CRN04894

A phase 2/3 study to evaluate the safety, efficacy, and pharmacokinetics of atumelnant treatment in pediatric participants with congenital adrenal hyperplasia including a long-term extension

13/07/2026 to 16/06/2031

Brief Summary
The purpose of this study is to evaluate the safety, efficacy, pharmacokinetics (PK), and pharmacodynamics (PD) of atumelnant treatment in pediatric participants with classic congenital adrenal hyperplasia (CAH).
Detailed Description
This Phase 2/3 plus open-label extension study is designed to evaluate the safety, efficacy, pharmacokinetics (PK), and pharmacodynamics (PD) of atumelnant treatment in pediatric participants with classic CAH. Part A is a Phase 2, open-label, semi-sequential cohorts portion of the study. Part B is the Phase 3, double-blind, randomized, placebo controlled confirmatory portion of the study. Part C is the open-label extension (OLE) portion of the study. Participants in Part A and B are eligible to enroll in Part C (OLE).

A total of approximately 153 participants may be enrolled in the study (planned and optional cohorts) ages 1 to < 18 years old.

The first 3 cohorts in Part A are for ages 12 to <18 years and will be semi-sequential, and Safety Review Committee (SRC) review of data and approval to proceed is required prior to enrolling each subsequent cohort. The fourth cohort in Part A is for ages 1 to 11 years old and will begin after Cohorts 1 and 2 have been completed, additional requirements are fulfilled, and following SRC review of Cohorts 1 and 2 data.