A recent genome-wide association study (GWAS) provides new insights into the genetic basis of childhood migraine and allows for precision therapeutic development strategies targeting migraine patients of African-American ancestry. Researchers conducted a GWAS of 380 African-American children and 2129 ancestry-matched controls to identify variants associated with migraine. They then attempted to replicate their primary analysis in an independent cohort of 233 African-American patients and 4038 non-migraine control subjects. They found:
- Common variants at 5q33.1 are associated with migraine risk in African-American children.
- The association was validated in an independent study for an overall meta-analysis P-value of 3.81×10 −10.
- eQTL (expression quantitative trait loci) analysis of the Genotype-Tissue Expression data also shows the genotypes of rs72793414 were strongly correlated with the mRNA expression levels of NMUR2 at 5q33.1.
Chang X, Pellegrino R, Garifallou, et al. Common variants at 5q33.1 predispose to migraine in African-American children. [Published online ahead of print September 28, 2018]. J Med Genet . doi:10.1136/jmedgenet-2018-105359.