Analysis of BCR signaling activation kinetics following sIgM or sIgD stimulation in CLL cells.
B cells isolated from CLL patients and stimulated with either soluble anti-IgM or anti-IgD and level of HS1 activating tyrosine (Y)397 phosphorylation analyzed.
Ibrutinib affects BCR signaling activation kinetics.
sIgM stimulation of CLL cells promotes protracted activation of BCR signaling.
Effect can be inhibited by ibrutinib.