A disgenesia gonadal completa 46,XY (46,XY CGD) é um distúrbio do desenvolvimento sexual (DDS) associado a anomalias no desenvolvimento gonadal que resultam na presença de genitália externa e interna feminina, apesar do cariótipo 46,XY.
Introdução
O que você precisa saber de cara
A disgenesia gonadal completa 46,XY (46,XY CGD) é um distúrbio do desenvolvimento sexual (DDS) associado a anomalias no desenvolvimento gonadal que resultam na presença de genitália externa e interna feminina, apesar do cariótipo 46,XY.
Escala de raridade
<1/50kMuito rara
1/20kRara
1/10kPouco freq.
1/5kIncomum
1/2k
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Sinais e sintomas
O que aparece no corpo e com que frequência cada sintoma acontece
Partes do corpo afetadas
+ 65 sintomas em outras categorias
Características mais comuns
Os sintomas variam de pessoa para pessoa. Abaixo estão as 100 características clínicas mais associadas, ordenadas por frequência.
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Genética e causas
O que está alterado no DNA e como passa nas famílias
Genes associados
13 genes identificados com associação a esta condição. Padrão de herança: Autosomal dominant, Autosomal recessive, X-linked recessive, Y-linked.
The C-terminal part of the desert 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 (N-product and C-product) followed by the covalent attachment of a cholesterol moiety to the C-terminal of the newly generated N-product (DHH-N) (By similarity). Both activities occur in the endoplasmic reticulum (By similarity). Once cleaved, the C-product is degraded in t
Cell membraneEndoplasmic reticulum membraneGolgi apparatus membraneSecreted
46,XY gonadal dysgenesis with minifascicular neuropathy
An autosomal recessive disorder characterized by gonadal dysgenesis associated with polyneuropathy. Genital anomalies include the presence of a testis on one side and a streak or an absent gonad at the other, persistence of Muellerian duct structures, and a variable degree of genital ambiguity.
Cytosolic aldo-keto reductase that catalyzes NADPH-dependent reduction of ketosteroids to hydroxysteroids. Displays broad substrate specificity with distinct positional and stereochemistry, primarily generating 3alpha/beta-, 17beta- and 20alpha-hydroxysteroids (PubMed:10634139, PubMed:10998348, PubMed:11158055, PubMed:14672942, PubMed:1530633, PubMed:12604236, PubMed:19218247, PubMed:21802064, PubMed:7650035). Required for male sex determination as a component of the 'backdoor' androgen biosynth
Cytoplasm, cytosol
46,XY sex reversal 8
A disorder of sex development. Affected individuals have a 46,XY karyotype but present as phenotypically normal females.
Cytosolic aldo-keto reductase that catalyzes NADPH-dependent reduction of ketosteroids to hydroxysteroids. Displays broad substrate specificity with distinct positional and stereochemistry, primarily generating 3alpha-hydroxysteroids, but also 3beta-, 17beta- and 20alpha-hydroxysteroids (PubMed:8920937, PubMed:9716498, PubMed:10998348, PubMed:12416991, PubMed:11995921, PubMed:12604236, PubMed:14672942, PubMed:19218247, PubMed:21802064, PubMed:11514561, PubMed:15929998, PubMed:17034817, PubMed:17
Cytoplasm, cytosol
46,XY sex reversal 8
A disorder of sex development. Affected individuals have a 46,XY karyotype but present as phenotypically normal females.
Transcription regulator that plays a central role in heart morphogenesis and development of coronary vessels from epicardium, by regulating genes that are essential during cardiogenesis. Essential cofactor that acts via the formation of a heterodimer with transcription factors of the GATA family GATA4, GATA5 and GATA6. Such heterodimer can both activate or repress transcriptional activity, depending on the cell and promoter context. Also required in gonadal differentiation, possibly be regulatin
Nucleus
Tetralogy of Fallot
A congenital heart anomaly which consists of pulmonary stenosis, ventricular septal defect, dextroposition of the aorta (aorta is on the right side instead of the left) and hypertrophy of the right ventricle. In this condition, blood from both ventricles (oxygen-rich and oxygen-poor) is pumped into the body often causing cyanosis.
