6.6% Risk of Late-onset Neutropenia (ANC<1000) in a single center study of 738 Rx w/ Rituximab (107 LON in 71 patients). Incidence was 7.2/100PYs. Higher risk w/ SLE or CTX Rx. 40% had Sxs, Fever 31%, sepsis in 8.5%. Rechallenge in 87% & 21% recurrent LON https://t.co/XXFV1lH9jS