Flowcharts. (A) Main outline of the sequential genome-wide association study (GWAS) strategy and transethnic analysis. (B) Flowchart of epidemiologic analyses. eQTL, expression quantitative trait loci; IDF-AFR, Ile-de-France African; IDF-EUR, Ile-de-France European; IDF-MAG, Ile-de-France Maghrebian; NEPHROVIR, Children Cohort Nephrosis and Virus; QC, quality control; NEPTUNE, Nephrotic Syndrome Study Network; 3′ UTR, 3′ untranslated region.