The Ulster forward sustained a hamstring injury.
Ireland prop Tom O'Toole has been ruled out of Sunday's Guinness Six Nations meeting with Italy.
The Ulster forward suffered a hamstring strain during their United Rugby Championship win over the Dragons at Rodney Parade on Sunday afternoon.
O'Toole will rehab the injury at Ulster and his progress will be reviewed over the coming weeks.
The game gets underway at 3pm.
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