Genetic association between STAT1 and systemic lupus erythematosus: A two-sample Mendelian randomization
Tingting Yang1, Tongtong Xiong2, Lu Wang2
1Guizhou Administration of Traditional Chinese Medicine, Guiyang, China.
Medicine
|May 29, 2025
Summary
This study reveals a significant causal link between signal transducer and activator of transcription 1 (STAT1) and systemic lupus erythematosus (SLE). Understanding this necroptosis pathway connection offers new therapeutic avenues for SLE patients.
Area of Science:
- Genetics and Immunology
- Autoimmune Disease Research
- Molecular Pathogenesis
Background:
- Systemic lupus erythematosus (SLE) frequently affects women of reproductive age, often co-occurring with other autoimmune conditions.
- Current SLE treatments are non-curative, have significant side effects, and advanced therapies like biologics and CAR-T cells are costly.
- Emerging evidence implicates necroptosis as a key factor in SLE development, necessitating investigation into its genetic underpinnings.
Purpose of the Study:
- To investigate the potential causal relationship between signal transducer and activator of transcription 1 (STAT1) and systemic lupus erythematosus (SLE) using Mendelian randomization.
- To analyze the role of the necroptosis pathway, specifically the interferon/receptor-interacting serine/threonine-protein kinase 3/phosphorylase glycogen axis, in SLE pathogenesis.
- To provide a genetic basis for understanding SLE and to identify potential targets for novel therapeutic interventions.
Main Methods:
- A Mendelian randomization (MR) analysis was performed using summary-level data from genome-wide association studies.
- 241 single nucleotide polymorphisms (SNPs) associated with the necroptosis pathway were used as instrumental variables.
- Inverse variance weighted (IVW) method was the primary analysis, supplemented by sensitivity analyses (leave-one-out, MR-Egger, MR-PRESSO) to ensure robustness.
Main Results:
- A significant causal relationship was identified between STAT1 and SLE (Odds Ratio: 0.556, 95% CI: 0.335-0.92, P=0.023).
- Sensitivity analyses confirmed the robustness of the findings, indicating a reliable genetic association.
- The study highlights the involvement of the necroptosis pathway, mediated by STAT1, in the pathogenesis of SLE.
Conclusions:
- The Mendelian randomization analysis provides strong evidence for a causal genetic link between STAT1 and SLE.
- These findings offer novel insights into the molecular mechanisms driving SLE.
- This research lays the groundwork for developing new diagnostic and therapeutic strategies targeting the STAT1-necroptosis axis in SLE.
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