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Relationship between COVID-19 and hypopituitarism: A two-sample Mendelian randomization study
Xiyang Li1, Meichen Tian2, Xi Wang2
1Department of Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, NO.278 Baoguang Avenue, Xindu District, Chengdu, Sichuan 610500, China.
IBRO Neuroscience Reports
|January 28, 2026
Summary
This study found a causal link between COVID-19 and hypopituitarism, indicating an increased risk of developing this endocrine condition after SARS-CoV-2 infection. Post-infection monitoring for hypopituitarism is recommended.
Area of Science:
- Endocrinology
- Infectious Diseases
- Genetics
Background:
- COVID-19 is associated with nervous and endocrine system damage, including potential effects on the pituitary gland.
- The precise relationship between COVID-19 and hypopituitarism remains controversial and requires further investigation.
Purpose of the Study:
- To investigate the potential causal relationship between COVID-19 and hypopituitarism using Mendelian Randomization (MR) analysis.
- To assess whether genetic predisposition to COVID-19 influences the risk of developing hypopituitarism.
Main Methods:
- Utilized summary statistics from large European cohorts for COVID-19 and hypopituitarism.
- Employed MR analysis with independent genetic variants as instrumental variables.
- Applied multiple analytical methods including IVW, MR-Egger regression, weighted median, and weighted mode, alongside colocalization analysis.
Main Results:
- MR analysis revealed a significant causal association between COVID-19 and an increased risk of hypopituitarism (IVW OR=1.283, p=0.035).
- Sensitivity analyses supported a stable and suggestive causal link.
- Colocalization analysis indicated a low probability of shared causal variants.
Conclusions:
- Established a causal relationship between COVID-19 infection and an elevated risk of hypopituitarism.
- Highlights the need for vigilance regarding hypopituitarism development post-SARS-CoV-2 infection.
- Underscores the potential for long-term autonomic dysfunction in post-COVID-19 care.
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