Pathogenic nonsense variant in the intestinal zinc transporter ZIP4, creating a premature stop codon (p.Trp401Ter) that abolishes ZIP4 function and causes autosomal recessive acrodermatitis enteropathica when inherited biallelically; heterozygous carriers retain adequate zinc absorption under normal conditions but warrant monitoring during high-demand states

X-linked intergenic variant near GPR174 (G protein-coupled receptor 174), a lysophosphatidylserine receptor expressed in lymphoid tissues; associated with modest rheumatoid arthritis risk, part of a GWAS signal at the GPR174/Xq21.1 locus

Intronic EDN1 variant modulating endothelin-1 expression; the T allele associates with elevated ET-1 levels, increased risk of persistent pulmonary hypertension of the newborn, aneurysm rebleeding after subarachnoid hemorrhage, and altered nitric oxide metabolism in women

Missense variant in VWF at codon 1381 (Thr→Ala); the Ala allele (C on plus strand) is the global majority allele and is associated with higher circulating von Willebrand factor levels and elevated thrombotic risk

Missense variant in the DNA damage recognition gene XPC that moderately reduces nucleotide excision repair capacity, with elevated risk for bladder and breast cancer, particularly in homozygous carriers and those with carcinogen exposure

Intronic BLK variant in the FAM167A-BLK regulatory locus that reduces B-lymphoid kinase expression and independently raises risk for systemic lupus erythematosus and related autoimmune diseases

Synonymous coding variant in CYP24A1 (vitamin D 24-hydroxylase) that tags functional haplotypes influencing vitamin D catabolism efficiency and cancer susceptibility

Missense variant in LTBP4 encoding Val194Ile; the A allele (Ile) forms the IAAM haplotype that binds latent TGF-β1 with higher avidity, reducing free TGF-β signaling and acting as a protective modifier of Duchenne muscular dystrophy severity — IAAM homozygotes retain ambulation approximately 1.8 years longer than VTTT carriers under glucocorticoid treatment

Intergenic variant near KCNH2 (hERG potassium channel) at 7q36.1 that shortens QTc interval and confers ~2.4x increased risk of early-onset lone atrial fibrillation in homozygous T allele carriers

Intronic PPARG variant associated with rate of change in insulin sensitivity over time, independent of adiposity