Long-Term Extension Study of Vosoritide to Treat Children With Hypochondroplasia

NCT ID: NCT07073014

Last Updated: 2025-07-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ENROLLING_BY_INVITATION

Clinical Phase

PHASE3

Total Enrollment

140 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-06-20

Study Completion Date

2040-12-31

Brief Summary

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The purpose of this study is to evaluate the long-term safety and efficacy of daily doses of vosoritide in participants with HCH

Detailed Description

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Conditions

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Hypochondroplasia

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Vosoritide

Open-label active drug

Group Type EXPERIMENTAL

Vosoritide

Intervention Type DRUG

Open-label administration of vosoritide using weight-band dosing

Interventions

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Vosoritide

Open-label administration of vosoritide using weight-band dosing

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Participants must have completed the Week 52 visit for 111-303 or 111-212 and have open epiphyses as assessed by left hand antero-posterior (AP) X-rays
* Parent(s) or guardian(s) must be willing and able to provide written, signed informed consent after the nature of the study has been explained and prior to performance of any study-related procedure
* Females ≥ 10 years old or who have begun menses must have a negative pregnancy test at the Baseline visit and be willing to have additional pregnancy tests during the study
* If sexually active, participants must be willing to use a highly effective method of contraception while participating in the study
* Participants are willing and able to perform all study procedures as physically possible
* Parent(s) or caregiver(s) are willing to administer daily injections to the participants and willing to complete the required training

Exclusion Criteria

* Permanently discontinued study treatment in the studies 111-303 or 111-212
* Evidence of decreased growth velocity (AGV \< 1.5 cm/year) as assessed over a period of at least 6 months and growth plate closure assessed as per standard of care
* Taking or planning to take any prohibited medications
* Planned or expected to have limb-lengthening surgery during the study period
* Planned or expected bone-related surgery during the study period
* Require any investigational agent prior to completion of study period
* Have current malignancy, history of malignancy, or currently under work-up for suspected malignancy
* Have known hypersensitivity to vosoritide or its excipients
* Is pregnant or breastfeeding at Baseline or planning to become pregnant (self or partner) at any time during the study
* Concurrent disease or condition that, in the view of the investigator, would interfere with study participation or safety evaluations, for any reason
Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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BioMarin Pharmaceutical

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Nemours Children's Hospital, Delaware (Alfred I. Dupont Hospital for Children)

Wilmington, Delaware, United States

Site Status

Children's National Medical Center

Washington D.C., District of Columbia, United States

Site Status

Ann & Robert H. Lurie Children's Hospital of Chicago

Chicago, Illinois, United States

Site Status

Medical College of Wisconsin

Milwaukee, Wisconsin, United States

Site Status

Murdoch Children's Research Institute

Parkville, Victoria, Australia

Site Status

University of Alberta Stollery Children's Hospital

Edmonton, Alberta, Canada

Site Status

SickKids - The Hospital for Sick Children

Toronto, Ontario, Canada

Site Status

Centre Hospitalier Universitaire Sainte-Justine

Montreal, Quebec, Canada

Site Status

Hospices Civils de Lyon - Hopital Femme Mere Enfant

Lyon, , France

Site Status

Hopital de la Timone

Marseille, , France

Site Status

Hopital Necker-Enfants Malade

Paris, , France

Site Status

CHU de Toulouse

Toulouse, , France

Site Status

Uniklinik Koln

Cologne, , Germany

Site Status

Univeristatskinderklinik Magdeburg

Magdeburg, , Germany

Site Status

Instituto Giannina Gaslini

Genoa, , Italy

Site Status

Fondazione Policlinico Universitario Agostino Gemelli IRCCS

Rome, , Italy

Site Status

Ospedale Pediatrico Bambino Gesu

Rome, , Italy

Site Status

Osaka University Hosptial

Osaka, , Japan

Site Status

Tokushima University Hospital

Tokushima, , Japan

Site Status

Institute of Science Tokyo Hospital

Tokyo, , Japan

Site Status

Tottori University Hospital

Tottori, , Japan

Site Status

Vithas Hospital San Jose

Vitoria-Gasteiz, , Spain

Site Status

Great Ormond Street Hospital for Children NHS Foundation Trust

London, , United Kingdom

Site Status

Countries

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United States Australia Canada France Germany Italy Japan Spain United Kingdom

Other Identifiers

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111-308

Identifier Type: -

Identifier Source: org_study_id

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