ABC transporter ABCF1 ABCF1 gene ABCF1 protein, human ATP-Binding Cassette Transporters DNA Copy Number Variations Dengue Genetic Predisposition to Disease Genetic Variation Genotype Humans MHC Malaysia Rare copy number variation TERT gene article copy number variation cytokine storm dengue disease association gene gene amplification gene dosage gene location gene loss genetic association genetic predisposition genetic variability genetics genotype