Continuation Study of Long-term Safety, Tolerability, Pharmacokinetics and Efficacy of Recifercept in Achondroplasia

NCT ID: NCT05116046

Last Updated: 2024-02-08

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

View full results

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

TERMINATED

Clinical Phase

PHASE2

Total Enrollment

35 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-12-24

Study Completion Date

2023-03-30

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

All participants who completed the prior study to assess long-term safety, tolerability, pharmacokinetics and efficacy, and in the opinion of the investigator, continue to have a positive risk:benefit profile, will be offered to enroll in this open-label extension (OLE) study for up to an additional 24 months of treatment.

Approximately 63 participants will be offered to continue at the previously received dose of Recifercept either

Low Dose Medium Dose High Dose

or at the therapeutic dose once it is identified.

Participants will attend the clinic monthly for 24 months. Assessments include safety, blood sampling, physical examination, vital signs, anthropometric body measurements \& patient/caregiver quality of life questionnaires.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Achondroplasia

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Low Dose

Low Dose

Group Type EXPERIMENTAL

Recifercept

Intervention Type BIOLOGICAL

Recifercept

Medium Dose

Medium Dose

Group Type EXPERIMENTAL

Recifercept

Intervention Type BIOLOGICAL

Recifercept

High Dose

High Dose

Group Type EXPERIMENTAL

Recifercept

Intervention Type BIOLOGICAL

Recifercept

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

Recifercept

Recifercept

Intervention Type BIOLOGICAL

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* Male and female participants between the ages of \>15 months to \<12 years inclusive, at Visit 1 (Screen 1).
* Participants who are willing and able to comply with all scheduled visits, treatment plan, laboratory tests lifestyle considerations and other study procedures.
* Completed the C4181005 Phase 2 study.
* Able to stand independently for height measurements (if ≥2 years of age at enrollment).

Exclusion Criteria

* Presence of co-morbid conditions or circumstances that, in the opinion of the investigator, would affect interpretation of growth data or ability to complete the trial procedures.
* Other medical or psychiatric condition including recent (within the past year) or active suicidal ideation/behavior or laboratory abnormality that may increase the risk of study participation or, in the investigator's judgment, make the participant inappropriate for the study.
* Presence of severe obesity (body mass index (BMI) \>95th percentile on Hoover-Fong BMI charts) \[Hoover-Fong et al, 2008\].
* Known closure of long bone growth plates (cessation of height growth).
* Body weight \>45 kg.
* History of hypersensitivity to study intervention or any excipients.
* History of any prior treatment with human growth hormone or related products (including insulin-like growth factor 1 \[IGF-1\]).
* History of receipt of any treatment that are known to potentially affect growth (including oral steroids \>5 days in the last 6 months, high dose inhaled corticosteroids (\>800 mcg/day beclometasone equivalent) and medication for attention deficit hyperactivity disorder).
* History of limb lengthening surgery (defined as distraction osteogenesis/Ilizarov/callostasis technique following submetaphyseal osteotomy to extend bone length).
* Any limb lengthening/corrective orthopaedic surgery planned at any point during the trial period.
* Less than 6 months since fracture or surgical procedure of any bone determined from the screening visit date.
* Presence of any internal guided growth plates/devices.
* History of removal of internal guided growth plates/devices within less than 6 months.
* History of receipt of any other (except recifercept) investigational product for achondroplasia or that may affect growth/interpretation of growth parameters.
* History of receipt of an investigational drug (not for achondroplasia/growth affecting) within the last 30 days (or as determined by the local requirement) or 5 half-lives preceding the first dose of study intervention used in this study (whichever is longer).
Minimum Eligible Age

15 Months

Maximum Eligible Age

12 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

Pfizer

INDUSTRY

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Responsibility Role SPONSOR

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Pfizer CT.gov Call Center

Role: STUDY_DIRECTOR

Pfizer

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

Ocean Sleep Medicine

Irvine, California, United States

Site Status

Long Beach Memorial Medical Center

Long Beach, California, United States

Site Status

MemorialCare Sleep Disorders Center at Long Beach Memorial Medical Center

Long Beach, California, United States

Site Status

Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center

Torrance, California, United States

Site Status

Nemours Children's Hospital, Delaware

Wilmington, Delaware, United States

Site Status

Texas Childrens Hospital/Baylor College of Medicine

Houston, Texas, United States

Site Status

Murdoch Children's Research Institute

Parkville, Victoria, Australia

Site Status

UZ Leuven - Center of Human Genetics

Leuven, Flanders, Belgium

Site Status

Antwerp University Hospital

Edegem, , Belgium

Site Status

Bispebjerg Hospital

Copenhagen, , Denmark

Site Status

Bispebjerg Hospital

Copenhagen, , Denmark

Site Status

Fondazione Policlinico Universitario Agostino Gemelli IRCCS Università Cattolica del Sacro Cuore

Roma, , Italy

Site Status

Centro Hospitalar e Universitário de Coimbra - Hospital Pediátrico

Coimbra, , Portugal

Site Status

Hospital Vithas San Jose

Vitoria-Gasteiz, Alava, Spain

Site Status

Countries

Review the countries where the study has at least one active or historical site.

United States Australia Belgium Denmark Italy Portugal Spain

Provided Documents

Download supplemental materials such as informed consent forms, study protocols, or participant manuals.

Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Related Links

Access external resources that provide additional context or updates about the study.

https://pmiform.com/clinical-trial-info-request?StudyID=C4181008

To obtain contact information for a study center near you, click here.

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

2021-003149-39

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

C4181008

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.