas
🦴
Ossos e articulações
5 sintomas
😀
Face
5 sintomas
🫁
Pulmão
4 sintomas

+ 23 sintomas em outras categorias

Características mais comuns

90%prev.
Hipotelorismo
Muito frequente (99-80%)
90%prev.
Atraso de crescimento
Muito frequente (99-80%)
90%prev.
Déficit de crescimento
Muito frequente (99-80%)
90%prev.
Sucção pobre
Muito frequente (99-80%)
90%prev.
Anormalidade do olho
Muito frequente (99-80%)
90%prev.
Baixa estatura
Muito frequente (99-80%)
72sintomas
Muito frequente (7)
Frequente (41)
Ocasional (24)

Os sintomas variam de pessoa para pessoa. Abaixo estão as 72 características clínicas mais associadas, ordenadas por frequência.

HipotelorismoHypotelorism
Muito frequente (99-80%)90%
Atraso de crescimentoGrowth delay
Muito frequente (99-80%)90%
Déficit de crescimentoFailure to thrive
Muito frequente (99-80%)90%
Sucção pobrePoor suck
Muito frequente (99-80%)90%
Anormalidade do olhoAbnormality of the eye
Muito frequente (99-80%)90%

Linha do tempo da pesquisa

Publicações por ano — veja quando o interesse científico cresceu
Anos de pesquisa11
Últimos 10 anos13publicações
Pico20223 papers
Linha do tempo
20202015Hoje · 2026📈 2022Ano de pico
Publicações por ano (últimos 10 anos)

Encontrou um erro ou informação desatualizada? Sugira uma correção →

Genética e causas

O que está alterado no DNA e como passa nas famílias

Genes associados

15 genes identificados com associação a esta condição. Padrão de herança: Multigenic/multifactorial, Not applicable.

SIX3Homeobox protein SIX3Disease-causing germline mutation(s) inAltamente restrito
FUNÇÃO

Transcriptional regulator which can act as both a transcriptional repressor and activator by binding a ATTA homeodomain core recognition sequence on these target genes. During forebrain development represses WNT1 expression allowing zona limitans intrathalamica formation and thereby ensuring proper anterio-posterior patterning of the diencephalon and formation of the rostral diencephalon. Acts as a direct upstream activator of SHH expression in the rostral diencephalon ventral midline and that i

LOCALIZAÇÃO

Nucleus

MECANISMO DE DOENÇA

Holoprosencephaly 2

A form of holoprosencephaly, a structural anomaly of the brain in which the developing forebrain fails to correctly separate into right and left hemispheres. It is a genetically and clinically heterogeneous disorder with a wide spectrum of severity, ranging from alobar holoprosencephaly with severe facial abnormalities, such as cyclopia and proboscis, to mild forms that include lobar or microform holoprosencephaly, without cerebral malformations and with mild craniofacial defects. HPE2 inheritance is autosomal dominant.

EXPRESSÃO TECIDUAL(Tecido-específico)
Brain Nucleus accumbens basal ganglia
52.0 TPM
Pituitária
42.5 TPM
Brain Caudate basal ganglia
41.0 TPM
Brain Putamen basal ganglia
30.8 TPM
Hipotálamo
13.7 TPM
OUTRAS DOENÇAS (8)
holoprosencephaly 2schizencephalyacquired schizencephalyalobar holoprosencephaly
HGNC:10889UniProt:O95343
STILSCL-interrupting locus proteinDisease-causing germline mutation(s) inTolerante
FUNÇÃO

Immediate-early gene. Plays an important role in embryonic development as well as in cellular growth and proliferation; its long-term silencing affects cell survival and cell cycle distribution as well as decreases CDK1 activity correlated with reduced phosphorylation of CDK1. Plays a role as a positive regulator of the sonic hedgehog pathway, acting downstream of PTCH1 (PubMed:16024801, PubMed:9372240). Plays an important role in the regulation of centriole duplication. Required for the onset o

LOCALIZAÇÃO

Cytoplasm, cytosolCytoplasm, cytoskeleton, microtubule organizing center, centrosome, centrioleCytoplasm, cell cortex

EXPRESSÃO TECIDUAL(Tecido-específico)
Linfócitos
21.9 TPM
Testículo
9.8 TPM
Fibroblastos
5.8 TPM
Esôfago - Mucosa
3.5 TPM
Intestino delgado
2.9 TPM
OUTRAS DOENÇAS (7)
microcephaly 7, primary, autosomal recessiveautosomal recessive primary microcephalyalobar holoprosencephalyprecursor T-cell acute lymphoblastic leukemia
HGNC:10879UniProt:Q15468
PTCH1Protein patched homolog 1Disease-causing germline mutation(s) inAltamente restrito
FUNÇÃO

Acts as a receptor for sonic hedgehog (SHH), indian hedgehog (IHH) and desert hedgehog (DHH). Associates with the smoothened protein (SMO) to transduce the hedgehog's proteins signal. Seems to have a tumor suppressor function, as inactivation of this protein is probably a necessary, if not sufficient step for tumorigenesis

LOCALIZAÇÃO

Cell membrane

VIAS BIOLÓGICAS (4)
Hedgehog 'on' stateActivation of SMOLigand-receptor interactionsHedgehog 'off' state
MECANISMO DE DOENÇA

Basal cell nevus syndrome 1

A form of basal cell nevus syndrome, a disease characterized by nevoid basal cell carcinomas and developmental abnormalities such as rib and craniofacial alterations, polydactyly, syndactyly, and spina bifida. In addition, the patients suffer from a multitude of tumors like fibromas of the ovaries and heart, cysts of the skin, jaws and mesentery, as well as medulloblastomas and meningiomas. BCNS1 inheritance is autosomal dominant.

