raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:217266

BNAR syndrome

Synonyms: Bifid nose with or without anorectal and renal anomalies

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

BNAR syndrome is a very rare multiple congenital anomaly syndrome characterized by a bifid nose (with bulbous nasal tip but not associated with hypertelorism) with or without the presence of anal defects (i.e. anteriorly placed anus, rectal stenosis or atresia) and renal dysplasia (unilateral or bilateral renal agenesis) and without intellectual disability. BNAR syndrome is phenotypically related to Fraser syndrome and oculotrichoanal syndrome.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enBNAR syndromeBifid nose with or without anorectal and renal anomalies
frSyndrome BNARNez bifide avec ou sans anomalies anorectales et rénales
deBNAR-SyndromBifide Nase mit/ohne anorektale und renale Anomalien
esSíndrome BNARNariz bífida con o sin anomalías anorrectales y renales
itSindrome BNARNaso bifido con o senza anomalie renali e anorettali
nlBNAR-syndroomBifide neus met of zonder anorectale en renale anomalieën
ptSíndrome de BNAR
plZespół BNARRozszczep nosa z lub bez wad odbytu i odbytnicy oraz nerek
csBNAR syndromRozštěp nosu s nebo bez anorektálních a renálních anomálií
ukСиндром BNARБіфідний ніс з аномаліями аноректальної та ниркової системи або без них
zh二裂鼻伴或不伴肛门直肠和肾异常综合征二裂鼻伴或不伴肛门直肠和肾异常综合征
trBNAR sendromuAnorektal ve böbrek anomalileri olan veya olmayan bifid burun

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM608980Evalidated
ICD-10Q87.8NTBTattributedvalidated
ICD-11LD2F.1YNTBTindexvalidated
MONDO0012165Evalidated
MeSHC567672Evalidated
UMLSC2750433Evalidated
GARD10595Evalidated

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 (6):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
FREM1Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:23399ENSG000001649466089449p22.3FRAS1 related extracellular matrix 119732862[PMID]_23401257[PMID]
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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families9 familiesWorldwideFamily(ies)Validated24115501[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.

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HPO phenotypes

7 annotations · validated 2017-01-19
HPOTerm (as annotated by Orphanet)Diagnostic
Obligate (100%)
HP:0011803Bifid nose
Very frequent (99-80%)
HP:0010322Abnormality of the 5th toe
HP:0002025Anal stenosis
HP:0001545Anteriorly placed anus
HP:0000200Short lingual frenulum
Frequent (79-30%)
HP:0000104Renal agenesis
Occasional (29-5%)
HP:0012252Abnormal respiratory system morphology

Run the differential on the 5 obligate / very frequent terms

Annotation source: 19732862[PMID]_23401257[PMID]

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Sources for this card