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Hipotricose simples
ORPHA:55654CID-10 · L65.8CID-11 · EC21.2DOENÇA RARA

A hipotricose simples (HS) ou hipotricose simples hereditária (HHS) é caracterizada pela redução da pilosidade no couro cabeludo e no corpo (com cabelos ralos, finos e curtos) na ausência de outras anomalias.

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Introdução

O que você precisa saber de cara

📋

A hipotricose simples (HS) ou hipotricose simples hereditária (HHS) é caracterizada pela redução da pilosidade no couro cabeludo e no corpo (com cabelos ralos, finos e curtos) na ausência de outras anomalias.

Publicações científicas
74 artigos
Último publicado: 2025 Dec 24
Medicamentos
1 registrados
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1 medicamento registrado
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Escala de raridade

CLASSIFICAÇÃO ORPHANET · BRASIL 2024
<1 / 1 000 000
Ultra-rara
<1/50k
Muito rara
1/20k
Rara
1/10k
Pouco freq.
1/5k
Incomum
1/2k
Prevalência
0.0
Worldwide
Casos conhecidos
38
pacientes catalogados
Início
Childhood
🏥
SUS: Sem cobertura SUSScore: 0%
CID-10: L65.8
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Sinais e sintomas

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

Partes do corpo afetadas

🧬
Pele e cabelo
19 sintomas
👁️
Olhos
5 sintomas
👂
Ouvidos
1 sintomas

+ 8 sintomas em outras categorias

Características mais comuns

90%prev.
Cabelo esparso no couro cabeludo
Muito frequente (99-80%)
90%prev.
Pelos corporais esparsos
Muito frequente (99-80%)
90%prev.
Cílios esparsos
Muito frequente (99-80%)
90%prev.
Sobrancelha esparsa
Muito frequente (99-80%)
90%prev.
Alopecia
Muito frequente (99-80%)
55%prev.
Cabelo esparso
Frequente (79-30%)
33sintomas
Muito frequente (5)
Frequente (1)
Sem dados (27)

Os sintomas variam de pessoa para pessoa. Abaixo estão as 33 características clínicas mais associadas, ordenadas por frequência.

Cabelo esparso no couro cabeludoSparse scalp hair
Muito frequente (99-80%)90%
Pelos corporais esparsosSparse body hair
Muito frequente (99-80%)90%
Cílios esparsosSparse eyelashes
Muito frequente (99-80%)90%
Sobrancelha esparsaSparse eyebrow
Muito frequente (99-80%)90%
Alopecia
Muito frequente (99-80%)90%

Linha do tempo da pesquisa

Publicações por ano — veja quando o interesse científico cresceu
Anos de pesquisa1desde 2026
Total histórico74PubMed
Últimos 10 anos33publicações
Pico20236 papers
Linha do tempo
2026Hoje · 2026🧪 2018Primeiro ensaio clínico📈 2023Ano 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

7 genes identificados com associação a esta condição. Padrão de herança: Autosomal dominant, Autosomal recessive.

LPAR6Lysophosphatidic acid receptor 6Disease-causing germline mutation(s) inTolerante
FUNÇÃO

Binds to oleoyl-L-alpha-lysophosphatidic acid (LPA). Intracellular cAMP is involved in the receptor activation. Important for the maintenance of hair growth and texture

LOCALIZAÇÃO

Cell membrane

VIAS BIOLÓGICAS (2)
G alpha (q) signalling eventsP2Y receptors
MECANISMO DE DOENÇA

Woolly hair autosomal recessive 1 with or without hypotrichosis

A hair shaft disorder characterized by fine and tightly curled hair. Compared to normal curly hair that is observed in some populations, woolly hair grows slowly and stops growing after a few inches. Under light microscopy, woolly hair shows some structural anomalies, including trichorrhexis nodosa and tapered ends. Some individuals exhibit features of hypotrichosis.

