Pediatric rheumatology

A deep dive into monogenic lupus: insights on DNASE1L3 mutation

Rheumatology (Oxford)Published Retrospective cohort study

Study context

Population
Childhood-onset SLE (cSLE) followed in paediatric rheumatology tertiary centres in the Sultanate of Oman15 families
Participants
33 participants
Exposure
Monogenic cSLE caused by DNASE1L3 mutation vs sporadic cSLE
  • DNASE1L3n = 33
Outcome
Phenotypic characteristics and outcomes of monogenic lupus caused by DNASE1L3
Methodological detailsmulticentre, retrospective chart review, comparison with sporadic cSLE cohort
  • Multicentre
  • Retrospective chart review
  • Comparison with sporadic cSLE cohort

Main finding

As reported in the abstract

Phenotype of DNASE1L3 monogenic cSLE
Median age of disease onset
4 years
Onset before age 5 years
18 (55%)
Boys
20 (61%)
Hypocomplementemic urticarial vasculitis (HUV) symptoms: arthritis
82%
HUV symptoms: urticarial vasculitis
79%
HUV symptoms: fever
49%
HUV symptoms: abdominal pain
36%
HUV symptoms: conjunctivitis
25%
Nephritis (higher frequency than sporadic cohort)
60%
Pulmonary haemorrhage (higher frequency than sporadic cohort)
15%
SLE disease activity index score on presentation, ± SD
13.3 ± 3.64
Disease damage
14 (42%)
Mean damage index score, ± SD
2.14 ± 1.12

Observational data: associations, not effects.

Original publication

A deep dive into monogenic lupus: insights on DNASE1L3 mutation. Rheumatology (Oxford). Published 12 December 2024. doi:10.1093/rheumatology/keae679

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