Follow-up. The plot shows the follow-up of the study cohort sorted according to the genetic variants. The y-axis displays patient IDs, and the x-axis displays the time since birth in months. At the last follow-up (median, 192 months; range, 6-804), 31 patients were alive. One patient died at age 5 years due to pancolitis with sepsis. Six patients received alloHSCT. No alloHSCT-related mortality was reported (median follow-up after alloHSCT, 91.5 months; range, 9-147). Pat, patient.