EXPRESSÃO TECIDUAL(Ubíquo)
Cérebro - Hemisfério cerebelar
35.1 TPM
Cerebelo
34.9 TPM
Nervo tibial
33.6 TPM
Testículo
17.2 TPM
Bladder
9.1 TPM
OUTRAS DOENÇAS (11)
basal cell carcinoma, susceptibility to, 1holoprosencephaly 7basal cell nevus syndrome 1obsolete septopreoptic holoprosencephaly
HGNC:9585UniProt:Q13635
GLI2Zinc finger protein GLI2Disease-causing germline mutation(s) inAltamente restrito
FUNÇÃO

Functions as a transcription regulator in the hedgehog (Hh) pathway (PubMed:18455992, PubMed:26565916). Functions as a transcriptional activator (PubMed:19878745, PubMed:24311597, PubMed:9557682). May also function as transcriptional repressor (By similarity). Requires STK36 for full transcriptional activator activity. Required for normal embryonic development (PubMed:15994174, PubMed:20685856) Involved in the smoothened (SHH) signaling pathway Involved in the smoothened (SHH) signaling pathway

LOCALIZAÇÃO

NucleusCytoplasmCell projection, cilium

VIAS BIOLÓGICAS (2)
Hedgehog 'off' stateHedgehog 'on' state
MECANISMO DE DOENÇA

Holoprosencephaly 9

A form of holoprosencephaly, a structural anomaly of the brain in which the developing forebrain fails to correctly separate into right and left hemispheres. It is a genetically and clinically heterogeneous disorder with a wide spectrum of severity, ranging from alobar holoprosencephaly with severe facial abnormalities, such as cyclopia and proboscis, to mild forms that include lobar or microform holoprosencephaly, without cerebral malformations and with mild craniofacial defects. HPE9 is characterized by defective anterior pituitary formation and pan-hypopituitarism, with or without overt forebrain cleavage abnormalities, and holoprosencephaly-like midfacial hypoplasia. HPE9 inheritance is autosomal dominant.

EXPRESSÃO TECIDUAL(Ubíquo)
Ovário
22.1 TPM
Útero
11.2 TPM
Cervix Endocervix
10.1 TPM
Cervix Ectocervix
9.0 TPM
Fibroblastos
7.9 TPM
OUTRAS DOENÇAS (8)
postaxial polydactyly-anterior pituitary anomalies-facial dysmorphism syndromeholoprosencephaly 9combined pituitary hormone deficiencies, genetic formobsolete midline interhemispheric variant of holoprosencephaly
HGNC:4318UniProt:P10070
SHHSonic hedgehog proteinDisease-causing germline mutation(s) inAltamente restrito
FUNÇÃO

The C-terminal part of the sonic hedgehog protein precursor displays an autoproteolysis and a cholesterol transferase activity (By similarity). Both activities result in the cleavage of the full-length protein into two parts (ShhN and ShhC) followed by the covalent attachment of a cholesterol moiety to the C-terminal of the newly generated ShhN (By similarity). Both activities occur in the endoplasmic reticulum (By similarity). Once cleaved, ShhC is degraded in the endoplasmic reticulum (By simi

LOCALIZAÇÃO

Endoplasmic reticulum membraneGolgi apparatus membraneSecretedCell membrane

VIAS BIOLÓGICAS (5)
Hedgehog 'on' stateActivation of SMOLigand-receptor interactionsRelease of Hh-Np from the secreting cellFormation of lateral plate mesoderm
MECANISMO DE DOENÇA

Microphthalmia/Coloboma 5

A disorder of eye formation, ranging from small size of a single eye to complete bilateral absence of ocular tissues. Ocular abnormalities like opacities of the cornea and lens, scaring of the retina and choroid, and other abnormalities may also be present. Ocular colobomas are a set of malformations resulting from abnormal morphogenesis of the optic cup and stalk, and the fusion of the fetal fissure (optic fissure).

