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Idiopathic Short StaturePhase 2NCT06382155

A Phase 2 Study of Vosoritide in Children With Idiopathic Short Stature

A Phase 2 study testing Vosoritide Injection and Human Growth Hormone in people with Idiopathic Short Stature, run by BioMarin Pharmaceutical at 47 sites in 6 countries.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

The purpose of this study is to evaluate i) the effect of multiple doses of vosoritide and ii) the effect of the therapeutic dose of vosoritide compared to human growth hormone (hGH)(hGH; only in the United States), in children with idiopathic short stature (ISS). Read more about this study

Who is it for?
Ages 3 to 11 years
Conditions the study is for
Idiopathic Short Stature
What is being tested?
Vosoritide Injection and Human Growth Hormone
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
100 participants
Where
47 sitesin 6 countries
Study dates
21 Oct 2024to Dec 2036
Phase
Phase 2
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 3 to 11 years
  • All sexes
  • No healthy volunteers
  • Child

Who may be able to join

  • Height assessment corresponding to a height Z-score of ≤ -2.25 SDs in reference to the general population of the same age and sex, as calculated using the Centers for Disease Control and Prevention (CDC) growth charts
  • If participant is ≥ 5 years at Screening,must be Tanner Stage I to be eligible for enrollment and randomization3. Historic stimulation test result with serum or plasma GH level greater than 10 μg/L or serum IGF-1 in the normal range for age (≥ -1.00 SDs and ≤+2.00 SDs).
  • Key Exclusions:
  • Known chromosomal imbalance or genetic variant causing short stature syndrome, including but not limited to Laron syndrome, Prader-Willi syndrome, Russell-Silver Syndrome, Turner syndrome, disproportionate skeletal dysplasias, abnormal SHOX gene analysis, or Rasopathy (including Noonan syndrome), ACAN deficiency.
  • Previous treatment with a growth promoting agent

Who cannot join

None listed.

Trial locations and contacts

47 sites in 6 countries. Contact the study team or a site near you to ask about taking part.

Trial Specialist contact

+1 415.475.5852

medinfo@bmrn.com

47 sites in 6 countries

United States35 sites, 31 recruiting
  • University of Michigan

    Ann Arbor, Michigan, 48109

    Dr Inas H. Thomas, 734-674-5175, inash@med.umich.edu

    Recruiting
  • St. Luke's Children's Endocrinology

    Boise, Idaho, 83712

    Withdrawn
  • UBMD Pediatrics

    Buffalo, New York, 14203

    Dr Teresa Quattrin, 716-323-0170, tquattrin@upa.chob.edu

    Recruiting
  • Consano Clinical Research, LLC

    California City, California, 78231

    Daniel Katselnik, 210-545-4900, katselnik.MD@ConsanoSA.com

    Recruiting
  • Rady Children's Hospital - San Diego

    California City, California, 92123

    Mary (Marybeth) Patterson, 858-966-4032, mpatterson2@rchsd.org

    Recruiting
  • Children's Hospital of Orange County Main Campus - Orange

    California City, California, 92868

    Amrit Bhangoo, +17145098634, abhangoo@choc.org

    Recruiting
  • University of North Carolina Children's Specialty Clinic

    Chapel Hill, North Carolina, 27514

    Nina Jain, 919-718-9512, nina_jain@med.unc.edu

    Recruiting
  • Cincinnati Children's Hospital Medical Center

    Cincinnati, Ohio, 45229

    Dr Gajanthan Muthuvel, (513) 636-8444, gajanthan.muthuvel@cchmc.org

    Recruiting
  • Prisma Health Children's Hospital - Midlands

    Columbia, South Carolina, 29203

    Dr Alison Lunsford, 803-434-7990, alison.lunsford@prismahealth.org

    Recruiting
  • Centricity Research

    Columbus, Georgia, 31904

    Steven Leichter Principal Investigator, 833-3235646, sleichter@centricityresearch.com

