The decision to retire Uncle Mo was made Sunday after blood tests showed that one of his enzymes, gamma-glutamyltransferase (GGT), was elevated. This is the same enzyme that was elevated in the spring – knocking Uncle Mo out of the Triple Crown series – and led to the diagnosis of the liver disease, cholangiohepatitis. Uncle Mo does not have a recurrence of that disease, but the GGT level was the highest it’s been since the colt returned to trainer Todd Pletcher’s care in July, Repole said. A normal GGT level is under 35, Uncle Mo’s was “significantly higher” following the Classic, Repole said.
“We don’t want to continue down this road where he’s going to get ill again,” Repole said Monday morning. “The vets did say that the stress and rigors of training could always bring about this elevated GGT.”
I wish him the best, but I think he was far from the most impressive, brief runners in recent years. Too much hype to live up to perhaps.