EXPRESSÃO TECIDUAL(Ubíquo)
Vagina
65.9 TPM
Esôfago - Mucosa
55.4 TPM
Próstata
55.2 TPM
Glândula salivar
47.4 TPM
Cervix Endocervix
39.5 TPM
OUTRAS DOENÇAS (3)
hypotrichosis 8isolated familial wooly hair disorderhypotrichosis simplex
HGNC:15520UniProt:P43657
DSG4Desmoglein-4Disease-causing germline mutation(s) inTolerante
FUNÇÃO

A component of desmosome cell-cell junctions which are required for positive regulation of cellular adhesion (By similarity). Coordinates the transition from proliferation to differentiation in hair follicle keratinocytes (By similarity). Plays a role in moderating lymphocyte migration to inflamed skin and maintaining homeostasis of the epidermal inflammatory response (By similarity)

LOCALIZAÇÃO

Cell membraneCell junction, desmosome

VIAS BIOLÓGICAS (1)
Formation of the cornified envelope
MECANISMO DE DOENÇA

Hypotrichosis 6

A condition characterized by the presence of less than the normal amount of hair and abnormal hair follicles and shafts, which are thin and atrophic. The disorder affects the trunk and extremities as well as the scalp, and the eyebrows and eyelashes may also be involved, whereas beard, pubic, and axillary hairs are largely spared. In addition, patients can develop hyperkeratotic follicular papules, erythema, and pruritus in affected areas. In some patients with congenital hypotrichosis, monilethrix-like hairs showing elliptical nodes have been observed. HYPT6 inheritance is autosomal recessive.

EXPRESSÃO TECIDUAL(Baixa expressão)
Testículo
0.6 TPM
Esôfago - Mucosa
0.5 TPM
Vagina
0.5 TPM
Skin Not Sun Exposed Suprapubic
0.3 TPM
Skin Sun Exposed Lower leg
0.2 TPM
OUTRAS DOENÇAS (3)
hypotrichosis 6monilethrixhypotrichosis simplex
HGNC:21307UniProt:Q86SJ6
APCDD1Protein APCDD1Disease-causing germline mutation(s) inModerado
FUNÇÃO

Negative regulator of the Wnt signaling pathway. Inhibits Wnt signaling in a cell-autonomous manner and functions upstream of beta-catenin. May act via its interaction with Wnt and LRP proteins. May play a role in colorectal tumorigenesis

LOCALIZAÇÃO

Cell membrane

MECANISMO DE DOENÇA

Hypotrichosis 1

A rare form of non-syndromic hereditary hypotrichosis without characteristic hair shaft anomalies. Affected individuals typically show normal hair at birth, but hair loss and thinning of the hair shaft start during early childhood and progress with age. HYPT1 inheritance is autosomal dominant.

INTERAÇÕES PROTEICAS (3)
OUTRAS DOENÇAS (2)
hypotrichosis 1hypotrichosis simplex
HGNC:15718UniProt:Q8J025
LIPHLipase member HDisease-causing germline mutation(s) inTolerante
FUNÇÃO

Hydrolyzes specifically phosphatidic acid (PA) to produce 2-acyl lysophosphatidic acid (LPA; a potent bioactive lipid mediator) and fatty acid. Does not hydrolyze other phospholipids, like phosphatidylserine (PS), phosphatidylcholine (PC) and phosphatidylethanolamine (PE) or triacylglycerol (TG)

LOCALIZAÇÃO

SecretedCell membrane

VIAS BIOLÓGICAS (1)
Synthesis of PA
MECANISMO DE DOENÇA

Hypotrichosis 7

A condition characterized by the presence of less than the normal amount of hair. Affected individuals have sparse or absent scalp, axillary and body hair and sparse eyebrows and eyelashes. HYPT7 inheritance is autosomal recessive.

VIAS REACTOME (1)
EXPRESSÃO TECIDUAL(Tecido-específico)
Estômago
28.5 TPM
Glândula salivar
19.9 TPM
Esôfago - Mucosa
19.0 TPM
Cólon transverso
17.6 TPM
Pulmão
15.8 TPM
INTERAÇÕES PROTEICAS (3)
OUTRAS DOENÇAS (3)
hypotrichosis 7hypotrichosis simplexisolated familial wooly hair disorder
HGNC:18483UniProt:Q8WWY8
RPL21Large ribosomal subunit protein eL21Disease-causing germline mutation(s) inAltamente restrito
FUNÇÃO

Component of the large ribosomal subunit (PubMed:12962325, PubMed:23636399, PubMed:25901680, PubMed:25957688). The ribosome is a large ribonucleoprotein complex responsible for the synthesis of proteins in the cell (PubMed:12962325, PubMed:23636399, PubMed:25901680, PubMed:25957688)

LOCALIZAÇÃO

Cytoplasm, cytosolCytoplasmEndoplasmic reticulum

VIAS BIOLÓGICAS (10)
Formation of a pool of free 40S subunitsRibosome Quality Control (RQC) complex extracts and degrades nascent peptideMajor pathway of rRNA processing in the nucleolus and cytosolGTP hydrolysis and joining of the 60S ribosomal subunitL13a-mediated translational silencing of Ceruloplasmin expression
MECANISMO DE DOENÇA

Hypotrichosis 12

A form of hypotrichosis, a condition characterized by the presence of less than the normal amount of hair and abnormal hair follicles and shafts, which are thin and atrophic. The extent of scalp and body hair involvement can be very variable, within as well as between families. HYPT12 patients have normal scalp hair density at birth. Hair loss begins during the first 6 months of life and gradually progresses to nearly complete loss of scalp hair. The remaining hairs grow slowly and are thin, sparse, dry, and fragile. Body hair, axillary and pubic hair, eyebrows and eyelashes are also sparse or absent. HYPT12 inheritance is autosomal dominant.