    Recruiting
  • University of Texas Southwestern Medical Center

    Dallas, Texas, 75390

    Dr Nadia Merchant, 214-456-5959, nadia.merchant@utsouthwestern.edu

    Recruiting
  • Cook Children's Endocrinology

    Fort Worth, Texas, 76104

    Withdrawn
  • NYU Langone Ambulatory Care Garden City

    Garden City, New York, 11530

    Withdrawn
  • Baylor College of Medicine

    Houston, Texas, 77030

    Dr Lin Yuezhen, yuezhenl@bcm.edu

    Recruiting
  • Rocky Mountain Clinical Research - Idaho Falls

    Idaho Falls, Idaho, 83404

    Dr Joshua Smith, 208-522-6005, jms-research@idahomed.com

    Recruiting
  • University of Iowa Stead Family Children's Hospital

    Iowa City, Iowa, 52242

    Dr Michael Tansey, (319) 356-4443, michael-tansey@uiowa.edu

    Recruiting
  • Nemours Children's Specialty Care Jacksonville

    Jacksonville, Florida, 32207

    Dr Larry Fox, larry.fox@nemours.org

    Recruiting
  • Velocity Clinical Research - MedPharmics - Lafayette

    Lafayette, Louisiana, 70508

    Dr Jibran Atwi, (337) 519-4742, jiatwi@velocityclinical.com

    Recruiting
  • Kentucky Children's Hospital

    Lexington, Kentucky, 40536

    Dr Yuri Zarate, 859-257-1000, yuri.zarate@uky.edu

    Recruiting
  • Children's Hospital Los Angeles

    Los Angeles, California, 90027

    Anna Ryabets-Lienhard, 323-361-6478, aryabets@chla.usc.edu

    Recruiting
  • University of Louisville School of Medicine

    Louisville, Kentucky, 40202

    Dr Catalina Cabrera Salcedo, catalina.salcedo@louisville.edu

    Recruiting
  • Nicklaus Children's Hospital

    Miami, Florida, 33155

    Dr Adriana Carrillo Iregui, adriana.carrillo@nicklaushealth.org

    Recruiting
  • University of Minnesota Masonic Children's Hospital

    Minneapolis, Minnesota, 55454

    Dr Bradley Miller, 612-626-2916, mille685@umn.edu

    Recruiting
  • Ochsner Health Center for Children - New Orleans

    New Orleans, Louisiana, 70121

    Withdrawn
  • Atlantic Health Children's Specialty Center at Morristown

    New York, New York, 07960

    Dr Lawrence Silverman, 973-971-4340, lawrence.silverman@atlantichealth.org

    Recruiting
  • The Clinical and Translational Science Institute

    New York, New York, 10016

    Dr Emily Breidbart, (212) 263-5290, emily.breidbart@nyulangone.org

    Recruiting
  • Icahn School of Medicine at Mount Sinai

    New York, New York, 10029

    Robert Rapaport, (212) 241-8523, robert.rapaport@mountsinai.org

    Recruiting
  • Children's Hospital Oakland Research Institute

    Oakland, California, 94609

    Dr Hannah Chesser, hannah.chesser@ucsf.edu

    Recruiting
  • Optimal Research Sites

    Orange City, Florida, 32763

    Dr Jaqueline Freyre-Cubano, 386-218-5911, jfreyre@optimalresearchsites.net

    Recruiting
  • Nemours Children's Health System - Corporate Headquarters

    Pensacola, Florida, 32514

    Dr Jean-Claude Desmangles, 850-505-4793, jean-claude.desmangles@nemours.ort

    Recruiting
  • Center Of Excellence in Diabetes and Endocrinology

    Sacramento, California, 95821

    Dr Gnanagurudasan Prakasam, 916-570-2756, Gnanagurudasan.Prakasam@sutterhealth.org

    Recruiting
  • Seattle Children's Hospital

    Seattle, Washington, 98105

    Dr Patricia Fechner, 206-884-8540, patricia.fechner@seattlechildrens.org

    Recruiting
  • Children's Hospital at Montefiore

    The Bronx, New York, 10467

    Dr Laurie Cohen, (718)920-4664, lacohen@montefiore.org

    Recruiting
  • Lundquist Institute for Biomedical Innovation (LA BioMed)

