raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:3469

XK aprosencephaly syndrome

Synonyms: Garcia-Lurie syndrome · XK syndrome · XK-aprosencephaly

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

A rare syndromic type of cerebral malformation characterized by aprosencephaly (absence of telencephalon and diencephalon), oculo-facial anomalies (i.e. ocular hypotelorism or cyclopia, malformation/absence of nasal structures, cleft lip), preaxial limb defects (i.e. hypoplastic hands, absent halluces) and various other anomalies including ambiguous genitalia, imperforate anus, and vertebral anomalies. The syndrome is thought to have an autosomal recessive mode of inheritance.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enXK aprosencephaly syndromeGarcia-Lurie syndrome · XK syndrome · XK-aprosencephaly
frSyndrome d'aprosencéphalie XKAprosencéphalie-XK · Syndrome de Garcia-Lurie
deXK-Aprosenzephalie-SyndromAtelenzephalie · Garcia-Lurie-Syndrom · XK-Aprosenzephalie · XK-Syndrom
esSíndrome de aprosencefalia XKAprosencefalia XK · Síndrome XK · Síndrome de Garcia-Lurie
itSindrome XK dell'aprosencefalia/aprosencefalia XKAtelencefalia
nlXK-aprosencefalie-syndroomSyndroom van Garcia-Lurie · XK-aprosencefalie · XK-syndroom
ptSíndrome de aprosencefalia XKAprosencefalia-XK · Síndrome Garcia-Lurie · Síndrome XK
plXK brak przodomózgowiaAtelencephaly · Zespół Garcia i Lurie
csXK aprozencefalieAtelencefalie · Garciaův-Lurieho syndrom · Garcia-Lurieho syndrom
ukСиндром апрозенцефалії XKСиндром Гарсіа-Люрі · XK-синдром · XK-апросенцефалія
zhXK脑前部缺无综合征Garcia-Lurie综合征
trXK aprosensefali sendromuXK sendromu · XK-aprosensefali · Garcia-Lurie sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM207770Evalidated
ICD-10Q04.3NTBTattributedvalidated
ICD-11LD20.3NTBTindexvalidated
MONDO0008811Evalidated
MeSHC536767Evalidated
UMLSC0795952Evalidated
GARD424Evalidated

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 (1):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families10 casesWorldwideCase(s)ValidatedORPHANET
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET

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

12 annotations · validated 2017-09-25
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000252Microcephaly
HP:0000568Microphthalmia
HP:0000160Narrow mouth
Frequent (79-30%)
HP:0000811Abnormal external genitalia
HP:0002818Abnormal morphology of the radius
HP:0005288Abnormality of the nares
HP:0000600Abnormality of the pharynx
HP:0002023Anal atresia
Occasional (29-5%)
HP:0001631Atrial septal defect
HP:0000601Hypotelorism
HP:0001561Polyhydramnios
HP:0001629Ventricular septal defect

Run the differential on the 3 obligate / very frequent terms

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Sources for this card