What question did this study set out to answer?

To characterize the shared and ancestry-specific genetic architecture of systemic lupus erythematosus and assess how cumulative genetic load influences disease risk across diverse populations.

July 17, 2017Nature CommunicationsOpen Access

Transancestral mapping and genetic load in systemic lupus erythematosus

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Authors

CLCarl D. LangefeldBroad Institute HAHannah C. AinsworthAtrium Health Wake Forest Baptist DGDeborah S. Cunninghame GrahamKing's College London

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Implication

Transancestral association study uncovers novel risk loci and accelerating genetic load across diverse ancestries, highlighting a cumulative hit model for systemic lupus erythematosus.

Key Points

To characterize the shared and ancestry-specific genetic architecture of systemic lupus erythematosus and assess how cumulative genetic load influences disease risk across diverse populations.
Conducted a transancestral association analysis utilizing Immunochip genotype data from 27,574 individuals.
Evaluated cohorts across European (EA), African (AA), and Hispanic Amerindian (HA) ancestries to map both HLA and non-HLA loci.
Identified 58 distinct non-HLA regions in EA, 9 in AA, and 16 in HA ancestries, including 24 novel risk regions reaching genome-wide significance (P < 5 × 10⁻⁸).
Observed multiple independent association signals in approximately 50% of identified regions alongside resolved multigenic HLA effects.
Demonstrated that increasing risk allele counts follow an accelerating pattern of disease risk, supporting a cumulative hit hypothesis for autoimmune pathogenesis.

Cite This Study

Langefeld et al. (2017) studied this question.

synapsesocial.com/papers/6a8722d05ee22a1e35cbaef3 https://doi.org/10.1038/ncomms16021

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Implication

Transancestral association study uncovers novel risk loci and accelerating genetic load across diverse ancestries, highlighting a cumulative hit model for systemic lupus erythematosus.

Transancestral mapping and genetic load in systemic lupus erythematosus

Discussion

Member takes

Implication

Key Points

Cite This Study

Transancestral mapping and genetic load in systemic lupus erythematosus

Discussion

Member takes

Implication

Key Points

Cite This Study

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