    Torrance, California, 90502

    Dr Lynda Polgreen, 3102221961, lpolgreen@lundquist.org

    Recruiting
  • The Children's National Research Institute

    Washington D.C., District of Columbia, 20012

    Dr Andrew Dauber, adauber@childrensnational.org

    Recruiting

Other trials in United States

France4 sites, 4 recruiting
  • Centre Hospitalier Universitaire d'Angers

    Angers, 49 933

    Regis Coutant, +33 2 41 355 655, recoutant@chu-angers.fr

    Recruiting
  • Hôpital Bicêtre

    Le Kremlin-Bicêtre, Île-de-France Region, 94270

    Agnes Linglart, +33 01 45 21 78 33, agnes.linglart@aphp.fr

    Recruiting
  • Hôpital de la Timone - Enfants

    Marseille, 13005

    Rachel Reynaud, +33 4 91 38 83 83, rachel.reynaud@ap-hm.fr

    Recruiting
  • CHU de Toulouse - Hôpital des Enfants

    Toulouse, 31059

    Thomas Edouard, +33 5 61 99 28 24, edouard.t@chu-toulouse.fr

    Recruiting

Other trials in France

Italy3 sites, 3 recruiting
  • Azienda Ospedaliero Universitaria - Ospedale Pediatrico Meyer

    Florence, Florence, 50139

    Stefano Stagi, 055-566-2585, stefano.stagi@unifi.it

    Recruiting
  • IRCCS Istituto Giannina Gaslini

    Genova, 16147

    Mohamad Maghnie, +39 01056362574, mohamadmaghnie@gaslini.org

    Recruiting
  • Ospedale Pediatrico Bambino Gesù

    Roma, Rome, 00165

    Annalisa Deodati, +39 06-685-92508, annalisa.deodati@opbg.net

    Recruiting

Other trials in Italy

South Korea3 sites, 3 recruiting
  • Inha University Hospital

    Incheon, 22332

    Ji-Eun Lee, +82-32-890-3617, anicca@inha.ac.kr

    Recruiting
  • Chungnam National University Sejong Hospital (CNUSH)

    Sejong, 30099

    Yoo-Mi Kim, +82-10-2329-1514, ym.kim@cnu.ac.kr

    Recruiting
  • Seoul National University Bundang Hospital

    Seongnam-si, Gyeonggi-do, 13620

    Jaehyun Kim, +82-31-787-7287, joyminer@gmail.com

    Recruiting

Other trials in South Korea

Australia1 site, 1 recruiting
  • Murdoch Children's Research Institute

    Parkville, Victoria, 3052

    Ravi Savarirayan, +61399366541, ravi.savarirayan@mcri.edu.au

    Recruiting

Other trials in Australia

Germany1 site, 1 recruiting
  • Universitätsklinikum des Saarlandes

    Homburg, Saarland, 66421

    Tilman Rohrer, +49 (0) 68-41-16-2-83-01, tilman.rohrer@uks.eu

    Recruiting

Other trials in Germany

About this study

Official title: A Phase 2, Randomized, Controlled, Multicenter Study of Vosoritide in Children With Idiopathic Short Stature

The purpose of this study is to evaluate i) the effect of multiple doses of vosoritide and ii) the effect of the therapeutic dose of vosoritide compared to human growth hormone (hGH)(hGH; only in the United States), in children with idiopathic short stature (ISS).

Read the detailed description

Following a minimum 6 month observational period in which baseline growth is assessed, participants in the vosoritide and placebo groups will complete a minimum of 6 months of randomized treatment (maximum of 6 months of placebo treatment), followed by open-label treatment with vosoritide until they reach near-final adult height, or at least 16 years of age for females or 18 years of age for males, whichever comes later. Participants randomized to the hGH group will receive open-label hGH for a minimum of 4 years.

A Treatment Completion visit will occur approximately 4 weeks after the last administration of investigational product. Participants who discontinue study treatment after ≥13 weeks of exposure may remain in the study and complete follow-up assessments per the protocol schedule (including annual and periodic assessments through End of Study). If a participant discontinues treatment and declines further participation, they will be asked to return for a final Treatment Completion and End of Study visit approximately 4 weeks after the last injection.

