This is the only confirmed case of an Emperor being killed by his vassal. (There is an unconfirmed case of Emperor Komei who was allegedly poisoned to death. Also, Emperor Anko was allegedly killed by one of the members of the Imperial family, but his case is often excluded due to its low historicity.)
臣下により天皇が殺害されたのは、確定している例では唯一である（他には、毒殺の疑いのある孝明天皇の例が未確定である。安康天皇は同じ皇族によって殺害されているが、史実性が低いので除外されることが多い）。