AttaCH: A Phase 2, Multicenter, Long-Term, Open Label Extension Trial Evaluating Safety, Tolerability, and Efficacy of Subcutaneous Doses of TransCon CNP Administered Once Weekly in Children and Adolescents with Achondroplasia
- Conditions
- Achondroplasia in Children and AdolescentsMedDRA version: 20.0Level: LLTClassification code: 10000452Term: Achondroplasia Class: 10010331Therapeutic area: Diseases [C] - Musculoskeletal Diseases [C05]
- Registration Number
- CTIS2022-502202-33-00
- Lead Sponsor
- Ascendis Pharma Growth Disorders A/S
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Recruiting
- Sex
- All
- Target Recruitment
- 113
Written, signed informed consent of the 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., Participants with achondroplasia who have completed a clinical trial with TransCon CNP., Parent(s)/legal guardian(s) willing and able to administer weekly SC injections of TransCon CNP and to follow the protocol., Considered eligible based on the safety evaluations performed for evaluating stopping/holding rule criteria during the prior TransCon CNP clinical trial.
Known or suspected hypersensitivity to the investigational product or related products (trehalose, tris[hydroxymethyl]aminomethane, succinate, and methoxy polyethylene glycol [mPEG])., Have received any dose of prescription medications, investigational medicinal product (other than TransCon CNP)., Sexually active female participants and female partners of male participants of childbearing potential not using a highly effective form of contraceptive (including oral, injectable, or implantable contraception, or intrauterine device (IUD) for the entire trial period and for 90 days post end of the trial., Participants with serum 25-hydroxy-vitamin D (25OHD) levels of <50 nmol/L (<20 ng/mL) at Visit 1 not on a treatment regimen of Vitamin D supplementation., Any disease or condition that, in the opinion of the investigator, may make the participant unlikely to fully complete the trial, may confound interpretation of trial results, or may present undue risk from receiving trial treatment. This could include family situations, complications or manifestations, or medications that might impact safety or be considered confounding.
Study & Design
- Study Type
- Interventional clinical trial of medicinal product
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Main Objective: To evaluate safety and tolerability of long-term use of TransCon CNP and <br>to evaluate sustained efficacy of TransCon CNP on growth;Secondary Objective: To evaluate sustained efficacy of TransCon CNP on growth, To evaluate pharmacokinetic properties of TransCon CNP, To assess potential immunogenic response to TransCon CNP;Primary end point(s): Incidence of TEAEs and safety assessments (safety labs, vital signs, physical examination, 12-lead ECG, and radiographic assessments) [Time Frame: Through trial completion], Height Z-scores [Time Frame: Through trial completion]
- Secondary Outcome Measures
Name Time Method Secondary end point(s):AGV (cm/year). Height at treatment completion [Time Frame: Through trial completion];Secondary end point(s):Plasma concentration of Total CNP, Free CNP, and mPEG [Time Frame: Through treatment completion];Secondary end point(s):Detection and analysis of ADA [Time Frame: Through trial completion]