Cargando…

Heritability estimates for 361 blood metabolites across 40 genome-wide association studies

Metabolomics examines the small molecules involved in cellular metabolism. Approximately 50% of total phenotypic differences in metabolite levels is due to genetic variance, but heritability estimates differ across metabolite classes. We perform a review of all genome-wide association and (exome-) s...

Descripción completa

Detalles Bibliográficos
Autores principales: Hagenbeek, Fiona A., Pool, René, van Dongen, Jenny, Draisma, Harmen H. M., Jan Hottenga, Jouke, Willemsen, Gonneke, Abdellaoui, Abdel, Fedko, Iryna O., den Braber, Anouk, Visser, Pieter Jelle, de Geus, Eco J. C. N., Willems van Dijk, Ko, Verhoeven, Aswin, Suchiman, H. Eka, Beekman, Marian, Slagboom, P. Eline, van Duijn, Cornelia M., Harms, Amy C., Hankemeier, Thomas, Bartels, Meike, Nivard, Michel G., Boomsma, Dorret I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6946682/
https://www.ncbi.nlm.nih.gov/pubmed/31911595
http://dx.doi.org/10.1038/s41467-019-13770-6
Descripción
Sumario:Metabolomics examines the small molecules involved in cellular metabolism. Approximately 50% of total phenotypic differences in metabolite levels is due to genetic variance, but heritability estimates differ across metabolite classes. We perform a review of all genome-wide association and (exome-) sequencing studies published between November 2008 and October 2018, and identify >800 class-specific metabolite loci associated with metabolite levels. In a twin-family cohort (N = 5117), these metabolite loci are leveraged to simultaneously estimate total heritability (h(2)(total)), and the proportion of heritability captured by known metabolite loci (h(2)(Metabolite-hits)) for 309 lipids and 52 organic acids. Our study reveals significant differences in h(2)(Metabolite-hits) among different classes of lipids and organic acids. Furthermore, phosphatidylcholines with a high degree of unsaturation have higher h(2)(Metabolite-hits) estimates than phosphatidylcholines with low degrees of unsaturation. This study highlights the importance of common genetic variants for metabolite levels, and elucidates the genetic architecture of metabolite classes.