Sjögren's disease & overlap diseases

Efgartigimod in Sjögren’s disease: a phase 2, randomised, placebo-controlled, parallel-group, double-blinded, proof-of-concept study (RHO)

Ann Rheum DisPublished Randomised controlled trial

Primary result · CRESS response on ≥3 itemsResult — go to the resultTreatment difference 34.4%

Authors' conclusion

Data from the RHO study support proof of concept for efgartigimod in SjD.

Study context

Population
Adults with Sjögren's disease (SjD)31 in efficacy analysis
Participants
34 adults
Comparison
Efgartigimod intravenous (IV) 10 mg/kg once weekly for 24 weeks vs placebo
  • Efgartigimodn = 23
  • Placebon = 11reference
Primary endpoint
Proportion of CRESS responders on ≥3 of 5 items (systemic disease activity, patient-reported symptoms, tear and salivary gland function, serology)
Follow-up
Week 24
Methodological detailsphase 2, proof-of-concept, double-blinded, placebo-controlled, multicentre, parallel-group, 2:1 randomisation, no formal statistical hypothesis tested
  • Phase 2
  • Proof-of-concept
  • Double-blinded
  • Placebo-controlled
  • Multicentre
  • Parallel-group
  • 2:1 randomisation
  • No formal statistical hypothesis tested

Primary result

CRESS response on ≥3 items

Treatment difference

34.4%

By group

As reported in the abstract

Secondary outcomes

cSTAR score ≥5 · week 24 · numerically higher

Safety

Treatment-emergent adverse events

  • Treatment-emergent adverse events: all grade 1 or 2 in severity

Original publication

Efgartigimod in Sjögren’s disease: a phase 2, randomised, placebo-controlled, parallel-group, double-blinded, proof-of-concept study (RHO). Ann Rheum Dis. Published 16 April 2026. doi:10.1016/j.ard.2026.03.019

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