RECRUITING

A Study to Evaluate the Effect of Aficamten in Pediatric Patients (Age 12 to <18 Years) With Symptomatic Obstructive Hypertrophic Cardiomyopathy (oHCM).

Conditions

Pediatric Symptomatic Obstructive Hypertrophic Cardiomyopathy CK-3773274 CK-274 Aficamten oHCM CEDAR CEDAR-HCM CY 6023

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Study Overview

This clinical trial focuses on testing the efficacy of different digital interventions to promote re-engagement in cancer-related long-term follow-up care for adolescent and young adult (AYA) survivors of childhood cancer.

Description

The purpose of this study is to evaluate the efficacy, safety and PK of aficamten in a pediatric population with symptomatic obstructive hypertrophic cardiomyopathy (oHCM).

Official Title

A Phase 2/3 Multicenter, Randomized, Double-Blind, Placebo-Controlled and Open-Label Extension Trial to Evaluate the Efficacy and Safety of Aficamten in a Pediatric Population With Symptomatic Obstructive Hypertrophic Cardiomyopathy

Quick Facts

Study Start:2024-05-29

Study Completion:2028-12

Study Type:Not specified

Phase:Not Applicable

Enrollment:Not specified

Status:RECRUITING

Study ID

NCT06412666

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Ages Eligible for Study:12 Years to 17 Years

Sexes Eligible for Study:ALL

Accepts Healthy Volunteers:No

Standard Ages:CHILD

Inclusion Criteria	Exclusion Criteria
* Period 1: Treatment Period * Males and females between 12 and \< 18 years of age at screening and at Day 1. * Body weight ≥ 45 kg for the initial cohort and then body weight ≥ 35 kg after at least 10 participants in the initial cohort have undergone dose titration up to Week 4 without observed events of LVEF \< 50% at the starting dose of 5 mg qd. * Core laboratory confirmation of the following oHCM echocardiographic criteria at screening: * Left ventricular (LV) hypertrophy with nondilated LV chamber in the absence of other cardiac disease. * LV end-diastolic wall thickness that meets a threshold of: * Z-score \> 2.5 in the absence of symptoms or family history or * Z-score \> 2 in the presence of positive family history or positive genetic test. * LVEF ≥ 60% AND Valsalva LVOT-G ≥ 50 mmHg. * oHCM of sarcomeric origin confirmed by genetic testing or, if unable to confirm by genetic testing, oHCM of sarcomeric origin may be presumed in the absence of history of metabolic disorders, mitochondrial cardiomyopathies, neuromuscular disease, malformation syndromes, infiltrative diseases/inflammation, and endocrine disorders (such as Fabry's disease, Noonan syndrome with left ventricular hypertrophy, and amyloid-cardiomyopathy). * New York Heart Association (NYHA) Class ≥ II at screening. * Adequate acoustic windows for echocardiography. * Participants on beta blockers, verapamil, diltiazem, or disopyramide should have been on stable doses for more than 4 weeks prior to randomization. * Completed Period 1. If unable to complete Period 1 due to circumstances not related to compliance or safety, the Medical Monitor may review and determine eligibility. * LVEF ≥ 55% after washout.	* Period 1: Treatment Period * Significant valvular heart disease. * Moderate or severe valvular aortic stenosis or fixed subaortic obstruction. * Mitral regurgitation that is greater than mild in severity and not due to systolic anterior motion of the mitral valve (per judgment of Principal Investigator or designee). * No evidence of fixed left-sided obstruction (eg, subaortic, aortic valve, or coarctation of the aorta). * History of LV systolic dysfunction (LVEF \< 45%) or stress cardiomyopathy at any time during their clinical course. * History of congenital heart disease other than oHCM (may be enrolled if not hemodynamically significant in the judgement of the Principal Investigator and study Medical Monitor). * Has been treated with SRT (surgical myectomy or percutaneous alcohol septal ablation) or has plans for either treatment during the trial period. * History of paroxysmal or persistent atrial fibrillation or atrial flutter. * History of syncope, symptomatic ventricular arrhythmia, or sustained ventricular tachyarrhythmia within 3 months prior to screening. * History or evidence of any other clinically significant disorder, malignancy, active infection, other condition, or disease that, in the opinion of the Principal Investigator (or designee) or the Medical Monitor, would pose a risk to participant safety or interfere with the trial evaluation, procedures, or completion. * Current or previous use of drugs known to cause cardiomyopathy (eg, anthracyclines, monoclonal antibodies \[trastuzumab\], alkylating agents \[cyclophosphamide\], and tyrosine kinase inhibitors \[sunitinib and imatinib\]). * Currently participating in another investigational device or drug trial or received an investigational device or drug \< 1 month (or 5 half-lives for drugs, whichever is longer) prior to screening. * Implantable cardioverter defibrillator (ICD) implantation within 6 weeks of screening or planned ICD implantation during the trial period. * Has received prior treatment with aficamten or mavacamten.

