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Holoprosencefalia microforma
ORPHA:280200CID-10 · Q04.2CID-11 · LA05.2DOENÇA RARA

A holoprosencefalia microforma é uma forma benigna de holoprosencefalia (HPE), caracterizada por defeitos na linha média (como no rosto ou na cabeça), mas sem o problema típico da HPE, que é a falha na divisão do cérebro.

Mantido por Agente Raras·Colaborar como especialista →

Introdução

O que você precisa saber de cara

📋

A holoprosencefalia microforma é uma forma benigna de holoprosencefalia (HPE), caracterizada por defeitos na linha média (como no rosto ou na cabeça), mas sem o problema típico da HPE, que é a falha na divisão do cérebro.

Publicações científicas
7 artigos
Último publicado: 2023 Jun 27

Escala de raridade

CLASSIFICAÇÃO ORPHANET · BRASIL 2024
1-9 / 100 000
Ultra-rara
<1/50k
Muito rara
1/20k
Rara
1/10k
Pouco freq.
1/5k
Incomum
1/2k
Prevalência
0.0
Europe
Início
Childhood
+ 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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Entender a doença

Do básico ao detalhe, leia no seu ritmo

Preparando trilha educativa...

Sinais e sintomas

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

Partes do corpo afetadas

😀
Face
31 sintomas
📏
Crescimento
10 sintomas
🧠
Neurológico
8 sintomas
👁️
Olhos
5 sintomas
🦴
Ossos e articulações
5 sintomas
❤️
Coração
3 sintomas

+ 41 sintomas em outras categorias

Características mais comuns

90%prev.
Incisivo maxilar mediano único
Muito frequente (99-80%)
90%prev.
Atresia de coana
Muito frequente (99-80%)
90%prev.
Estenose midnasal
Muito frequente (99-80%)
55%prev.
Vermelhão do lábio superior em tenda
Frequente (79-30%)
55%prev.
Hipotelorismo
Frequente (79-30%)
55%prev.
Retardo do crescimento intrauterino
Frequente (79-30%)
112sintomas
Muito frequente (3)
Frequente (9)
Ocasional (23)
Sem dados (77)

Os sintomas variam de pessoa para pessoa. Abaixo estão as 112 características clínicas mais associadas, ordenadas por frequência.

Incisivo maxilar mediano únicoSingle median maxillary incisor
Muito frequente (99-80%)90%
Atresia de coanaChoanal atresia
Muito frequente (99-80%)90%
Estenose midnasalMidnasal stenosis
Muito frequente (99-80%)90%
Vermelhão do lábio superior em tendaTented upper lip vermilion
Frequente (79-30%)55%
HipotelorismoHypotelorism
Frequente (79-30%)55%

Linha do tempo da pesquisa

Publicações por ano — veja quando o interesse científico cresceu
Anos de pesquisa3desde 2023
Total histórico7PubMed
Últimos 10 anos2publicações
Pico20161 papers
Linha do tempo
2023Hoje · 2026
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

16 genes identificados com associação a esta condição. Padrão de herança: Multigenic/multifactorial.

FGFR1Fibroblast growth factor receptor 1Candidate gene tested inAltamente restrito
FUNÇÃO

Tyrosine-protein kinase that acts as a cell-surface receptor for fibroblast growth factors and plays an essential role in the regulation of embryonic development, cell proliferation, differentiation and migration. Required for normal mesoderm patterning and correct axial organization during embryonic development, normal skeletogenesis and normal development of the gonadotropin-releasing hormone (GnRH) neuronal system. Phosphorylates PLCG1, FRS2, GAB1 and SHB. Ligand binding leads to the activati

LOCALIZAÇÃO

Cell membraneNucleusCytoplasm, cytosolCytoplasmic vesicle

VIAS BIOLÓGICAS (2)
Epithelial-Mesenchymal Transition (EMT) during gastrulationFormation of paraxial mesoderm
MECANISMO DE DOENÇA

Pfeiffer syndrome

A syndrome characterized by the association of craniosynostosis, broad and deviated thumbs and big toes, and partial syndactyly of the fingers and toes. Three subtypes are known: mild autosomal dominant form (type 1); cloverleaf skull, elbow ankylosis, early death, sporadic (type 2); craniosynostosis, early demise, sporadic (type 3).

