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To find out the effects of Maralixibat on the treatment of PFIC.

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.

This study is a randomized, double-blind, active-controlled, titrated, parallel arm, multicenter study. It will compare the efficacy, safety and tolerability of twice daily Chronocort with twice daily IRHC (Cortef®) over a randomized treatment period of up to 52 weeks in participants aged 16 years and over with known classic CAH due to 21-hydroxylase deficiency. The primary efficacy assessment of biochemical responder rate and the key secondary assessments of dose responder rate and mean total daily dose will be assessed after 52 weeks of randomized treatment.

This is a Phase 3, randomized, double-blind, placebo-controlled study to evaluate the efficacy, safety, and tolerability of crinecerfont versus placebo administered twice daily (bid) with breakfast and evening meals for28 weeks in approximately 81 pediatric subjects with classic congenital adrenal hyperplasia (CAH) due to21-hydroxylase deficiency. Eligible subjects will be randomly assigned in a 2:1 ratio (active:placebo) to either crinecerfont (25 mg bid via oral solution for subjects 10 to <20 kg, 50 mg bid via oral solution for subjects 20 to <55 kg, or 100 mg bid via oral capsules for subjects ≥55 kg) or matching placebo (oral solution placebo for subjects <55 kg and oral capsule placebo for subjects ≥55 kg). Dose assignment from Day 1 to Week 28 will be based on the subject’s weight at Day 1. After the 28-week placebo-controlled treatment period, there will be a 24-week, open-label treatment period, during which all subjects will receive crinecerfont at doses based on their Week 28 body weight.

This research is being done to test the safety and effectiveness of intranasal carbetocin to treat Prader Willi Syndrome.

This is a Phase 3, randomized, double-blind, placebo-controlled study to evaluate the efficacy, safety, and tolerability of NBI-74788 versus placebo administered bid with breakfast and the evening meal (doses separated by approximately 12 hours) for 24 weeks in approximately 165 adult subjects with classic CAH due to 21-hydroxylase deficiency.

This is a randomized, double-blind, placebo-controlled study that will evaluate the potential of tildacerfont to reduce GC burden in adult subjects with classic CAH who have LLD ≤ A4 ≤ 2.5x ULN and are on supraphysiologic doses of GC therapy (≥30 mg/day and ≤60 mg/day HCe). This will be the first study of tildacerfont to evaluate GC dose reduction. In addition, this study will characterize clinical outcomes after up to 76 weeks of treatment with tildacerfont. An optional Open-Label Extension Period will provide an open-label treatment with tildacerfont at 200 mg QD for up to 240 weeks.