Table 1.

Major clinical features of 3 patients with immunodeficiency and immune dysregulation

P1P2P3
Immunodeficiency    
 Recurrent respiratory tract infections ++ ++ 
 Bronchiectasis ++ ++ 
 Herpes viral infection ++ 
Lymphoproliferation    
 Lymphadenopathy 
 Hepatosplenomegaly 
 Lymphoma 
Autoimmunity    
 Autoimmune cytopenias − 
 Autoantibodies − 
Laboratory values    
 Class-switched memory B cells    
 FasL-mediated apoptosis ↓ ↓ Normal 
 Soluble FasL ↑ ↑ Normal 
 DNTs ↑ ↑/Normal  
 Specific antibodies Normal ND  
Developmental delay    
 Moderate 
Outcome of HSCT    
 Autologous T-cell reconstitution 
Split mixed chimerism Rejected and died Rejected and died 
P1P2P3
Immunodeficiency    
 Recurrent respiratory tract infections ++ ++ 
 Bronchiectasis ++ ++ 
 Herpes viral infection ++ 
Lymphoproliferation    
 Lymphadenopathy 
 Hepatosplenomegaly 
 Lymphoma 
Autoimmunity    
 Autoimmune cytopenias − 
 Autoantibodies − 
Laboratory values    
 Class-switched memory B cells    
 FasL-mediated apoptosis ↓ ↓ Normal 
 Soluble FasL ↑ ↑ Normal 
 DNTs ↑ ↑/Normal  
 Specific antibodies Normal ND  
Developmental delay    
 Moderate 
Outcome of HSCT    
 Autologous T-cell reconstitution 
Split mixed chimerism Rejected and died Rejected and died 

+, feature present; ++, major feature; −, feature absent; ↓, lower than normal; ↑, higher than normal; ND, not determined.

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