EXPRESSÃO TECIDUAL(Tecido-específico)
Nervo tibial
21.7 TPM
Glândula adrenal
7.7 TPM
Fígado
7.4 TPM
Estômago
3.8 TPM
Rim - Medula
3.5 TPM
OUTRAS DOENÇAS (15)
microphthalmia, isolated, with coloboma 5holoprosencephaly 3solitary median maxillary central incisor syndrometibia, hypoplasia or aplasia of, with polydactyly
HGNC:10848UniProt:Q15465
CRIPTOProtein CriptoDisease-causing germline mutation(s) inTolerante
FUNÇÃO

GPI-anchored cell membrane protein involved in Nodal signaling. Cell-associated CRIPTO acts as a Nodal coreceptor in cis. Shedding of CRIPTO by TMEM8A modulates Nodal signaling by allowing soluble CRIPTO to act as a Nodal coreceptor on other cells (PubMed:27881714). Could play a role in the determination of the epiblastic cells that subsequently give rise to the mesoderm (PubMed:11909953)

LOCALIZAÇÃO

Cell membraneSecreted

VIAS BIOLÓGICAS (3)
Signaling by NODALRegulation of signaling by NODALPOU5F1 (OCT4), SOX2, NANOG activate genes related to proliferation
OUTRAS DOENÇAS (5)
microform holoprosencephalyobsolete midline interhemispheric variant of holoprosencephalyalobar holoprosencephalylobar holoprosencephaly
HGNC:11701UniProt:P13385
ZIC2Zinc finger protein ZIC 2Disease-causing germline mutation(s) inAltamente restrito
FUNÇÃO

Acts as a transcriptional activator or repressor. Plays important roles in the early stage of organogenesis of the CNS. Activates the transcription of the serotonin transporter SERT in uncrossed ipsilateral retinal ganglion cells (iRGCs) to refine eye-specific projections in primary visual targets. Its transcriptional activity is repressed by MDFIC. Involved in the formation of the ipsilateral retinal projection at the optic chiasm midline. Drives the expression of EPHB1 on ipsilaterally project

LOCALIZAÇÃO

NucleusCytoplasm

VIAS BIOLÓGICAS (1)
Formation of the anterior neural plate
MECANISMO DE DOENÇA

Holoprosencephaly 5

A form of holoprosencephaly, a structural anomaly of the brain in which the developing forebrain fails to correctly separate into right and left hemispheres. It is a genetically and clinically heterogeneous disorder with a wide spectrum of severity, ranging from alobar holoprosencephaly with severe facial abnormalities, such as cyclopia and proboscis, to mild forms that include lobar or microform holoprosencephaly, without cerebral malformations and with mild craniofacial defects. HPE5 inheritance is autosomal dominant.

EXPRESSÃO TECIDUAL(Tecido-específico)
Cérebro - Hemisfério cerebelar
298.1 TPM
Cerebelo
248.3 TPM
Córtex cerebral
9.4 TPM
Brain Anterior cingulate cortex BA24
8.5 TPM
Brain Frontal Cortex BA9
7.4 TPM
OUTRAS DOENÇAS (6)
holoprosencephaly 5microform holoprosencephalyalobar holoprosencephalyobsolete midline interhemispheric variant of holoprosencephaly
HGNC:12873UniProt:O95409
NODALNodal homologDisease-causing germline mutation(s) inRestrito
FUNÇÃO

Essential for mesoderm formation and axial patterning during embryonic development

LOCALIZAÇÃO

Secreted

VIAS BIOLÓGICAS (2)
Signaling by NODALRegulation of signaling by NODAL
MECANISMO DE DOENÇA

Heterotaxy, visceral, 5, autosomal

An autosomal dominant form of visceral heterotaxy, a complex disorder due to disruption of the normal left-right asymmetry of the thoracoabdominal organs. Visceral heterotaxy or situs ambiguus results in randomization of the placement of visceral organs, including the heart, lungs, liver, spleen, and stomach. The organs are oriented randomly with respect to the left-right axis and with respect to one another. It can be associated with a variety of congenital defects including cardiac malformations. HTX5 clinical features include situs inversus viscerum or situs ambiguus, congenital heart defect, transposition of the great vessels ventricular septal defect, atrial septal defect, truncus communis, and dextrocardia.

EXPRESSÃO TECIDUAL(Baixa expressão)
Testículo
3.4 TPM
Cerebelo
2.8 TPM
Cervix Ectocervix
2.3 TPM
Cérebro - Hemisfério cerebelar
2.2 TPM
Skin Sun Exposed Lower leg
2.0 TPM
OUTRAS DOENÇAS (8)
heterotaxy, visceral, 5, autosomalmicroform holoprosencephalyvisceral heterotaxyalobar holoprosencephaly
HGNC:7865UniProt:Q96S42
GAS1Growth arrest-specific protein 1Disease-causing germline mutation(s) inModerado
FUNÇÃO

Specific growth arrest protein involved in growth suppression. Blocks entry to S phase. Prevents cycling of normal and transformed cells. Binds 20(S)-hydroxycholesterol (20(S)-OHC) (By similarity)

LOCALIZAÇÃO

Cell membrane

VIAS BIOLÓGICAS (2)
Activation of SMOLigand-receptor interactions
EXPRESSÃO TECIDUAL(Ubíquo)
Útero
191.2 TPM
Fallopian Tube
164.2 TPM
Adipose Visceral Omentum
112.1 TPM
Ovário
94.2 TPM
Fibroblastos
88.8 TPM
OUTRAS DOENÇAS (5)
lobar holoprosencephalyobsolete septopreoptic holoprosencephalyobsolete midline interhemispheric variant of holoprosencephalyalobar holoprosencephaly
HGNC:4165UniProt:P54826
FGF8Fibroblast growth factor 8Disease-causing germline mutation(s) inModerado
FUNÇÃO