EXPRESSÃO TECIDUAL(Ubíquo)
Ovário
2224.4 TPM
Linfócitos
1617.1 TPM
Cervix Ectocervix
1567.4 TPM
Cervix Endocervix
1360.3 TPM
Fallopian Tube
1351.9 TPM
OUTRAS DOENÇAS (2)
hypotrichosis 12hypotrichosis simplex
HGNC:10313UniProt:P46778
SNRPESmall nuclear ribonucleoprotein EDisease-causing germline mutation(s) inDesconhecido
FUNÇÃO

Plays a role in pre-mRNA splicing as a core component of the spliceosomal U1, U2, U4 and U5 small nuclear ribonucleoproteins (snRNPs), the building blocks of the spliceosome (PubMed:11991638, PubMed:18984161, PubMed:19325628, PubMed:23246290, PubMed:23333303, PubMed:25555158, PubMed:26912367, PubMed:28076346, PubMed:28502770, PubMed:28781166, PubMed:32494006). Component of both the pre-catalytic spliceosome B complex and activated spliceosome C complexes (PubMed:11991638, PubMed:28076346, PubMed

LOCALIZAÇÃO

Cytoplasm, cytosolNucleus

VIAS BIOLÓGICAS (2)
snRNP AssemblySARS-CoV-2 modulates host translation machinery
MECANISMO DE DOENÇA

Hypotrichosis 11

A form of hypotrichosis, a condition characterized by the presence of less than the normal amount of hair and abnormal hair follicles and shafts, which are thin and atrophic. The extent of scalp and body hair involvement can be very variable, within as well as between families. HYPT11 is an autosomal dominant form characterized by scanty or absent eyebrows and a highly variable degree of alopecia since birth, ranging from slight thinning of scalp and axillary hair to complete loss of scalp and body hair. Pubic hair remains mainly unaffected.

EXPRESSÃO TECIDUAL(Ubíquo)
Linfócitos
158.7 TPM
Fibroblastos
125.3 TPM
Ovário
89.3 TPM
Cervix Endocervix
82.1 TPM
Cervix Ectocervix
72.5 TPM
OUTRAS DOENÇAS (2)
hypotrichosis 11hypotrichosis simplex
HGNC:11161UniProt:P62304
LSSLanosterol synthaseDisease-causing germline mutation(s) inTolerante
FUNÇÃO

Key enzyme in the cholesterol biosynthesis pathway. Catalyzes the cyclization of (S)-2,3 oxidosqualene to lanosterol, a reaction that forms the sterol nucleus (PubMed:14766201, PubMed:26200341, PubMed:7639730). Through the production of lanosterol may regulate lens protein aggregation and increase transparency (PubMed:26200341)

LOCALIZAÇÃO

Endoplasmic reticulum membrane

VIAS BIOLÓGICAS (2)
Lanosterol biosynthesisActivation of gene expression by SREBF (SREBP)
MECANISMO DE DOENÇA

Cataract 44

An opacification of the crystalline lens of the eye that frequently results in visual impairment or blindness. Opacities vary in morphology, are often confined to a portion of the lens, and may be static or progressive. In general, the more posteriorly located and dense an opacity, the greater the impact on visual function.

EXPRESSÃO TECIDUAL(Ubíquo)
Brain Spinal cord cervical c-1
93.6 TPM
Pituitária
81.3 TPM
Ovário
81.1 TPM
Cerebelo
72.7 TPM
Cervix Ectocervix
70.7 TPM
OUTRAS DOENÇAS (7)
hypotrichosis 14alopecia-intellectual disability syndrome 4cataract 44autosomal recessive palmoplantar keratoderma and congenital alopecia
HGNC:6708UniProt:P48449

Medicamentos e terapias

BIMATOPROSTPhase 4

Mecanismo: Prostanoid FP receptor agonist

Ver mais no OpenTargets

Variantes genéticas (ClinVar)

208 variantes patogênicas registradas no ClinVar.

