RT Journal A1 Kuehn BM T1 NEw inflammatory disorder JF JAMA JO JAMA YR 2009 FD July 22 VO 302 IS 4 SP 375 OP 375 DO 10.1001/jama.2009.1049 UL http://dx.doi.org/10.1001/jama.2009.1049 AB The protein product of IL1RN inhibits IL-1, and unchecked IL-1 causes life-threatening inflammation in these patients, according to the scientists. Five of 6 surviving patients treated with anakinra, a recombinant IL-1–receptor antagonist, experienced remission; the patient who did not respond to the drug had chromosomal deletions that included IL1RN, the authors report.