Lupus & antiphospholipid syndrome

Genome-Wide Sequencing Identified Rare Genetic Variants for Childhood-Onset Monogenic Lupus

J RheumatolPublished Genetic sequencing cohort study

Authors' conclusion

In a cohort of patients with suspected monogenic lupus who underwent genome-wide sequencing, 13% carried rare predicted damaging variants for monogenic lupus.

Study context

Population
Children suspected of monogenic lupus (systemic lupus erythematosus (SLE)); 80% female, mean age at diagnosis 8.9 (SD 3.2) years69 with WGS
Participants
71 children
Exposure
Predicted damaging variant vs No predicted damaging variant
  • Predicted damaging variantn = 9
Outcome
Prevalence of rare variants in known monogenic lupus genes
Methodological detailspaired-end genome-wide sequencing (WGS or whole exome sequencing), 36 monogenic lupus genes, multivariate logistic models adjusted for sex, ancestry and age of diagnosis
  • Paired-end genome-wide sequencing (WGS or whole exome sequencing)
  • 36 monogenic lupus genes
  • Multivariate logistic models adjusted for sex, ancestry and age of diagnosis

Main finding

As reported in the abstract

Predicted damaging variants in monogenic lupus genes

Predicted damaging variant

13%

9

Observational data: associations, not effects.

Further findings

Age at diagnosis · significantly younger at diagnosis

P = 0.01

Damaging copy number variants (CNVs) (WGS)

No damaging CNVs identified

Non-HLA or HLA SLE genetic risk scores (GRSs) and odds of carrying ≥ 1 rare variant

No significant association in multivariate analyses

Original publication

Genome-Wide Sequencing Identified Rare Genetic Variants for Childhood-Onset Monogenic Lupus. J Rheumatol. Published 15 November 2022. doi:10.3899/jrheum.220513

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