Question: Who was the viceregal Sakya regime overthrown by?
Sentence: Wylie argues that Ming titles of "King" granted indiscriminately to various Tibetan lamas or even their disciples should not be viewed as reappointments to earlier Yuan dynasty offices, since the viceregal Sakya regime established by the Mongols in Tibet was overthrown by the Phagmodru myriarchy before the Ming existed.
Answer in sentence: yes