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BMN 111

Phase 3

Achondroplasia | Small molecule | Rare Disease |BioMarin Pharmaceutical Inc.|Last Updated: Mar 13, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials6
Total Enrollment454

FDA Designations

No designations recorded

Clinical trial landscape

BMN 111 · 6 trials · 1 indication

Phase 3 2Phase 2 3Phase 1 1
NCT03424018An Extension Study to Evaluate the Efficacy and Safety of BMN 111 in Children With AchondroplasiaAchondroplasia
ACTIVE NOT_RECRUITING119 Analytics
NCT03197766A Study to Evaluate the Efficacy and Safety of BMN 111 in Children With AchondroplasiaAchondroplasia
COMPLETED121 Analytics
PHASE3ACTIVE NOT_RECRUITING
An Extension Study to Evaluate the Efficacy and Safety of BMN 111 in Children With Achondroplasia
AchondroplasiaUnlock trial analytics
PHASE3COMPLETED
A Study to Evaluate the Efficacy and Safety of BMN 111 in Children With Achondroplasia
AchondroplasiaUnlock trial analytics

Study Endpoints

Primary Endpoints

Change from baselines in mean annualized growth velocity
Through study completion, an average of 1 year

Long term efficacy as measured by change in annualized growth velocity

Change From Baseline in Annualized Growth Velocity (AGV) at Week 52
At Baseline and Week 52

AGV at a Post-baseline Visit is defined as \[(Height at Post-baseline Visit - Height at Baseline)/(Date of Post-baseline Visit - Date of Baseline Assessment)\] x 365.25 AGV at Baseline is defined as \[(Height at Baseline - last height measurement in Study 111-901 at least 6 months prior to Baseline)/(Date of Baseline Assessment - Date of last height measurement in Study 111-901 at least 6 months prior to Baseline)\] x 365.25

Number of Participants With Adverse Events (AEs) by Severity Grade and Study Drug Treatment-emergent Adverse Events (TEAEs)
Up to Week 56 (Safety Follow-Up +/-7d)

A treatment-emergent Adverse Events (TEAE) is any Adverse Events that newly appeared, increased in frequency or worsened in severity following initiation of study drug administration. A severity grade was defined by the Common Terminology Criteria for Adverse Events (CTCAE) Version 4.03. As per CTCAE, Grade 1 scales as Mild; Grade 2 scales as Moderate; Grade 3 scales as severe or medically significant but not immediately life threatening; Grade 4 scales as life-threatening consequences; and Grade 5 scales as death related to AE. Safety Population includes all sentinel and randomized participants in the FAS who received at least one dose of vosoritide or placebo in this study. Serious adverse event (SAE)

Change From Baseline in Height Z-score at Week 52.
Baseline to Week 52

Z-Scores were derived using age-sex specific reference data (means and SDS) for average stature children per the Centers for Disease Control and Prevention. A height Z score of 0 would indicate that the subject's height is equal to the mean height for the average stature population of the same sex and age. A positive height Z score indicates that the subjects height is above the mean height for the average stature population of the same sex and age, whilst a negative height Z score indicates that the subjects height is below the mean height for the average stature population of the same sex and age. To conclude if the height Z score increases then this means the height deficit has decreased. standard deviation score (SDS). The primary efficacy analysis population was the subset of randomized participants in the FAS.

Incidence of Treatment-Emergent Adverse Events [Safety and Tolerability]
Until near final adult height is reached, and up to at least 16 years of age for females and 18 years of age for males, whichever occurs later

* Number of study participants with treatment-emergent adverse events. * Number of study participants with treatment-emergent serious adverse events

Overall Summary of Adverse Events During Initial 6-Month Period
Up to Month 6 ± 7 Days

A treatment-emergent Adverse Events (TEAE) is any Adverse Events that newly appeared, increased in frequency or worsened in severity following initiation of study drug administration. Serious adverse event (SAE).

Overall Summary of Adverse Events During Entire Study Period
Up to Month 25 ± 7 Days

A treatment-emergent Adverse Events (TEAE) is any Adverse Events that newly appeared, increased in frequency or worsened in severity following initiation of study drug administration. TEAE - Treatment-emergent adverse event. SAE - Serious adverse event.

Safety based on vitals signs
Daily throughout the study Assessed for approximately 8 days following each single dose in Part 1, and for approximately 24 days following each daily dose in Part 2
Safety based on adverse events
Daily throughout the study Assessed for approximately 8 days following each single dose in Part 1, and for approximately 24 days following each daily dose in Part 2

Secondary Endpoints

Changes in health-related quality of life as measured by the Quality of Life in Short-Statured Youth questionnaire
Through study completion, every 6-12 months
Potential changes in daily activity performance as measured by Activities of Daily Living questionnaire
Through study completion, every 12 months
Characterize maximum concentration (Cmax) of BMN 111 in plasma
Through study completion, every 12 months
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
BMN 111EXPERIMENTAL -
Active BMN 111EXPERIMENTALDaily subcutaneous injection of 15 micrograms per kilogram BMN111
PlaceboPLACEBO_COMPARATORDaily subcutaneous injection of placebo
Active BMN111EXPERIMENTALSubcutaneous injection of 15 μg/kg/day and/or 30 μg/kg/day of BMN111 daily.
BMN 111 - Subcutaneous InjectionEXPERIMENTAL111-205 is an open-label, extension study. Subjects receive the same stable dose of BMN 111 received upon completion of the 111-202 study, initially up to 30 μg/kg. BMN 111 will be administered by weight-band dosing regimen.
Cohort 1EXPERIMENTALCohort 1: 2.5 ug/kg
Cohort 2EXPERIMENTALCohort 2: 7.5 ug/kg,
Cohort 3EXPERIMENTALCohort 3: 15 ug/Kg
Cohort 4EXPERIMENTALCohort 4: 30 ug/kg

Interventions

NameTypeDescription
BMN 111DRUGSubcutaneous injection of recommended dose of BMN 111 based on weight-band dosing once daily.
PlaceboDRUGSubcutaneous injection of 15 μg/kg of placebo daily
Normal SalineDRUGSC injection, Part 1 single dose and Part 2 multiple dose
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Eligibility Criteria

Age Range6 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites24

Inclusion Criteria: * Must have completed Study 111-301 * Female \>= 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, willing to use a highly effective method of c...

Countries:United StatesAustraliaGermanyJapanSpainTurkey (Türkiye)United KingdomFrance
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Frequently asked questions about BMN 111

What is BMN 111 used for?

BMN 111 is an investigational small molecule being developed for achondroplasia, a rare genetic disorder of bone growth. It is currently in Phase 3 clinical development and is not yet approved by regulatory authorities.

Who makes BMN 111?

BMN 111 is being developed by BioMarin Pharmaceutical Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol BMRN. The company is conducting clinical trials to evaluate the drug's safety and efficacy in achondroplasia.

What phase is BMN 111 in?

BMN 111 is currently in Phase 3 clinical development for achondroplasia. It is an investigational drug, meaning it has not been approved by regulatory agencies and is still undergoing clinical trials to assess its safety and effectiveness.

What clinical trials is BMN 111 in?

BMN 111 has been studied in multiple clinical trials, including NCT01590446 (Phase 1, completed), NCT02724228 (Phase 2, active), NCT03424018 (Phase 3, active), and NCT03583697 (Phase 2, completed). These trials evaluate the drug in healthy volunteers and children with achondroplasia.

Is BMN 111 the same as vosoritide?

BMN 111 is also known as vosoritide, a C-type natriuretic peptide analog being developed for achondroplasia. The drug is designed to promote bone growth by targeting the underlying genetic cause of the condition.