Plays an important role in the regulation of embryonic development, cell proliferation, cell differentiation and cell migration. Required for normal brain, eye, ear and limb development during embryogenesis. Required for normal development of the gonadotropin-releasing hormone (GnRH) neuronal system (PubMed:16384934, PubMed:16597617, PubMed:8663044). Plays a role in neurite outgrowth in hippocampal cells (PubMed:21576111)

LOCALIZAÇÃO

Secreted

VIAS BIOLÓGICAS (1)
Formation of the posterior neural plate
MECANISMO DE DOENÇA

Hypogonadotropic hypogonadism 6 with or without anosmia

A disorder characterized by absent or incomplete sexual maturation by the age of 18 years, in conjunction with low levels of circulating gonadotropins and testosterone and no other abnormalities of the hypothalamic-pituitary axis. In some cases, it is associated with non-reproductive phenotypes, such as anosmia, cleft palate, and sensorineural hearing loss. Anosmia or hyposmia is related to the absence or hypoplasia of the olfactory bulbs and tracts. Hypogonadism is due to deficiency in gonadotropin-releasing hormone and probably results from a failure of embryonic migration of gonadotropin-releasing hormone-synthesizing neurons. In the presence of anosmia, idiopathic hypogonadotropic hypogonadism is referred to as Kallmann syndrome, whereas in the presence of a normal sense of smell, it has been termed normosmic idiopathic hypogonadotropic hypogonadism (nIHH).

EXPRESSÃO TECIDUAL(Baixa expressão)
Testículo
1.2 TPM
Córtex cerebral
0.6 TPM
Linfócitos
0.6 TPM
Brain Frontal Cortex BA9
0.6 TPM
Brain Anterior cingulate cortex BA24
0.5 TPM
OUTRAS DOENÇAS (8)
hypogonadotropic hypogonadism 6 with or without anosmiamicroform holoprosencephalyKallmann syndromehypogonadotropic hypogonadism
HGNC:3686UniProt:P55075
FOXH1Forkhead box protein H1Disease-causing germline mutation(s) inTolerante
FUNÇÃO

Transcriptional activator. Recognizes and binds to the DNA sequence 5'-TGT[GT][GT]ATT-3'. Required for induction of the goosecoid (GSC) promoter by TGF-beta or activin signaling. Forms a transcriptionally active complex containing FOXH1/SMAD2/SMAD4 on a site on the GSC promoter called TARE (TGF-beta/activin response element)

LOCALIZAÇÃO

Nucleus

VIAS BIOLÓGICAS (4)
Germ layer formation at gastrulationFormation of axial mesodermSignaling by ActivinSignaling by NODAL
EXPRESSÃO TECIDUAL(Baixa expressão)
Testículo
1.6 TPM
Cólon transverso
1.1 TPM
Intestino delgado
0.8 TPM
Pituitária
0.7 TPM
Cerebelo
0.6 TPM
OUTRAS DOENÇAS (5)
alobar holoprosencephalyobsolete midline interhemispheric variant of holoprosencephalyobsolete septopreoptic holoprosencephalymicroform holoprosencephaly
HGNC:3814UniProt:O75593
CDONCell adhesion molecule-related/down-regulated by oncogenesDisease-causing germline mutation(s) inTolerante
FUNÇÃO

Component of a cell-surface receptor complex that mediates cell-cell interactions between muscle precursor cells. Promotes differentiation of myogenic cells (By similarity)

LOCALIZAÇÃO

Cell membrane

VIAS BIOLÓGICAS (3)
Activation of SMOLigand-receptor interactionsMyogenesis
MECANISMO DE DOENÇA

Holoprosencephaly 11

A form of holoprosencephaly, a structural anomaly of the brain in which the developing forebrain fails to correctly separate into right and left hemispheres. It is a genetically and clinically heterogeneous disorder with a wide spectrum of severity, ranging from alobar holoprosencephaly with severe facial abnormalities, such as cyclopia and proboscis, to mild forms that include lobar or microform holoprosencephaly, without cerebral malformations and with mild craniofacial defects. HPE11 inheritance is autosomal dominant.

OUTRAS DOENÇAS (7)
holoprosencephaly 11alobar holoprosencephalypituitary stalk interruption syndromelobar holoprosencephaly
HGNC:17104UniProt:Q4KMG0
DLL1Delta-like protein 1Disease-causing germline mutation(s) inAltamente restrito
FUNÇÃO

Transmembrane ligand protein of NOTCH1, NOTCH2 and NOTCH3 receptors that binds the extracellular domain (ECD) of Notch receptor in a cis and trans fashion manner (PubMed:11006133). Following transinteraction, ligand cells produce mechanical force that depends of a clathrin-mediated endocytosis, requiring ligand ubiquitination, EPN1 interaction, and actin polymerisation; these events promote Notch receptor extracellular domain (NECD) transendocytosis and triggers Notch signaling through induction

LOCALIZAÇÃO

Apical cell membraneCell junction, adherens junctionMembrane raft

VIAS BIOLÓGICAS (10)
Differentiation of Keratinocytes in Interfollicular Epidermis in Mammalian SkinNOTCH2 Activation and Transmission of Signal to the NucleusActivated NOTCH1 Transmits Signal to the NucleusConstitutive Signaling by NOTCH1 PEST Domain MutantsSomitogenesis
MECANISMO DE DOENÇA

Neurodevelopmental disorder with non-specific brain abnormalities and with or without seizures

An autosomal dominant disorder characterized by developmental delay, intellectual disability, seizures, autism spectrum disorder, behavioral abnormalities, and variable non-specific brain malformations.

