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Vosoritide for Selected Genetic Causes of Short Stature

Plain-language guide to NCT04219007: phase 2 interventional trial of Vosoritide, 56 participants. Who took part, design and what was measured.

Key Facts

Registry ID
NCT04219007
Phase
phase 2
Status
active, not recruiting
Start
2020-08-04
Completion (planned or actual)
2025-08-14
Participants
56 (actual)
Design
na, open label (everyone knows who gets what), treatment
Conditions studied
Short Stature
Results posted
not yet

What This Study Did, in Plain Language

What Was Tested

This registered phase 2 trial tested Vosoritide.

Short stature can be caused by a number of genetic etiologies, many of which directly affect the growth plate.

The FGFR3/CNP pathway is central to growth of the chondrocyte.

It had 1 arm (groups): Genetic Short Stature (experimental).

The registry classes the interventions as drug.

Who Took Part

56 actual participants took part.

It was open to people of any sex aged from 3 years up to 10 years.

Healthy volunteers were not accepted; participants needed the condition being studied.

The full record lists 11 inclusion and 9 exclusion criteria; among the exclusions: prior treatment with a gnrh analog, aromatase inhibitor or oxandrolone; history of any type of malignancy; chronic medical condition known to affect growth including but not limited to:.

How the Study Was Run

The set-up was single-group and open-label.

Being open-label, the Vosoritide study did not mask who received what.

Everyone received the same intervention, so there was no separate comparison group inside the trial.

It started in 2020-08-04 with completion listed for 2025-08-14.

It ran at 1 site in United States.

Its stated primary purpose is treatment.

What Was Measured

Researchers chose this as the main measure: Incidence of Treatment Emergent Adverse Events [Safety and Tolerability] (time frame: 12 months). Incidence of Symptomatic Hypotension events [Safety and Tolerability] (time frame: 12 months). Change from Baseline in annualized growth velocity (time frame: 12 months).

It also tracked 3 secondary outcomes, for example Changes in the seated height ratio as a measure of body proportions, Changes in the difference between arm span and height from baseline and Changes from Baseline in bone age/chronological age.

What This Means in Plain Language

Put simply, this is a phase 2 trial of Vosoritide in 56 people.

Its status is active not recruiting; no results are posted to the registry yet, so nothing here describes outcomes.

More context: the Vosoritide compound page, all human trials.

Our Notes on the Compound

Vosoritide: A 39-amino-acid analog of C-type natriuretic peptide (Voxzogo) studied in achondroplasia.

Related Pages

Source: ClinicalTrials.gov record. This explanation is written by PeptideWhiz from the public record. For research and education only. Not medical advice; no dosing information is given.