Transcatheter edge-to-edge repair
Transcatheter edge-to-edge repair has been studied in 10 papers since 2024: 9 observational studies in people, 1 review; 5 in the past year. The newest paper, Mar 19, 2026: “Transcatheter vs Surgical Tricuspid Valve Repair: An Analysis of Medicare Beneficiaries”.
10 papers study it6 findingsUpdated
“Conversely, in secondary MR, it significantly increased in those with successful MR reduction”
None of its findings points the other way.
- 3 independent labs in 2 countries
- Funders: Boston Scientific and 7 more
- 3 of 6 findings with company ties
- Humans9
What did studies of Transcatheter edge-to-edge repair find?
4Studies of Transcatheter edge-to-edge repair measured 4 outcomes; the most studied are Kansas City Cardiomyopathy Questionnaire Overall Summary score (1 study), left ventricular end-diastolic volume (1) and mortality (1).
Kansas City Cardiomyopathy Questionnaire Overall Summary score
upin humans1
1 study
Kansas City Cardiomyopathy Questionnaire Overall Summary score
upin humans1
Transcatheter edge-to-edge repair is linked with better Kansas City Cardiomyopathy Questionnaire Overall Summary score in humans (primary mitral regurgitation) (improved significantly).
“Functional status and Kansas City Cardiomyopathy Questionnaire - Overall Score improved significantly across age groups, without differences according to age.”
Humansprimary mitral regurgitation1 year
Journal of the American Heart Association
More on Kansas City Cardiomyopathy Questionnaire Overall Summary score
Left ventricular end-diastolic volume
downin humans1
1 study
Left ventricular end-diastolic volume
downin humans1
Transcatheter edge-to-edge repair is linked with lower left ventricular end-diastolic volume in humans (primary mitral regurgitation) (-12.0±28.8 mL, P=0.003).
“LV end-diastolic volumes improved to similar extent (-12.0±28.8 mL, P=0.003 and -14.1±31.5 mL, P<0.0001, P=0.34 across groups).”
Humansprimary mitral regurgitation1 year
Journal of the American Heart Association
Mortality
downin humans1
1 study
Mortality
downin humans1
Transcatheter edge-to-edge repair is linked with lower mortality in humans (43.2% versus 69.5%).
“The 1-year mortality rate in the MCS-assisted M-TEER group was lower than the estimated mortality rate in the virtual control group (43.2% versus 69.5%).”
Humansin critically ill patients with significant mitral regurgitation and unstable hemodynamics requiring MCSn = 105
Journal of the American Heart Association
Handgrip strength
upin humans1
1 study
Handgrip strength
upin humans1
Transcatheter edge-to-edge repair is linked with better handgrip strength in secondary MR with successful MR reduction (MR ≤2+).
“Conversely, in secondary MR, it significantly increased in those with successful MR reduction”
Humansin secondary MR with successful MR reduction (MR ≤2+)1 year
International journal of cardiology
What is Transcatheter edge-to-edge repair linked with?
2Studies link Transcatheter edge-to-edge repair with 2 measures, most often mortality (1 study) and composite of all-cause mortality and heart failure hospitalization (1).
Mortality
downin humans1HR 0.58
1 study
Mortality
downin humans1HR 0.58
Transcatheter edge-to-edge repair is linked with a lower risk of mortality in humans (moderate or severe AFMR) (HR 0.58, 95% CI 0.35-0.99).
“secondary endpoints (HR 0.58, 95% CI 0.35-0.99, P = .044).”
Humansmoderate or severe AFMRn = 1,081
European heart journal
Composite of all-cause mortality and heart failure hospitalization
downin humans1HR 0.65
1 study
Composite of all-cause mortality and heart failure hospitalization
downin humans1HR 0.65
Transcatheter edge-to-edge repair is linked with a lower risk of composite of all-cause mortality and heart failure hospitalization in humans (moderate or severe AFMR) (HR 0.65, 95% CI 0.43-0.99).
“TEER was associated with a lower incidence of the primary (hazard ratio [HR] 0.65, 95% confidence interval [CI] 0.43-0.99, P = .044)”
Humansmoderate or severe AFMRn = 1,081
European heart journal