[Effect of danazol treatment on growth in pediatric patients with hereditary angioedema due to C1-inhibitor deficiency]

Attenuated androgens are used for the prevention of angioedema attacks of hereditary angioedema with C1-inhibitor deficiency. After prepuberty, their use can lead to growth retardation.We assessed the effect of danazol on the growth of pediatric patients with hereditary angioedema.In the retrospective study on 42 patients diagnosed with hereditary angioedema, we calculated the deviation from the mid-parental target height, and analyzed it against the gender, the dose and duration of danazol treatment administered before the age of 21 years and before the age of 16 years.Regarding the deviation from the mid-parental target height, we did not find any significant difference between patients taking vs. not taking danazol, males vs. females taking danazol. The dose and the duration of danazol treatment did not influence that value neither before 21, nor before 16 years of age.Our findings suggest that treatment with the lowest effective doses of danazol does not influence growth. Orv Hetil. 2017; 158(32): 1269-1276.