JAK Inhibitor Dose TAPering Strategy Study

"Treatment with baricitinib 4 mg daily~* Step 1 (after randomization): baricitinib 2mg daily~* Step 2 (in case of CDAI≤ 10 AND CRP level below the laboratory standard; 6 months after starting step1): baricitinib 2mg every other day"

"Treatment with filgotinib 200 mg daily~* Step 1 (after randomisation): filgotinib 100 mg daily~* Step 2 (in case of CDAI≤ 10 AND CRP level below the laboratory standard; 6 months after starting step1): filgotinib 100mg every other day"

"Treatment with tofacitinib 5 mg twice daily or tofacitinib 11mg daily~* Step 1 (after randomisation): tofacitinib 5 mg once daily~* Step 2 (in case of CDAI≤ 10 AND CRP level below the laboratory standard; 6 months after starting step1): tofacitinib 5 mg every other day"

"Treatment with upadacitinib 15 mg daily~* Step 1 (after randomisation): upadacitinib 15 mg every other day~* Step 2 (in case of CDAI≤ 10 AND CRP level below the laboratory standard; 6 months after starting step1): upadacitinib 15 mg every 4 days"

use of JAK inhibitor at full dose until the end of the protocol

use of JAK inhibitor at full dose until the end of the protocol

use of JAK inhibitor at full dose until the end of the protocol

use of JAK inhibitor at full dose until the end of the protocol