A Single and Multiple Ascending Dose Study of CK-3773274 in Healthy Adult Subjects

• Sponsor: Cytokinetics
• Information provided by (Responsible Party): Cytokinetics

Study Description

Brief Summary:

The purposes of this study are to:

1. Learn about the safety of CK-3773274 after a single dose and multiple doses in healthy subjects.
2. Learn how healthy subjects tolerate CK-3773274 after a single dose and multiple doses.
3. Find out how much CK-3773274 is in the blood after a single dose and multiple doses.
4. Determine the effect of CK-3773274 on the pumping function of the heart

Condition or disease	Intervention/treatment	Phase
Symptomatic Obstructive Hypertrophic Cardiomyopathy	Drug: CK-3773274; Drug: Placebo	Phase 1

Study Design

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Study Type :	Interventional (Clinical Trial)
Estimated Enrollment :	96 participants
Allocation:	Randomized
Intervention Model:	Sequential Assignment
Masking:	Triple (Participant, Investigator, Outcomes Assessor)
Primary Purpose:	Basic Science
Official Title:	A Phase 1, Double-Blind, Randomized, Placebo-Controlled, Multi-Part, Single and Multiple Ascending Dose Study of CK-3773274 in Healthy Adult Subjects
Actual Study Start Date :	November 8, 2018
Estimated Primary Completion Date :	June 2019
Estimated Study Completion Date :	June 2019

Arms and Interventions

Arm	Intervention/treatment
Experimental: CK-3773274 for SAD Cohorts; Subjects will be assigned to one of 8 planned dose cohorts and receive single doses of CK-3773274	Drug: CK-3773274; CK-3773274
Placebo Comparator: Placebo for SAD Cohorts; Subjects will be assigned to one of 8 planned cohorts and receive single doses of placebo	Drug: Placebo; Placebo
Experimental: CK-3773274 for MAD Cohorts; Subjects will be assigned to one of 3 planned dose cohorts and receive multiple doses of CK-3773274	Drug: CK-3773274; CK-3773274
Placebo Comparator: Placebo for MAD Cohorts; Subjects will be assigned to one of 3 planned dose cohorts and receive multiple doses of placebo	Drug: Placebo; Placebo
Experimental: CK-3773274 for CYP2D6 Cohort; Subjects with CYP2D6 poor metabolizer phenotype will be assigned to receive a single dose of CK-3773274	Drug: CK-3773274; CK-3773274
Placebo Comparator: Placebo for CYP2D6 Cohort; Subjects with CYP2D6 poor metabolizer phenotype will be assigned to receive a single dose of placebo	Drug: Placebo; Placebo

Outcome Measures

Primary Outcome Measures :

1. Incidence of Adverse events and Safety Signals observed during single and multiple ascending doses of CK-3773274 administered orally to healthy adult subjects. [ Time Frame: Time Frame for SAD Cohorts: Day -1 - Day 10; Time Frame for MAD Cohorts: Day -1 - Day 21 ]
   Subject incidence of AEs, SAEs, and reduced LVEF

Secondary Outcome Measures :

1. Cmax of CK-3773274 after single and multiple ascending doses [ Time Frame: Time Frame for SAD Cohorts: Day -1 - Day 10; Time Frame for MAD Cohorts: Day -1 - Day 21 ]
   Maximum concentration after dosing (Cmax) following single and multiple doses of CK-3773274 administered to healthy subjects
2. Change in absolute reduction in ejection fraction relative to baseline with doses of CK-3773274 [ Time Frame: Time Frame for SAD Cohorts: Day -1 - Day 10; Time Frame for MAD Cohorts: Day -1 - Day 21 ]
   Changes from baseline in LVEF as measured by echocardiography with doses of CK-3773274
3. Assess the effect of CYP2D6 genetic variants of on the PK of CK-3773274 [ Time Frame: Day -1 - Day 10 ]
   Maximum concentration after dosing (Cmax) following a single dose administered to CYP2D6 poor metabolizers

Eligibility Criteria

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Ages Eligible for Study:	18 Years to 55 Years (Adult)
Sexes Eligible for Study:	All
Accepts Healthy Volunteers:	Yes

Criteria

Inclusion Criteria:

1. Males and females (of non-childbearing potential) between 18 and 55 years of age, inclusive
2. Body weight > 55.0 kg and body mass index within 18.0 to 32.0 kg/m2, inclusive
3. Normal cardiac structure and function, or if abnormalities are present, they are deemed not clinically significant
4. Normal to high left ventricular ejection fraction.
5. Normal electrocardiogram (ECG) or, if abnormalities are present, they are deemed not clinically significant
6. Clinical laboratory findings within normal range
7. Negative hepatitis panel (including hepatitis B surface antigen and hepatitis C antibody), and negative human immunodeficiency virus antibody screens
8. Willing and able to refrain from strenuous exercise (eg activity which could be expected to cause muscle soreness)
9. For Part 3 only: Subject is a CYP2D6 poor metabolizer

Exclusion Criteria:

1. History of any significant illness or disorder
2. History of stomach or intestinal surgery or resection (appendectomy, hernia repair, and/or cholecystectomy will be allowed)
3. A clinically significant illness within 4 weeks of Check-in
4. Inability to swallow capsules
5. History of or current substance abuse (drug or alcohol), known drug or alcohol dependence within the last 2 years prior to Screening, or positive test for drugs of abuse during the screening period
6. Use of any tobacco-containing or nicotine-containing products within 3 months prior to Check-in
7. Participation in any other investigational study drug trial in which receipt of an investigational study drug occurred within 30 days prior to Check-in
8. Any blood donation within 60 days of dosing, plasma donation within 30 days of dosing, or receipt of blood products within 2 months prior to Check-in

Contacts and Locations

Contacts

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Contact: MD Cytokinetics	650-624-2929	medicalaffairs@cytokinetics.com

Locations

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United States, Arizona
Clinical Site	Recruiting
Tempe, Arizona, United States, 85283

Sponsors and Collaborators

Cytokinetics

Investigators

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Study Director:	Study Director MD	Cytokinetics

More Information

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Responsible Party:	Cytokinetics
ClinicalTrials.gov Identifier:	NCT03767855 History of Changes
Other Study ID Numbers:	CY 6011
First Posted:	December 7, 2018
Last Update Posted:	February 15, 2019
Last Verified:	February 2019

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Studies a U.S. FDA-regulated Drug Product:		Yes
Studies a U.S. FDA-regulated Device Product:		No

Additional relevant MeSH terms:

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Cardiomyopathies; Hypertrophy; Cardiomyopathy, Hypertrophic; Heart Diseases; Cardiovascular Diseases	Pathological Conditions, Anatomical; Aortic Stenosis, Subvalvular; Aortic Valve Stenosis; Heart Valve Diseases