Single center study of 163 pts (mostly RA) Rx w/ tocilizumab found 41 hospitalized & 49% for serious infx. SIE were more common w/ eosinopenia (EC < 0.05 g/L; avg (0.06 vs 0.20 g/L) & low ratio EC/NC ratio (× 1000 < 11.8) (median (6.54 vs 48.50). https://t.co/88sbHBIhXt https://t.co/6wUeqSbVxx