Gene: cytochrome P450, family 21, subfamily A, polypeptide 2; CYP21A2


Gene Symbol: CYP21A2
OMIM: 613815
Chromosome location: 6p21.33

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Adrenal hyperplasia, congenital, due to 21-hydroxylase deficiency || c.955C>T

Phenotype:    Adrenal hyperplasia, congenital, due to 21-hydroxylase deficiency
Dna Change:    c.955C>T
Protein Change:    p.Gln319X (Q318X)
Mutation Type:    Substitution
Mutation Effect:    Nonsense
Location:    exon 8
Transcript:    NM_000500.7

PopulationEthnic GroupRegionMutation FrquencyCoalescence TimeReference
LebanonNANANANADelague V et al., 2000Delague V, Souraty N, Khallouf E, Tardy V, Chouery E, Halaby G, Loiselet J, Morel Y, Mégarbané A, . Mutational analysis in Lebanese patients with congenital adrenal hyperplasia due to a deficit in 21-hydroxylase.. Horm. Res.. 2000; 53(2):77-82
MoroccoNAFez19.4%NAAbid F et al., 2008Abid F, Tardy V, Gaouzi A, El Hessni A, Morel Y, Chabraoui L, . CYP21A2 gene mutation analysis in Moroccan patients with classic form of 21-hydroxylase deficiency: high regional prevalence of p.Q318X mutation and identification of a novel p.L353R mutation.. Clin. Chem. Lab. Med.. 2008; 46(12):1707-13
SpainNANA8.3%NAEzquieta B et al., 2002Ezquieta B, Cueva E, Oyarzábal M, Oliver A, Varela JM, Jariego C, . Gene conversion (655G splicing mutation) and the founder effect (Gln318Stop) contribute to the most frequent severe point mutations in congenital adrenal hyperplasia (21-hydroxylase deficiency) in the Spanish population.. Clin. Genet.. 2002; 62(2):181-8
TunisiaNANA35.3%NAKharrat M et al., 2004Kharrat M, Tardy V, M'Rad R, Maazoul F, Jemaa LB, Refaï M, Morel Y, Chaabouni H, . Molecular genetic analysis of Tunisian patients with a classic form of 21-hydroxylase deficiency: identification of four novel mutations and high prevalence of Q318X mutation.. J. Clin. Endocrinol. Metab.. 2004; 89(1):368-74

Adrenal hyperplasia, congenital, due to 21-hydroxylase deficiency || c.293-13C>G (c.IVS2+13A/C>G)

Phenotype:    Adrenal hyperplasia, congenital, due to 21-hydroxylase deficiency
Dna Change:    c.293-13C>G (c.IVS2+13A/C>G)
Protein Change:   
Mutation Type:    Substitution
Mutation Effect:    Splice site
Location:    intron 2
Transcript:    NM_000500.7

PopulationEthnic GroupRegionMutation FrquencyCoalescence TimeReference
MoroccoNANA47%NAAbid F et al., 2008Abid F, Tardy V, Gaouzi A, El Hessni A, Morel Y, Chabraoui L, . CYP21A2 gene mutation analysis in Moroccan patients with classic form of 21-hydroxylase deficiency: high regional prevalence of p.Q318X mutation and identification of a novel p.L353R mutation.. Clin. Chem. Lab. Med.. 2008; 46(12):1707-13
TunisiaNANA17.6%NAKharrat M et al., 2004Kharrat M, Tardy V, M'Rad R, Maazoul F, Jemaa LB, Refaï M, Morel Y, Chaabouni H, . Molecular genetic analysis of Tunisian patients with a classic form of 21-hydroxylase deficiency: identification of four novel mutations and high prevalence of Q318X mutation.. J. Clin. Endocrinol. Metab.. 2004; 89(1):368-74

Adrenal hyperplasia, congenital, due to 21-hydroxylase deficiency || c.2T>C

Phenotype:    Adrenal hyperplasia, congenital, due to 21-hydroxylase deficiency
Dna Change:    c.2T>C
Protein Change:    p.Met1?
Mutation Type:    Substitution
Mutation Effect:   
Location:    exon 1
Transcript:    NM_000500.7

PopulationEthnic GroupRegionMutation FrquencyCoalescence TimeReference
TurkeyNANA6 families/45 familiesNAToraman B et al., 2013Toraman B, Ökten A, Kalay E, Karagüzel G, Dinçer T, Açıkgöz EG, Karagüzel A, . Investigation of CYP21A2 mutations in Turkish patients with 21-hydroxylase deficiency and a novel founder mutation.. Gene. 2013; 513(1):202-8

Adrenal hyperplasia, congenital, due to 21-hydroxylase deficiency ||

Phenotype:    Adrenal hyperplasia, congenital, due to 21-hydroxylase deficiency
Dna Change:   
Protein Change:    R444X
Mutation Type:    Substitution
Mutation Effect:    Nonsense
Location:   
Transcript:    NM_000500.4

PopulationEthnic GroupRegionMutation FrquencyCoalescence TimeReference
SpainNANA7 patients/138 unrelated patientsNALoidi L et al., 2006Loidi L, Quinteiro C, Parajes S, Barreiro J, Lestón DG, Cabezas-Agrícola JM, Sueiro AM, Araujo-Vilar D, Catro-Feijóo L, Costas J, Pombo M, Domínguez F, . High variability in CYP21A2 mutated alleles in Spanish 21-hydroxylase deficiency patients, six novel mutations and a founder effect.. Clin. Endocrinol. (Oxf). 2006; 64(3):330-6

References

Abid F, Tardy V, Gaouzi A, El Hessni A, Morel Y, Chabraoui L, CYP21A2 gene mutation analysis in Moroccan patients with classic form of 21-hydroxylase deficiency: high regional prevalence of p.Q318X mutation and identification of a novel p.L353R mutation.Clin. Chem. Lab. Med.. 2008; 46(12):1707-13

Delague V, Souraty N, Khallouf E, Tardy V, Chouery E, Halaby G, Loiselet J, Morel Y, Mégarbané A, Mutational analysis in Lebanese patients with congenital adrenal hyperplasia due to a deficit in 21-hydroxylase.Horm. Res.. 2000; 53(2):77-82

Ezquieta B, Cueva E, Oyarzábal M, Oliver A, Varela JM, Jariego C, Gene conversion (655G splicing mutation) and the founder effect (Gln318Stop) contribute to the most frequent severe point mutations in congenital adrenal hyperplasia (21-hydroxylase deficiency) in the Spanish population.Clin. Genet.. 2002; 62(2):181-8

Kharrat M, Tardy V, M'Rad R, Maazoul F, Jemaa LB, Refaï M, Morel Y, Chaabouni H, Molecular genetic analysis of Tunisian patients with a classic form of 21-hydroxylase deficiency: identification of four novel mutations and high prevalence of Q318X mutation.J. Clin. Endocrinol. Metab.. 2004; 89(1):368-74

Loidi L, Quinteiro C, Parajes S, Barreiro J, Lestón DG, Cabezas-Agrícola JM, Sueiro AM, Araujo-Vilar D, Catro-Feijóo L, Costas J, Pombo M, Domínguez F, High variability in CYP21A2 mutated alleles in Spanish 21-hydroxylase deficiency patients, six novel mutations and a founder effect.Clin. Endocrinol. (Oxf). 2006; 64(3):330-6

Toraman B, Ökten A, Kalay E, Karagüzel G, Dinçer T, Açıkgöz EG, Karagüzel A, Investigation of CYP21A2 mutations in Turkish patients with 21-hydroxylase deficiency and a novel founder mutation.Gene. 2013; 513(1):202-8