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A study to test the efficacy, safety, and pharmacokinetics of rozanolixizumab in adult study participants with Leucine-Rich Glioma Inactivated 1 Autoimmune Encephalitis

A Randomized, Double-Blind, Placebo-Controlled, Multicenter, Phase 2 Study to Evaluate the Efficacy, Safety, and Pharmacokinetics of Rozanolixizumab in Adult Study Participants With Leucine-Rich Glioma Inactivated 1 Autoimmune Encephalitis

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2019-004778-25-DE
Enrollment
68
Registered
2021-01-18
Start date
2021-06-08
Completion date
Unknown
Last updated
2024-05-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Leucine-Rich Glioma Inactivated 1 Autoimmune Encephalitis MedDRA version: 20.0 Level: PT Classification code 10072378 Term: Encephalitis autoimmune System Organ Class: 10029205 - Nervous system disorders

Interventions

Product Name: Rozanolixizumab Product Code: UCB7665 Pharmaceutical Form: Solution for infusion INN or Proposed INN: Rozanolixizumab CAS Number: 1584645-37-3 Current Sponsor code: UCB7665 Other descrip

Sponsors

UCB Biopharma SRL
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: -Study participant must be =18 to =89 years of age -Study participant must be seropositive for leucine-rich glioma inactivated 1 (LGI1) antibody - Study participant must have =2 seizures/week during the Screening Period or have experienced such seizures that stopped following high dose corticosteroids (500 to 1000 milligram (mg) methylprednisolone (MP) equivalent/day): • Either faciobrachial dystonic seizures (FBDS) with or without other focal (partial) seizures including focal to bilateral tonic clonic • Or focal (partial) seizures including focal to bilateral tonic clonic and fulfil the following newonset Autoimmune encephalitis (AIE) criteria -Study participant has initiated or re-initiated corticosteroids at a dose of 500 to 1000 mg MP equivalent/day within 42 days prior to randomization. Participants re-initiating corticosteroids are eligible only if re-initiation is due to seizure rebound and within the timeframe outlined. If the study participant has initiated a steroid taper, the study participant cannot receive an oral steroid dose lower than 40mg/day when randomized -Study participant with onset of disease symptom between 0 to 12 months prior to Screening, per investigator's assessment. -Study participant weighs at least 35 kg at Screening -A female participant is eligible to participate if she is not pregnant, not breastfeeding, and at least one of the following conditions applies: i) Not a woman of childbearing potential (WOCBP) OR ii) A WOCBP who agrees to follow the contraceptive guidance during the treatment period and for at least 90 days after the final dose of study treatment Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 18 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 50

Exclusion criteria

Exclusion criteria: -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 a confirmed prior diagnosis of epilepsy or new onset seizures that are unrelated to LGI1 autoimmune encephalitis (AIE) or has any known or suspected medical cause for the onset of seizures other than possible AIE -Study participant has a known active neoplastic disease or history of neoplastic disease within 5 years of study entry -Study participant has renal impairment, defined as glomerular filtration rate (GFR) 3x upper limit of normal (ULN) -Study participant has a total IgG level =5.5 g/L at the Screening Visit -Study participant has absolute neutrophil count <1500 cells/mm^3 at the Screening Visit

Design outcomes

Primary

MeasureTime frame
Main Objective: Assess the efficacy of rozanolixizumab as measured by seizure freedom;Secondary Objective: -Assess the efficacy of rozanolixizumab as measured by a change in cognitive function -To assess the efficacy of rozanolixizumab on study participants' overall disability -Assess the efficacy of rozanolixizumab as measured by use of rescue medication -Assess the efficacy of rozanolixizumab as measured by the onset of seizure freedom -Assess the safety and tolerability of rozanolixizumab ;Primary end point(s): Proportion of seizure free study participants at the end of the Treatment Period;Timepoint(s) of evaluation of this end point: From Baseline until the end of Treatment Period (Week 25)

Secondary

MeasureTime frame
Secondary end point(s): 1. Change from Baseline in Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) total scale index score at the end of the Treatment Period 2. Proportion of participants with a favorable outcome in the Modified Rankin Scale (mRS) during the Treatment Period 3. Proportion of participants who required rescue medication due to an absence or loss of clinical benefit during the Treatment Period 4. Time to first occurrence of seizure freedom during the Treatment Period 5. Incidence of Treatment-Emergent Adverse Events (TEAEs);Timepoint(s) of evaluation of this end point: 1-4: From Baseline until the end of the Treatment Period (Week 25) 5: From Baseline until the End of Study Visit (Week 32)

Countries

Australia, Belgium, Denmark, France, Germany, Italy, Korea, Republic of, Netherlands, Portugal, Spain, Sweden, Turkey, Ukraine, United Kingdom, United States

Contacts

Public ContactClin Trial Reg & Results Disclosure

UCB BIOSCIENCES GmbH

clinicaltrials@ucb.com

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026