Rare Heterozygous Loss-of-Function Variants in the Human GLP-1 Receptor Are Not Associated With Cardiometabolic Phenotypes
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Rare Heterozygous Loss-of-Function Variants in the Human GLP-1 Receptor Are Not Associated With Cardiometabolic Phenotypes. / Melchiorsen, Josefine U; Sørensen, Kimmie V; Bork-Jensen, Jette; Kizilkaya, Hüsün S; Gasbjerg, Lærke S; Hauser, Alexander S; Rungby, Jørgen; Sørensen, Henrik T.; Vaag, Allan; Nielsen, Jens S.; Pedersen, Oluf; Linneberg, Allan; Hartmann, Bolette; Gjesing, Anette P; Holst, Jens J; Hansen, Torben; Rosenkilde, Mette M; Grarup, Niels.
I: Journal of Clinical Endocrinology and Metabolism, Bind 108, Nr. 11, 2023, s. 2821–2833.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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T1 - Rare Heterozygous Loss-of-Function Variants in the Human GLP-1 Receptor Are Not Associated With Cardiometabolic Phenotypes
AU - Melchiorsen, Josefine U
AU - Sørensen, Kimmie V
AU - Bork-Jensen, Jette
AU - Kizilkaya, Hüsün S
AU - Gasbjerg, Lærke S
AU - Hauser, Alexander S
AU - Rungby, Jørgen
AU - Sørensen, Henrik T.
AU - Vaag, Allan
AU - Nielsen, Jens S.
AU - Pedersen, Oluf
AU - Linneberg, Allan
AU - Hartmann, Bolette
AU - Gjesing, Anette P
AU - Holst, Jens J
AU - Hansen, Torben
AU - Rosenkilde, Mette M
AU - Grarup, Niels
N1 - © The Author(s) 2023. Published by Oxford University Press on behalf of the Endocrine Society.
PY - 2023
Y1 - 2023
N2 - CONTEXT: Impact of lost GLP-1 receptor function in human physiology.OBJECTIVE: Identify coding nonsynonymous GLP1R variants in Danish individuals to link their in vitro phenotypes and clinical phenotypic associations.METHODS: We sequenced GLP1R in 8,642 Danish individuals with type 2 diabetes or normal glucose tolerance and examined the ability of nonsynonymous variants to bind GLP-1 and to signal in transfected cells via cAMP formation and beta-arrestin recruitment. We performed a cross-sectional study between the burden of loss-of-signalling (LoS) variants and cardiometabolic phenotypes in 2,930 patients with type 2 diabetes and 5,712 participants in a population-based cohort. Furthermore, we studied the association between cardiometabolic phenotypes and the burden of the LoS variants and 60 partly overlapping predicted loss-of-function (pLoF) GLP1R variants found in 330,566 unrelated Caucasian exome-sequenced participants in the UK Biobank cohort.RESULTS: We identified 36 nonsynonymous variants in GLP1R of which 10 had a statistically significant loss in GLP-1-induced cAMP signalling compared to wildtype. However, no association was observed between the LoS variants and type 2 diabetes, although LoS variant carriers had a minor increased fasting plasma glucose level. Moreover, pLoF variants from the UK Biobank also did not reveal substantial cardiometabolic associations, despite a small effect on HbA1c.CONCLUSION: Since no homozygous LoS nor pLoF variants were identified and heterozygous carriers had similar cardiometabolic phenotype as non-carriers, we conclude that GLP-1R may be of particular importance in human physiology, due to a potential evolutionary intolerance of harmful homozygous GLP1R variants.
AB - CONTEXT: Impact of lost GLP-1 receptor function in human physiology.OBJECTIVE: Identify coding nonsynonymous GLP1R variants in Danish individuals to link their in vitro phenotypes and clinical phenotypic associations.METHODS: We sequenced GLP1R in 8,642 Danish individuals with type 2 diabetes or normal glucose tolerance and examined the ability of nonsynonymous variants to bind GLP-1 and to signal in transfected cells via cAMP formation and beta-arrestin recruitment. We performed a cross-sectional study between the burden of loss-of-signalling (LoS) variants and cardiometabolic phenotypes in 2,930 patients with type 2 diabetes and 5,712 participants in a population-based cohort. Furthermore, we studied the association between cardiometabolic phenotypes and the burden of the LoS variants and 60 partly overlapping predicted loss-of-function (pLoF) GLP1R variants found in 330,566 unrelated Caucasian exome-sequenced participants in the UK Biobank cohort.RESULTS: We identified 36 nonsynonymous variants in GLP1R of which 10 had a statistically significant loss in GLP-1-induced cAMP signalling compared to wildtype. However, no association was observed between the LoS variants and type 2 diabetes, although LoS variant carriers had a minor increased fasting plasma glucose level. Moreover, pLoF variants from the UK Biobank also did not reveal substantial cardiometabolic associations, despite a small effect on HbA1c.CONCLUSION: Since no homozygous LoS nor pLoF variants were identified and heterozygous carriers had similar cardiometabolic phenotype as non-carriers, we conclude that GLP-1R may be of particular importance in human physiology, due to a potential evolutionary intolerance of harmful homozygous GLP1R variants.
U2 - 10.1210/clinem/dgad290
DO - 10.1210/clinem/dgad290
M3 - Journal article
C2 - 37235780
VL - 108
SP - 2821
EP - 2833
JO - Journal of Clinical Endocrinology and Metabolism
JF - Journal of Clinical Endocrinology and Metabolism
SN - 0021-972X
IS - 11
ER -
ID: 350988852