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Frequency of Intron 22 Inversion in Severe Hemophilia A Patients
Javeria Ashfaq1, Rehana Ahmed2, Faryal Tariq1
1Clinical Hematology, National Institute of Blood Diseases and Bone Marrow Transplantation, Karachi, PAK.
Cureus
|September 26, 2022
Summary
Intron 22 inversion (Inv22) is a major cause of severe hemophilia A (HA) in 45.1% of patients. However, this study found no significant association between Inv22 and FVIII inhibitor formation in severe HA patients.
Area of Science:
- Genetics and Molecular Biology
- Hematology
- Medical Research
Background:
- Severe hemophilia A (HA) is a significant bleeding disorder.
- Intron 22 inversion (Inv22) is a known genetic cause of severe HA.
- The relationship between Inv22 and FVIII inhibitor development requires further investigation.
Purpose of the Study:
- To determine the frequency of Intron 22 inversion (Inv22) in severe hemophilia A patients.
- To evaluate the association between Inv22 and the formation of FVIII inhibitors.
Main Methods:
- Descriptive statistics were used to analyze patient data.
- Chi-square test was applied to assess the association between Inv22 and F8 inhibitor formation.
- Data from 62 severe HA patients were analyzed.
Main Results:
- The frequency of Inv22 in the studied severe HA patient cohort was 45.2%.
- Inhibitor status was positive in 4.83% of the patients.
- An insignificant association (p-value=0.443) was observed between Inv22 and inhibitor formation.
Conclusions:
- Intron 22 inversion is a prevalent genetic cause of severe hemophilia A in this patient population.
- No significant association was found between Inv22 and FVIII inhibitor development in severe HA patients.
- Further research may be needed to explore other factors influencing inhibitor formation in HA.
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