🧬 LSS: NM_002340.6(LSS):c.676_685dup (p.Leu229fs) ()
🧬 LSS: NM_002340.6(LSS):c.775del (p.Leu259fs) ()
🧬 LSS: GRCh37/hg19 21q22.3(chr21:44762021-48097372)x1 ()
🧬 LSS: NM_002340.6(LSS):c.1671-72G>A ()
🧬 LSS: NM_002340.6(LSS):c.1988+1G>A ()
Ver todas no ClinVar

Classificação de variantes (ClinVar)

Distribuição de 3 variantes classificadas pelo ClinVar.

3
Patogênica (100.0%)
VARIANTES MAIS SIGNIFICATIVAS
CDH3: NM_001793.6(CDH3):c.665_666dup (p.Ser223fs) [Pathogenic]
LIPH: NM_139248.3(LIPH):c.736T>A (p.Cys246Ser) [Pathogenic/Likely pathogenic]
ERCC2: NM_000400.4(ERCC2):c.2164C>T (p.Arg722Trp) [Pathogenic]

Diagnóstico

Os sinais que médicos procuram e os exames que confirmam

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Tratamento e manejo

Remédios, cuidados de apoio e o que precisa acompanhar

Pipeline de tratamentos
Pipeline regulatório — de medicamentos já aprovados a drogas em pesquisa exploratória.
Aprovado1
2Fase 21
Medicamentos catalogadosEnsaios clínicos· 1 medicamento · 1 ensaio
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Carregando informações de tratamento...

Onde tratar no SUS

Hospitais de referência no Brasil e o protocolo oficial do SUS (PCDT)

🇧🇷 Atendimento SUS — Hipotricose simples

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Selecione um estado ou use sua localização para ver resultados.

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

1 ensaios clínicos encontrados.

Distribuição por fase
Ver todos no ClinicalTrials.gov
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Publicações mais relevantes

Timeline de publicações
32 papers (10 anos)

Publicações recentes

Ver todas no PubMed

📚 EuropePMC56 artigos no totalmostrando 33

2025

Novel biallelic LSS variants in autosomal recessive hypotrichosis simplex: insights from a multi-omics approach.

Human genetics
2026

Hypotrichosis simplex type 7: A rare cause of non-syndromic woolly hair.

Indian journal of dermatology, venereology and leprology
2024

Treatment of hypotrichosis simplex of the scalp with the combination of botanic extracts and minoxidil: a case report.

Frontiers in genetics
2025

Autosomal recessive hereditary hypotrichosis simplex: A case report.

JAAD case reports
2025

Hereditary hypotrichosis simplex with SNRPE gene mutation.

Indian journal of dermatology, venereology and leprology
2024

Isotretinoin-induced hair growth in a case of hereditary hypotrichosis simplex of the scalp: A promising therapeutic approach.

JAAD case reports
2024

Two novel mutations in LSS gene associated with hypotrichosis simplex in a Chinese family.

Journal of cosmetic dermatology
2024

[Genetic analysis of a child with Hypotrichosis simplex].

Zhonghua yi xue yi chuan xue za zhi = Zhonghua yixue yichuanxue zazhi = Chinese journal of medical genetics
2023

A case of LSS-associated congenital nuclear cataract with hypotrichosis and literature review.

American journal of medical genetics. Part A
2023

Development of Woolly Hair and Hairlessness in a CRISPR-Engineered Mutant Mouse Model with KRT71 Mutations.

Cells
2023

A novel heterozygous missense variant in ribosomal protein L21 associated with familial hypotrichosis simplex.

Clinical and experimental dermatology
2023

Familial hypotrichosis simplex of the scalp associated with a novel heterozygous nonsense variant in CDSN.

Clinical and experimental dermatology
2023

Novel blended SNRPE-related spliceosomopathy phenotype characterized by microcephaly and congenital atrichia.

American journal of medical genetics. Part A
2022

A novel homozygous mutation in LSS gene possibly causes hypotrichosis simplex in two siblings of a Tibetan family from the western Sichuan province of China.

Frontiers in physiology
2023

Successful treatment of hereditary hypotrichosis simplex by platelet rich plasma injection with topical minoxidil 2.

The Journal of dermatological treatment
2022

A Novel Pathogenic CDH3 Variant underlying Heredity Hypotrichosis Simplex detected by Whole-Exome Sequencing (WES)-A Case Report.

Cold Spring Harbor molecular case studies
2022

Treatment of hereditary hypotrichosis simplex of the scalp with oral minoxidil and growth factors.

