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CNMAu8

Phase 2

Amyotrophic Lateral Sclerosis | Small molecule | Neurology |Clene Inc.|Last Updated: Dec 19, 2025

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 Enrollment85
FDA Designations
ACCELERATED_APPROVAL
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05299658An Open-Label Extension for the Phase 2 Study in Early Symptomatic Amyotrophic Lateral Sclerosis Patients on Stable Background Therapy to Assess Bioenergetic Catalysis With CNM-Au8 to Slow Disease Progression in ALSPHASE2 ACTIVE NOT_RECRUITING 40Nov 13, 2021Aug 1, 2026Dec 19, 20252 Australia
NCT04098406Therapeutic Nanocatalysis to Slow Disease Progression of Amyotrophic Lateral Sclerosis (ALS)PHASE2 COMPLETED 45Dec 19, 2019Jul 13, 2021Jul 3, 20242 Australia
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Study Endpoints
Primary Endpoints
Safety measures
Up to an estimated 96 weeks.

Safety endpoints include incidence of treatment-emergent AEs, drug-related AEs, deaths, SAEs, and AEs leading to discontinuation from the study. Changes from baseline (Week 36 of the placebo controlled phase) in clinical laboratory results, physical examination findings, vital signs, ECGs, and C-SSRS will be summarized descriptively by group and timepoint.

Electromyography measures
Up to an estimated 96 weeks.

Mean change in the average difference between active treatment and placebo from Baseline through End of Study for the MUNIXscore(4), which is the sum of the respective MUNIX values for the Abductor Digiti Minimi (ADM), Abductor Pollicis Brevis (APB), Biceps Brachii (BB), and Tibialis Anterior (TA).

Electromyography Measures of Disease Progression.
36 weeks

The Motor Unit Number Index (MUNIX) is a quantitative neurophysiological measure that provides an index of the number of lower motor neurons supplying a muscle. It reflects the loss of motor neurons in patients with ALS. Mean change in the average difference between active treatment and placebo from Baseline through Week 36 for the MUNIXscore(4), which is the sum of the respective MUNIX values for the Abductor Digiti Minimi (ADM), Abductor Pollicis Brevis (APB), Biceps Brachii (BB), and Tibialis Anterior (TA). The average baseline summed values will be indexed to 100%. Changes will be calculated as the percent change from the Baseline index of 100%.

Secondary Endpoints
Percentage Mean Change in the Average Difference Between Active Treatment and Placebo From Baseline for Respiratory Function as Measured by Forced Vital Capacity (FVC).
36 weeks
Mean Absolute Change of the Average Difference Between Active Treatment and Placebo From Baseline Through Week 36 for the MUNIXscore(4).
36 weeks
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Open label extensionEXPERIMENTALThis is an unblinded open-label extension, all participants will be on active drug.
PlaceboPLACEBO_COMPARATORThe matched placebo used in this study consisted of water, sodium bicarbonate, and food coloring to match volume and color of the experimental treatment
30 mg CNM-Au8EXPERIMENTAL30mg suspension of clean-surfaced, faceted, gold nanocrystals in 60ml of sodium bicarbonate buffered water
Interventions
NameTypeDescription
CNMAu8DRUGCNM-Au8 is an aqueous suspension of clean surfaced faceted nanocrystals consisting of gold atoms self-organized into crystals of various geometrical shapes (hexagonal bi-pyramid, pentagonal bi-pyramid, tetrahedron, decahedron, planar spheroids). Those choosing to participate in the OLE period will orally receive 30 mg of CNM-Au8, once daily.
CNM-Au8DRUGCNM-Au8 is a dark red/purple-colored liquid formulation consisting of a stable suspension of faceted clean surfaced elemental gold nanocrystals in buffered deionized water with a nominal concentration of 0.5 mg/mL of gold. The formulation is buffered by sodium bicarbonate present at a concentration of 0.546 mg/mL. There are no other excipients. The drug product is formulated to be taken orally and will be provided in single dose 60 mL HDPE containers.
PlaceboDRUGPlacebo was liquid with identical color and taste
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Eligibility Criteria
Age Range30 Years — 80 Years
SexALL
Healthy VolunteersNo
Study Sites2

Inclusion Criteria: 1. Participants must have completed the randomized placebo-controlled Treatment Period without compliance issues. 2. Able to understand and give written informed consent to participate in the open-label extension. 3. If referred from a third party (neurologist or a State based A...

Countries:Australia
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT05299658primaryCompletionDate: changed
LOWMay 24, 2026NCT05299658studyFirstPostDate: changed