πŸ›οΈ Verified NIH Record β€’ Updated 2026-08-20

Study to Evaluate the Efficacy and Safety of BMN 333 Versus Vosoritide in Children With Achondroplasia (NCT07441876)

A Multicenter, Randomized, Operationally Seamless Phase 2/3 Study to Evaluate the Efficacy and Safety of BMN 333 Versus Vosoritide in Children With Achondroplasia

🟒 Recruiting Phase2 / Phase3 πŸ’Š Investigational Drug / Biologic Sponsor: BioMarin Pharmaceutical

🩺 Plain-English Summary (8th-Grade Level)

This is a multicenter, multinational, randomized, active-controlled, operationally seamless Phase 2/3 study of BMN 333 in treatment-naΓ―ve pediatric participants with achondroplasia (ACH). The study consists of a Phase 2 part and a Phase 3 part.

Who can join: Review the eligibility criteria below.

Location: UCSF Benioff Children's Hospital Oakland β€” Oakland, California

Age range: 2 Years to 17 Years

πŸ§ͺ Interventions in This Study

πŸ“‹ "Do I Qualify?" β€” 1-Minute Self Screener

Instant Checklist

Full eligibility criteria are available on the official NIH protocol. View the criteria β†—

πŸ“ All Participating Trial Locations (25 Sites)

  • UCSF Benioff Children's Hospital Oakland β€” Oakland, California
  • Nemours Children's Health β€” Wilmington, Delaware
  • Ann & Robert H. Lurie Children's Hospital of Chicago β€” Chicago, Illinois
  • Johns Hopkins Medicine β€” Baltimore, Maryland
  • Cincinnati Children's Hospital Medical Center β€” Cincinnati, Ohio
  • Children's Hospital of Philadelphia β€” Philadelphia, Pennsylvania
  • University of Texas Southwestern Medical Center β€” Dallas, Texas
  • Texas Children Hospital, Baylor College of Medicine β€” Houston, Texas
  • Consano Clinical Research, LLC β€” San Antonio, Texas
  • Murdoch Children's Research Institute β€” Parkville, Victoria
  • Universite de Montreal - Centre Hospitalier Universitaire Sainte-Justine β€” Montreal, Quebec
  • Irccs Ospedale Gaslini Di Genova β€” Genova,
  • Hokkaido University Hospital β€” Hokkaido,
  • Osaka City General Hospital β€” Osaka,
  • National Center for Child Health and Development β€” Tokyo,
  • Uniwersytecki Szpital Kliniczny im. J. Mikulicza-Radeckiego we Wroclawiu Klinika Pediatrii i Chorob Infekcyjnych β€” Wroclaw,
  • Institutul National de Endocrinologie C.I.Parhon β€” Bucharest,
  • Craiova Emergency Clinical County β€” Craiova,
  • Seoul National University Hospital β€” Seoul,
  • Pusan National University Yangsan Hospital β€” Yangsan,
  • University Hospitals Bristol NHS Foundation Trust - Bristol Royal Hospital for Children β€” Bristol,
  • Queen Elizabeth University Hospital β€” Glasgow,
  • Alder Hey Childrens NHS Foundation Trust β€” Liverpool,
  • Great Ormond Street Hospital β€” London,
  • University NHS Foundation Trust NIHR Wellcome Trust Clinical Research Facility β€” Manchester,

πŸ“ž Contact the Study Coordinator

Phone: (800) 983-4587

Email: medinfo@bmrn.com

Coordinator details come directly from the registered NIH protocol. Confirm the study is still recruiting before traveling.

πŸ’° Cost, Insurance & Patient Rights

  • 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
  • Routine Patient Care: Under federal law (ACA Β§ 2709) and many state statutes, routine care costs are covered during participation.
  • Voluntary Participation: You may withdraw at any time without affecting your standard medical care.

Explore by condition: All Achondroplasia clinical trials

πŸ’‘ How to Participate

  1. Check the checklist above to see if you may qualify.
  2. Contact the study coordinator using the phone/email above.
  3. Ask about the visit schedule, what is covered at no cost, and any travel support.
  4. Confirm with your own doctor before making a decision.
πŸ›οΈ View Official NIH Record β†—