raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:168563

46,XY gonadal dysgenesis-motor and sensory neuropathy syndrome

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Infancy, Neonatal
Status
active

46,XY gonadal dysgenesis-motor and sensory neuropathy syndrome is a rare, genetic, developmental defect during embryogenesis disorder characterized by partial (unilateral testis, persistence of Müllerian duct structures) or complete (streak gonads only) gonadal dysgenesis, usually manifesting with primary amenorrhea in individuals with female phenotype but 46,XY karyotype, and sensorimotor dysmyelinating minifascicular polyneuropathy, which presents with numbness, weakness, exercise-induced muscle cramps, sensory disturbances and reduced/absent deep tendon reflexes. Germ cell tumors (seminoma, dysgerminoma, gonadoblastoma) may develop from the gonadal tissue.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
en46,XY gonadal dysgenesis-motor and sensory neuropathy syndrome
frSyndrome de dysgénésie gonadique 46,XY-neuropathie motrice et sensitive
de46,XY-Gonadendysgenesie mit motorisch-sensorischer NeuropathieXY-Gonadendysgenesie - minifaszikuläre Neuropathie
esSíndrome de disgenesia gonadal 46 XY-neuropatía sensitivo-motoraSíndrome de disgenesia gonadal 46 XY-neuropatía minifascicular
itDisgenesia gonadica 46,XY - neuropatia sensitivo-motoria
nl46,XY gonadale dysgenesie - motorische en sensorische neuropathie
ptSíndrome de disgenesia gonadal 46,XY-neuropatia sensitiva e motora
pl46,XY dysgenezja gonad - ruchowa i czuciowa neuropatia
csSyndrom zahrnující 46 XY gonadální dysgenezi a motorickou a senzorickou neuropatii
ukСиндром 46,XY дисгенезії гонад-моторної та сенсорної нейропатії
zh46,XY性腺发育不全 - 运动和感觉神经病综合征
tr46, XY gonadal disgenezi-motor ve duyusal nöropati sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM607080Evalidated
ICD-10Q56.1BTNTattributedvalidated
ICD-11LD2A.1NTBTindexvalidated
MONDO0011766Evalidated
UMLSC5190810Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (3):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
DHHDisease-causing germline mutation(s) inAssessedHGNC:2865ENSG0000013954960542312q13.12desert hedgehog signaling molecule11017805[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families5 casesWorldwideCase(s)Validated22209139[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_22209139[PMID]

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

26 annotations · validated 2016-05-23
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0003130Abnormal peripheral myelination
HP:0000055Abnormality of female external genitalia
HP:0003134Abnormality of peripheral nerve conduction
HP:0045010Abnormality of peripheral nerves
HP:0000142Abnormality of the vagina
HP:0008214Decreased serum estradiol
HP:0040171Decreased serum testosterone concentration
HP:0002460Distal muscle weakness
HP:0003409Distal sensory impairment of all modalities
HP:0000133Gonadal dysgenesis
HP:0008723Gonadal dysgenesis with female appearance, male
HP:0000013Hypoplasia of the uterus
HP:0000837Increased circulating gonadotropin level
HP:0000789Infertility
HP:0000026Male hypogonadism
HP:0001271Polyneuropathy
HP:0000786Primary amenorrhea
HP:0001315Reduced tendon reflexes
HP:0007141Sensorimotor neuropathy
HP:0003434Sensory ataxic neuropathy
HP:0003202Skeletal muscle atrophy
HP:0010464Streak ovary
HP:0008715Testicular dysgenesis
Occasional (29-5%)
HP:0000150Gonadoblastoma
HP:0001761Pes cavus
HP:0003376Steppage gait

Run the differential on the 12 obligate / very frequent terms

Annotation source: 17768021[PMID]_17768021[PMID]_10483790[PMID]_11891836[PMID]_7076870[PMID]

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Sources for this card