What this phase means
Phase 4: the treatment is already approved. This study asks new questions — longer-term effects, other diseases, or how it compares in everyday care.
Phase labels are FDA/ICH categories applied to the registry Phase field. They are not a finding that this study succeeded.
What the registry says happens
If you join, the listed intervention(s) are Herpes Zoster Subunit (HZ/su) Vaccine, or Placebo. The registry lists allocation as randomized. This randomly assigned, neither you nor the study doctors know who gets the real treatment, compared with a dummy treatment, non-inferiority crossover study will measure the Herpes Zoster Sunbit (HZ/su) vaccine in SLE patients in order to evaluate safety and immunogenicity in patients with variable baseline clinical activities, ages and immunosuppressant exposures.
They plan to enroll about 224 people at 2 sites. Taking part typically means an infusion or injection of a biologic plus check-ins.
Official title (unrewritten)
A Multicenter, Randomized, Double-Blind, Placebo-Controlled, Non-inferiority Crossover Study Evaluating the Safety and Immunogenicity of the Herpes Zoster Subunit Vaccine in Patients With Systemic Lupus Erythematosus
Interventions: Herpes Zoster Subunit (HZ/su) Vaccine, Placebo
Primary outcome (registry wording): Occurrence of either Moderate or Severe Lupus Flares within 24 Weeks of First Dosing with HZ/su Vaccine