Table 2. ERA PB phospho-signaling is distinguished from OA PB in the CD4+ and CD20+ cell populations.

Phospho-signaling effector	CD4+*	CD8+*	CD20+*
p-AKT	50%	0%	40%
p-BTK	50%	0%	40%
p-CBL	60%	0%	40%
p-JNK	50%	0%	0%
p-PLCγ	60%	0%	40%
p-STAT1	50%	0%	40%
p-STAT3	40%	0%	0%
p-STAT6	40%	0%	40%
p-ZAP70	50%	0%	40%

^*Percentage of ERA patients with MFI values ≥10% above the maximum level recorded in the OA patient cohort is denoted.