Safety and Efficacy Study of Sivelestat in Neuromyelitis Optica Spectrum Disorder

Phase 2Not Yet RecruitingNCT07738952

Kyushu University7 enrolled

Overview

The primary objective of this study is to evaluate the safety and tolerability of sivelestat sodium hydrate administered in combination with standard steroid pulse therapy in patients experiencing an acute NMOSD attack. Safety assessments will include adverse events, laboratory parameters, vital signs, and other clinically relevant findings. In addition, the study will explore whether the addition of sivelestat sodium hydrate to standard steroid pulse therapy improves neurological outcomes in patients with acute NMOSD. Participants will receive intravenous sivelestat sodium hydrate at a dose of 4.8 mg/kg/day administered as a continuous infusion (0.2 mg/kg/hour) for 5 consecutive days, receive steroid pulse therapy according to the study protocol, and be followed for 28 days after treatment initiation for safety and efficacy evaluations.

Study Type

INTERVENTIONAL

Allocation

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Neuromyelitis Optica Spectrum Disorder Attack

Interventions

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: 1. Patients diagnosed with anti-AQP4 antibody-positive NMOSD according to the international diagnostic criteria for NMOSD (Wingerchuk, Neurology 2015). 2. Patients experiencing a relapse including any of the following, with the relapse occurring within 14 days of obtaining consent: i. Unilateral or bilateral optic neuritis ii. Myelitis 3. Patients whose FS domain has worsened by at least 1 point due to relapse. 4. Patients with one or more relapse lesions identified on MRI (however, if the relapse is considered to have occurred in the same location as an existing MRI lesion neurologically, identification of a new relapse lesion is not required). 5. Patients aged 18 years or older at the time of obtaining consent. 6. Female patients of childbearing potential who agree to use appropriate contraception from the time of obtaining consent until 180 days after the end of investigational product administration. 7. Male patients who agree to use appropriate contraception until 90 days after the end of investigational product administration. 8. Patients who can provide written informed consent. Exclusion Criteria: 1. Patients with multi-organ dysfunction involving 4 or more organs. 2. Patients with severe chronic respiratory disease. 3. Patients with autoimmune diseases other than NMOSD that are expected to require additional treatment during the study period. 4. Patients with active systemic bacterial, viral, or fungal infections. 5. Patients who have received either or both of the following prior treatments after an NMOSD relapse: i. Two or more courses of steroid pulse therapy ii. Plasmapheresis iii. High-dose immunoglobulin therapy 6. Patients with severe hepatic dysfunction. 7. Patients with alcohol dependence, drug dependence, or psychiatric disorders that would interfere with study participation. 8. Patients who have received other investigational drugs within 3 months prior to obtaining consent. 9. Pregnant women, women suspected of being pregnant, or breastfeeding women. 10. Patients with allergies to the investigational product or concomitant medications. 11. Patients with severe allergies or a history of severe allergies. 12. Patients with suicidal tendencies meeting any of the following criteria: i. Within 1 month prior to the screening assessment, there was suicidal behavior or ideation corresponding to "Yes" for Item 4 (Active suicidal ideation -some intent to act, but no specific plan) or Item 5 (Active suicidal ideation -specific plan and intent) of the Columbia-Suicide Severity Rating Scale (C-SSRS). (For subjects who only met Items 1-3, inclusion may be permitted at the discretion of the principal investigator or sub-investigator.) ii. Any suicidal behavior based on Item 6 of the C-SSRS occurred within the past 3 months. 13. Other patients judged inappropriate by the principal investigator or sub-investigator.

Outcomes

Primary Outcomes

Incidence of adverse events

Time frame: 4 weeks

Secondary Outcomes

Change from baseline in body temperature at 3 hours, Day 2, Day 3, Day 4, Day 5, and Day 6 after the start of investigational product administration.

Time frame: 6 days

Change from baseline in blood pressure at 3 hours, Day 2, Day 3, Day 4, Day 5, and Day 6 after the start of investigational product administration.

Time frame: 6 days

Change from baseline in pulse rate at 3 hours, Day 2, Day 3, Day 4, Day 5, and Day 6 after the start of investigational product administration.

Time frame: 6 days

Change from baseline in percutaneous arterial oxygen saturation at 3 hours, Day 2, Day 3, Day 4, Day 5, and Day 6 after the start of investigational product administration.

Time frame: 6 days

Change from baseline in Expanded Disability Status Scale (EDSS) score at 4 weeks (Day 28).

The Expanded Disability Status Scale (EDSS) ranges from 0 to 10. Higher scores indicate greater neurological disability and worse clinical status.

Time frame: 4 weeks

Proportion of cases where Expanded Disability Status Scale (EDSS) score improved by 1 point or more from baseline at 4 weeks (Day 28).

The Expanded Disability Status Scale (EDSS) ranges from 0 to 10. Higher scores indicate greater neurological disability and worse clinical status.

Time frame: 4 weeks

Change from baseline in Functional System (FS) domain scores at 4 weeks

Functional System (FS) scores are neurological disability scores that contribute to the Expanded Disability Status Scale (EDSS). Functional systems assessed include visual, brainstem, pyramidal, cerebellar, sensory, bowel and bladder, and cerebral functions. Individual FS scores generally range from 0 (normal function) to 5 or 6 (maximal impairment), depending on the functional system assessed. Higher scores indicate greater neurological impairment and worse clinical status.

Time frame: 4 weeks

Change from baseline in Opticospinal Impairment Scale (OSIS) score at 4 weeks (Day 28).

The Opticospinal Impairment Scale (OSIS) is a disability scale for neuromyelitis optica spectrum disorder that assesses visual acuity, motor function, sensory function, and sphincter function. Total scores range from 0 to 25, with higher scores indicating greater neurological impairment and worse clinical status.

Time frame: 4 weeks

Proportion of participants with recovery to pre-relapse neurological disability status at 4 weeks (Day 28).

Recovery to pre-relapse neurological disability status is defined as a return of the Expanded Disability Status Scale (EDSS; range 0-10, higher scores indicate greater disability) and the Opticospinal Impairment Scale (OSIS; range 0-25, higher scores indicate greater neurological impairment) to their respective pre-relapse scores.

Time frame: 4 weeks

Change from baseline in best-corrected visual acuity at 4 weeks (Day 28)

Time frame: 4 weeks

Change from baseline in critical flicker fusion frequency at 4 weeks (Day 28).

Time frame: 4 weeks

Change from baseline in retinal nerve fiber layer and ganglion cell-inner plexiform layer thickness measured by optical coherence tomography (OCT) at 4 weeks (Day 28).

Time frame: 4 weeks

Proportion of cases with gadolinium-enhancing lesions on MRI at 4 weeks.

Time frame: 4 weeks

Proportion of cases requiring a second course of steroid pulse therapy, plasmapheresis, or high-dose immunoglobulin therapy.

Time frame: 4 weeks

Safety and Efficacy Study of Sivelestat in Neuromyelitis Optica Spectrum Disorder

Overview

Conditions

Interventions

Eligibility

Outcomes

Primary Outcomes

Secondary Outcomes

Central Contacts