Transcriptional activator. Essential for sexual differentiation and formation of the primary steroidogenic tissues (PubMed:27378692). Binds to the Ad4 site found in the promoter region of steroidogenic P450 genes such as CYP11A, CYP11B and CYP21B. Also regulates the AMH/Muellerian inhibiting substance gene as well as the AHCH and STAR genes. 5'-YCAAGGYC-3' and 5'-RRAGGTCA-3' are the consensus sequences for the recognition by NR5A1 (PubMed:27378692). The SFPQ-NONO-NR5A1 complex binds to the CYP17
Nucleus
46,XY sex reversal 3
A condition characterized by male-to-female sex reversal in the presence of a normal 46,XY karyotype.
Component of a protein kinase signal transduction cascade (PubMed:9808624). Activates the ERK and JNK kinase pathways by phosphorylation of MAP2K1 and MAP2K4 (PubMed:9808624). May phosphorylate the MAPK8/JNK1 kinase (PubMed:17761173). Activates CHUK and IKBKB, the central protein kinases of the NF-kappa-B pathway (PubMed:9808624)
46,XY sex reversal 6
A disorder of sex development. Affected individuals have a 46,XY karyotype but present as phenotypically normal females.
ATP-binding RNA helicase that plays a role in maturation of the small ribosomal subunit in ribosome biogenesis (PubMed:30582406). Required for the release of the U3 snoRNP from pre-ribosomal particles (PubMed:30582406). Part of the small subunit (SSU) processome, first precursor of the small eukaryotic ribosomal subunit. During the assembly of the SSU processome in the nucleolus, many ribosome biogenesis factors, an RNA chaperone and ribosomal proteins associate with the nascent pre-rRNA and wor
Nucleus, nucleolusCytoplasmNucleus membrane
Neurodevelopmental disorder with brain anomalies and with or without vertebral or cardiac anomalies
An autosomal recessive neurodevelopmental disorder characterized by severe developmental delay, impaired intellectual development, hypotonia, brain anomalies including cortical volume loss, corpus callosum dysgenesis and cerebellar hypoplasia, and variable dysmorphic features. Patients may have platyspondyly, scoliosis, and cardiac anomalies.
Component of a Polycomb group (PcG) multiprotein PRC1-like complex, a complex class required to maintain the transcriptionally repressive state of many genes, including Hox genes, throughout development (PubMed:21282530). PcG PRC1 complex acts via chromatin remodeling and modification of histones; it mediates monoubiquitination of histone H2A 'Lys-119', rendering chromatin heritably changed in its expressibility (PubMed:21282530). Binds to histone H3 trimethylated at 'Lys-9' (H3K9me3) or at 'Lys
NucleusChromosome
46,XY sex reversal 5
A disorder of sex development. Affected individuals have a 46,XY karyotype but present as phenotypically normal females.
Transcription factor that plays an important role in cellular development and cell survival (PubMed:7862533). Recognizes and binds to the DNA sequence 5'-GCG(T/G)GGGCG-3' (PubMed:17716689, PubMed:25258363, PubMed:7862533). Regulates the expression of numerous target genes, including EPO. Plays an essential role for development of the urogenital system. It has a tumor suppressor as well as an oncogenic role in tumor formation. Function may be isoform-specific: isoforms lacking the KTS motif may a
NucleusNucleus, nucleolusCytoplasmNucleus speckleNucleus, nucleoplasm
Frasier syndrome
Characterized by a slowly progressing nephropathy leading to renal failure in adolescence or early adulthood, male pseudohermaphroditism, and no Wilms tumor. As for histological findings of the kidneys, focal glomerular sclerosis is often observed. There is phenotypic overlap with Denys-Drash syndrome. Inheritance is autosomal dominant.
