TNFRSF9 and angioimmunoblastic T-cell lymphoma: Liver Treg also expressed higher levels of the TNF receptor superfamily members CD137, OX40 and GITR than peripheral Treg, and comparing our current data in peripheral blood with our previous phenotyping of intrahepatic Treg in AILD we identify that CD69 (40%), LAG3 (20%), Tim3 (5%) and cytolytic granzyme B (5%) are also all up‐regulated on Treg in the liver compared to periphery (< 5% in peripheral blood) 4.