EXPRESSÃO TECIDUAL(Ubíquo)
Baço
97.4 TPM
Próstata
53.9 TPM
Skin Sun Exposed Lower leg
41.0 TPM
Vagina
40.4 TPM
Skin Not Sun Exposed Suprapubic
40.1 TPM
OUTRAS DOENÇAS (7)
neurodevelopmental disorder with nonspecific brain abnormalities and with or without seizuresmicroform holoprosencephalyobsolete midline interhemispheric variant of holoprosencephalylobar holoprosencephaly
HGNC:2908UniProt:O00548
TGIF1Homeobox protein TGIF1Disease-causing germline mutation(s) inAltamente restrito
FUNÇÃO

Binds to a retinoid X receptor (RXR) responsive element from the cellular retinol-binding protein II promoter (CRBPII-RXRE). Inhibits the 9-cis-retinoic acid-dependent RXR alpha transcription activation of the retinoic acid responsive element. Active transcriptional corepressor of SMAD2. Links the nodal signaling pathway to the bifurcation of the forebrain and the establishment of ventral midline structures. May participate in the transmission of nuclear signals during development and in the adu

LOCALIZAÇÃO

Nucleus

VIAS BIOLÓGICAS (2)
Downregulation of SMAD2/3:SMAD4 transcriptional activitySMAD2/SMAD3:SMAD4 heterotrimer regulates transcription
MECANISMO DE DOENÇA

Holoprosencephaly 4

A form of holoprosencephaly, a structural anomaly of the brain in which the developing forebrain fails to correctly separate into right and left hemispheres. It is a genetically and clinically heterogeneous disorder with a wide spectrum of severity, ranging from alobar holoprosencephaly with severe facial abnormalities, such as cyclopia and proboscis, to mild forms that include lobar or microform holoprosencephaly, without cerebral malformations and with mild craniofacial defects. HPE4 inheritance is autosomal dominant.

EXPRESSÃO TECIDUAL(Ubíquo)
Fibroblastos
29.3 TPM
Fallopian Tube
21.4 TPM
Próstata
18.7 TPM
Pulmão
18.4 TPM
Skin Not Sun Exposed Suprapubic
18.3 TPM
OUTRAS DOENÇAS (6)
holoprosencephaly 4microform holoprosencephalyobsolete septopreoptic holoprosencephalylobar holoprosencephaly
HGNC:11776UniProt:Q15583
DISP1Protein dispatched homolog 1Disease-causing germline mutation(s) inTolerante
FUNÇÃO

Functions in hedgehog (Hh) signaling. Regulates the release and extracellular accumulation of cholesterol-modified hedgehog proteins and is hence required for effective production of the Hh signal (By similarity). Synergizes with SCUBE2 to cause an increase in SHH secretion (PubMed:22902404)

LOCALIZAÇÃO

Membrane

MECANISMO DE DOENÇA

Holoprosencephaly 10

A form of holoprosencephaly, a structural anomaly of the brain in which the developing forebrain fails to correctly separate into right and left hemispheres. It is a genetically and clinically heterogeneous disorder with a wide spectrum of severity, ranging from alobar holoprosencephaly with severe facial abnormalities, such as cyclopia and proboscis, to mild forms that include lobar or microform holoprosencephaly, without cerebral malformations and with mild craniofacial defects. HPE10 inheritance pattern is autosomal recessive. Autosomal dominant inheritance with incomplete penetrance or oligogenic inheritance have been reported in some families.

EXPRESSÃO TECIDUAL(Ubíquo)
Pulmão
17.4 TPM
Nervo tibial
16.3 TPM
Cólon sigmoide
15.6 TPM
Testículo
13.9 TPM
Esôfago - Junção
11.0 TPM
OUTRAS DOENÇAS (6)
holoprosencephaly 10alobar holoprosencephalyobsolete midline interhemispheric variant of holoprosencephalylobar holoprosencephaly
HGNC:19711UniProt:Q96F81

Variantes genéticas (ClinVar)

5,022 variantes patogênicas registradas no ClinVar.

🧬 SIX3: NM_005413.4(SIX3):c.917G>C (p.Ser306Thr) ()
🧬 SIX3: NM_005413.4(SIX3):c.221dup (p.Glu75fs) ()
🧬 SIX3: NM_005413.4(SIX3):c.439G>T (p.Asp147Tyr) ()
🧬 SIX3: NM_005413.4(SIX3):c.929T>C (p.Leu310Pro) ()
🧬 SIX3: NM_005413.4(SIX3):c.858del (p.Gly287fs) ()
Ver todas no ClinVar

Vias biológicas (Reactome)

68 vias biológicas associadas aos genes desta condição.

