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Published on: March 30, 2014
Prophylactic treatment effects on inhibitor risk: experience in one centre
M Morado1, A Villar, V Jiménez Yuste
1Congenital Coagulopathy Section, Haematology Service, Universitary Hospital 'La Paz', Madrid, Spain. martamorado@hotmail.com
Insights
Prophylactic treatment for children with haemophilia significantly reduces inhibitor development. On-demand treatment, however, correlates with a higher incidence of inhibitors, regardless of genetic factors or clotting factor type.
Area of Science:
- Pediatric Hematology
- Immunology
Background:
- Prophylaxis is the standard elective treatment for children with haemophilia.
- Current consensus suggests prophylaxis does not increase inhibitor risk.
Purpose of the Study:
- To analyze inhibitor incidence in haemophiliac children.
- To investigate the relationship between inhibitor development and mutations, clotting factor type, and treatment modality.
Main Methods:
- Retrospective analysis of 50 haemophiliac children.
- Correlation analysis of inhibitor incidence with genetic mutations, clotting factor products, and treatment regimens (prophylaxis vs. on-demand).
Main Results:
- A significant correlation was found between on-demand treatment and increased inhibitor incidence.
- This correlation was independent of specific gene mutations or the type of clotting factor used.
Conclusions:
- Early initiation of prophylactic treatment is recommended for all children with haemophilia.
- Prophylaxis is negatively associated with inhibitor development, particularly in children with high-risk mutations.
Abstract:
Nowadays, the elective treatment for children with haemophilia is prophylaxis. There is a common consensus that this modality of therapeutic approach is not associated with a higher risk of inhibitor development. We analysed the inhibitor incidence in 50 haemophiliac children and its relationship with mutations, type of clotting factor used and treatment modality. There was a significant correlation between receiving on-demand treatment and an increased incidence of inhibitors, independently of mutations or factor used. We advise putting haemophiliac children under prophylactic treatment as soon as possible, especially if they have mutations associated with high risk of inhibitor development, as prophylaxis is negatively associated with the development of inhibitors.
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