B cell antigen receptor (BCR), membrane-bound immunoglobulin (mIg), heavy chains (IgH), light chains (IgL), transmembrane (TM), secretory immunoglobulins (sIg), immunoreceptor tyrosine-based activation motif (ITAM), B lymphoid tyrosine kinase (BLK), spleen associated tyrosine kinase (SYK), SRC homology 2 (SH2), Cbl-interacting protein of 85 kDa (SH3KBP1), B cell linker protein (BLNK), Bruton tyrosine kinase (BTK), phospholipase Cγ2 (PLCγ2), phosphatidylinositol-4,5-bisphosphate (PI(4,5)P2),