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MN-166

Phase 2

Amyotrophic Lateral Sclerosis | Small molecule | Neurology |MediciNova, Inc.|Last Updated: Mar 6, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials2
Total Enrollment304
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04057898Evaluation of MN-166 (Ibudilast) for 12 Months Followed by an Open-label Extension for 6 Months in Patients With ALSPHASE2 ACTIVE NOT_RECRUITING 234May 28, 2020Apr 1, 2028Mar 6, 202616 United States, Canada
NCT02238626Ibudilast (MN-166) in Subjects With Amyotrophic Lateral Sclerosis (ALS)PHASE2 COMPLETED 70Sep 1, 2014Dec 1, 2017Nov 5, 20211 United States
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Study Endpoints
Primary Endpoints
Change from baseline in ALSFRS-R score at Month 12 (or last measurement before death in case of censoring) and survival time.
12 months

The amyotrophic lateral sclerosis functional rating scale-revised, or ALSFRS-R, measures the functional status of subjects with ALS. It is based on 12 items, each of which is rated on a 5-point scale (0 to 4). The rate of total functional disability thus ranges from 0 (maximum disability) to 48 (normal function) points.

Safety and Tolerability of MN-166 60 mg/d Versus Placebo When Administered With Riluzole in Subjects With ALS
6 months

Safety will be assessed by monitoring and recording all treatment-emergent adverse events (TEAEs) including serious adverse events (SAEs) and discontinuations due to TEAEs and Additional assessments will include regular monitoring of hematology, blood chemistry, and urine values, regular measurement of vital signs, ECGs, medical history, physical and neurological examinations.

Secondary Endpoints
Mean change from baseline of muscle strength measured by hand-held dynamometry
Baseline, Treatment Phase Week 6, Months 3, 6, 9 and12 time points.
Mean change from baseline on quality of life assessed by ALSAQ-5 at Month 12
12 months
Mean change from baseline of functional activity measured by ALSFRS-R at Month 12
12 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
MN-166EXPERIMENTALSubjects will take MN-166 10 mg capsules, up to 50 mg twice a day for 12 months.
placeboPLACEBO_COMPARATORSubjects will take up to 5 matching placebo capsules twice a day for 12 months.
Placebo (for MN-166)PLACEBO_COMPARATORSugar pill manufactured for MN-166 10 mg tablets plus 50 mg riluzole by mouth twice daily for 6 months.
Interventions
NameTypeDescription
MN-166DRUGSubjects will take MN-166 for 12 months followed by a 6-month open-label extension phase.
placeboDRUGSubjects will take matching placebo for 12 months followed by a 6-month open-label extension phase.
Placebo (for MN-166)DRUG -
riluzoleDRUGPatient is given 50 mg riluzole twice daily.
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Eligibility Criteria
Age Range18 Years — 80 Years
SexALL
Healthy VolunteersNo
Study Sites16

Major Inclusion Criteria: * Male or female subjects age 18 - 80 years, inclusive; * Diagnosis of familial or sporadic ALS as defined by the El Escorial-Revised (2000) research diagnostic criteria for ALS \[clinically definite, clinically probable, probable-laboratory-supported\]; * ALS onset of ≤18...

Countries:United StatesCanada
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT04057898primaryCompletionDate: changed
LOWMay 24, 2026NCT04057898studyFirstPostDate: changed