raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:36412

Hypocomplementemic urticarial vasculitis

Synonyms: Anti-C1q vasculitis · Mac Duffie hypocomplementemic urticarial vasculitis · Mac Duffie syndrome · McDuffie hypocomplementemic urticarial vasculitis · McDuffie syndrome

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive, Not applicable
Age of onset
Adult, Childhood
Status
active

A rare immune complex-mediated small vessel vasculitis characterized by urticaria and hypocomplementemia (low C3, C4 and/or C1q), and usually associated with circulating anti-C1q autoantibodies. Arthritis, pulmonary disease, ocular inflammation are common systemic manifestations.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enHypocomplementemic urticarial vasculitisAnti-C1q vasculitis · Mac Duffie hypocomplementemic urticarial vasculitis · Mac Duffie syndrome · McDuffie hypocomplementemic urticarial vasculitis · McDuffie syndrome
frVascularite urticarienne hypocomplémentémiqueSyndrome de MacDuffie · Syndrome de McDuffie · Vascularite anti-C1q · Vascularite urticarienne hypocomplémentémique de Mac Duffie · Vascularite urticarienne hypocomplémentémique de McDuffie
deVaskulitis, hypokomplementämische urtikarielleHypokomplementämisches Urtikaria-Vaskulitis-Syndrom · Mac-Duffie-Syndrom · McDuffie hypokomplementämische urtikarielle Vaskulitis
esVasculitis urticarial hipocomplementémicaSíndrome de Mac Duffie · Síndrome de McDuffie · Vasculitis anti-C1q · Vasculitis urticarial hipocomplementémica de Mac Duffie · Vasculitis urticarial hipocomplementémica de McDuffie
itVasculite orticarioide ipocomplementemicaSindrome di MacDuffie · Sindrome di McDuffie · Vasculite anti-C1q · Vasculite leucocitoclastica ipocomplementemica · Vasculite orticarioide ipocomplementemica di Mac Duffie · Vasculite orticarioide ipocomplementemica di McDuffie
nlHypocomplementemische urticariële vasculitisSyndroom van McDuffie · Anti-C1q-vasculitis · Hypocomplementemische urticariële vasculitis van Mac Duffie · Hypocomplementemische urticariële vasculitis van McDuffie · Syndroom van Mac Duffie
ptVasculite urticariforme hipocomplementémicaSíndrome Mac Duffie · Síndrome McDuffie · Vasculite anti-C1q · Vasculite urticariforme hipocomplementémica Mac Duffie
plPokrzywkowe zapalenie naczyń z obniżeniem stężenia składowych dopełniaczaPokrzywkowe zapalenie naczyń z obniżeniem stężenia składowych dopełniacza Mac Duffie · Pokrzywkowe zapalenie naczyń z obniżeniem stężenia składowych dopełniacza McDuffie · Zapalenie naczyń anty-C1q · Zespół Mac Duffie · Zespół McDuffie
csHypokomplementemická urtikariální vaskulitidaAnti-C1q vaskulitida · Mac Duffieho hypokomplementemická urtikariální vaskulitida · Mac Duffieho syndrom · McDuffieho hypokomplementemická urtikariální vaskulitida · McDuffieho syndrom
ukГіпокомплементарний кропивяночний васкулітАнти-C1q васкуліт · Гіпокомплементарний кропивяночний васкуліт Мак Даффі · Синдром Мак Даффі · Гіпокомплементарний кропивяночний васкуліт МакДаффі · Синдром Макдаффі
zh低补体血性荨麻疹性血管炎Mac Duffie低补体性荨麻疹性血管炎
trHipokomplementemik ürtikeryal vaskülitMcDuffie sendromu · Anti-C1q vaskülit · Mac Duffie sendromu · McDuffie hipokomplementemik ürtikeryal vaskülit · Mac Duffie hipokomplementemik ürtikeryal vaskülit

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10M31.8NTBTinclusionvalidated
ICD-114A44.91Especificvalidated
MONDO0018227Evalidated
UMLSC0343206Evalidated
GARD6725Evalidated

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 (3):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
DNASE1L3Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:2959ENSG000001636876022443p14.3deoxyribonuclease 1L323666765[PMID]
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Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalenceUnknown—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

47 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0004431Complement deficiency
HP:0000989Pruritus
HP:0000988Skin rash
HP:0011944Small vessel vasculitis
Frequent (79-30%)
HP:0002027Abdominal pain
HP:0100665Angioedema
HP:0001369Arthritis
HP:0002960Autoimmunity
HP:0000509Conjunctivitis
HP:0012735Cough
HP:0002094Dyspnea
HP:0100534Episcleritis
HP:0100820Glomerulopathy
HP:0000790Hematuria
HP:0002105Hemoptysis
HP:0100533Inflammatory abnormality of the eye
HP:0007400Irregular hyperpigmentation
HP:0002017Nausea and vomiting
HP:0000093Proteinuria
HP:0000083Renal insufficiency
HP:0000554Uveitis
Occasional (29-5%)
HP:0001654Abnormal heart valve morphology
HP:0006536Airway obstruction
HP:0001541Ascites
HP:0001251Ataxia
HP:0100021Cerebral palsy
HP:0006824Cranial nerve paralysis
HP:0002014Diarrhea
HP:0002097Emphysema
HP:0004374Hemiplegia/hemiparesis
HP:0002240Hepatomegaly
HP:0100326Immunologic hypersensitivity
HP:0001373Joint dislocation
HP:0002716Lymphadenopathy
HP:0002665Lymphoma
HP:0001287Meningitis
HP:0003326Myalgia
HP:0001698Pericardial effusion
HP:0009830Peripheral neuropathy
HP:0002202Pleural effusion
HP:0002718Recurrent bacterial infections
HP:0001315Reduced tendon reflexes
HP:0002091Restrictive ventilatory defect
HP:0001250Seizure
HP:0000407Sensorineural hearing impairment
HP:0000763Sensory neuropathy
HP:0001744Splenomegaly

Run the differential on the 4 obligate / very frequent terms

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Sources for this card