Systemic sclerosis & Raynaud's

A phase 2 randomized trial of safety and pharmacokinetics of IgPro20 and IgPro10 in patients with diffuse cutaneous systemic sclerosis

Rheumatology (Oxford)Published Randomised controlled trial

Authors' conclusion

This study shows that in patients with dcSSc, safety, pharmacokinetic and bioavailability profiles of IgPro20, and safety and pharmacokinetics of IgPro10, are similar to those observed in other approved indications.

Study context

Population
Adults (aged ≥18 years) with dcSSccrossover
Participants
27 adults
Comparison
IgPro20 16 weeks followed by IgPro10 16 weeks, or vice versa
Primary endpoint
Safety of s.c. immunoglobulin IgPro20
Methodological detailsphase 2, prospective, multicentre, open-label, crossover
  • Phase 2
  • Prospective
  • Multicentre
  • Open-label
  • Crossover

Primary result

As reported in the abstract

TEAEs

IgPro20

49

events

IgPro10

58

events

Patients with treatment-emergent adverse events (TEAEs) (107 TEAEs in total); most mild/moderate
22 (81.5%)

Secondary outcomes

Maximum IgG concentration

Geometric mean dose-normalized, baseline-corrected AUC from 0 to tau

  • Maximum IgG concentration: numerically lower following IgPro20

Bioavailability of IgPro20 relative to IgPro10

Relative bioavailability
76.1%

Safety

Events

OutcomeIgPro20IgPro10
SAEsCounts are SAEs, not patients64
Serious adverse events (SAEs) — Patients with SAEs (10 SAEs in total)
6 (22.2%)
SAEs — Treatment-related SAEs
0
SAEs — Deaths
0

Infusion site reactions (ISRs) with IgPro20

ISR rate (low)
2 per 100 infusions

Original publication

A phase 2 randomized trial of safety and pharmacokinetics of IgPro20 and IgPro10 in patients with diffuse cutaneous systemic sclerosis. Rheumatology (Oxford). Published 5 February 2025. doi:10.1093/rheumatology/keaf066

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