Syncardia 50cc TAH-t as a Bridge to Transplant

SynCardia 50cc Temporary Total Artificial Heart (TAH-t) as a Bridge to Transplant

The primary objective of the study is to evaluate whether the 50cc TAH-t can safely support, and provide probable benefit to, transplant-eligible pediatric patients (aged 10 - 18 years) and can safely and effectively support transplant-eligible adult patients (aged 19 - 75 years) at imminent risk of death from biventricular failure without experiencing permanent disabling, stroke-related deficits.

The study will be conducted as a three-arm trial of the 50cc temporary Total Artificial Heart (TAH-t) as a bridge to transplant:

• The Primary Pediatric Arm of the trial will evaluate the safety and probable benefit of the 50cc TAH-t for transplant-eligible patients 10 through 18 years of age.
• The Primary Adult Arm of the trial will evaluate the safety and efficacy of the 50cc TAH-t for transplant-eligible patients 19 through 75 years of age.
• The Secondary Arm will capture pediatric and adult subjects who did not meet enrollment criteria for a Primary Arm, but meet the less restrictive Secondary Arm enrollment criteria, in order to further characterize the use of the device.

Study Overview

• Status: Terminated
• Conditions: Cardiac Failure; Heart Failure, Right-Sided; Heart Failure, Left-Sided
• Intervention / Treatment: Device: SynCardia 50cc temporary Total Artificial Heart (TAH-t)

Detailed Description

Heart failure is the reduced ability of the native heart to pump blood and maintain normal bodily function. Heart transplantation is the standard of care treatment for end-stage heart failure but the supply of donor hearts is insufficient to meet the need and many patients are not eligible for transplantation because of age or comorbid conditions.

On 15 October 2004, the SynCardia 70cc temporary TAH-t System received Food and Drug Administration (FDA) approval for Premarket Approval Application (PMA) #P030011 for in-hospital use as a bridge to transplant (BTT) in cardiac transplant-eligible candidates at risk of imminent death from biventricular failure. The system consists of the implantable TAH-t and an external pneumatic driver. Subsequent to the original approval, two additional external pneumatic drivers have been approved for use with the 70cc TAH-t.

On 30 January 2013, FDA granted a Humanitarian Use Designation (HUD) to the 50cc TAH-t for use as BTT in pediatric patients with biventricular heart failure who have a body surface area (BSA) that can sufficiently accommodate the device. To evaluate the ability of the device to support patients who are too small to be supported with the 70cc TAH-t, SynCardia will conduct a clinical study.

The study will be conducted as a three-arm trial of the 50cc temporary Total Artificial Heart (TAH-t) as a bridge to transplant:

• The Primary Pediatric Arm of the trial will evaluate the safety and probable benefit of the 50cc TAH-t for transplant-eligible patients 10 through 18 years of age.
• The Primary Adult Arm of the trial will evaluate the safety and efficacy of the 50cc TAH-t for transplant-eligible patients 19 through 75 years of age.
• The Secondary Arm will capture pediatric and adult subjects who did not meet enrollment criteria for the pediatric arm, but meet the less restrictive Secondary Arm enrollment criteria, in order to further characterize the use of the device.

Pediatric subject data through six months post-implant will be reported to FDA to support a Humanitarian Device Exemption (HDE) application for an orphan indication in pediatric patients for which there is no alternative replacement device. Pediatric subjects (enrolled in the Primary Pediatric Arm or Secondary Arm) who are continuing on TAH-t support at the six month study visit will continue to be followed under the study every six months until transplant, withdrawal from the study, all subjects in the respective arm have reached an endpoint, or death, whichever occurs first.

The primary objective of the Primary Pediatric Arm of the study is to evaluate whether the 50cc TAH-t can safely support, and provide probable benefit to, transplant-eligible pediatric patients at imminent risk of death from biventricular failure without experiencing permanent disabling, stroke-related deficits. Probable benefit will be measured as transplanted during the first six months, or survival at six months and continuing on support on the initially placed 50cc TAH-t, without experiencing permanent disabling stroke-related deficits.