EXPRESSÃO TECIDUAL(Ubíquo)
Aorta
144.8 TPM
Ovário
142.9 TPM
Artéria tibial
134.1 TPM
Fallopian Tube
122.3 TPM
Cérebro - Hemisfério cerebelar
122.0 TPM
OUTRAS DOENÇAS (20)
Hartsfield-Bixler-Demyer syndromeencephalocraniocutaneous lipomatosisosteoglophonic dysplasiaPfeiffer syndrome
HGNC:3688UniProt:P11362
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
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
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
SUFUSuppressor of fused homologCandidate gene tested inAltamente restrito
FUNÇÃO

Negative regulator in the hedgehog/smoothened signaling pathway (PubMed:10559945, PubMed:10564661, PubMed:10806483, PubMed:12068298, PubMed:12975309, PubMed:15367681, PubMed:22365972, PubMed:24217340, PubMed:24311597, PubMed:27234298, PubMed:28965847). Down-regulates GLI1-mediated transactivation of target genes (PubMed:15367681, PubMed:24217340, PubMed:24311597). Down-regulates GLI2-mediated transactivation of target genes (PubMed:24217340, PubMed:24311597). Part of a corepressor complex that a

LOCALIZAÇÃO

CytoplasmNucleus

VIAS BIOLÓGICAS (4)
GLI3 is processed to GLI3R by the proteasomeHedgehog 'off' stateDegradation of GLI1 by the proteasomeDegradation of GLI2 by the proteasome
MECANISMO DE DOENÇA

Medulloblastoma

Malignant, invasive embryonal tumor of the cerebellum with a preferential manifestation in children.

EXPRESSÃO TECIDUAL(Ubíquo)
Skin Sun Exposed Lower leg
19.1 TPM
Testículo
17.1 TPM
Skin Not Sun Exposed Suprapubic
16.1 TPM
Nervo tibial
15.3 TPM
Útero
14.5 TPM
OUTRAS DOENÇAS (11)
Joubert syndrome 32basal cell nevus syndrome 2familial multiple meningiomamedulloblastoma with extensive nodularity
HGNC:16466UniProt:Q9UMX1
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
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
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
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
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
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
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
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
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

Variantes genéticas (ClinVar)

5,428 variantes patogênicas registradas no ClinVar.

🧬 FGFR1: NM_023110.3(FGFR1):c.2156T>C (p.Met719Thr) ()
🧬 FGFR1: NM_023110.3(FGFR1):c.570del (p.Trp190fs) ()
🧬 FGFR1: NM_023110.3(FGFR1):c.74del (p.Pro25fs) ()
🧬 FGFR1: NM_023110.3(FGFR1):c.494del (p.Leu165fs) ()
🧬 FGFR1: NM_023110.3(FGFR1):c.831dup (p.Lys278Ter) ()
Ver todas no ClinVar

Classificação de variantes (ClinVar)

Distribuição de 14 variantes classificadas pelo ClinVar.

10
4
Patogênica (71.4%)
VUS (28.6%)
VARIANTES MAIS SIGNIFICATIVAS
PTCH1: NM_000264.5(PTCH1):c.585-17_585-13del [Conflicting classifications of pathogenicity]
DISP1: NM_001377229.1(DISP1):c.566C>T (p.Pro189Leu) [Conflicting classifications of pathogenicity]
FGFR1: NM_023110.3(FGFR1):c.1928G>A (p.Gly643Asp) [Likely pathogenic]
GLI2: NM_001374353.1(GLI2):c.4710G>C (p.Ter1570Tyr) [Likely pathogenic]
GLI2: NM_001374353.1(GLI2):c.2186G>A (p.Trp729Ter) [Likely pathogenic]

Vias biológicas (Reactome)

79 vias biológicas associadas aos genes desta condição.

PI3K Cascade PIP3 activates AKT signaling Signaling by FGFR1 amplification mutants Signaling by activated point mutants of FGFR1 FGFR1b ligand binding and activation FGFR1c ligand binding and activation FGFR1c and Klotho ligand binding and activation Constitutive Signaling by Aberrant PI3K in Cancer NCAM signaling for neurite out-growth Signal transduction by L1 Phospholipase C-mediated cascade: FGFR1 Downstream signaling of activated FGFR1 SHC-mediated cascade:FGFR1 PI-3K cascade:FGFR1 FRS-mediated FGFR1 signaling Negative regulation of FGFR1 signaling Signaling by FGFR1 in disease RAF/MAP kinase cascade PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling Signaling by plasma membrane FGFR1 fusions Epithelial-Mesenchymal Transition (EMT) during gastrulation Formation of paraxial mesoderm Class B/2 (Secretin family receptors) Hedgehog 'off' state Ligand-receptor interactions Hedgehog 'on' state Activation of SMO Signaling by NODAL Signaling by Activin Germ layer formation at gastrulation Formation of axial mesoderm Regulation of signaling by NODAL Degradation of GLI1 by the proteasome Degradation of GLI2 by the proteasome GLI3 is processed to GLI3R by the proteasome Signaling by activated point mutants of FGFR3 FGFR4 ligand binding and activation FGFR3b ligand binding and activation FGFR3c ligand binding and activation FGFR2c ligand binding and activation Activated point mutants of FGFR2 Phospholipase C-mediated cascade; FGFR2 Phospholipase C-mediated cascade; FGFR3 Phospholipase C-mediated cascade; FGFR4 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 FGFR2 signaling 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 Somitogenesis Nephron development POU5F1 (OCT4), SOX2, NANOG activate genes related to proliferation Formation of the anterior neural plate Transcription of NOTCH2NLB gene 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 Developmental Lineage of Multipotent Pancreatic Progenitor Cells Myogenesis Downregulation of SMAD2/3:SMAD4 transcriptional activity SMAD2/SMAD3:SMAD4 heterotrimer regulates transcription GLI proteins bind promoters of Hh responsive genes to promote transcription RUNX2 regulates chondrocyte maturation

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Publicações mais relevantes

Timeline de publicações
2 papers (10 anos)
#1

Novel sonic hedgehog gene variant in a patient with hyponatremia, microsomia, and midline defects; phenotype description in association with a variant of unknown significance [c.755_757del p.(Phe252del)] and an approach to salt-wasting in SHH-related adrenal disorders.

