Abstract
IntroductionSurgeries are implicated in the development of anti-factor VIII (FVIII) neutralizing antibodies (inhibitors) in hemophilia A individuals with immune tolerance induction (ITI) treatment being the recommended therapy to eradicate these inhibitors. We evaluated the association of surgical procedures performed during ITI and treatment outcome. MethodsPatients were treated according to the Brazilian ITI Protocol with outcomes being defined as successful (i.e., recovered responsiveness to exogenous FVIII) and failed (i.e., unresponsiveness to exogenous FVIII thus requiring bypassing agents for bleeding control). Surgical procedures during induction therapy were managed following international recommendations. ResultsTreatment success rate was 68.7 % in 163 patients; 33 (20.2 %) were submitted to 43 (96 %) minor and two major surgeries. Personal, hemophilia, inhibitor, and treatment characteristics were similar between patients submitted to surgical procedures or not while on ITI; the success rates were 72.7 % and 67.7 % (p-value = 0.577), respectively. ConclusionNo association was found between having a minor surgical procedure and ITI treatment outcome.
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