raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:555877

FLNA-related X-linked myxomatous valvular dysplasia

Synonyms: FLNA-related valvular dystrophy · Filamin A-related X-linked myxomatous valvular dysplasia

Type
Morphological anomaly
Group
Disorder
Inheritance
X-linked recessive
Age of onset
Neonatal
Status
active

A rare genetic cardiac malformation characterized by progressive myxomatous degeneration predominantly of the mitral valve (but not uncommonly with multivalvular involvement), presenting as valve thickening and dysfunction with variable stenosis, prolapse, and/or regurgitation, and potentially resulting in lethal heart failure. Hyperextensible skin and joint hypermobility have been reported in some patients. Hemizygous males display a more severe phenotype than heterozygous females.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enFLNA-related X-linked myxomatous valvular dysplasiaFLNA-related valvular dystrophy · Filamin A-related X-linked myxomatous valvular dysplasia
frDysplasie valvulaire myxomatose liée à l'X associée à FLNADysplasie valvulaire myxomatose liée à l'X associée à la filamine A · Dystrophie valvulaire associée à FLNA
deFLNA-assoziierte X-chromosomale myxomatose HerzklappendysplasieHerzklappendysplasie, FLNA-Gen-assoziierte · X-chromosomale Herzklappendysplasie
esDisplasia valvular mixomatosa ligada al cromosoma X asociada al gen FLNADisplasia valvular mixomatosa ligada al cromosoma X asociada a la filamina A · Distrofia valvular asociada al gen FLNA
itDisplasia valvolare mixomatosa legata all'X correlata a FLNA
nlFLNA-gerelateerde X-gebonden myxomateuze klepdysplasieFLNA-gerelateerde klepdystrofie · Filamine A-gerelateerde X-gebonden myxomateuze klepdysplasie
ptDisplasia valvular mixomatosa ligada ao X FLNA-relacionada
plDysplazja śluzakowata zastawkowa sprzężona z chromosomem X związana z FLNA= en
csX-vázaná myxomatozní valvulární dysplázie související s FLNAFLNA-vázaná valvulární dystrofie · X-vázaná myxomatozní valvulární dysplázie související s filaminem A
ukХ-зчеплена міксоматозна клапанна дисплазія, повязана з FLNAМіксоматозна клапанна дисплазія, повязана з філаміном А, зчеплена з Х-хромосомою · Клапанна дистрофія, повязана з FLNA
zhFLNA基因相关的X连锁粘液瘤性瓣膜发育不良细丝蛋白A相关X连锁粘液瘤性瓣膜发育不良
trFLNA-ilişkili X'e bağlı miksomatöz valvüler displaziFLNA-ilişkili kapak distrofisi · FLNA ile ilişkili kapak distrofisi · Filamin A ile ilişkili X'e bağlı miksomatöz valvüler displazi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM314400BTNTvalidated
ICD-10Q23.8NTBTattributedvalidated
ICD-11LA8YNTBTattributedvalidated
MONDO0010753Evalidated
MONDO10753Evalidated
UMLSC0262436Evalidated
GARD1096Evalidated

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.

Codes that Orphanet moved or referred to this one:

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
FLNADisease-causing germline mutation(s) inAssessedHGNC:3754ENSG00000196924300017Xq28filamin A17190868[PMID]
5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_29146485[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

24 annotations · validated 2022-11-18
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001653Mitral regurgitation
HP:0010444Pulmonary insufficiency
HP:0005180Tricuspid regurgitation
Frequent (79-30%)
HP:0001659Aortic regurgitation
HP:0001634Mitral valve prolapse
Occasional (29-5%)
HP:0001647Bicuspid aortic valve
HP:0001382Joint hypermobility
HP:0031624Moderate myopia
HP:0000189Narrow palate
HP:0001763Pes planus
Very rare (<4-1%)
HP:0001488Bilateral ptosis
HP:0002094Dyspnea
HP:0001290Generalized hypotonia
HP:0000974Hyperextensible skin
HP:0000316Hypertelorism
HP:0002079Hypoplasia of the corpus callosum
HP:0000343Long philtrum
HP:0000347Micrognathia
HP:0001643Patent ductus arteriosus
HP:0000767Pectus excavatum
HP:0032388Periventricular nodular heterotopia
HP:0030718Right atrial enlargement
HP:0002650Scoliosis
HP:0000179Thick lower lip vermilion

Run the differential on the 3 obligate / very frequent terms

Annotation source: 29020406[PMID]_24521555[PMID]_27739212[PMID]_27004951[PMID]_29146485[PMID]

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Sources for this card