Steroid 21-Hydroxylase steroid 21 monooxygenase 16 Adrenal Hyperplasia, Congenital 14 Humans 14 congenital adrenal hyperplasia 14 human 14 article 12 CYP21A2 protein, human 10 Mutation 10 genetics 10 allele 8 chemistry 8 gene mutation 8 genotype 8 mutation 8 point mutation 8 Alleles 6 Argentina 6 Genotype 6 Models, Molecular 6 Point Mutation 6 Protein Stability 6 controlled study 6 enzyme activity 6 exon 6 hydroxyprogesterone 6 phenotype 6 protein stability 6 sequence analysis 6 steroid 21 monooxygenase deficiency 6