Synovial T cells from 20 pts Rx w/ immune checkpoint inhibitors who developed ICI-arthritis compared w/ synovial T cells from RA & PsA pts - showing clonal expansion of activated effector CD38hi,CD127−, CD8 T cells, w/ incr type I IFN-assoc transcripts https://t.co/vw2sOGL6jQ https://t.co/uDlt9dH4mQ