User blog comment:Warl0rd13/Kotor VS Mass Effect Round 2, Assassins: Thane Krios VS Sith Assassins./@comment-4555900-20120412195614/@comment-26074921-20120412201502

Even with Kepral's syndrome he still managed to keep in great fighting strength nearing the end of his life in ME2 and by ME3 he was still capable of remarkable bursts of strength/skill despite the pain.

For those who don't know, it's not that the disease isn't serious, but rather a testament to Thane's will which just shows how awesome he is.