Mutation | Number of cases | Phenotype | Treatment | Outcomes | Reference number |
---|---|---|---|---|---|
c.1840C > T, p.R614W (homozygous) | 1 | SLE –like with lymphoproliferation | Corticosteroids and rapamycin | Reduction in size of lymph nodes and resolution of hepatosplenomegaly, transaminitis and ongoing acute phase response | [26] |
G510S/G510S | 3 | SLE-like, lymphoproliferation and recurrent infections | Corticosteroids in all; Various DMARDS in 2 Rituximab in 1 | Relapsing course in 2 cases; death age 13 in 1 case (septic shock) | |
c.1352 + 1G > A | 1 | SLE-like and recurrent infections | Corticosteroids; Various DMARDs; rituximab; immunoglobin replacement | Good response | [28] |
c.742G > A, p.Gly248Ser | 1 | SLE-like, CMV infection | Oral hydroxychloroquine; antibiotic and IVIG prophylaxis | Good response | [29] |
c.1294G > T; p.Gly432Trp (homozygous) | 3 | SLE-like (see main text); severe haematological involvement in all 3; acute tubulointerstitial nephritis in 1 | high dose corticosteroids in all 3; various DMARDS in 2; rituximab in 3; ofatumumab in 2 | Good response to rituximab in all 3, but severe infusion reactions in 2 cases. Good response to ofatumumab in 2 cases | [4], and this report |