Genetic Studies of Leptin Concentrations Implicate Leptin in the Regulation of Early Adiposity

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Leptin influences food intake by informing the brain about the status of body fat stores. Rare LEP mutations associated with congenital leptin deficiency cause severe early-onset obesity that can be mitigated by administering leptin. However, the role of genetic regulation of leptin in polygenic obesity remains poorly understood. We performed an exome-based analysis in up to 57,232 individuals of diverse ancestries to identify genetic variants that influence adiposity-adjusted leptin concentrations. We identify five novel variants, including four missense variants, in LEP, ZNF800, KLHL31, and ACTL9, and one intergenic variant near KLF14. The missense variant Val94Met (rs17151919) in LEP was common in individuals of African ancestry only, and its association with lower leptin concentrations was specific to this ancestry (P = 2 × 10-16, n = 3,901). Using in vitro analyses, we show that the Met94 allele decreases leptin secretion. We also show that the Met94 allele is associated with higher BMI in young African-ancestry children but not in adults, suggesting that leptin regulates early adiposity.

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By the author/editor: Yaghootkar, Hani ...; Zhang, Yiying; Spracklen, Cassa ...; Karaderi, Tugce; Huang, Lam Opal; Bradfield, Jonat ...; show more...; Schurmann, Claud ...; Fine, Rebecca S.; Preuss, Michael ...; Kutalik, Zultan; Lind, Lars; Lu, Yingchang; Metz, Sophia; Willems, Sara M.; Li-Gao, Ruifang; Grarup, Niels; Wang, Shuai; Molnos, Sophie; Sandoval-Zárate, ...; Nalls, Mike A.; Lange, Leslie A.; Haesser, Jeffrey; Guo, Xiuqing; Lyytikäinen, Leo ...; Feitosa, Mary; Sitlani, Colleen ...; Venturini, Crist ...; Mahajan, Anubha; Kacprowski, Tim; Wang, Carol A.; Chasman, Daniel ...; Amin, Najaf; Broer, Linda; Robertson, Neil; Young, Kristin L ...; Allison, Matthew; Auer, Paul L.; Blüher, Matthias; Borja, Judith B.; Bork-Jensen, Jet ...; Carrasquilla, Ge ...; Christofidou, Pa ...; Demirkan, Ayse; Doege, Claudia A ...; Garcia, Melissa ...; Graff, Mariaelis ...; Guo, Kaiying; Hakonarson, Hako ...; Hong, Jaeyoung; Chen, Yii-Der Id ...; Jackson, Rebecca; Jakupović, Hermi ...; Jousilahti, Pekk ...; Justice, Anne E.; Kähönen, Mika; Kizer, Jorge R.; Kriebel, Jennife ...; LeDuc, Charles A ...; Li, Jin; Luan, Jian'an; Mackey, David A.; Mangino, Massimo; Männistö, Satu; Martin Carli, Ja ...; Medina-Gomez, Ca ...; Mook-Kanamori, D ...; Morris, Andrew P ...; de Mutsert, René ...; Nauck, Matthias; Prokic, Ivana; Pennell, Craig E ...; Pradhan, Arund D ...; Psaty, Bruce M.; Raitakari, Olli ...; Scott, Robert A.; Skaaby, Tea; Strauch, Konstan ...; Taylor, Kent D.; Teumer, Alexande ...; Uitterlinden, An ...; Wu, Ying; Yao, Jie; Walker, Mark; North, Kari E.; Kovacs, Peter; Ikram, M. Arfan; van Duijn, Corne ...; Ridker, Paul M.; Lye, Stephen; Homuth, Georg; Ingelsson, Erik; Spector, Tim D.; McKnight, Barbar ...; Province, Michae ...; Lehtimäki, Terho; Adair, Linda S.; Rotter, Jerome I ...; Reiner, Alexande ...; Wilson, James G.; Harris, Tamara B ...; Ripatti, Samuli; Grallert, Harald; Meigs, James B.; Salomaa, Veikko; Hansen, Torben; van Dijk, Ko Wil ...; Wareham, Nichola ...; Grant, Struan F. ...; Langenberg, Clau ...; Frayling, Timoth ...; Lindgren, Cecili ...; Mohlke, Karen L.; Leibel, Rudolph ...; Loos, Ruth J.F.; Kilpeläinen, Tuo ...; show less...

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MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Basic Medicine; and Medical Genetics

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Endocrinology an ...

Articles in the publication: Diabetes

By the university: Luleå University of Technology; Uppsala University

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