raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:561

Marshall-Smith syndrome

Synonyms: Accelerated skeletal maturation-facial dysmorphism-failure to thrive syndrome

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

A rare genetic multiple congenital anomalies syndrome characterized by abnormal bone maturation with skeletal anomalies, airway obstructions, failure to thrive, developmental delay, moderate to severe intellectual disability and characteristic facial features with macrocephaly, prominent forehead, shallow orbits, proptosis and blue sclerae.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMarshall-Smith syndromeAccelerated skeletal maturation-facial dysmorphism-failure to thrive syndrome
frSyndrome de Marshall-SmithSyndrome de maturation osseuse accélérée-dysmorphie faciale-retard staturo-pondéral
deMarshall-Smith-SyndromBeschleunigte Knochenalterung - Gesichtsanomalien - Gedeihstörungen
esSíndrome de Marshall-SmithSíndrome de maduración esquelética acelerada-dismorfia facial-falta de crecimiento
itSindrome di Marshall-SmithMaturazione ossea accelerata - facies peculiare - ritardo di crescita
nlSyndroom van Marshall-SmithVersnelde skeletmaturatie - faciale dysmorfie - groeifalen-syndroom
ptSíndrome Marshall-SmithSíndrome de maturação óssea acelerada-dismorfia facial-má evolução estaturoponderal
plZespół Marshalla i SmithaZespół zaawansowanego wieku kostnego, dysmorfii twarzy i niedoboru wzrostu i masy ciała
csMarshallův-Smithův syndromSyndrom zahrnující akcelerovaný kosterní vývoj, podivnou tvář a poruchu prospívání · Marshall-Smithův syndrom
ukСиндром Маршалла-СмітаСиндром прискореного дозрівання скелета - дизморфізму обличчя - неспроможності до розвитку
zhMarshall-Smith综合征加速期骨骼成熟-面部畸形-发育落后综合征
trMarshall-Smith sendromuHızlandırılmış iskelet olgunlaşması-fasiyal dismorfizm-gelişme bozukluğu sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM602535Evalidated
ICD-10Q87.3NTBTattributedvalidated
ICD-11LD2CNTBTindexvalidated
MONDO0011244Evalidated
MeSHC536026Evalidated
UMLSC0265211Evalidated
GARD6985Evalidated

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 (4):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
NFIXDisease-causing germline mutation(s) inAssessedHGNC:7788ENSG0000000844116400519p13.13nuclear factor I X20673863[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families74 casesWorldwideCase(s)Validated34925682[PMID]_ORPHANET
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 2017-12-06
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0005616Accelerated skeletal maturation
HP:0000463Anteverted nares
HP:0006487Bowing of the long bones
HP:0001508Failure to thrive
HP:0001249Intellectual disability
HP:0001382Joint hypermobility
HP:0011220Prominent forehead
HP:0000520Proptosis
HP:0000278Retrognathia
HP:0003100Slender long bone
HP:0000963Thin skin
Frequent (79-30%)
HP:0000592Blue sclerae
HP:0000978Bruising susceptibility
HP:0000405Conductive hearing impairment
HP:0002230Generalized hirsutism
HP:0000316Hypertelorism
HP:0002659Increased susceptibility to fractures
HP:0000194Open mouth
HP:0010808Protruding tongue
HP:0004349Reduced bone mineral density
HP:0002650Scoliosis
HP:0003196Short nose
Occasional (29-5%)
HP:0030680Abnormal cardiovascular system morphology
HP:0001321Cerebellar hypoplasia
HP:0000453Choanal atresia
HP:0001363Craniosynostosis
HP:0000212Gingival overgrowth
HP:0000648Optic atrophy
HP:0002119Ventriculomegaly

Run the differential on the 11 obligate / very frequent terms

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Sources for this card