Journal of pediatric endocrinology &amp; metabolism : JPEM2023 Jun 27

To contribute a novel sonic hedgehog (SHH) gene variant in association with a novel-meagerly described phenotype and discuss SHH signaling pathway pathology. We present a 5-year-old boy with excessive hyponatremia and natriuresis, microform holoprosencephaly and microsomia, with morphologically intact hypothalamic-pituitary-adrenal (HPA) axis, and hypoaldosteronism, yet without hyperreninemia, hyperkalemia, dehydration episodes, or glucocorticoid insufficiency. Extensive workup excluded common causes of salt-wasting and revealed a novel variant of unknown significance on the sonic hedgehog (SHH) gene; NM_000193.4:c.755_757del (p.Phe252del), in heterozygosity. Salt-wasting in children is predominantly caused by central nervous system lesions, renal tubular dysfunction, or adrenal insufficiency. The SHH protein is a signaling molecule, essential in embryogenesis-including HPA axis differentiation. Inactivating SHH variants disrupt the signaling pathway, leading to dysplasia or dysfunction of target organs. What's new: • We analyze the patient's phenotype in the light of this novel variant • Patient's isolated aldosterone deficiency possibly implies a selective signaling defect affecting the development of adrenal zona glomerulosa • Unexplained hyporeninemia and hypokalemia in the context of hypoaldosteronism raise questions on SHH signaling pathophysiology.

#2

Microform holoprosencephaly with bilateral congenital elbow dislocation; increasing the phenotypic spectrum of Steinfeld syndrome.

American journal of medical genetics. Part A2016 Mar

Steinfeld syndrome (MIM #184705) was first reported in 1982. It is characterised by holoprosencephaly and limb defects, however other anomalies may also be present. Following the initial description, three further cases have been reported in the literature. We report on a 23-year-old girl, with features of microform holoprosencephaly and bilateral congenital elbow dislocation in association with hypoplastic radial heads. She was identified to have a variant in the CDON gene inherited from her father who had ocular hypotelorism, but no other clinical features. We discuss the clinical features of Steinfeld syndrome, and broaden the phenotypic spectrum of this condition. Structural analysis suggests that this variant could lead to destabilisation of binding of CDON with hedgehog proteins. Further work needs to be done to confirm whether mutations in the CDON gene are the cause of Steinfeld syndrome.

Publicações recentes

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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. Novel sonic hedgehog gene variant in a patient with hyponatremia, microsomia, and midline defects; phenotype description in association with a variant of unknown significance [c.755_757del p.(Phe252del)] and an approach to salt-wasting in SHH-related adrenal disorders.
    Journal of pediatric endocrinology &amp; metabolism : JPEM· 2023· PMID 37184081mais citado
  2. Microform holoprosencephaly with bilateral congenital elbow dislocation; increasing the phenotypic spectrum of Steinfeld syndrome.
    American journal of medical genetics. Part A· 2016· PMID 26728615mais citado
  3. A 13-year-old boy with a 7q36.1q36.3 deletion with additional findings.
    Am J Med Genet A· 2015· PMID 25257745recente
  4. Boc modifies the spectrum of holoprosencephaly in the absence of Gas1 function.
    Biol Open· 2014· PMID 25063195recente
  5. Dicentric Chromosome 14;18 Plus Two Additional CNVs in a Girl with Microform Holoprosencephaly and Turner Stigmata.
    Balkan J Med Genet· 2013· PMID 24778566recente

Bases de dados e fontes oficiais

Identificadores e referências canônicas usadas para montar este verbete.

  1. ORPHA:280200(Orphanet)
  2. MONDO:0017219(MONDO)
  3. GARD:17290(GARD (NIH))
  4. Variantes catalogadas(ClinVar)
  5. Busca completa no PubMed(PubMed)
  6. Q56013946(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

Holoprosencefalia microforma
Compêndio · Raras BR

Holoprosencefalia microforma

ORPHA:280200 · MONDO:0017219
Prevalência
1-9 / 100 000
Herança
Multigenic/multifactorial
CID-10
Q04.2 · Holoprosencefalia
CID-11
Início
Childhood, Infancy, Neonatal
Prevalência
0.0 (Europe)
MedGen
UMLS
C5393309
Wikidata
Papers 10a
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