Although rare bleeding disorders (RBDs) are not common diseases, they are important for life-threatening bleedings and prophylaxis approaches, especially in severe forms. In this retrospective study, the authors have analyzed data from children with severe RBDs who were examined at the center over a period of 10 years to describe the distribution, clinical features, treatment patterns, and outcome of severe RBDs in patients. Data from all children (age under 18 y) with RBDs who were examined in the center between 2005 and 2015 were retrospectively reviewed. In total, 12 patients were included in the study. Four of the cases had factor (F) VII (33.3%), 6 had FX (50%), 1 had FXIII (8.3%), and 1 had fibrinogen deficiency (8.3%). Of the 12 children with severe RBDs, 8 (67%) experienced at least 1 major bleeding. Prophylaxis was applied to 10 patients. In conclusion, RBDs are more common in our country because of the high parental consanguinity rates. So, it is necessary to raise public awareness about the risks of consanguineous marriages and increase access to genetic counseling and testing facilities. Delayed diagnosis and lack of adequate prophylactic replacement therapy are the most important risk factors that increase life-threatening bleeding.
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