Phenotype: Pseudovaginal perineoscrotal hypospadias (5 alpha-Steroid reductase deficiency)


OMIM: 264600
Inheritance: Autosomal recessive
Classification: Congenital malformations, deformations and chromosomal abnormalities

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SRD5A2 || IVS1-2A>G

Gene/Locus:    SRD5A2
Dna Change:    IVS1-2A>G
Protein Change:   
Mutation Type:    Substitution
Mutation Effect:    Splice site
Location:    intron 1
Transcript:    NM_000348.3

PopulationEthnic GroupRegionMutation FrquencyCoalescence TimeReference
CyprusGreek Cypriot originNA3 patientsNASkordis N et al., 2005Skordis N, Patsalis PC, Bacopoulou I, Sismani C, Sultan C, Lumbroso S, . 5alpha-reductase 2 gene mutations in three unrelated patients of Greek Cypriot origin: identification of an ancestral founder effect.. J. Pediatr. Endocrinol. Metab.. 2005; 18(3):241-6
CyprusNANA5 patients/ 5 patients (carrier frequency was estimated to be 0.98% or 2 in 204)NASkordis N et al., 2010Skordis N, Neocleous V, Kyriakou A, Efstathiou E, Sertedaki A, Philibert P, Phylactou LA, Lumbroso S, Sultan C, . The IVS1-2A>G mutation in the SRD5A2 gene predominates in Cypriot patients with 5α reductase deficiency.. J. Endocrinol. Invest.. 2010; 33(11):810-4

SRD5A2 || c.100G>A

Gene/Locus:    SRD5A2
Dna Change:    c.100G>A
Protein Change:    p.Gly34Arg
Mutation Type:    Substitution
Mutation Effect:    Missense
Location:    exon 1
Transcript:    NM_000348.3

PopulationEthnic GroupRegionMutation FrquencyCoalescence TimeReference
EgyptNANA5 Patients/8 unrelated patientsNAMazen I et al., 2003Mazen I, Gad YZ, Hafez M, Sultan C, Lumbroso S, . Molecular analysis of 5alpha-reductase type 2 gene in eight unrelated egyptian children with suspected 5alpha-reductase deficiency: prevalence of the G34R mutation.. Clin. Endocrinol. (Oxf). 2003; 58(5):627-31
EgyptNANANANAGad YZ et al., 2007Gad YZ, Khairt R, Mazen I, Osman HG, . Detection of the G34R mutation in the 5 alpha reductase 2 gene by allele specific PCR and its linkage to the 89L allele among Egyptian cases.. Sex Dev. 2007; 1(5):293-6

COL4A3 || c.2611G>T

Gene/Locus:    COL4A3
Dna Change:    c.2611G>T
Protein Change:    p.Gly871Cys
Mutation Type:    Substitution
Mutation Effect:    Missense
Location:    exon 32
Transcript:    NM_000091.4

PopulationEthnic GroupRegionMutation FrquencyCoalescence TimeReference
AlbaniaNANorthern (province of Bergam)43 unrelated familiesfrom 3100 to 3350 years agoCaleca L et al., 2014Caleca L, Putignano AL, Colombo M, Congregati C, Sarkar M, Magliery TJ, Ripamonti CB, Foglia C, Peissel B, Zaffaroni D, Manoukian S, Tondini C, Barile M, Pensotti V, Bernard L, Papi L, Radice P, . Characterization of an Italian founder mutation in the RING-finger domain of BRCA1.. PLoS ONE. 2014; 9(2):e86924

References

Caleca L, Putignano AL, Colombo M, Congregati C, Sarkar M, Magliery TJ, Ripamonti CB, Foglia C, Peissel B, Zaffaroni D, Manoukian S, Tondini C, Barile M, Pensotti V, Bernard L, Papi L, Radice P, Characterization of an Italian founder mutation in the RING-finger domain of BRCA1.PLoS ONE. 2014; 9(2):e86924

Gad YZ, Khairt R, Mazen I, Osman HG, Detection of the G34R mutation in the 5 alpha reductase 2 gene by allele specific PCR and its linkage to the 89L allele among Egyptian cases.Sex Dev. 2007; 1(5):293-6

Mazen I, Gad YZ, Hafez M, Sultan C, Lumbroso S, Molecular analysis of 5alpha-reductase type 2 gene in eight unrelated egyptian children with suspected 5alpha-reductase deficiency: prevalence of the G34R mutation.Clin. Endocrinol. (Oxf). 2003; 58(5):627-31

Skordis N, Neocleous V, Kyriakou A, Efstathiou E, Sertedaki A, Philibert P, Phylactou LA, Lumbroso S, Sultan C, The IVS1-2A>G mutation in the SRD5A2 gene predominates in Cypriot patients with 5α reductase deficiency.J. Endocrinol. Invest.. 2010; 33(11):810-4

Skordis N, Patsalis PC, Bacopoulou I, Sismani C, Sultan C, Lumbroso S, 5alpha-reductase 2 gene mutations in three unrelated patients of Greek Cypriot origin: identification of an ancestral founder effect.J. Pediatr. Endocrinol. Metab.. 2005; 18(3):241-6