BridgeMD
A Phase 3, Randomized, Double-Blind, Placebo-Controlled, Multicenter Study to Evaluate the Efficacy and Safety of Vosoritide in Children With Hypochondroplasia
EU CTIS ID: 2024-513129-22-00
What this study is testing
To evaluate the effect of vosoritide on annualized grow velocity (AGV) versus placebo
- Therapeutic confirmatory (Phase III)
A plain-language read of the study's public EU CTIS listing. The study team confirms the details.
Who can take part
You may be able to join if
- Participants must be ≥ 3 to < 18 years of age at enrollment.
- A confirmed genetic diagnosis of HCH, demonstrating evidence of a pathogenic FGFR3 variant associated with HCH, as confirmed by prior genetic testing in Study 111-902.
- At least a 6-month period of pre-treatment standing height assessments prior to randomization.
- A height Z score of ≤ − 2.0 SDS in reference to the general population of the same age and sex, as calculated using the Center for Disease Control and Prevention (CDC) growth charts (https://www.cdc.gov/growthcharts/zscore.htm).
- Males and females are eligible to participate in this clinical study.
- Females ≥ 10 years old or who have begun menses must have a negative pregnancy test at the Screening Visit and be willing to have additional pregnancy tests during the study.
You likely can't join if
- Short stature condition other than HCH (eg, ACH, trisomy 21, pseudo-achondroplasia).
- Have any of the following documented conditions: a. Hypothyroidism or hyperthyroidism, growth hormone deficiency, hypercortisolism or hypopituitarism, or other endocrine cause of short stature b. Insulin-requiring diabetes mellitus c. Autoimmune inflammatory disease (including but not limited to systemic lupus erythematosus, juvenile dermatomyositis and scleroderma) d. Other chronic diseases that per investigator determination may be causative of a participant’s short stature, including conditions causing malnutrition (including but not limited to inflammatory bowel disease, cystic fibrosis, celiac disease and eating disorders) e. Autonomic neuropathy
- Have any of the following documented conditions: a. Renal insufficiency defined as an estimated glomerular filtration rate (eGFR) of < 60 ml/min/ 1.73 m2 using the revised Schwartz Pediatric Bedside eGFR formula (Schwartz 2009). b. Chronic anemia (hemoglobin < 10 g/dl. Note: participants with hemoglobin below the indicated threshold may receive treatment for anemia and re-screen after 8 weeks. c. Recurrent symptomatic hypotension (defined as episodes of low blood pressure generally accompanied by symptoms ie, dizziness, fainting, postural tachycardia) or recurrent symptomatic orthostatic hypotension. d. History of clinically significant cardiac or vascular disease as judged by the Investigator, including but not limited to the following: i. Cardiac dysfunction ii. Hypertrophic cardiomyopathy iii. Pulmonary hypertension iv. Congenital heart disease v. Cerebrovascular disease vi. Aortic insufficiency or other clinically significant valvular dysfunction vii. Clinically significant atrial or ventricular arrhythmias
- Have an unstable condition likely to require surgical intervention during the study.
- Evidence of decreased growth velocity (AGV < 1.5 cm/year) as assessed over a period of at least 6 months and/or growth plate closure assessed using left hand antero posterior (AP) X-rays, by the Greulich and Pyle method (Greulich 1971) as per standard of care.
- Vitamin D deficiency (concentration of blood 25-hydroxy-vitamin D < 12 ng/ml or < 30 nmol/L) at Screening. Note: participants with blood 25-hydroxy-vitamin D below the indicated threshold may receive supplementation and re-screen after 8 weeks.
See the full eligibility criteria
Who can join
- Participants must be ≥ 3 to < 18 years of age at enrollment.
- A confirmed genetic diagnosis of HCH, demonstrating evidence of a pathogenic FGFR3 variant associated with HCH, as confirmed by prior genetic testing in Study 111-902.
- At least a 6-month period of pre-treatment standing height assessments prior to randomization.
