Genetic architecture of routinely acquired blood tests in a British South Asian cohort

Understanding the genetic basis of routinely-acquired blood tests can provide insights into several aspects of human physiology. We report a genome-wide association study of 42 quantitative blood test traits defined using Electronic Healthcare Records (EHRs) of ~50,000 British Bangladeshi and British Pakistani adults. We demonstrate a causal variant within the PIEZO1 locus which was associated with alterations in red cell traits and glycated haemoglobin. Conditional analysis and within-ancestry fine mapping confirmed that this signal is driven by a missense variant - chr16-88716656-G-T<sub>T</sub> - which is common in South Asian ancestries (MAF 3.9%) but ultra-rare in other ancestries. Carriers of the T allele had lower mean HbA1c values, lower HbA1c values for a given level of random or fasting glucose, and delayed diagnosis of Type 2 Diabetes Mellitus. Our results shed light on the genetic basis of clinically-relevant traits in an under-represented population, and emphasise the importance of ancestral diversity in genetic studies.

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Journal
Nature Communications
Published
2024-10-16
DOI
https://doi.org/10.1038/s41467-024-53091-x
Citations
18
Primary Topic
Genetic Associations and Epidemiology
Type
article
Field-Weighted Citation Impact
9.91

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article

Genetic architecture of routinely acquired blood tests in a British South Asian cohort

Daniel G. MacArthur, Chris Griffiths, Daniel Shiloh Malawsky, Gerome D. Breen et al.
18 citations
Nature Communications
Genetic Associations and Epidemiology
9.91
article

Genetic architecture of routinely acquired blood tests in a British South Asian cohort

Daniel G. MacArthur, Chris Griffiths, Daniel Shiloh Malawsky, Gerome D. Breen, Maik Pietzner, David Collier, Klaudia Walter, Shwetha Ramachandrappa, Stavroula Kanoni, Rohini Mathur, John McDermott, Benjamin M. Jacobs, Mohammed Bodrul Mazid, Ruth Dobson, David A. van Heel, Elena Arciero, Julia Zöllner, Robin G. Lerner, Teng Heng, Kamrul Islam, Caroline Winckley, Megan Clinch, Michael A. Simpson, Richard C. Trembath, Dan Mason, Sam Hodgson, Caroline E Morton, Faiza Durrani, Cath Lavery, Charles Curtis, Shapna Hussain, Miriam Samuel, Saeed Bidi, Omar Asgar, John Solly, Fabíola Eto, Claudia Langenberg, S. M. Wood, Qin Qin Huang, Elizabeth Owor, Samiha Rahman, Marie Spreckley, Mohammad Yaser Anwar, Sarah Finer, Asma Qureshi, Moneeza K. Siddiqui, Daniel Stow, Hilary C. Martin, Joanne E. Harvey, William G. Newman, Shabana Chaudhary, Matt Hurles, Ceri Durham, Nishat Safa, Grainne Colligan, Panos Deloukas, Joseph Gafton, Sang Hyuck Lee, James Broster, Michael D. Taylor, Ahsan Khan, Shaheen Akhtar, Raymond Chung, Samina Ashraf, Vivek Iyer, John Wright, Jessry Russell, Nasir Uddin, Karen Tricker, Karen A. Hunt, Mehru Reza, Ana Angel Garcia, Ben Jacobs
article en
18 citations

Abstract

Understanding the genetic basis of routinely-acquired blood tests can provide insights into several aspects of human physiology. We report a genome-wide association study of 42 quantitative blood test traits defined using Electronic Healthcare Records (EHRs) of ~50,000 British Bangladeshi and British Pakistani adults. We demonstrate a causal variant within the PIEZO1 locus which was associated with alterations in red cell traits and glycated haemoglobin. Conditional analysis and within-ancestry fine mapping confirmed that this signal is driven by a missense variant - chr16-88716656-G-T<sub>T</sub> - which is common in South Asian ancestries (MAF 3.9%) but ultra-rare in other ancestries. Carriers of the T allele had lower mean HbA1c values, lower HbA1c values for a given level of random or fasting glucose, and delayed diagnosis of Type 2 Diabetes Mellitus. Our results shed light on the genetic basis of clinically-relevant traits in an under-represented population, and emphasise the importance of ancestral diversity in genetic studies.

Nature CommunicationsVol. 15(1)
Garvan Institute of Medical Research (AU), University of Bradford (GB), Queen Mary University of London (GB), King's College London (GB), Barts Health NHS Trust (GB), Royal London Hospital (GB), Action for ME (GB), Wellcome Sanger Institute (GB), University of Manchester (GB), Manchester University NHS Foundation Trust (GB), Berlin Institute of Health at Charité - Universitätsmedizin Berlin (DE), William Harvey Research Institute (GB), NIHR Research Delivery Network (GB), Bradford Teaching Hospitals NHS Foundation Trust (GB), University College London (GB)
Bristol-Myers Squibb, Pfizer, GlaxoSmithKline, Alnylam Pharmaceuticals, Aims2Cure, Wellcome Trust, Broad Institute, Barts Charity, Maze Therapeutics, National Institute for Health and Care Research, Multiple Sclerosis Society, King's College London, Public Health England, Novo Nordisk, Barts Health NHS Trust, Medical Research Council, Engineering and Physical Sciences Research Council, Economic and Social Research Council
Good health and well-being
Openalex Percentile: Top 1%
Genetic Associations and Epidemiology
9.91
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