Inclusion Criteria

Exclusion Criteria

* Period 1: Treatment Period
* Males and females between 12 and \< 18 years of age at screening and at Day 1.
* Body weight ≥ 45 kg for the initial cohort and then body weight ≥ 35 kg after at least 10 participants in the initial cohort have undergone dose titration up to Week 4 without observed events of LVEF \< 50% at the starting dose of 5 mg qd.
* Core laboratory confirmation of the following oHCM echocardiographic criteria at screening:
* Left ventricular (LV) hypertrophy with nondilated LV chamber in the absence of other cardiac disease.
* LV end-diastolic wall thickness that meets a threshold of:
* Z-score \> 2.5 in the absence of symptoms or family history or
* Z-score \> 2 in the presence of positive family history or positive genetic test.
* LVEF ≥ 60% AND Valsalva LVOT-G ≥ 50 mmHg.
* oHCM of sarcomeric origin confirmed by genetic testing or, if unable to confirm by genetic testing, oHCM of sarcomeric origin may be presumed in the absence of history of metabolic disorders, mitochondrial cardiomyopathies, neuromuscular disease, malformation syndromes, infiltrative diseases/inflammation, and endocrine disorders (such as Fabry's disease, Noonan syndrome with left ventricular hypertrophy, and amyloid-cardiomyopathy).
* New York Heart Association (NYHA) Class ≥ II at screening.
* Adequate acoustic windows for echocardiography.
* Participants on beta blockers, verapamil, diltiazem, or disopyramide should have been on stable doses for more than 4 weeks prior to randomization.
* Completed Period 1. If unable to complete Period 1 due to circumstances not related to compliance or safety, the Medical Monitor may review and determine eligibility.
* LVEF ≥ 55% after washout.

* Period 1: Treatment Period
* Significant valvular heart disease.
* Moderate or severe valvular aortic stenosis or fixed subaortic obstruction.
* Mitral regurgitation that is greater than mild in severity and not due to systolic anterior motion of the mitral valve (per judgment of Principal Investigator or designee).
* No evidence of fixed left-sided obstruction (eg, subaortic, aortic valve, or coarctation of the aorta).
* History of LV systolic dysfunction (LVEF \< 45%) or stress cardiomyopathy at any time during their clinical course.
* History of congenital heart disease other than oHCM (may be enrolled if not hemodynamically significant in the judgement of the Principal Investigator and study Medical Monitor).
* Has been treated with SRT (surgical myectomy or percutaneous alcohol septal ablation) or has plans for either treatment during the trial period.
* History of paroxysmal or persistent atrial fibrillation or atrial flutter.
* History of syncope, symptomatic ventricular arrhythmia, or sustained ventricular tachyarrhythmia within 3 months prior to screening.
* History or evidence of any other clinically significant disorder, malignancy, active infection, other condition, or disease that, in the opinion of the Principal Investigator (or designee) or the Medical Monitor, would pose a risk to participant safety or interfere with the trial evaluation, procedures, or completion.
* Current or previous use of drugs known to cause cardiomyopathy (eg, anthracyclines, monoclonal antibodies \[trastuzumab\], alkylating agents \[cyclophosphamide\], and tyrosine kinase inhibitors \[sunitinib and imatinib\]).
* Currently participating in another investigational device or drug trial or received an investigational device or drug \< 1 month (or 5 half-lives for drugs, whichever is longer) prior to screening.
* Implantable cardioverter defibrillator (ICD) implantation within 6 weeks of screening or planned ICD implantation during the trial period.
* Has received prior treatment with aficamten or mavacamten.

Contacts and Locations

Study Contact

Cytokinetics MD

CONTACT

6506242929

medicalaffairs@cytokinetics.com

Principal Investigator

Cytokinetics MD

STUDY_DIRECTOR

Cytokinetics

Study Locations (Sites)

Children's Mercy Hospital

Kansas City, Missouri, 64108

United States

Morristown Medical Center

Morristown, New Jersey, 07960

United States

Oregon Health & Science University

Portland, Oregon, 97239

United States

Collaborators and Investigators

Sponsor: Cytokinetics

Cytokinetics MD, STUDY_DIRECTOR, Cytokinetics

Study Record Dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Registration Dates

Study Start Date2024-05-29

Study Completion Date2028-12

Study Record Updates

Study Start Date2024-05-29

Study Completion Date2028-12

Terms related to this study

Keywords Provided by Researchers

CK-3773274
CK-274
Aficamten
Symptomatic Obstructive Hypertrophic Cardiomyopathy
oHCM
CEDAR
CEDAR-HCM
CY 6023

Additional Relevant MeSH Terms

Pediatric
Symptomatic Obstructive Hypertrophic Cardiomyopathy