Marjan Ilkov’s research focuses on the intersection of proteomics and complex disease genetics, with a particular emphasis on identifying molecular drivers of metabolic conditions. Publicly indexed outputs suggest a significant contribution to the study of co-regulatory networks of human serum proteins, a 2018 Science publication with over 720 citations that links genetic variation to systemic disease. Ilkov’s work frequently explores how circulating protein signatures can serve as causal candidates for type 2 diabetes, utilizing large-scale proteomic datasets to bridge the gap between genomic loci and clinical phenotypes. Beyond metabolic health, Ilkov has contributed to large-scale consortia efforts, including a multi-ancestry sleep-by-SNP interaction analysis that identified lipid loci influenced by sleep duration. Recent indexed work from 2025 and 2026 indicates an expansion into neurogenomics, specifically involving