 The Minyans destroyed themselves in a series of nuclear wars.<ref group="note">This is said to have been the reason the Time Lords established a "non-interference" code.</ref><ref></ref>

In "Dalek" (2005), the Ninth Doctor explains that his people perished along with the Dalek race in the "Last Great Time War", leaving the Doctor the last of his race.In "The Satan Pit" (2006), the Beast identifies the Tenth Doctor as "[t]he killer of his own kind.