- A height Z score of ≤ − 2.0 SDS in reference to the general population of the same age and sex, as calculated using the Center for Disease Control and Prevention (CDC) growth charts (https://www.cdc.gov/growthcharts/zscore.htm).
- Males and females are eligible to participate in this clinical study.
- Females ≥ 10 years old or who have begun menses must have a negative pregnancy test at the Screening 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 must be capable of giving signed informed consent as described in Appendix 1 in Section 10.1, which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol.
- 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. Participants under the age of 18 must be willing and able to provide written assent (if required by local regulations or the IRB/IEC) after the nature of the study has been explained and prior to performance of any study-related procedure.
What rules you out
- Short stature condition other than HCH (eg, ACH, trisomy 21, pseudo-achondroplasia).
- Have any of the following documented conditions: a. Hypothyroidism or hyperthyroidism, growth hormone deficiency, hypercortisolism or hypopituitarism, or other endocrine cause of short stature b. Insulin-requiring diabetes mellitus c. Autoimmune inflammatory disease (including but not limited to systemic lupus erythematosus, juvenile dermatomyositis and scleroderma) d. Other chronic diseases that per investigator determination may be causative of a participant’s short stature, including conditions causing malnutrition (including but not limited to inflammatory bowel disease, cystic fibrosis, celiac disease and eating disorders) e. Autonomic neuropathy
- Have any of the following documented conditions: a. Renal insufficiency defined as an estimated glomerular filtration rate (eGFR) of < 60 ml/min/ 1.73 m2 using the revised Schwartz Pediatric Bedside eGFR formula (Schwartz 2009). b. Chronic anemia (hemoglobin < 10 g/dl. Note: participants with hemoglobin below the indicated threshold may receive treatment for anemia and re-screen after 8 weeks. c. Recurrent symptomatic hypotension (defined as episodes of low blood pressure generally accompanied by symptoms ie, dizziness, fainting, postural tachycardia) or recurrent symptomatic orthostatic hypotension. d. History of clinically significant cardiac or vascular disease as judged by the Investigator, including but not limited to the following: i. Cardiac dysfunction ii. Hypertrophic cardiomyopathy iii. Pulmonary hypertension iv. Congenital heart disease v. Cerebrovascular disease vi. Aortic insufficiency or other clinically significant valvular dysfunction vii. Clinically significant atrial or ventricular arrhythmias
- Have an unstable condition likely to require surgical intervention during the study.
- Evidence of decreased growth velocity (AGV < 1.5 cm/year) as assessed over a period of at least 6 months and/or growth plate closure assessed using left hand antero posterior (AP) X-rays, by the Greulich and Pyle method (Greulich 1971) as per standard of care.
- Vitamin D deficiency (concentration of blood 25-hydroxy-vitamin D < 12 ng/ml or < 30 nmol/L) at Screening. Note: participants with blood 25-hydroxy-vitamin D below the indicated threshold may receive supplementation and re-screen after 8 weeks.
The study team makes the final eligibility decision.
Where it's taking place
- Australia
- Canada
- United Kingdom
- Japan
- United States
Questions & answers
Do participants get paid in this trial?
This listing doesn't specify compensation. Many trials still reimburse travel or offer a stipend, so it's worth asking the study team when you connect.
Is it free to join, and do I need insurance?
Searching and applying through BridgeMD is free. In clinical trials the study-related treatment and visits are generally provided at no cost to you. You usually don't need insurance to take part - confirm specifics with the study team.
How long does this study last?
The listing doesn't state an exact length. The study team walks you through the schedule and number of visits before you decide to enroll.
Who can join this trial?
This study is enrolling all sexes, 0-17 years. The study team makes the final eligibility decision.
Where is this trial taking place?
Study sites include Australia; Canada; United Kingdom; Japan; United States. Enter your location above to see the nearest site and check your eligibility.
Explore other conditions
BridgeMD is an information and trial-matching tool - not medical advice, and not the study sponsor. Details come from EU CTIS; the study team decides eligibility.