A Study to Evaluate the Efficacy, Safety, and Tolerability of Rozanolixizumab in Adult Study Participants With Persistent or Chronic Primary Immune Thrombocytopenia (ITP) (myOpportunITy1)
Primary Immune Thrombocytopenia
About this trial
This is an interventional treatment trial for Primary Immune Thrombocytopenia focused on measuring ITP, UCB7665, Rozanolixizumab, Primary immune thrombocytopenia
Eligibility Criteria
Inclusion Criteria:
- Study participant must be ≥18 years of age at the time of the Screening Visit
- Study participant has a diagnosis of persistent (>3 months duration) or chronic (>12 months duration) primary immune thrombocytopenia (ITP) at the Screening Visit
- Study participant has a documented intolerance or insufficient response to two or more appropriate standard of care ITP treatments prior to Screening
- Study participants must have prior history of a response to a previous ITP therapy
- If taking allowed drugs, study participant must be on stable doses during defined time periods prior to Baseline (Day 1)
- Study participant has a documented history of low platelet count (<30×10^9/L) prior to Screening
- Study participant has a platelet count measurement at Screening and at Baseline (Day 1) with an average of the two <30×10^9/L and no single count may be >35×10^9/L (using local laboratories)
- Study participant has a current or history of a peripheral blood smear consistent with ITP
Study participants may be male or female:
- A male participant must agree to use contraception during the Treatment Period and for at least 3 months after the final dose of study treatment and refrain from donating sperm during this period
- A female participant is eligible to participate if she is not pregnant as confirmed by a negative serum pregnancy test and not planning to get pregnant during the participation in the study, not breastfeeding, and at least one of the following conditions applies:
Not a woman of childbearing potential (WOCBP) OR A WOCBP who agrees to follow the contraceptive guidance during the Treatment Period and for at least 3 months after the dose of study treatment
Exclusion Criteria:
- Participant has a history of arterial or venous thromboembolism (eg, stroke, transient ischemic attack, myocardial infarction, deep vein thrombosis or pulmonary embolism) within the 6 months prior to randomization or requires current anticoagulant treatment
- Study participant has clinically significant bleeding that warrants immediate platelet adjustment (eg, menorrhagia with significant drop in hemoglobin)
- Study participant has a known hypersensitivity to any components of the study medication or any other anti-neonatal Fc receptor (FcRn) medications
- Study participant has evidence of a secondary cause of immune thrombocytopenia (clear association with other medical conditions, eg, untreated H. pylori infection, leukemia, lymphoma, common variable immunodeficiency, systemic lupus erythematosus, autoimmune thyroid disease or is drug induced), participant has a multiple immune cytopenia (eg, Evan's syndrome)
- Study participant has a clinically relevant active infection (eg, sepsis, pneumonia, or abscess) in the opinion of the investigator, or had a serious infection (resulting in hospitalization or requiring parenteral antibiotic treatment) within 6 weeks prior to the first dose of investigational medicinal product (IMP)
- Study participant with a known tuberculosis (TB) infection, at high risk of acquiring TB infection, or latent tuberculosis infection (LTBI), or current/history of nontuberculous mycobacterial infection (NTMBI)
- Study participant has a history of a major organ transplant or hematopoietic stem cell/marrow transplant
- Study participant has experienced intracranial bleed in the last 6 months prior to the Screening Visit
- Study participant has a history of coagulopathy disorders other than ITP
- Study participant with current or medical history of immunoglobulin A (IgA) deficiency, or a measurement of IgA <50 mg/dL at the Screening Visit
- Study participant has undergone a splenectomy in the 2 years prior to the Baseline Visit
Sites / Locations
- Tp0003 50244
- Tp0003 40188
- Tp0003 40197
- Tp0003 40196
- Tp0003 20050
- Tp0003 40558
- Tp0003 40202
- Tp0003 40178
- Tp0003 40204
- Tp0003 40208
- Tp0003 20030
- Tp0003 20039
- Tp0003 20159
- Tp0003 20218
- Tp0003 20207
- Tp0003 20051
- Tp0003 40218
- Tp0003 40221
- Tp0003 40222
- Tp0003 40226
- Tp0003 40225
- Tp0003 20055
- Tp0003 20099
- Tp0003 20060
- Tp0003 20062
- Tp0003 20063
- Tp0003 20100
- Tp0003 40238
- Tp0003 40234
Arms of the Study
Arm 1
Arm 2
Experimental
Placebo Comparator
Rozanolixizumab
Placebo
Study participants randomized to this arm will receive fixed-unit doses of rozanolixizumab across body weight tiers at pre-specified time points during the Treatment Period. Doses will be adjusted based on platelet count values or medical needs.
Study participants randomized to this arm receive placebo at pre-specified time points during the Treatment Period.