It seems so simple. We should be able to use proteomics to better pick winners when it comes to b/tsDMARDs in RA. Why is it hard? I guess: - theory ≠ practice - too many other factors - it's too easy not to Yet I hope/believe, one day we'll do better. #ACR23 ABST0427 @RheumNow https://t.co/5VBVp3KOJN