Subcutaneous Hydrocortisone Children With Congenital Adrenal Hyperplasia

This is an open-label, non-randomized, single arm proof-of concept feasibility trial comparing standard oral hydrocortisone (HC) treatment with a six-week intervention of interval bolus delivery (pulsatile) of subcutaneous (SQ) HC via infusion pump in children with congenital adrenal hyperplasia (CAH). Eight children, ages 4-18 yrs, will have 24-hr pharmacokinetic and pharmacodynamic (PKPD) profiles of cortisol, 17- hydroxyprogesterone (17OHP) and androstenedione (A4) concentrations while on standard oral hydrocortisone therapy (admission 1, week 1); during a safety check using a subcutaneous hydrocortisone pump (admission 2, week 7); and after 6 weeks of SQHC pump treatment (admission 3, week 14). A pharmacokinetic and pharmacodynamic analysis will be used to compare cortisol, 17OHP and A4 exposures between standard oral HC therapy (week 1) with SQHC pump treatment (week 14). Funding Source - FDA OOPD