A survey of functional dyspepsia in 361,360 individuals: Phenotypic and genetic cross-disease analyses
Neurogastroenterology and Motility, ISSN: 1365-2982, Vol: 34, Issue: 6, Page: e14236
2022
- 10Citations
- 30Captures
- 1Mentions
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Most Recent News
Reports from BIODONOSTIA Health Research Institute Advance Knowledge in Functional Dyspepsia (A Survey of Functional Dyspepsia In 361,360 Individuals: Phenotypic and Genetic Cross-disease Analyses)
2023 AUG 08 (NewsRx) -- By a News Reporter-Staff News Editor at Gastroenterology Daily News -- A new study on Digestive System Diseases and Conditions
Article Description
Background: Functional dyspepsia (FD) is a common gastrointestinal condition of poorly understood pathophysiology. While symptoms’ overlap with other conditions may indicate common pathogenetic mechanisms, genetic predisposition is suspected but has not been adequately investigated. Methods: Using healthcare, questionnaire, and genetic data from three large population-based biobanks (UK Biobank, EGCUT, and MGI), we surveyed FD comorbidities, heritability, and genetic correlations across a wide spectrum of conditions and traits in 10,078 cases and 351,282 non-FD controls of European ancestry. Key Results: In UK Biobank, 281 diagnoses were detected at increased prevalence in FD, based on healthcare records. Among these, gastrointestinal conditions (OR = 4.0, p < 1.0 × 10), anxiety disorders (OR = 2.3, p < 1.4 × 10), ischemic heart disease (OR = 2.2, p < 2.3 × 10), and infectious and parasitic diseases (OR = 2.1, p = 1.5 × 10) showed strongest association with FD. Similar results were obtained in an analysis of self-reported conditions and use of medications from questionnaire data. Based on a genome-wide association meta-analysis of genotypes across all cohorts, FD heritability was estimated close to 5% ((Formula presented.) = 0.047, p = 0.014). Genetic correlations indicate FD predisposition is shared with several other diseases and traits (r > 0.344), mostly overlapping with those also enriched in FD patients. Suggestive (p < 5.0 × 10) association with FD risk was detected for 13 loci, with 2 showing nominal replication (p < 0.05) in an independent cohort of 192 FD patients. Conclusions & Inferences: FD has a weak heritable component that shows commonalities with multiple conditions across a wide spectrum of pathophysiological domains. This new knowledge contributes to a better understanding of FD etiology and may have implications for improving its treatment.
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