The purpose of this clinical trial is to evaluate efficacy and safety of once weekly subcutaneous (SC) doses of navepegritide 100 μg/kg compared to placebo (inactive drug) in adolescents aged 12 to 18 years with Achondroplasia. What will be measured is Annualized Growth Velocity after a 52-week treatment period.
Who can participate
Age range12 Years – 17 Years
SexALL
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Inclusion Criteria:
* Written, signed informed consent and/or assent of the participant, participant parent(s) or legal guardian(s) of the participant, and as required by the institutional review board/human research ethics committee/independent ethics committee (IRB/HREC/IEC). For participants who are below the age of consent, a written assent will be obtained in accordance with applicable requirements as required by IRB/HREC/IEC. Upon reaching the legal age of consent, depending on applicable requirements, these participants will be asked to give their own written consent.
* Male or female, between 12 (inclusive) and 18 years of age at the time of randomization
* Clinical diagnosis of ACH with documented genetic confirmation available. Documentation of historic test results are acceptable for proof of diagnosis.
* Parent(s)/legal guardian(s) willing and able to administer weekly SC injections of IMP and to follow the protocol.
* At least one historical standing height measurement available from medical records. The measurement must have been collected between 6 months to 15 months prior to the time of screening.
Exclusion Criteria:
* Participation (signed informed consent) in any interventional clinical trial within 3 months prior to Screening unless no doses of IMP was given.
* Decreased growth velocity (AGV less than 1.5 cm/year based on measurement over a period of at least 6 months) or radiological evidence of growth plate closure.
* Known or suspected hypersensitivi…