Rheumatoid arthritis

The MIDORA trial: a phase II, randomised, double-blind, placebo-controlled, mechanistic insight and dosage optimisation study of the efficacy and safety of dazodalibep in patients with rheumatoid arthritis

RMD OpenPublished Randomised controlled trial

An erratum to this article was published (RMD Open, 19 Dec 2023 ↗)

Authors' conclusion

DAZ treatment for all dosage regimens significantly reduced DAS28-CRP at day 113 relative to PBO.

Study context

Population
Adults with moderate-to-severe active rheumatoid arthritis (RA), RF and/or ACPA positive, inadequate response to MTX, other csDMARDs or TNFi, no prior B-cell depleting agentsrandomised equally to five groups
Participants
78 adults
Comparison
Four dosing regimens of IV dazodalibep vs placebo
Primary endpoint
Change from baseline in DAS28-CRP
Follow-up
Day 113
Methodological detailsphase II, double-blind, placebo-controlled, dosage optimisation, Participants followed through day 309
  • Phase II
  • Double-blind
  • Placebo-controlled
  • Dosage optimisation
  • Participants followed through day 309

Primary result

As reported in the abstract

Change from baseline in DAS28-CRP (least squares means±SE)

Dazodalibep (DAZ)

−1.83 to −1.90

least squares mean · SE 0.28–0.27

PBO

−1.06

least squares mean · SE 0.26

P < 0.05

Further findings

DAS28-CRP reduction · day 309

Significant reductions in DAS28-CRP observed for all DAZ groups

Safety

Adverse events · generally balanced

Serious adverse events

Serious adverse events, deemed unrelated to study medication
4

Original publication

The MIDORA trial: a phase II, randomised, double-blind, placebo-controlled, mechanistic insight and dosage optimisation study of the efficacy and safety of dazodalibep in patients with rheumatoid arthritis. RMD Open. Published 4 August 2023. doi:10.1136/rmdopen-2023-003317

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