raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:168593

Sudden infant death-dysgenesis of the testes syndrome

Synonyms: SIDDT

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

Sudden infant death with dysgenesis of the testes (SIDDT) syndrome is a lethal condition in infants with dysgenesis of testes.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enSudden infant death-dysgenesis of the testes syndromeSIDDT
frSyndrome de mort subite du nourrisson-dysgénésie des testicules= en
dePlötzlicher Kindstod mit Hodendysgenesie= en
esSíndrome de muerte infantil súbita-disgenesia de los testículosSíndrome de SIDDT
itMorte improvvisa del neonato - disgenesia dei testicoli= en
nlWiegendood - dysgenesie van testes-syndroom= en
ptSíndrome da morte súbita infantil e disgenesia testicular
plNagła śmierć niemowląt - dysgenezja jąder= en
csSyndrom zahrnující náhlou smrt dítěte a dysgenezi varlat= en
ukСиндром раптової дитячої смерті-дисгенезії яєчок= en
zh婴儿猝死伴睾丸发育不良综合征= en
trTestis sendromunun disgenezi-ani bebek ölümü= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM608800Evalidated
ICD-10G90.8NTBTattributedvalidated
ICD-11MH11.ZNTBTindexvalidated
MONDO0012124Evalidated
MeSHC563856Evalidated
UMLSC1837371Evalidated
GARD12382Evalidated

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
TSPYL1Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:12382ENSG000001892416047146q22.1TSPY like 115273283[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families21 casesWorldwideCase(s)Validated15273283[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_15273283[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

17 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0012332Abnormal autonomic nervous system physiology
HP:0002793Abnormal pattern of respiration
HP:0000062Ambiguous genitalia
HP:0011675Arrhythmia
HP:0001695Cardiac arrest
HP:0000028Cryptorchidism
HP:0001522Death in infancy
HP:0002020Gastroesophageal reflux
HP:0008736Hypoplasia of penis
HP:0002045Hypothermia
HP:0010535Sleep apnea
HP:0000046Small scrotum
Frequent (79-30%)
HP:0001608Abnormality of the voice
HP:0001510Growth delay
HP:0001265Hyporeflexia
HP:0001336Myoclonus
HP:0000602Ophthalmoplegia

Run the differential on the 12 obligate / very frequent terms

Annotation source: 15273283[PMID]

7

Sources for this card