Transcription factor that plays a key role in male sex determination and differentiation by controlling testis development and male germ cell proliferation. Plays a central role in spermatogonia by inhibiting meiosis in undifferentiated spermatogonia and promoting mitosis, leading to spermatogonial development and allowing abundant and continuous production of sperm. Acts both as a transcription repressor and activator: prevents meiosis by restricting retinoic acid (RA)-dependent transcription a
Nucleus
Testicular germ cell tumor
A common malignancy in males representing 95% of all testicular neoplasms. TGCTs have various pathologic subtypes including: unclassified intratubular germ cell neoplasia, seminoma (including cases with syncytiotrophoblastic cells), spermatocytic seminoma, embryonal carcinoma, yolk sac tumor, choriocarcinoma, and teratoma.
Transcription factor that plays a key role in chondrocytes differentiation and skeletal development (PubMed:24038782). Specifically binds the 5'-ACAAAG-3' DNA motif present in enhancers and super-enhancers and promotes expression of genes important for chondrogenesis, including cartilage matrix protein-coding genes COL2A1, COL4A2, COL9A1, COL11A2 and ACAN, SOX5 and SOX6 (PubMed:8640233). Also binds to some promoter regions (By similarity). Plays a central role in successive steps of chondrocyte
Nucleus
Campomelic dysplasia
A rare, often lethal, osteochondrodysplasia characterized by congenital bowing and angulation of long bones. Other skeletal defects include unusually small scapula, deformed pelvis and spine, and a missing pair of ribs. Craniofacial and ear defects are common. Most patients die soon after birth due to respiratory distress which has been attributed to hypoplasia of the tracheobronchial cartilage and small thoracic cage. Up to two-thirds of affected XY individuals have genital defects or may develop as phenotypic females.
Transcriptional regulator that controls a genetic switch in male development (PubMed:11563911). It is necessary and sufficient for initiating male sex determination by directing the development of supporting cell precursors (pre-Sertoli cells) as Sertoli rather than granulosa cells (PubMed:16414182, PubMed:16996051). Involved in different aspects of gene regulation including promoter activation or repression (PubMed:9525897). Binds to the DNA consensus sequence 5'-[AT]AACAA[AT]-3' (PubMed:115639
Nucleus speckleCytoplasmNucleus
46,XY sex reversal 1
A condition characterized by male-to-female sex reversal in the presence of a normal 46,XY karyotype. Patients manifest rapid and early degeneration of their gonads, which are present in the adult as 'streak gonads', consisting mainly of fibrous tissue and variable amounts of ovarian stroma. As a result these patients do not develop secondary sexual characteristics at puberty. The external genitalia in these subjects are completely female, and Muellerian structures are normal.
Nuclear receptor that lacks a DNA-binding domain and acts as a corepressor that inhibits the transcriptional activity of other nuclear receptors through heterodimeric interactions (PubMed:12482977, PubMed:32433991). Component of a cascade required for the development of the hypothalamic-pituitary-adrenal-gonadal axis (PubMed:7990953, PubMed:8675564). May also have a role in the development of the embryo and in the maintenance of embryonic stem cell pluripotency (By similarity)
NucleusCytoplasm
Adrenal hypoplasia, congenital
A disorder of adrenal gland development characterized by absence of the permanent zone of the adrenal cortex, structural disorganization of the adrenal glands, adrenal insufficiency and profound hormonal deficiencies. AHC patients manifest primary adrenal failure usually in early infancy, and hypogonadotropic hypogonadism leading to absent or incomplete sexual maturation. AHC can be inherited in an X-linked or autosomal recessive pattern.
Variantes genéticas (ClinVar)
99 variantes patogênicas registradas no ClinVar.
Vias biológicas (Reactome)
39 vias biológicas associadas aos genes desta condição.
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Mostrando amostra de 4 publicações de um total de 32
46, XY Complete Gonadal Dysgenesis (Swyer Syndrome) Presenting as Primary Amenorrhea in a Normomorphic Adult Female From Kakamega, Kenya.
