TGM2 and chronic kidney disease: TG2 was also measured in serum samples from a subset of 130 patients with CKD (DKD n = 58, CGN n = 24, HTN n = 23, ARVD n = 8, CIN n = 5, ADPKD n = 4, other n = 8) and 10 HVs in order to compare levels in the circulation with urine excretion.