Pediatric rheumatology

Childhood-Onset ANCA- Associated Vasculitis: single center experience from Central California

Pediatr Rheumatol Online JPublished Retrospective cohort study

Authors' conclusion

Microscopic polyangiitis was the most frequent AAV subtype with female preponderance, shorter duration of symptoms at onset and higher proportion of racial/ ethnic minority patients. Hispanic children demonstrated frequent MPO positivity. Trends towards higher rates of ICU requirement and need for dialysis upon initial presentation was noted in MPA. Patients with MPA received rituximab more frequently.

Study context

Population
Patients ≤18 years with childhood-onset ANCA-associated vasculitides (AAV) diagnosed 2010–2021, Central California
Participants
21 patients
Exposure
Microscopic polyangiitis (MPA) vs granulomatosis with polyangiitis (GPA)
  • MPAn = 12
  • GPAn = 9
Outcome
Characteristics at initial presentation
Methodological detailssingle-centre
  • Single-centre

Main finding

As reported in the abstract

Median age at diagnosis, MPA
13.7 years
Median age at diagnosis, GPA
14 years
Female, MPA vs GPA
92% versus 44%
Racial/ethnic minority
57%
White
43%
Hispanic, MPA
67%
White, GPA
78%
Median symptom duration before diagnosis, MPA
14 days
Median symptom duration before diagnosis, GPA
21 days
Renal involvement, MPA
100%
Renal involvement, GPA
78%
Ear, nose and throat (ENT) involvement, GPA
89%
PR3 positive, white patients
89%
ICU admission, MPA
67%
Dialysis, MPA
50%

Observational data: associations, not effects.

Further findings

Deaths · related to Aspergillus pneumonia and pulmonary hemorrhage — MPA
2 events

Treatment

MPA: CYC plus steroids
42%
MPA: RTX plus steroids
42%
GPA: CYC with steroids alone
78%
GPA: CYC with steroids and RTX
22%

Original publication

Childhood-Onset ANCA- Associated Vasculitis: single center experience from Central California. Pediatr Rheumatol Online J. Published 3 July 2023. doi:10.1186/s12969-023-00853-4

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