raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:1495

Intellectual disability-hypoplastic corpus callosum-preauricular tag syndrome

Synonyms: Da Silva syndrome

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

A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by psychomotor and growth delay, severe intellectual disability, microcephaly, and hypoplastic corpus callosum. Additional reported manifestations include increased muscle tonus, seizures, cardiac anomalies, recurrent bronchopneumonia, camptodactyly, preauricular skin tag, and dysmorphic facial features (such as broad forehead, hypertelorism, flat nasal bridge, anteverted nostrils, and prominent ears), among others.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enIntellectual disability-hypoplastic corpus callosum-preauricular tag syndromeDa Silva syndrome
frSyndrome de déficience intellectuelle-hypoplasie du corps calleux-appendice préauriculaireSyndrome de Da Silva
deIntelligenzminderung-Corpus callosum-Hypoplasie-präaurikuläre Anhängsel-SyndromDa-Silva-Syndrom
esSíndrome de discapacidad intelectual-hipoplasia del cuerpo callosoco-apéndice preauricularSíndrome de Da Silva
itSindrome da disabilità intellettiva-ipoplasia del corpo calloso-appendice preauricolareSindrome di Da Silva
nlIntellectuele achterstand - hypoplastisch corpus callosum - preauriculair aanhangsel-syndroomSyndroom van Da Silva
ptSíndrome de perturbação do desenvolvimento intelectual-hipoplasia do corpo caloso-apêndice pré-auricularSíndrome Da Silva
plNiepełnosprawność intelektualna - niedorozwój ciała modzelowatego - wyrostek przedusznyZespół Da Silva
csSyndrom zahrnující mentální retardaci, hypoplázii corpus callosum a preaurikulární vyrůstekDa Silvaův syndrom
ukСиндром інтелектуальної недостатності-гіпопластичного мозолистого тіла-преаурикулярного виростуСиндром Да Сілва
zh智力障碍-胼胝体发育不良-耳前赘综合征Da Silva综合征
trZihinsel yetersizlik-korpus kallosum hipoplazisi-kulak önü deri katlantısı sendromuDa Silva sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q87.8NTBTattributedvalidated
MONDO0015458Evalidated
UMLSC4302530Evalidated
GARD12487Evalidated

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

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (4):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families3 casesWorldwideCase(s)Validated3400727[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_3400727[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.

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HPO phenotypes

27 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0010978Abnormality of immune system physiology
HP:0002750Delayed skeletal maturation
HP:0001510Growth delay
HP:0001276Hypertonia
HP:0002079Hypoplasia of the corpus callosum
HP:0010864Intellectual disability, severe
HP:0000252Microcephaly
HP:0000384Preauricular skin tag
HP:0000411Protruding ear
HP:0006532Recurrent pneumonia
HP:0002119Ventriculomegaly
Frequent (79-30%)
HP:0000174Abnormal palate morphology
HP:0100490Camptodactyly of finger
HP:0001522Death in infancy
HP:0001511Intrauterine growth retardation
HP:0000347Micrognathia
HP:0001883Talipes
Occasional (29-5%)
HP:0030680Abnormal cardiovascular system morphology
HP:0001608Abnormality of the voice
HP:0002020Gastroesophageal reflux
HP:0000348High forehead
HP:0000160Narrow mouth
HP:0000639Nystagmus
HP:0000648Optic atrophy
HP:0001250Seizure
HP:0003196Short nose
HP:0004322Short stature

Run the differential on the 11 obligate / very frequent terms

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Sources for this card