raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:73229

HANAC syndrome

Synonyms: Autosomal dominant familial hematuria-retinal arteriolar tortuosity-contractures syndrome · Hereditary angiopathy-nephropathy-aneurysms-muscle cramps syndrome

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Childhood
Status
active

A rare multisystemic disease characterized by small-vessel brain disease, cerebral aneurysm, and extracerebral findings involving the kidney, muscle, and small vessels of the eye.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enHANAC syndromeAutosomal dominant familial hematuria-retinal arteriolar tortuosity-contractures syndrome · Hereditary angiopathy-nephropathy-aneurysms-muscle cramps syndrome
frSyndrome HANACSyndrome autosomique dominant d'hématurie-tortuosités rétiniennes-crampes musculaires · Syndrome héréditaire d'angiopathie-néphropathie-anévrismes-crampes musculaires
deHANAC-SyndromAutosomal-dominante familiäre Hämaturie-gewundene Netzhautarteriolen-Kontrakturen-Syndrom · Hereditäres Angiopathie-Nephropathie-Aneurysmen-Muskelkrampf-Syndrom
esSíndrome HANACSíndrome de hematuria familiar autosómica dominante-tortuosidad arteriolar retiniana-contracturas · Síndrome de hereditario de angiopatía-nefropatía-aneurismas-calambres musculares
itSindrome HANACEmaturia familiare autosomica dominante - tortuosità delle arterie retiniche - contratture · Sindrome angiopatia ereditaria-nefropatia-aneurismi-crampi muscolari
nlHANAC-syndroomAutosomaal dominante familiale hematurie - retinale arteriële tortuositeit - contracturen-syndroom · Erfelijk angiopathie - nefropathie - aneurysmata - spierkrampen-syndroom
ptSíndrome HANACSíndrome de angiopatia hereditária-nefropatia-aneurismas-cãimbras · Síndrome de hematúria familiar autossómica dominante-tortuosidade arteriolar da retina-contraturas
plAutosomalna dominująca hematuria rodzinna - krętość tętnic siatkówki - przykurczeZespół dziedziczna angiopatia-nefropatia-tętniaki-skurcze mięśni · Zespół HANAC
csSyndrom zahrnující autozomálně dědičnou familiární hematurii, retinální arteriální tortuozitu a kontrakturyHANAC syndrom · Syndrom zahrnující hereditární angiopatii, nefropatii, aneuryzmata a svalové křeče
ukСиндром HANACАутосомно-домінантний сімейний синдром гематурії - звивистості артеріол сітківки - контрактури сітківки · Синдром спадкової ангіопатії-нефропатії-аневризми- мязових спазмів
zhHANAC综合征常染色体显性遗传性血尿-视网膜动脉迂曲-挛缩综合征
trHANAC sendromuKalıtsal anjiyopati-nefropati-anevrizmalar-kas krampları sendromu · Otozomal dominant ailesel hematüri-retinal arteriolar tortuozite-kontraktür sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM611773Evalidated
ICD-10I99NTBTattributedvalidated
ICD-11GB4YNTBTindexvalidated
MONDO0012726Evalidated
MeSHC567088Evalidated
UMLSC2673195Evalidated
GARD10889Evalidated

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
COL4A1Disease-causing germline mutation(s) inAssessedHGNC:2202ENSG0000018749812013013q34collagen type IV alpha 1 chain18160688[PMID]_20301768[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families6 familiesWorldwideFamily(ies)Validated20818663[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_20818663[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

17 annotations · validated 2026-03-27
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0003394Muscle spasm
HP:0000083Renal insufficiency
HP:0012841Retinal vascular tortuosity
Frequent (79-30%)
HP:0004944Dilatation of the cerebral artery
HP:0003236Elevated circulating creatine kinase concentration
HP:0005562Multiple renal cysts
HP:0000631Retinal arterial tortuosity
Occasional (29-5%)
HP:0011675Arrhythmia
HP:0000518Cataract
HP:0001342Cerebral hemorrhage
HP:0012622Chronic kidney disease
HP:0012213Decreased glomerular filtration rate
HP:0000790Hematuria
HP:0032325Lacunar stroke
HP:0007700Ocular anterior segment dysgenesis
HP:0030880Raynaud phenomenon
HP:0000573Retinal hemorrhage

Run the differential on the 3 obligate / very frequent terms

Annotation source: 26260163[PMID]_31453918[PMID]_36372235[PMID]_20301768[PMID]

7

Sources for this card