Quorto has suffered a setback and will miss the 2,000 Guineas at Newmarket in May.
The son of Dubawi was last seen winning the G1 National Stakes at the Curragh last September during an undefeated juvenile campaign.
Trainer Charlie Appleby said, "Unfortunately Quorto has suffered a soft tissue injury in training in Dubai which will mean he will have to miss the 2,000 Guineas.
"It's a real shame as we had high hopes for him this year. We'll know more when he's scanned for a second time in a couple of weeks."
He added: "It's too early to say when he could be back in action but we've been here before with these injuries and we'll see how he recovers."