Molecular genotyping of hemophilia A in Saudi Arabia: report of 2 novel mutations
| Autor: | Mahasen al Saleh, Mahmoud Abu Riash, Hala Aba Alkhail, Abdulrahaman Al Musa, Khalid Abu Amero, Tarek Owaidah, Hazzaa Al Zahrani, Ali Alodaib |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Adult
Male Adolescent Genotype Population DNA Mutational Analysis Mutation Missense Saudi Arabia medicine.disease_cause Hemophilia A Frameshift mutation Young Adult Isoantibodies hemic and lymphatic diseases Coagulopathy Medicine Missense mutation Humans education Frameshift Mutation Autoantibodies Sequence Deletion Genetics Mutation education.field_of_study business.industry Point mutation Hematology General Medicine medicine.disease Phenotype Introns Arabs Mutagenesis Insertional Codon Nonsense Factor XII business |
| Zdroj: | Blood coagulationfibrinolysis : an international journal in haemostasis and thrombosis. 20(6) |
| ISSN: | 1473-5733 |
| Popis: | Different types of mutations have been reported in patients with hemophilia A. Although about half of all severe factor VIII deficiencies are caused by gene rearrangements (inversions) involving intron 22 in F8, other mutations such as point mutation, large deletions and insertions had been reported. We report the result of the first molecular testing for or F8 mutations from Saudi Arabia. A cohort of 22 men with hemophilia A was studied for F8 mutations. All patients were tested for factor VIII coagulant activity and inhibitors. Peripheral blood samples were used for DNA extraction followed by PCR detection of intron 22 inversion and all samples tested negative were screened for other F8 mutations. The patient's age ranged between 4 and 37 years. All patients except two siblings had severe hemophilia A. Only two patients out of 22 developed inhibitors with no obvious relation to the genotype. F8 Intron 22 inversion was detected in 10 patients (50%) of severe cases. Additionally, five point mutations and one deletion/insertion involving different exons were detected. All identified mutations were associated with severe phenotype except for one, which was associated with mild phenotype of hemophilia. This is the first report of molecular genotype of hemophilia A in the Saudi population and one of the few for Arab population. We had confirmed the incidence of Inversion 22 in severe hemophilia. We are reporting two novel mutations in F8, which can be used for carrier detection and prenatal genetic diagnosis (PGD). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|