raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:93302

Brachyolmia, Maroteaux type

historical

Synonyms: Brachyolmia type 2

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Childhood
Status
historical

A rare brachyolmia characterized by short stature with a high upper-to-lower segment ratio and relatively long arms. Mild scoliosis is typically present. Radiographically, it is distinct from other types of brachyolmia, showing rounded anterior and posterior vertebral margins and variable intervertebral space widths (narrowed or broadened). Some patients also exhibit precocious ossification of the falx cerebri, metaphyseal irregularities, and small epiphyses of the proximal femora. Additional clinical features may include widely spaced nipples, clinodactyly, hypoplastic nails, pectus excavatum, joint hyperlaxity, subtle facial dysmorphism (such as a flat nose and thick lips), and mild intellectual disability. There have been no further descriptions in the literature since 1989.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enBrachyolmia, Maroteaux typeBrachyolmia type 2
frBrachyolmie type MaroteauxBrachyolmie type 2
deBrachyolmie Typ 2Brachyolmie Typ Maroteaux
esBraquiolmia tipo 2Braquiolmia tipo Maroteaux
itBrachiolmia tipo MariteauxBrachiolmia, tipo Maroteaux
nlBrachyolmie, Maroteaux-typeBrachyolmie type 2
ptBraquiolmia tipo Maroteaux
plBrachyolmia, typu MaroteauxBrachyolmia typu 2
csBrachyolmie, Maroteauxův typBrachyolmie, typ 2
ukБрахіолмія, тип МаротоБрахіолмія типу 2
zh短躯干症,Maroteaux型短躯干症2型
trBrakiyolmi, Maroteaux tipiBrakiyolmi tip 2

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM613678Evalidated
ICD-10Q76.4NTBTattributedvalidated
ICD-11LD24.5YNTBTindexvalidated
MONDO0013360Evalidated
MeSHC563218Evalidated
UMLSC5399913Evalidated

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 (1):

  • ORPHA:1293Brachyolmia
    rare developmental anomalies during embryogenesis; rare genetic diseases; rare bone diseases

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families4 familiesWorldwideFamily(ies)Validated2669482[PMID]_20503319[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_2669482[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

8 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0003312Abnormal form of the vertebral bodies
HP:0000926Platyspondyly
HP:0002650Scoliosis
HP:0004322Short stature
HP:0010306Short thorax
Frequent (79-30%)
HP:0000767Pectus excavatum
HP:0006610Wide intermamillary distance
Occasional (29-5%)
HP:0010653Abnormality of the falx cerebri
7

Sources for this card