Inclusion Criteria:  Male and female subjects aged 6 to 17 years Diagnosis of CAH due to 21-OHD and/or elevated 17-OHP requiring ongoing GC replacement since diagnosis Stable dose of GC replacement for at least 1 month prior to screening  Exclusion Criteria:  CAH not due to 21-OHD History of bilateral adrenalectomy or hypopituitarism Current treatment with dexamethasone Clinically significant unstable medical conditions, illness, or chronic diseases History of active bleeding disorders Females who are pregnant or nursing