AID	Activation-induced cytidine deaminase
APDS	Activated PI3 kinase delta syndrome
A-T	Ataxia telangiectasia
ATM	Ataxia telangiectasia mutated
CD40L	CD40 ligand
CMV	Cytomegalovirus
CSR	Class switch recombination
DOCK	Dedicator of cytokinesis
EBV	Epstein–Barr virus
HBV	Hepatitis B virus
HCV	Hepatitis C virus
HIGM	Hyper IgM
HSCT	Hematopoietic stem cell transplantation
IVIG	Intravenous immunoglobulin
LPD	Lymphoproliferative disorders
LRBA	Lipopolysaccharide-responsive beige-like anchor
MALT	Mucosa-associated lymphoid tissue
mAb	Monoclonal antibodies
NBS	Nijmegen breakage syndromes
NEMO	Nuclear factor κappa B essential modulator
NF-κB	Nuclear factor κappa B
NGS	Next generation sequencing
NHEJ	Non-homologous end joining
NH Lymphoma	Non-Hodgkin lymphoma
PBMCs	Peripheral blood mononuclear cells
PCR	Polymerase chain reaction
PIDs	Primary immunodeficiencies
PMS2	Post-meiotic segregation 2
RAG2	Recombination-activating gene 2
SHM	Somatic hypermutation
UNG	Uracil DNA glycosylase
VUS	Variant of unknown significance
WES	Whole exome sequencing
WHIM	Warts, hypogammaglobulinemia, infections, myelokathexis
XLP1	X-linked lymphoproliferative syndrome type 1