The Steelers made Gilbert inactive for Thursday night's game against Carolina. Matt Feiler will start in place of Gilbert.
Pittsburgh will also be without reserve nose tackle Dan McCullers, who is dealing with an ankle injury. Quarterback Mason Rudolph, wide receiver Justin Hunter, safety Marcus Allen, cornerback Brian Allen and offensive lineman Zach Banner are also inactive for the Steelers.
Carolina center Ryan Kalil will play despite skipping practice on Tuesday with an ankle injury.
Cornerback Josh Hawkins, running back Cameron Artis-Payne, linebacker Andre Smith, guard Brendan Mahon, defensive end Bryan Cox Jr. and defensive end Marquis Haynes are also inactive for the Panthers.
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