Transcription of NOTCH2NLB gene Phosphorylated Orc1 is ubiquitinated while still associated with chromatin Class B/2 (Secretin family receptors) Hedgehog 'off' state Ligand-receptor interactions Hedgehog 'on' state Activation of SMO Degradation of GLI2 by the proteasome GLI proteins bind promoters of Hh responsive genes to promote transcription RUNX2 regulates chondrocyte maturation Hedgehog ligand biogenesis Hh mutants are degraded by ERAD Release of Hh-Np from the secreting cell HHAT G278V doesn't palmitoylate Hh-Np Formation of lateral plate mesoderm Formation of axial mesoderm Developmental Lineage of Multipotent Pancreatic Progenitor Cells Signaling by NODAL Regulation of signaling by NODAL POU5F1 (OCT4), SOX2, NANOG activate genes related to proliferation Formation of the anterior neural plate PI3K Cascade PIP3 activates AKT signaling Signaling by activated point mutants of FGFR1 Signaling by activated point mutants of FGFR3 FGFR4 ligand binding and activation FGFR3b ligand binding and activation FGFR3c ligand binding and activation FGFR1c ligand binding and activation FGFR2c ligand binding and activation Activated point mutants of FGFR2 Constitutive Signaling by Aberrant PI3K in Cancer Phospholipase C-mediated cascade: FGFR1 Phospholipase C-mediated cascade; FGFR2 Phospholipase C-mediated cascade; FGFR3 Phospholipase C-mediated cascade; FGFR4 Downstream signaling of activated FGFR1 SHC-mediated cascade:FGFR1 PI-3K cascade:FGFR1 FRS-mediated FGFR1 signaling PI-3K cascade:FGFR2 SHC-mediated cascade:FGFR2 FRS-mediated FGFR2 signaling SHC-mediated cascade:FGFR3 FRS-mediated FGFR3 signaling PI-3K cascade:FGFR3 FRS-mediated FGFR4 signaling SHC-mediated cascade:FGFR4 PI-3K cascade:FGFR4 Negative regulation of FGFR1 signaling Negative regulation of FGFR2 signaling Signaling by Activin Germ layer formation at gastrulation Myogenesis Activated NOTCH1 Transmits Signal to the Nucleus Constitutive Signaling by NOTCH1 PEST Domain Mutants Constitutive Signaling by NOTCH1 t(7;9)(NOTCH1:M1580_K2555) Translocation Mutant Constitutive Signaling by NOTCH1 HD Domain Mutants Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants NOTCH2 Activation and Transmission of Signal to the Nucleus NOTCH3 Activation and Transmission of Signal to the Nucleus MECP2 regulates transcription of neuronal ligands Differentiation of Keratinocytes in Interfollicular Epidermis in Mammalian Skin Formation of paraxial mesoderm Somitogenesis Nephron development Downregulation of SMAD2/3:SMAD4 transcriptional activity SMAD2/SMAD3:SMAD4 heterotrimer regulates transcription

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Publicações mais relevantes

Timeline de publicações
0 papers (10 anos)
#1

Holoprosencephaly spectrum: an up-to-date overview of classification, genetics and neuroimaging.

Japanese journal of radiology2025 Jan

Holoprosencephaly (HPE) is a complex forebrain congenital malformation with widely variable outcomes. It represents a disorder of ventral induction, which begins in the fifth gestational week. Its main feature is forebrain cleavage failure, which prevents the brain complete division into right and left hemispheres, the normal development of midline structures, and the deep brain structure. Based on the severity of prosencephalic cleavage failure, three classic forms (lobar, semilobar, and alobar) were described, and subsequently, interhemispheric variant (syntelencephaly) and septopreoptic variants were proposed. This review proposes a practical imaging approach to diagnosing HPE spectrum disorders, allowing an easier recognition and earlier diagnosis, which is essential for prenatal care and adequate parental counseling. In addition, we intend to simplify the understanding of HPE through a didactic discussion, schematic illustrations, and descriptions of each entity's current classification and critical neuroimaging features, as well as the main differential diagnosis of HPE. Holoprosencephaly (HPE) results from an incomplete midline cleavage of the forebrain (prosencephalon). It includes a wide spectrum of intracranial and craniofacial midline defects and a myriad of clinical manifestations, consisting of neurologic impairment and dysmorphism of the brain and face. It is the most common malformation of forebrain development. Evidence suggests that HPE can be present either sporadically or can have a syndromic association. The defect associated with HPE occurs at approximately 3 to 4 weeks post-conception (between day 18 and day 28 of embryonic life) and is a disorder of gastrulation. The HPE phenotype continuum has been divided into 3 categories by DeMyer and Zeman and modified by DeMyer. These categories include: Alobar: This is the most severe and most common form (two-thirds of all HPE cases), characterized by a complete failure to partition the forebrain into the left and right hemispheres; this results in a single, centrally located ventricle. Semilobar: Partial forebrain cleavage Lobar: Almost complete forebrain cleavage Middle interhemispheric variant (syntelencephaly): A rare variant with an abnormal midline union of the posterior frontal and parietal lobes. Septo-preoptic variant: This rarest variant is mild, and the midline fusion is restricted to the telencephalon's septal or preoptic region.

