Treatment of Osteogenesis Imperfecta with Parathyroid hormone and Zoledronic acid TOPaZ is a randomised open-label clinical trial for people with osteogenesis imperfecta (OI). The study aims to investigate whether a two-year spell of treatment with a drug called teriparatide (TPTD) followed by treatment with another drug called Zoledronic acid (ZA) reduces the risk of broken bones occurring in people with OI. Chief Investigator: Prof. Stuart RalstonNumber and location of participating sites (by region/country): 25 UK, Republic of Ireland, France, Netherlands, DenmarkEudraCT number: 2016-003228-22ISRCTN number: 15313991 Funder: NIHR Efficacy and Mechanism Evaluation Programme Start and End date:Of grant award - November 2016 - April 2025Of recruitment - October 2022 Current Status: In close out Trial Website: The TOPaZ TrialEmail: topaz.trial@ed.ac.uk UK GDPR Privacy Statement: If you have participated in this study and would like to read how it complies with UK GDPR, please read this document. Document ECTU TOPAZ UK GDPR privacy statement (78.9 KB / PDF) Sponsor: ACCORD http://www.accord.ed.ac.uk/ Chief Investigator: Professor Stuart Ralston, Molecular Medicine Centre, Institute of Genetics and Cancer, Western General Hospital, Edinburgh, EH4 2XU ECTU Involvement: Trial Management / Statistics / Database and randomisation service provision(UKCRC) Image This article was published on 2024-09-24