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Research summary · 11 d ago

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Variant Upstream of IL12A in Autoimmune Disease Studies

A rare variant upstream of IL12A was found to significantly increase the risk of multiple sclerosis (MS), with an odds ratio of 1.79. Additionally, five out of six autoimmune diseases studied exhibited strong co-occurrence among themselves.

Tags: #MSResearch
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Source: Read original source (PMID 42868031)

This plain-English summary was written by AI from a published abstract and may contain errors. It is not medical advice. Read the original study and talk to your MS team before making decisions about treatment.

Human efficacy: Not yet assessed
Mechanism: Not yet assessed
Evidence strength: Not yet assessed
Outcome: Not yet assessed

Why it matters

This finding highlights a potential genetic factor that may influence susceptibility to MS and other autoimmune diseases, suggesting a shared pathogenic mechanism. Understanding these genetic links could inform future research and disease understanding.

What this does not prove

The study does not prove a direct causative link between IL12 pathway variants and MS, thus further investigation is necessary to establish any causative relationships.

Next milestone

No next milestone was established from the available source.

Study facts

Study design: Not reported
Participants / samples: Not reported
Randomised: Not reported
Controlled: Not reported
Primary endpoint met: Not reported
Relevant MS type: Not reported
Publication date: 2026-10-13
Evidence reviewed: Abstract only
Regulatory approval: Not reported
Research areas: Not classified

Original sources

Primary evidenceAutoimmune hepatitis and primary biliary cholangitis are among a subset of autoimmune diseases defined by profound co-prevalence and genetic risk association with the IL12 pathway. ↗DOI: 10.1097/hep.0000000000001819

Supporting passages (3)

publication date2026-10-13

findingsAPPROACH AND RESULTS: We identified a rare variant upstream of IL12A with large risk-increasing effects on autoimmune hepatitis [AIH; per-allele odds ratio (OR)=2.98, p=3×10-9], primary biliary cholangitis (PBC; OR=2.80, p=2×10-8), systemic sclerosis (SSc; OR=2.64, p=2×10-11), Sjogren's disease (SjD; OR=1.94, p=10-11), systemic lupus erythematosus (SLE; OR=1.83, p=5×10-10) and multiple sclerosis (OR=1.79, p=10-11).

limitationsTitle: Autoimmune hepatitis and primary biliary cholangitis are among a subset of autoimmune diseases defined by profound co-prevalence and genetic risk association with the IL12 pathway.

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