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Clinical Trial Details — Status: Withdrawn

Administrative data

NCT number NCT04363294
Other study ID # STU-2020-0386
Secondary ID
Status Withdrawn
Phase N/A
First received
Last updated
Start date March 2022
Est. completion date August 2023

Study information

Verified date March 2021
Source University of Texas Southwestern Medical Center
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Our ultimate goal is to design a multi-center randomized trial to test the hypothesis that targeted testing for transthyretin cardiac amyloid (ATTR) will improve survival and health status among aortic stenosis patients who undergo transcatheter aortic valve replacement (TAVR). The hypothesis of this pilot study is to evaluate if invasive cardiac hemodynamics obtained after TAVR, by using the AortoVentricular index (AVi), can be used as a novel test to help identify participants with ATTR. Aim 1. To determine if an abnormal AVi value can identify ATTR among aortic stenosis patients undergoing TAVR. Aim 2. To determine if s' from echocardiography plus AVi can enhance the prediction of ATTR among aortic stenosis patients undergoing TAVR. Aim 3. To design a pilot trial to improve patient outcomes after TAVR by targeted testing for ATTR.


Description:

Aim 1. To determine if an abnormal AVi value can identify ATTR among aortic stenosis patients undergoing TAVR. Patients undergoing TAVR for symptomatic severe aortic stenosis, with pre-TAVR echocardiography and post-implantation invasive hemodynamic assessment are eligible for study participation. The AVi will be recorded from post-implantation invasive hemodynamic assessment. Participants will undergo bone scintigraphy (99mTc-pyrophosphate Planar/SPECT imaging) within 28 days after TAVR. Participants with abnormal bone scintigraphy require evaluation for a monoclonal protein with blood/urine laboratory testing, and possible tissue biopsy/Hematology consultation to exclude light-chain amyloidosis. Participants who are ATTR positive will receive comprehensive heart failure management and possible genetic testing to evaluate for mutated ATTR. The prevalence of ATTR will be reported among participants with AVi <0.5 versus ≥0.5 mm Hg/beats per minute. Test performance of AVi to predict ATTR will be reported. Aim 2. To determine if s' obtained from echocardiography tissue Doppler imaging plus AVi can enhance the prediction of ATTR among aortic stenosis patients undergoing TAVR. The s' will be recorded from pre-TAVR tissue Doppler imaging of the mitral annulus. The prevalence of ATTR will be reported among participants with both s' ≤6 cm/second and AVi <0.5 mm Hg/beats per minute versus s' >6 cm/second and AVi <0.5 mm Hg/beats per minute. Aim 3. To design a pilot trial to improve patient outcomes after TAVR by targeted testing for ATTR. The change in Kansas City Cardiomyopathy Questionnaire-12 from baseline to 12-months and survival with reasonable quality of life at 12-months will be reported among participants who are ATTR positive vs. ATTR negative.


Recruitment information / eligibility

Status Withdrawn
Enrollment 0
Est. completion date August 2023
Est. primary completion date September 2022
Accepts healthy volunteers No
Gender All
Age group 75 Years and older
Eligibility Inclusion Criteria: - Successful implantation of a transcatheter heart valve with a commercially available valve (i.e. Sapien 3, Sapien Ultra, Evolut R, Evolut Pro, Evolut Pro+, or Lotus Edge) for native or bioprosthetic aortic stenosis - Pre-implantation echocardiography with tissue Doppler imaging, if feasible - Post-implantation invasive cardiac hemodynamics Exclusion Criteria: - Age <75 years - Moderate to severe paravalvular aortic regurgitation on post-operative echocardiography

Study Design


Intervention

Diagnostic Test:
PYP scan
99mTc-labeled pyrophosphate

Locations

Country Name City State
n/a

Sponsors (2)

Lead Sponsor Collaborator
University of Texas Southwestern Medical Center Mid America Heart Institute

Outcome

Type Measure Description Time frame Safety issue
Other Prevalence ATTR with s'<6 plus AVi <0.5 Prevalence of ATTR among participants with both s'<6 and AVi <0.5 mm Hg/beats per minute Within 28 days after TAVR when bone scan completed
Other Prevalence ATTR with s'=6 plus AVi <0.5 Prevalence of ATTR among participants with both s'=6 and AVi <0.5 mm Hg/beats per minute Within 28 days after TAVR when bone scan completed
Other KCCQ-12 Kansas City Cardiomyopathy Questionnaire(KCCQ) - a shortened 12 question version of the 23-item, self-administered instrument that quantifies physical function, symptoms (frequency, severity and recent change), social function, self-efficacy and knowledge, and quality of life. Scores are transformed to a range of 0-100, in which higher scores reflect better health status. 1 year after TAVR
Other Favorable outcome Proportion of subjects who are alive with reasonable quality of life. Reasonable quality of life is defined as KCCQ-12 =60 without any meaningful worsening (decrease in KCCQ-12 summary score =10). 1 year after TAVR
Primary Prevalence ATTR with AVi <0.5 Prevalence of ATTR among participants with AVi <0.5 mm Hg/beats per minute Within 28 days after TAVR when bone scan completed
Primary Prevalence ATTR with AVi =0.5 Prevalence of ATTR among participants with AVi =0.5 mm Hg/beats per minute Within 28 days after TAVR when bone scan completed
Secondary Sensitivity AVi Sensitivity of AVi <0.5 mm Hg/beats per minute Within 28 days after TAVR when bone scan completed
Secondary Specificity AVi Specificity of AVi =0.5 mm Hg/beats per minute Within 28 days after TAVR when bone scan completed
Secondary Positive predictive value AVi Positive predictive value of AVi <0.5 at predicting ATTR Within 28 days after TAVR when bone scan completed
Secondary Negative predictive value AVi Negative predictive value of AVi =0.5 at ruling out ATTR Within 28 days after TAVR when bone scan completed
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