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Taking people in GermanyPhase 1

Phase IB open label, long-term, extension basket trial of RAY121 to inhibit classical complement pathway in immunological diseases (RAINBOW-LTE trial)

Key facts

Who runs it
Chugai Pharmaceutical Co. Ltd.
Where
Dresden, Erlangen, Goettingen, Luebeck, Rüdersdorf, and Tuebingen, GermanySee the 6 sitesAlso in 13 other countries, 31 sites
Status
Recruiting
Phase
Phase 1
People taking part
78 people, planned
Started
28 Mar 2025
Expected to end
28 Dec 2026
Type of study
Interventional
Record updated
2 November 2026

Who can take part

Age
18 years and older
Sex
Women and men
Healthy volunteers
Cannot take part

Where in Germany

Also in 13 other countries, 31 sites

  • Technische Universitaet DresdenDresden, GermanyTaking people
  • Universitaetsklinikum Erlangen AöRErlangen, GermanyTaking people
  • Universitaetsmedizin GoettingenGoettingen, GermanyTaking people
  • Universitaetsklinikum Schleswig-Holstein AöRLuebeck, GermanyTaking people
  • Immanuel Klinik RuedersdorfRüdersdorf, GermanyTaking people
  • Universitaetsklinikum Tuebingen AöRTuebingen, GermanyTaking people

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?

Contact the study team: see the registry record

Print a page for my doctor

Data and sources

Registry record
Listed on the EU's official list of trials (CTIS).
Record updated
2 November 2026