Gordan Lauc, Jennifer E Huffman, Maja Pučić, Lina Zgaga, Barbara Adamczyk, Ana Mužinić, Mislav Novokmet, Ozren Polašek, Olga Gornik, Jasminka Krištić, Toma Keser, Veronique Vitart, Blanca Scheijen, Hae-Won Uh, Mariam Molokhia, Alan Leslie Patrick, Paul McKeigue, Ivana Kolčić, Ivan Krešimir Lukić, Olivia Swann, Frank N van Leeuwen, L Renee Ruhaak, Jeanine J Houwing-Duistermaat, P Eline Slagboom, Marian Beekman, Anton J M de Craen, André M Deelder, Qiang Zeng, Wei Wang, Nicholas D Hastie, Ulf Gyllensten, James F Wilson, Manfred Wuhrer, Alan F Wright, Pauline M Rudd, Caroline Hayward, Yurii Aulchenko, Harry Campbell, Igor Rudan
Glycosylation of immunoglobulin G (IgG) influences IgG effector function by modulating binding to Fc receptors. To identify genetic loci associated with IgG glycosylation, we quantitated N-linked IgG glycans using two approaches. After isolating IgG from human plasma, we performed 77 quantitative measurements of N-glycosylation using ultra-performance liquid chromatography (UPLC) in 2,247 individuals from four European discovery populations. In parallel, we measured IgG N-glycans using MALDI-TOF mass spectrometry (MS) in a replication cohort of 1,848 Europeans...
2013: PLoS Genetics