Differences/disorders of sex development (DSDs) are a diverse group of congenital conditions that result in disagreement between an individual's sex chromosomes, gonads, and/or anatomical sex. The 46, XY DSD group is vast and includes various conditions caused by genetic variants, hormonal imbalances, or abnormal sensitivity to testicular hormones, leading to varying degrees of under-virilization. A 19-year-old phenotypically normal female from Kakamega, Kenya, presented with primary amenorrhea. Physical examination revealed Tanner stage 3 breast development, Tanner stage 4 pubic hair, normal external genitalia, and a gynoid body shape. Hormonal profile tests indicated hypergonadotropic hypogonadism with normal 17-hydroxyprogesterone and testosterone levels. MRI revealed a hypoplastic uterus and absent ovaries. Karyotyping confirmed a 46, XY genotype, leading to the diagnosis of 46, XY complete gonadal dysgenesis (Swyer syndrome). Swyer syndrome is a rare disorder of sex development, characterized by unambiguous female genitalia, bilateral streak gonads, and elevated gonadotropin levels in individuals with a 46, XY karyotype. The condition results from abnormal gonadal development due to mutations in testis-determining factors, most commonly the SRY gene. Patients typically present with primary amenorrhea and seldom have secondary sexual characteristics as this patient had. Management includes hormone replacement therapy and gonadectomy because of the increased risk of gonadal tumors. The patient was educated about her condition, initiated on combined contraceptive pills, and counseled on exploratory laparoscopic gonadectomy. This case highlights the importance of a comprehensive diagnostic approach in patients with primary amenorrhea, keeping in mind that patients with disorders of sex development may have developed secondary sexual characteristics. The purpose of this overview is to: 1.. To describe the clinical characteristics of nonsyndromic disorders of testicular development; 2.. To review the genetic causes of nonsyndromic disorders of testicular development and conditions that may be in the differential diagnosis; 3.. To provide an evaluation strategy to identify the genetic cause of nonsyndromic disorders of testicular development (when possible); 4.. To inform management regarding sex of rearing, medical/surgical intervention (when appropriate), hormone therapy, and psychosocial aspects of care; 5.. To inform genetic risk assessment in family members of a proband.
A case of late diagnosis and management of 46 XY complete gonadal dysgenesis in adulthood.
Novel pathogenic mutations in disorders of sex development associated genes cause 46,XY complete gonadal dysgenesis.
Disorders of sex development (DSDs) are congenital conditions in which chromosomal, gonadal and sex is atypical. It is difficult to diagnose and manage patients with DSD in clinical practice, and the molecular etiology of DSD is still not completely understood. Here, we identified two novel pathogenic mutations from three unrelated Chinese patients with 46,XY complete gonadal dysgenesis (CGD) that is a clinical subgroup of DSD by whole exome sequencing. A novel mutation in the SRY gene (c.161delG) was identified in the first patient, and the second patient carried a novel missense mutation in the MAP3K1 gene (c.2117T>G). Bioinformatics analysis found that the deletion of SRY (c.161delG) led to a premature stop codon at amino acid 59 in the SRY protein, which resulted in lacking the DNA binding domain of SRY protein. Functional studies found that the missense mutation in the MAP3K1 gene (c.2117T>G) could interfere with the gene function through increasing the phosphorylation of the downstream targets of MAP3K1, ERK1/2 and p38, which resulted in reducing testis-determining factor SOX9 expression and increasing ovary-promoting factor β-catenin activity. According to the American college of medical genetics and genomics (ACMG) standards and guidelines, these mutations were categorized as "pathogenic" mutations. Thus, our findings provide two novel pathogenic mutations associated with 46,XY CGD that can improve the etiological diagnosis for 46,XY CGD. ABBREVIATIONS.
Functional Analysis of Mutations at Codon 127 of the SRY Gene Associated with 46,XY Complete Gonadal Dysgenesis.
