MAP4K3 and systemic lupus erythematosus: In Cohort #2, 37 (46.3%) of 80 patients with SLE and 14 (16.1%) of 87 HCs harboured GLK 3′-UTR (T635C) somatic variant (>2.7% frequency); the numbers of patients with SLE and HCs who harboured GLK 3′-UTR (T635C) somatic variant in Cohort #2 were higher than those of Cohort #1.