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The purpose of this study is to (1) determine the minimum effective dose of abiraterone acetate that normalizes androstenedione levels in prepubertal children with CAH secondary to 21-hydroxylase deficiency (Phase 1 trial), and (2) assess the utility of abiraterone acetate in prepubertal children with CAH as adjunctive therapy to minimize excessive androgen secretion and allow more physiological glucocorticoid replacement (Phase 2 trial).

This is a Phase 1/2, first-in-human, open-label, dose-escalation study designed to evaluate the safety, tolerability, and efficacy of BBP-631 administered to up to 25 adult participants diagnosed with classic congenital adrenal hyperplasia (CAH) (simple virilizing or salt-wasting, Group 1) or with classic salt-wasting CAH (Group 2) due to 21-hydroxylase deficiency (21-OHD) and who are monitored for 24 weeks post-treatment. All participants who receive BBP-631 will be followed for an additional 4.5 years for safety and efficacy in a separate long term follow up protocol (Study CAH-399). In total, all participants will be followed for at least 5 years after the date of treatment with BBP-631.

The first Phase IIb clinical trial in Down syndrome regression disorder (DSRD). An open-label, randomized study comparing the safety and efficacy of lorazepam, intravenous immunoglobulin (IVIg) and the Janus Kinase inhibitor (JAK inhibitor), tofacitinib.

This study examines the relationship between social and nonsocial reward responsiveness and depression symptoms in adolescents (14-17 years old) with confirmed or suspected autism. Over time, we hope to understand mental health outcomes in teens (ages 14-17) with confirmed or suspected autism.

Over a 6-month period, adolescents and their parents will participate in clinical interviews, EEG tasks, and surveys about depression, mental health, and friendships, among other topics. Over time, we hope to understand depression and mental health outcomes in autistic adolescents with intellectual disability (14-17 years old) and their parents.