Abe Lincoln's possible genetic defect discovered

Researchers who studied descendants of Abraham Lincoln's family have discovered a genetic defect that may have been the cause of Lincoln's gait. The dominant genetic mutation causes spinocerebellar ataxia type 5, a degenerative neurological disorder that affects coordination, including walking, speaking and swallowing. It was previously thought that Lincoln may have had Marfan's Syndrome. Here is the article.

While this is an interesting study of the past, it has some haunting implications for our future. I can sum it up with this question:

If Lincoln, one of the greatest Presidents in U.S history, was conceived in our age of pre-implantation genetic diagnosis (PGD) and pre-natal genetic testing, would he have been aborted or tossed out as a "defective" embryo?