Complete gonadal dysgenesis (CGD) is characterized by an incomplete differentiation of the genital organs in a patient with a 46,XY karyotype. It is induced by mutations in the sex-determining region Y (SRY) gene which plays a key role in testis-determining pathways. The aim of this study was to investigate the possible pathogenic nature of a novel SRY mutation (p.Y127H) identified in a 46,XY female patient. To determine the effect of this mutation on SRY function, we studied its impact on DNA interaction by electrophoretic mobility shift assays. Since tyrosine 127 is close to the C-terminal nuclear localization signal of SRY, we conducted HA-SRY protein expression to observe the impact of the mutation on the nuclear import function in transfected cells. Our results showed that the Y127H mutation nearly abolishes the DNA-binding capacity of SRY and strongly impairs the nuclear localization of the mutated protein. Together with a previously described mutation analyzed in parallel in this paper (p.Y127C), our results highlight this tyrosine residue as a crucial structural determinant of the high mobility group box domain. This is the first report to explain the molecular mechanism of the Y127H mutation causing sex reversal and gives new insights for clinical practice to benefit patients with disorders of sex development.
Publicações recentes
STARD9 and CDK5RAP2-Novel Candidate Genes for 46,XY Complete Gonadal Dysgenesis.
Perspective on postoperative hormone replacement therapy and fertility preservation in Swyer syndrome with dysgerminoma: a case series and literature review.
Isodicentric Y chromosome with SRY duplication in a female with complete gonadal dysgenesis.
46, XY Complete Gonadal Dysgenesis (Swyer Syndrome) Presenting as Primary Amenorrhea in a Normomorphic Adult Female From Kakamega, Kenya.
Case report: Rare heterozygous variant in the NR5A1 gene causing 46,XY complete gonadal dysgenesis with a non-communicating rudimentary uterus.
📚 EuropePMC25 artigos no totalmostrando 4
46, XY Complete Gonadal Dysgenesis (Swyer Syndrome) Presenting as Primary Amenorrhea in a Normomorphic Adult Female From Kakamega, Kenya.
Clinical case reportsA case of late diagnosis and management of 46 XY complete gonadal dysgenesis in adulthood.
Ginekologia polskaNovel pathogenic mutations in disorders of sex development associated genes cause 46,XY complete gonadal dysgenesis.
GeneFunctional Analysis of Mutations at Codon 127 of the SRY Gene Associated with 46,XY Complete Gonadal Dysgenesis.
Sexual development : genetics, molecular biology, evolution, endocrinology, embryology, and pathology of sex determination and differentiationAssociações
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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.
- 46, XY Complete Gonadal Dysgenesis (Swyer Syndrome) Presenting as Primary Amenorrhea in a Normomorphic Adult Female From Kakamega, Kenya.
- A case of late diagnosis and management of 46 XY complete gonadal dysgenesis in adulthood.
- Novel pathogenic mutations in disorders of sex development associated genes cause 46,XY complete gonadal dysgenesis.
- Functional Analysis of Mutations at Codon 127 of the SRY Gene Associated with 46,XY Complete Gonadal Dysgenesis.Sexual development : genetics, molecular biology, evolution, endocrinology, embryology, and pathology of sex determination and differentiation· 2017· PMID 28787711mais citado
- STARD9 and CDK5RAP2-Novel Candidate Genes for 46,XY Complete Gonadal Dysgenesis.
- Perspective on postoperative hormone replacement therapy and fertility preservation in Swyer syndrome with dysgerminoma: a case series and literature review.
- Isodicentric Y chromosome with SRY duplication in a female with complete gonadal dysgenesis.
- Case report: Rare heterozygous variant in the NR5A1 gene causing 46,XY complete gonadal dysgenesis with a non-communicating rudimentary uterus.
Bases de dados e fontes oficiais
Identificadores e referências canônicas usadas para montar este verbete.
- ORPHA:242(Orphanet)
- MONDO:0010765(MONDO)
- GARD:5068(GARD (NIH))
- Variantes catalogadas(ClinVar)
- Busca completa no PubMed(PubMed)
- Artigo Wikipedia(Wikipedia)
- Q957751(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.
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