A prosthetic valve, preferably an expandable prosthetic valve, having a valve component (3), preferably a mitral valve component, made of a single functional leaflet (6) wherein the prosthetic valve (1) comprises at least two tissue supports (4', 4'',4''',4'''') attachable to an inner surface (5) of a stent component (2), wherein at least one tissue support (4', 4'',4''',4'''') comprises at least one attachment area (7', 7''), at least a section of the attachment area extending essentially inwardly from the inner surface (5), wherein said leaflet (6) is attached to at least one tissue support (4', 4'',4''',4''') at the section of said attachment area(s) (7', 7'') such that the leaflet (6) is arranged between said attachment area(s) (7',7'') or integrally formed with one tissue support (4',4'',4''',4'''') and attached to the second tissue support (4',4'',4''',4'''') at the section of the attachment area(s) (7',7'').
