raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:261144

FOXG1 syndrome due to 14q12 microdeletion

Synonyms: Del(14)(q12) · Monosomy 14q12

Type
Clinical subtype
Group
Subtype of disorder
Inheritance
Not applicable
Age of onset
Infancy, Neonatal
Status
active

14q12 microdeletion syndrome is a recently described syndrome characterized by severe intellectual deficit, with a normal neonatal period, followed by a phase of regression at the age of 3-6 months.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enFOXG1 syndrome due to 14q12 microdeletionDel(14)(q12) · Monosomy 14q12
frSyndrome FOXG1 dû à une microdélétion 14q12Del(14)(q12) · Monosomie 14q12 · Syndrome FOXG1 plus
deFOXG1-Syndrom durch Mikrodeletion 14q12Del(14)(q12) · Monosomie 14q12
esSíndrome FOXG1 por microdeleción 14q12Del(14)(q12) · Monosomía 14q12
itSindrome FOXG1 da microdelezione 14q12Del(14)(q12) · Monosomia 14q12
nlFOXG1-syndroom door 14q12-microdeletieDel(14)(q12) · Monosomie 14q12
ptSíndrome FOXG1 por microdeleção 14q12Del(14)(q12) · Monossomia 14q12
plZespół mikrodelecji 14q12Del(14)(q12) · Monosomia 14q12
csSyndrom mikrodelece 14q12Del(14)(q12) · Monozomie 14q12
ukСиндром FOXG1 внаслідок мікроделеції 14q12Del(14)(q12) · Моносомія 14q12
zh染色体14q12微缺失综合征14q12单体
tr14q12 mikrodelesyon sendromuDel (14) (q12) · Monozomi 14q12

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q93.5NTBTattributedvalidated
ICD-11LD44.ENTBTindexvalidated
MONDO0016833Evalidated
UMLSC4305240Evalidated

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 (2):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
FOXG1Role in the phenotype ofAssessedHGNC:3811ENSG0000017616516487414q12forkhead box G123895774[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families3 casesWorldwideCase(s)Validated19303466[PMID]_18627055[PMID]
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

29 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000733Abnormal repetitive mannerisms
HP:0009738Abnormality of the antihelix
HP:0001344Absent speech
HP:0000414Bulbous nose
HP:0005280Depressed nasal bridge
HP:0002376Developmental regression
HP:0000286Epicanthus
HP:0000232Everted lower lip vermilion
HP:0011968Feeding difficulties
HP:0001510Growth delay
HP:0001252Hypotonia
HP:0010864Intellectual disability, severe
HP:0000252Microcephaly
HP:0000411Protruding ear
HP:0010804Tented upper lip vermilion
Frequent (79-30%)
HP:0001274Agenesis of corpus callosum
HP:0000581Blepharophimosis
HP:0000494Downslanted palpebral fissures
HP:0003781Excessive salivation
HP:0002020Gastroesophageal reflux
HP:0002808Kyphosis
HP:0000158Macroglossia
HP:0000303Mandibular prognathia
HP:0100540Palpebral edema
HP:0005487Prominent metopic ridge
HP:0002650Scoliosis
HP:0001250Seizure
HP:0003196Short nose
HP:0000319Smooth philtrum

Run the differential on the 12 obligate / very frequent terms

7

Sources for this card