FLG and ichthyosis vulgaris: HFE rs1800562 causing hereditary hemochromatosis presented the highest frequency (7.54%), followed by BTD rs13078881 for biotinidase deficiency (7.08%), FLG rs61816761 for ichthyosis vulgaris and atopic dermatitis (3.38%), and FANCM rs147021911 for Fanconi anemia (3.08%).