Safety monitoring includes regular clinical and imaging assessments, including hip and lower-extremity evaluations, monitoring for hypotension, fractures, and slipped capital femoral epiphysis, with oversight by an independent Data Monitoring Committee

An independent Data Monitoring Committee will periodically review safety data and may recommend treatment discontinuation based on predefined safety signals

Being tested
Vosoritide Injection, Human Growth Hormone, Placebo

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Vosoritide InjectionDrug

    Experimental Drug Lyophilized powder for reconstitution

  • Human Growth HormoneDrug

    Commercial product containing somatotropin

  • PlaceboDrug

    Lyophilized powder for reconstitution

Study groups in NCT06382155
Study groupRoleWhat they receive
Vosoritide Dose 1 - Low DoseExperimentalVosoritide Dose 1 daily injection
Receives: Drug: Vosoritide Injection
Vosoritide Dose 2 - Medium DoseExperimentalVosoritide Dose 2 daily injection
Receives: Drug: Vosoritide Injection
Vosoritide Dose 3 - High DoseExperimentalVosoritide Dose 3 daily injection
Receives: Drug: Vosoritide Injection
PlaceboPlacebo comparatorPlacebo daily injection
Receives: Drug: Placebo
Human Growth HormoneActive comparatorhGH daily injection (US only)
Receives: Drug: Human Growth Hormone

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change from baseline in Annualized Growth Velocity (AGV)

    Measured: At 6 months

  2. Change from baseline in height

    Measured: At 4 years

  3. Change from baseline in height Z-score

    Measured: At 4 years

Secondary outcomes (18)
  1. Incidence of treatment-emergent adverse events

    Measured: Until the end of the study, up to 15 years

  2. Change from baseline in Height Z-score (average stature reference)

    Measured: At 6 months

  3. Change from baseline in height

    Measured: Every 6 months through the end of study, up to 15 years

  4. Change from baseline in height Z score

    Measured: Every 6 months through the end of study, up to 15 years

  5. Change from baseline at prespecified timepoints in urine cyclic guanine monophosphate (cGMP)

    Measured: Every 6 months through the end of study, up to 15 years

  6. Change from baseline at pre-specified timepoints in serum collagen X marker (CXM)

    Measured: Every 6 months through the end of study, up to 15 years

  7. Change from baseline in bone age minus chronological age at pre-specified timepoints

    Measured: Every 6 months through the end of study, up to 15 years

  8. Change from baseline in whole body (less head) bone mineral density (BMD) Z-score

    Measured: Every 6 months through the end of study, up to 15 years

  9. Change from baseline in lumbar spine BMD Z-score

    Measured: Every 6 months through the end of study, up to 15 years

  10. Change from baseline in total body (less head) bone mineral content (BMC)

    Measured: Every 6 months through the end of study, up to 15 years

  11. Change from baseline in lumbar spine BMC

    Measured: Every 6 months through the end of study, up to 15 years

  12. Maximum concentration (Cmax) of vosoritide in plasma

    Measured: Every 6 months through the end of study, up to 15 years

  13. Area under the plasma vosoritide concentration time-curve from time 0 to infinity (AUC0-∞)

    Measured: Every 6 months through the end of study, up to 15 years

  14. Area under the plasma vosoritide concentration time-curve from time 0 to the last measurable concentration (AUC0-t)

    Measured: Every 6 months through the end of study, up to 15 years

  15. Elimination half-life of vosoritide (t½)

    Measured: Every 6 months through the end of study, up to 15 years

  16. Apparent clearance of vosoritide

    Measured: Every 6 months through the end of study, up to 15 years

  17. Apparent volume of distribution of vosoritide based upon the terminal phase (Vz/F)

    Measured: Every 6 months through the end of study, up to 15 years

  18. Time vosoritide is present at maximum concentration (Tmax)

    Measured: Every 6 months through the end of study, up to 15 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted24 Apr 2024
  2. Study start21 Oct 2024
  3. Primary completionJun 2026 (estimated)
  4. Study completionDec 2036 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
100 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06382155
Sponsor's protocol ID
111-210
Status last verified
May 2026
First submitted
19 Apr 2024
Last updated
22 May 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Undecided

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Vosoritide Injection and Human Growth Hormone in people with Idiopathic Short Stature, run by BioMarin Pharmaceutical at 47 sites in 6 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 0 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 22 May 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 47 sites in United States, France, Italy, South Korea, Australia and 1 more country. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Trial Specialist (+1 415.475.5852, medinfo@bmrn.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change from baseline in Annualized Growth Velocity (AGV) (time frame: At 6 months). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 22 May 2026.

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