as far as I know
À ma connaissance, c'est un étudiant appliqué.
As far as I know, he is a diligent student.
Ils n'ont pas d'enfants, à ma connaissance.
They don't have any children, as far as I know.
À ma connaissance, on a pas trouvé de corps d'homme.
As far as I know, no man's body has been found.
— Mystic River (2003)
À ma connaissance, ça ne s'est jamais produit.
As far as I know, that has never happened.