Safety will be evaluated by the characterization of the adverse event (AE) profile through the six month study end date. AEs will be identified by the terms and definitions of the Pedimacs/Intermacs Registry. The secondary endpoints to establish safety for both the pediatric and adult arms will be measured by performance goals (based on prior experience with the 70cc TAH-t) for the four adverse event categories that are likely to delay or preclude transplant. The four categories are: Major infection (sepsis), Neurological event (CVA), Chronic renal dysfunction, Major device failures/malfunctions per the Pedimacs/Intermacs AE definitions.

Adult patient data through six months post-implant will be reported to FDA to support a Premarket application (PMA) for treatment of small-statured adult patients who are unable to accommodate the 70cc TAH-t in their chest cavity and for whom there is no alternative replacement device. Adult subjects (enrolled in the Primary Adult Arm or the Secondary Arm) will be followed through six months post-implant and, if continuing on support at that time, will continue to be followed under the study every six months until transplant, withdrawal from the study, all subjects in the respective arm have reached an endpoint, or death, whichever occurs first.

• Study Type: Interventional
• Enrollment (Actual): 16
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United States
  • Arizona
    • Tucson, Arizona, United States, 85724
      • Banner University Medical Center
  • California
    • Los Angeles, California, United States, 90095
      • University of California Los Angeles
    • Los Angeles, California, United States, 90048
      • Cedars-Sinai Medical Center
  • Florida
    • Gainesville, Florida, United States, 32610
      • Shands Hospital at the University of Florida
  • Indiana
    • Indianapolis, Indiana, United States, 46202
      • Indiana University Health
    • Indianapolis, Indiana, United States, 46202
      • Riley Hospital for Children at Indiana University Health
  • Kentucky
    • Louisville, Kentucky, United States, 40202
      • University of Louisville
  • Louisiana
    • New Orleans, Louisiana, United States, 70121
      • Ochsner Medical Center
  • New York
    • Rochester, New York, United States, 14642
      • Strong Memorial Hospital - Paul Yu Heart Center
  • Ohio
    • Cincinnati, Ohio, United States, 45229
      • Cincinnati Children's Hospital
    • Columbus, Ohio, United States, 43210
      • The Ohio State University
  • Oklahoma
    • Oklahoma City, Oklahoma, United States, 73112
      • Integris Baptist Medical Center
  • Pennsylvania
    • Hershey, Pennsylvania, United States, 17033
      • The Milton S Hershey Medical Center
    • Philadelphia, Pennsylvania, United States, 19104
      • The Children's Hospital of Philadelphia
    • Philadelphia, Pennsylvania, United States, 19107
      • Thomas Jefferson University Hospital
  • Texas
    • Dallas, Texas, United States, 75246
      • Baylor University Medical Center at Dallas
    • Dallas, Texas, United States, 75235
      • Children's Health of Dallas
    • Houston, Texas, United States, 77030
      • Memorial Hermann Hospital
    • Houston, Texas, United States, 77030
      • Methodist DeBakey Heart and Vascular Center
  • Virginia
    • Charlottesville, Virginia, United States, 22903
      • University of Virginia Medical Center
    • Richmond, Virginia, United States, 90048
      • Virginia Commonwealth University
  • Washington
    • Seattle, Washington, United States, 98195
      • University of Washington Medical Center
    • Spokane, Washington, United States, 99204
      • Providence Sacred Heart Medical Center
  • Wisconsin
    • Milwaukee, Wisconsin, United States, 53226
      • Children's Hospital of Wisconsin
    • Milwaukee, Wisconsin, United States, 53226
      • Froedtert & the Medical College of Wisconsin
    • Milwaukee, Wisconsin, United States, 53215
      • Aurora St. Luke's Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 8 years and older (Child, Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria (Primary Pediatric and Adult Arms):

• At imminent risk of death from biventricular heart failure
• Aged 10 - 18 years (pediatric); 19 - 75 years (adults) at time of implant
• With two functional atrioventricular (A-V) valves
• With Body Surface Area (BSA) of 1.2 through 1.85m2
• With adequate sternum to T10 distance OR Adequate room in chest as determined by 3-D imaging assessment or by other standard clinical assessments

Exclusion Criteria:

• Patients who are not cardiac transplant-eligible

• Cardiac transplant-eligible patients

  • Who cannot be adequately anticoagulated on the TAH-t
  • With insufficient space in the chest
  • Who are on extracorporeal membrane oxygenation (ECMO) support > 3 days
• Patients who are being supported by an investigational device at the time of evaluation for a 50cc TAH-t
• Patients who have required cardiopulmonary resuscitation (CPR) for > 30 minutes within 14 days prior to proposed implant
• Patients who have experienced a stroke within 30 days prior to proposed implant
• Patients who are dialysis-dependent at time of proposed implant

Inclusion Criteria, Secondary Arm (pediatric and adult patients)

• Not eligible for Primary Arm
• At imminent risk of death from biventricular heart failure
• With Body Surface Area (BSA) of 1.2 through 1.85m2
• With adequate sternum to T10 distance OR Adequate room in chest as determined by 3-D imaging assessment or by other standard clinical assessments

Exclusion Criteria, Secondary Arm:

• Patients who are not cardiac transplant-eligible

• Cardiac transplant-eligible patients

  • Who cannot be adequately anticoagulated on the TAH-t
  • With insufficient space in the chest
• Patients who are being supported by an investigational device at the time of evaluation for a 50cc TAH-t

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Non-Randomized
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Primary Pediatric Arm; Cardiac transplant-eligible pediatric patients at imminent risk of death from biventricular failure who are 10 - 18 years old at time of TAH-t implant. The intervention is implantation with the 50cc temporary Total Artificial Heart as a bridge to transplantation.	Device: SynCardia 50cc temporary Total Artificial Heart (TAH-t); Replacement of both ventricles and all four valves with the investigational device as a bridge to transplantation.
Experimental: Primary Adult Arm; Cardiac transplant-eligible adult patients at imminent risk of death from biventricular failure who are 19 - 75 years old at time of TAH-t implant. The intervention is implantation with the 50cc temporary Total Artificial Heart as a bridge to transplantation.	Device: SynCardia 50cc temporary Total Artificial Heart (TAH-t); Replacement of both ventricles and all four valves with the investigational device as a bridge to transplantation.
Experimental: Secondary Arm; Cardiac transplant-eligible pediatric and adult patients at imminent risk of death from biventricular failure who do not meet enrollment criteria for a Primary Arm, but meet less restrictive enrollment criteria for the Secondary Arm. The intervention is implantation with the 50cc temporary Total Artificial Heart as a bridge to transplantation.	Device: SynCardia 50cc temporary Total Artificial Heart (TAH-t); Replacement of both ventricles and all four valves with the investigational device as a bridge to transplantation.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Probable Benefit (for Pediatric Arm); Efficacy (for Adult Arm)	Probable benefit will be measured at six months post-implant as either transplanted during the first six months, or continuing on support at six months on the same 50cc TAH-t, without experiencing permanent disabling stroke-related deficits.	6 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Safety: Performance Goal of Four Adverse Event Categories	Safety will be measured by comparison of rate of occurrence of Major infection (sepsis), Neurological event (CVA), Chronic renal dysfunction, and Major device failures/malfunctions against individual performance goals (based on prior 70cc TAH-t experience).	Six months

Collaborators and Investigators

• Sponsor: SynCardia Systems. LLC
• Investigators: Principal Investigator: David Morales, MD, Children's Hospital Medical Center, Cincinnati; Principal Investigator: Francisco Arabia, MD, Cardiac-Dynamics

Study record dates

Study Major Dates

• Study Start (Actual): October 1, 2015
• Primary Completion (Actual): July 29, 2020
• Study Completion (Actual): July 29, 2020

Study Registration Dates

• First Submitted: December 4, 2014
• First Submitted That Met QC Criteria: May 27, 2015
• First Posted (Estimate): June 1, 2015

Study Record Updates

• Last Update Posted (Actual): August 10, 2020
• Last Update Submitted That Met QC Criteria: August 6, 2020
• Last Verified: August 1, 2020

More Information

Terms related to this study

• Keywords: SynCardia; Artificial Heart; Biventricular Heart Failure
• Additional Relevant MeSH Terms: Heart Diseases; Cardiovascular Diseases; Heart Failure
• Other Study ID Numbers: RA-551