Central Asia was an Asian region.
The ancestors of the Trojans came from Central Asia. (TV: The Myth Makers)
In the early 21st century, a Skullion ship crashed in Central Asia, where its crew were sold into slavery. (TV: The Man Who Never Was)
Uzbekistan was a nation in Central Asia. The Eighth Doctor visited the Aral Sea there in 2008, (AUDIO: Brave New Town) while the Second Doctor visited Tashkent in 1919. (AUDIO: The Memory Cheats)