Dermatologic therapy
2022

Hypotrichosis simplex of the scalp and peeling skin disease, two sides of the same coin.

Journal of the European Academy of Dermatology and Venereology : JEADV
2021

Application of topical gentamicin-a new era in the treatment of genodermatosis.

World journal of pediatrics : WJP
2022

Diffuse congenital hypotrichosis simplex with associated hair shaft fragility.

The Australasian journal of dermatology
2021

Four hypotrichosis families with mutations in the gene LSS presenting with and without neurodevelopmental phenotypes.

American journal of medical genetics. Part A
2021

A Nonsense Variant in Hephaestin Like 1 (HEPHL1) Is Responsible for Congenital Hypotrichosis in Belted Galloway Cattle.

Genes
2021

Additional causal SNRPE mutations in hereditary hypotrichosis simplex.

The British journal of dermatology
2021

Novel mutations in Chinese hypotrichosis simplex patients associated with LSS gene.

The Journal of dermatology
2020

Reading through genetic 'stop signs': a therapeutic strategy in genetic skin disease.

The British journal of dermatology
2019

Autosomal-dominant hypotrichosis with woolly hair: Novel gene locus on chromosome 4q35.1-q35.2.

PloS one
2020

Treatment of hereditary hypotrichosis simplex of the scalp with topical gentamicin.

The British journal of dermatology
2020

Mutations in the CDSN gene cause peeling skin disease and hypotrichosis simplex of the scalp.

The Journal of dermatology
2019

[Involvement of cholesterol metabolism in hypotrichosis simplex].

Annales de dermatologie et de venereologie
2019

Biallelic pathogenic variants in the lanosterol synthase gene LSS involved in the cholesterol biosynthesis cause alopecia with intellectual disability, a rare recessive neuroectodermal syndrome.

Genetics in medicine : official journal of the American College of Medical Genetics
2018

Bi-allelic Mutations in LSS, Encoding Lanosterol Synthase, Cause Autosomal-Recessive Hypotrichosis Simplex.

American journal of human genetics
2018

A novel insertion mutation of CDSN responsible for hypotrichosis simplex of scalp in a Chinese family.

Clinical and experimental dermatology
2017

Hereditary hypotrichosis simplex of the scalp.

Cutis
Ver todos os 56 no EuropePMC

Associações

Organizações que acompanham esta doença — pra ter apoio e orientação

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Comunidades

Grupos ativos de quem convive com esta doença aqui no Raras

Ainda não existe comunidade no Raras para Hipotricose simples

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Doenças relacionadas

Doenças com sintomas parecidos — ajudam quem ainda está buscando diagnóstico

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. Hypotrichosis simplex type 7: A rare cause of non-syndromic woolly hair.
    Indian journal of dermatology, venereology and leprology· 2026· PMID 39912188mais citado
  2. Novel biallelic LSS variants in autosomal recessive hypotrichosis simplex: insights from a multi-omics approach.
    Human genetics· 2025· PMID 41442087mais citado
  3. Autosomal recessive hereditary hypotrichosis simplex: A case report.
    JAAD case reports· 2025· PMID 39845463mais citado
  4. Hereditary hypotrichosis simplex with SNRPE gene mutation.
    Indian journal of dermatology, venereology and leprology· 2025· PMID 39635794mais citado
  5. Treatment of hypotrichosis simplex of the scalp with the combination of botanic extracts and minoxidil: a case report.
    Frontiers in genetics· 2024· PMID 39902296mais citado

Bases de dados e fontes oficiais

Identificadores e referências canônicas usadas para montar este verbete.

  1. ORPHA:55654(Orphanet)
  2. MONDO:0018914(MONDO)
  3. GARD:9170(GARD (NIH))
  4. Variantes catalogadas(ClinVar)
  5. Busca completa no PubMed(PubMed)
  6. Q1641483(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

Hipotricose simples
Compêndio · Raras BR

Hipotricose simples

ORPHA:55654 · MONDO:0018914
Prevalência
<1 / 1 000 000
Casos
38 casos conhecidos
Herança
Autosomal dominant, Autosomal recessive
CID-10
L65.8 · Outras formas, especificadas, não cicatriciais, de perda de cabelos ou pêlos
CID-11
Medicamentos
1 registrados
Início
Childhood
Prevalência
0.0 (Worldwide)
MedGen
UMLS
C0020678
EuropePMC
Wikidata
Papers 10a
DiscussaoAtiva

Nenhuma novidade ainda. O agente esta monitorando.

0membros
0novidades