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Bopp, Sandra K [Author]; Heilbronner, Urs [Author]; Schlattmann, Peter [Author]; Buspavanich, Pichit J [Author]; Lang, Undine E [Author]; Heinz, Andreas [Author]; Schulze, Thomas G [Author]; Adli, Mazda [Author]; Mühleisen, Thomas W [Author]; Ricken, Roland [Author]

A GWAS top hit for circulating leptin is associated with weight gain but not with leptin protein levels in lithium-augmented patients with major depression

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  • Media type: E-Article
  • Title: A GWAS top hit for circulating leptin is associated with weight gain but not with leptin protein levels in lithium-augmented patients with major depression
  • Contributor: Bopp, Sandra K [Author]; Heilbronner, Urs [Author]; Schlattmann, Peter [Author]; Buspavanich, Pichit J [Author]; Lang, Undine E [Author]; Heinz, Andreas [Author]; Schulze, Thomas G [Author]; Adli, Mazda [Author]; Mühleisen, Thomas W [Author]; Ricken, Roland [Author]
  • Published: Elsevier, 2021
  • Published in: European neuropsychopharmacology 53, 114 - 119 (2021). doi:10.1016/j.euroneuro.2021.09.007
  • Language: English
  • DOI: https://doi.org/10.1016/j.euroneuro.2021.09.007
  • ISSN: 0924-977X; 1873-7862
  • Origination:
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  • Description: Lithium-treated patients often suffer from weight gain as a common adverse event. In an earlier investigation, we found an impact of two single-nucleotide polymorphisms (rs10487506 and rs2278815) at the leptin gene on weight gain but not on leptin protein levels in serum under lithium augmentation. A recent genome-wide association study identified a polymorphism at the leptin gene locus (rs10487505) associated with circulating leptin protein levels. To characterize potential effects of this variant in acute major depressive disorder, we investigated body mass indices from 180 lithium-augmented patients and serum concentrations of leptin protein from 89 patients using linear mixed model analyses and rs6979832, a proxy SNP of rs10487505. Body mass index was measured before and after 4 weeks of lithium augmentation, in a subsample also after 4 and 7 months. Leptin serum levels were measured before and during lithium augmentation. G-allele homozygotes of rs6979832 had a significantly lower body mass index increase during observation compared to A-allele hetero- and homozygotes. However, we found no influence on leptin serum levels. Joint analyses of rs6979832 with the previously investigated polymorphisms rs10487506 and rs2278815, and expressed quantitative trait data, suggest a complex interplay between SNP alleles at the leptin locus. These results strongly support our earlier findings that common genetic variation at the leptin gene locus may be involved in lithium augmentation-associated weight gain in major depressive disorder.
  • Access State: Open Access