#2

Alobar Holoprosencephaly in a Newborn: A Case Report of Prenatal Diagnosis and a Review of the Literature.

Cureus2024 Nov

Holoprosencephaly (HPE) is a severe and complex congenital brain malformation caused by a defect in the midline cleavage of the prosencephalon during early embryonic development. It is the most common prosencephalic malformation in humans and is categorized into three classical forms based on the severity of this cleavage defect: alobar, semilobar, and lobar HPE. A milder interhemispheric variant, called syntelencephaly, is also considered a form of HPE. This condition may arise from genetic, environmental, or teratogenic factors. Patients with HPE often present with facial dysmorphia, with severity generally correlating with the extent of brain malformation. HPE is diagnosed prenatally through ultrasound and brain magnetic resonance imaging (MRI). Through this case report and a review of the literature, we discuss the etiopathogenic and diagnostic aspects of HPE, along with the management of this congenital malformation, illustrated by the antenatal diagnosis of a newborn with alobar HPE, confirmed by brain MRI at 32 days of age.

#3

Alobar holoprosencephaly with cebocephaly in a neonate: A rare case report from Northern Tanzania.

International journal of surgery case reports2022 Apr

Holoprosencephaly is a rare brain malformation consisting of impaired midline cleavage of the embryonic forebrain presenting with variable features of craniofacial dysmorphism. It affects 1 in 10,000 live births occurring more in females than males. We present a case of alobar HPE and aim to raise awareness on the importance of early prenatal detection and counselling. We present a case of 3200-gram female baby, born by spontaneous vaginal delivery with APGAR scores of 5 and 6 in the first and fifth minute of life respectively. On admission, the baby was lethargic, had central and peripheral cyanosis, hypothermic with temperature of 32.1 °C, respiratory rate of 65 breaths/min, heart rate of 135 beats/min and oxygen saturation of 94% with an oropharyngeal airway and on oxygen support via a face mask. She had microcephaly, hypotelorism, and a small nose with a single imperforate nostril. She was diagnosed to have alobar holoprosencephaly with cebocephaly. A computed tomography scan of the brain revealed a cephalohematoma in the vertex and an intranasal soft tissue density lesion blocking the entrance measuring approximately 10 × 8.5 mm. Absence of the corpus callosum and septum pellucidum with a resulting monoventricle formed from the lateral ventricles, the fusion of the thalami and a sizeable arachnoid cyst involving the left cerebellar hemisphere were evident. She was started on IV antibiotics and IV fluids. Non-invasive airway management was opted for by the ENT team based on the condition of the baby. She succumbed to death 6 days post admission due to severe respiratory failure. The types of HPE are alobar, semi lobar, lobar and interhemispheric variants. Alobar HPE is the most severe form and is incompatible with life. Clinical presentation entails facial dysmorphism with features of hypotelorism, microcephaly and a blind ended nostril. Alobar and semilobar HPE can reliably be diagnosed with ultrasound during the first and second trimesters of pregnancy. Absence of choroid plexus and fused cortex are pathognomonic characteristic on ultrasound and CT scan respectively. Alobar holoprosencephaly is a rare brain malformation which is incompatible with life. Prenatal ultrasound screening of the foetus brain is essential and reliable in making a diagnosis. Absence of the "butterfly" sign in the foetal brain ultrasonography should raise a high index of suspicion for brain malformation with unfavourable outcome. Legal medical termination of pregnancy may serve as an early intervention.

#4

Patterning of the antero-ventral mammalian brain: Lessons from holoprosencephaly comparative biology in man and mouse.

WIREs mechanisms of disease2022 Jul

Adult form and function are dependent upon the activity of specialized signaling centers that act early in development at the embryonic midline. These centers instruct the surrounding cells to adopt a positional fate and to form the patterned structures of the phylotypic embryo. Abnormalities in these processes have devastating consequences for the individual, as exemplified by holoprosencephaly in which anterior midline development fails, leading to structural defects of the brain and/or face. In the 25 years since the first association between human holoprosencephaly and the sonic hedgehog gene, a combination of human and animal genetic studies have enhanced our understanding of the genetic and embryonic causation of this congenital defect. Comparative biology has extended the holoprosencephaly network via the inclusion of gene mutations from multiple signaling pathways known to be required for anterior midline formation. It has also clarified aspects of holoprosencephaly causation, showing that it arises when a deleterious variant is present within a permissive genome, and that environmental factors, as well as embryonic stochasticity, influence the phenotypic outcome of the variant. More than two decades of research can now be distilled into a framework of embryonic and genetic causation. This framework means we are poised to move beyond our current understanding of variants in signaling pathway molecules. The challenges now at the forefront of holoprosencephaly research include deciphering how the mutation of genes involved in basic cell processes can also cause holoprosencephaly, determining the important constituents of the holoprosencephaly permissive genome, and identifying environmental compounds that promote holoprosencephaly. This article is categorized under: Congenital Diseases > Stem Cells and Development Congenital Diseases > Genetics/Genomics/Epigenetics Congenital Diseases > Molecular and Cellular Physiology Congenital Diseases > Environmental Factors.

