Dabirsim, Europe's champion two-year-old in 2011, is to be retired to stud.
French trainer Christophe Ferland and owner Simon Springer have called time on the colt's career because of a recurring foot problem that has seen him sidelined since the French 2000 Guineas last May.
The Hat Trick colt won all his five races as a juvenile, culminating in two Group Ones, the Prix Morny and the Jean-Luc Lagardere when he was ridden by Frankie Dettori, but he was beaten in both his starts as a three-year-old. Short headed on his seasonal debut, he suffered trouble in running in the French Guineas and was sixth.
"The horse is not as well as I had hoped so we decided with the owner that we would stop his career and send him to stud. We don't know which stud yet," said Ferland.
"The best (moments) would be the two Group Ones he won. The Prix Morny because it was my first Group One and the Prix Jean Luc-Lagardere because a furlong before the winning post, he was only fifth and I thought we had trouble in the race and had enormous problems.
"When he found the gap, in one furlong he quickened up and took first place. I was very happy. Things did not go right last year. Christophe Soumillon did not get on with the horse. He was beaten in a Group Three but that was not too bad because it was his first time out that season.
"Then in the French Guineas he got stopped on the inside, but was still very close to the winner, less than a length behind. It's a shame he did not run again, but it is the best for the horse. He has had a foot problem.
"He was the best two-year-old in Europe and he proved he can stay a mile because he did that in the French Guineas. He was fine this winter. I could have run him, but I think it would have been difficult to fly him to race somewhere in the world.
"I hope he's going to have a good career at stud."