Achondroplasia Clinical Trial
Official title:
A Pilot Project to Evaluate the Feasibility of Constructing a Concurrent External Control for Recifercept
NCT number | NCT05659719 |
Other study ID # | C4181010 |
Secondary ID | |
Status | Completed |
Phase | |
First received | |
Last updated | |
Start date | October 19, 2022 |
Est. completion date | May 16, 2023 |
Verified date | July 2023 |
Source | Pfizer |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
The purpose of this study is to learn about the study medicine (called recifercept) in people with achondroplasia. Achondroplasia is a very rare disease and patients of achondroplasia have short arms and legs. The study will include data already collected from a recifercept clinical trial and data collected from a separate study of achondroplasia. This study will compare patient experiences and will help the investigators determine if the study medicine, recifercept, is effective.
Status | Completed |
Enrollment | 250 |
Est. completion date | May 16, 2023 |
Est. primary completion date | May 16, 2023 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 3 Months to 15 Years |
Eligibility | Inclusion Criteria: - All patients from Study C4181005 who have completed Visits 1 through 11 (at D183) will be included in this project. To construct a concurrent external control, patients from Study C4181001 will need to meet the following inclusion criteria from Study C4181005 to be eligible for inclusion: - Documented, confirmed genetic diagnosis of achondroplasia from historical medical records (test must have been performed at a laboratory fully accredited for genetic testing under local regulations) - Aged = 3 months to <11 years (up to the day before 11th birthday inclusive) at time of enrollment into the observational natural history study. - Havecompleted at least 2 valid height/length measurements (at least 3 months apart) - Assessed for Tanner stage 1 during physical examination before or at enrollment (must include assessment of breast development for females, testicular stage for males) - Able to stand independently for height measurements (if = 2 years of age at enrollment); If aged <2 years at enrollment, has a documented historical MRI brain/cervical spine performed in the previous 12 months. - Have at least 6 months of available follow-up data after enrollment into the natural history study Exclusion Criteria: - Patients meeting any of the following criteria will not be included in the study: - Presence of severe obesity (BMI>95% percentile on Hoover-Fong BMI charts); - Body weight <7kg or >30kg - History of chronic kidney disease (CKD) or renal impairment - History of receipt of any treatment that are known to potentially affect growth (including oral steroids > 5 days in the last 6 months before enrollment, high dose inhaled corticosteroids (>800 mcg/day beclametasone equivalent) and medication for attention deficient hyperactivity disorder. - Less than 6 months since fracture or surgical procedure of any bone determined from the baseline visit date. - Presence of any internal guided growth plates/devices - History of removal of internal guided growth plates/devices within 6 months prior to enrollment |
Country | Name | City | State |
---|---|---|---|
United States | Pfizer | New York | New York |
Lead Sponsor | Collaborator |
---|---|
Pfizer |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Height growth | Increase in height growth above expected growth in reference population, defined as the height growth in the achondroplasia reference population +50% | 6 months | |
Secondary | Standing height | standing height in centimeters | 6 months | |
Secondary | Sitting height | sitting height in centimeters | 6 months | |
Secondary | Knee height | knee height in centimeters | 6 months | |
Secondary | Arm span | arm span in centimeters | 6 months | |
Secondary | Length of the legs | length of the legs in centimeters | 6 months | |
Secondary | Sitting height to standing height ratio | sitting height to standing height ratio (unitless) | 6 months | |
Secondary | arm span to height or length difference | arm span to height or length difference in centimeters | 6 months | |
Secondary | knee height to low segment ratio | knee height to low segment ratio (unitless) | 6 months | |
Secondary | Achondroplasia-related orthopaedic complications | lordosis, kyphoscoliosis, small foramen magnum, spinal stenosis | 6 months | |
Secondary | Other chondroplasia-related complications | sleep disordered breathing, acute otitis media, hydrocephalus | 6 months |
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