The Abbott Cephea Mitral Valve Disease Registry is a study to collect information on patients with mitral valve disease. This condition affects a valve in the heart that helps blood flow properly. The study focuses on patients with symptoms like mitral regurgitation (leakage of the valve) or mitral stenosis (narrowing of the valve). The goal is to see how fixing these problems helps patients, especially those who might need a procedure called Transcatheter Mitral Valve Replacement (TMVR). This is a method to replace the valve without traditional surgery.

• Participants must be 18 years or older and agree to follow-up visits.
• People with other serious health problems or who have had certain previous treatments can't participate.
• The study might help guide future treatments and policies for heart valve issues.