#5

Prenatal diagnosis of middle interhemispheric variant of holoprosencephaly: review of literature and prenatal case series.

The journal of maternal-fetal &amp; neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians2022 Dec

Middle interhemispheric (MIH) variant of holoprosencephaly (HPE) or syntelencephaly is a rare prosencephalic cleavage disorder. In literature, few cases of accurate prenatal diagnosis have been reported. We report on four additional prenatally diagnosed cases. Between 2012 and 2017, four cases of MIH HPE were retrieved. Data on prenatal imaging, genetic analysis, and pathological investigation are collected. A "PubMed" and "Trip database" search were conducted revealing six papers reporting on 11 prenatally diagnosed cases. Four additional cases of MIH HPE were diagnosed at an earlier gestational age (between 17 and 25 weeks of gestation) compared with 11 cases from the literature review (15-39 weeks). First trimester transvaginal ultrasound facilitates correct differentiation between the severe HPE variants. Frequent association with ZIC2 mutation was found in nearly 50% of the cases (5/11) compared with one case in our series. MIH variant of HPE is detectable from the early second trimester and should be considered in the differential diagnosis when the cavum septi pellucidi (CSP) is absent. Genetic analysis and autopsy should be conducted to investigate this more recent and rare variant.

Publicações recentes

Ver todas no PubMed

📚 EuropePMCmostrando 13

2024

Alobar Holoprosencephaly in a Newborn: A Case Report of Prenatal Diagnosis and a Review of the Literature.

Cureus
2025

Holoprosencephaly spectrum: an up-to-date overview of classification, genetics and neuroimaging.

Japanese journal of radiology
2022

Alobar holoprosencephaly with cebocephaly in a neonate: A rare case report from Northern Tanzania.

International journal of surgery case reports
2022

Patterning of the antero-ventral mammalian brain: Lessons from holoprosencephaly comparative biology in man and mouse.

WIREs mechanisms of disease
2022

Prenatal diagnosis of middle interhemispheric variant of holoprosencephaly: review of literature and prenatal case series.

The journal of maternal-fetal &amp; neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians
2020

Semilobar Holoprosencephaly: Capacious Anomaly in the Cephalad.

Cureus
2019

Middle interhemispheric variant of holoprosencephaly in an asymptomatic adult.

BJR case reports
2019

The wide spectrum of ultrasound diagnosis of holoprosencephaly.

Medical ultrasonography
2018

ZIC2 in Holoprosencephaly.

Advances in experimental medicine and biology
2016

Case 236: Middle Interhemispheric Variant of Holoprosencephaly.

Radiology
2016

The middle interhemispheric variant of holoprosencephaly: magnetic resonance and diffusion tensor imaging findings.

The British journal of radiology
2015

Middle interhemispheric variant of holoprosencephaly: A rare midline malformation.

Journal of pediatric neurosciences
2015

Holoprosencephaly: a survey of the entity, with embryology and fetal imaging.

Radiographics : a review publication of the Radiological Society of North America, Inc

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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.

  1. Holoprosencephaly spectrum: an up-to-date overview of classification, genetics and neuroimaging.
    Japanese journal of radiology· 2025· PMID 39259418mais citado
  2. Alobar Holoprosencephaly in a Newborn: A Case Report of Prenatal Diagnosis and a Review of the Literature.
    Cureus· 2024· PMID 39726469mais citado
  3. Alobar holoprosencephaly with cebocephaly in a neonate: A rare case report from Northern Tanzania.
    International journal of surgery case reports· 2022· PMID 35364389mais citado
  4. Patterning of the antero-ventral mammalian brain: Lessons from holoprosencephaly comparative biology in man and mouse.
    WIREs mechanisms of disease· 2022· PMID 35137563mais citado
  5. Prenatal diagnosis of middle interhemispheric variant of holoprosencephaly: review of literature and prenatal case series.
    The journal of maternal-fetal &amp; neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians· 2022· PMID 33455493mais citado
  6. The wide spectrum of ultrasound diagnosis of holoprosencephaly.
    Med Ultrason· 2019· PMID 31063520recente
  7. ZIC2 in Holoprosencephaly.
    Adv Exp Med Biol· 2018· PMID 29442327recente

Bases de dados e fontes oficiais

Identificadores e referências canônicas usadas para montar este verbete.

  1. ORPHA:93926(Orphanet)
  2. MONDO:0019758(MONDO)
  3. Variantes catalogadas(ClinVar)
  4. Busca completa no PubMed(PubMed)
  5. Q16517961(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

Compêndio · Raras BR

Holoprosencefalia, variante inter-hemisférica média

ORPHA:93926 · MONDO:0019758
Prevalência
Unknown
Herança
Multigenic/multifactorial, Not applicable
CID-10
Q04.2 · Holoprosencefalia
CID-11
Início
Infancy, Neonatal
Prevalência
0.0 (Worldwide)
MedGen
UMLS
C5396362
Wikidata
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