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Genome-wide association study of pancreatic fat: The Multiethnic Cohort Adiposity Phenotype Study. | LitMetric

AI Article Synopsis

  • - A study investigated the genetic factors affecting pancreatic fat content, which is linked to health issues like diabetes and metabolic syndrome, involving 804 participants from a diverse cohort.
  • - Two significant genetic variants were identified: rs73449607 on chromosome 13, more common in African Americans, and rs7996760 on chromosome 6, more prevalent in European Americans, both associated with levels of pancreatic fat and diabetes risk.
  • - These variants are connected to genes that impact pancreatic function, hinting at a genetic role in pancreatic fat accumulation and its potential relationship with type 2 diabetes.

Article Abstract

Several studies have found associations between higher pancreatic fat content and adverse health outcomes, such as diabetes and the metabolic syndrome, but investigations into the genetic contributions to pancreatic fat are limited. This genome-wide association study, comprised of 804 participants with MRI-assessed pancreatic fat measurements, was conducted in the ethnically diverse Multiethnic Cohort-Adiposity Phenotype Study (MEC-APS). Two genetic variants reaching genome-wide significance, rs73449607 on chromosome 13q21.2 (Beta = -0.67, P = 4.50x10-8) and rs7996760 on chromosome 6q14 (Beta = -0.90, P = 4.91x10-8) were associated with percent pancreatic fat on the log scale. Rs73449607 was most common in the African American population (13%) and rs79967607 was most common in the European American population (6%). Rs73449607 was also associated with lower risk of type 2 diabetes (OR = 0.95, 95% CI = 0.89-1.00, P = 0.047) in the Population Architecture Genomics and Epidemiology (PAGE) Study and the DIAbetes Genetics Replication and Meta-analysis (DIAGRAM), which included substantial numbers of non-European ancestry participants (53,102 cases and 193,679 controls). Rs73449607 is located in an intergenic region between GSX1 and PLUTO, and rs79967607 is in intron 1 of EPM2A. PLUTO, a lncRNA, regulates transcription of an adjacent gene, PDX1, that controls beta-cell function in the mature pancreas, and EPM2A encodes the protein laforin, which plays a critical role in regulating glycogen production. If validated, these variants may suggest a genetic component for pancreatic fat and a common etiologic link between pancreatic fat and type 2 diabetes.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8323875PMC
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0249615PLOS

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