Ulster centre James Hume has been added to the Ireland squad for summer tests against Japan and the USA after Leinster counterpart Garry Ringrose was ruled out due to injury.

The 22-year-old becomes the 12th uncapped player in the 37-man selection which was named on Monday.

Hume has been capped at U20 level for Ireland and has made 41 appearances in the Pro14 and Heineken Champions Cup at provincial level, scoring four tries.

His Ulster team-mates Robert Baloucoune, Tom O'Toole, Nick Timoney, as well as Caolin Blade, Tom Daly, Paul Boyle (Connacht), Harry Byrne, Peter Dooley, Ross Molony (Leinster), Gavin Coombes and Fineen Wycherley (Munster) are the other uncapped players in the Irish squad.

Ringrose, who was named in the original squad, misses out with a shoulder issue that requires a procedure.

His Leinster team-mate James Ryan will captain the side for the Aviva Stadium games on 3 and 10 July.

The games will be broadcast on RTÉ and a limited number of spectators will be allowed into the venue as part of a pilot event.