Ireland will miss the services of Munster lock Tadhg Beirne in the opening two rounds of the upcoming Six Nations tournament following a knee injury.
The 27-year-old suffered the blow in the recently concluded Heineken Champions Cup game against Exeter Chiefs where he left the field in the 67th minute.
Meanwhile, Connacht lock Quinn Roux, who helped his club to 27-33 win over Bordeaux Begles has been recalled in the squad.
Andrew Conway also missed out of the training camp after having a tight adductor. He will stay with his club Munster for further rehabilitation but is expected to be available for the tournament opener. Leinster wing Adam Byrne has been added as cover for Conway.
Rob Kearney and Jack McGrath will feature for Leinster in the upcoming Pro 14 clash against Scarlets to get some game time before joining the Ireland squad.
Ireland will kick-start the Six Nations 2019 campaign with a clash against England at Aviva Stadium in Dublin on 2nd February.