Clene Reports Significant Survival Benefit With CNM-Au8® Treatment in ALS EAP Compassionate Use Programs

  • Two “Compassionate Use” Expanded Access Programs (EAPs) provided access to treatment with CNM-Au8 to more than 250 people living with amyotrophic lateral sclerosis (ALS).

  • A significant survival benefit (p=0.0001) was observed in EAP participants treated with CNM-Au8 compared to historical ALS disease progression controls (participants untreated with CNM-Au8) in two independent analyses: a 68% decreased risk of all-cause mortality compared to PRO-ACT matched controls, and a 57% decreased risk of all-cause mortality compared to ALS Natural History Consortium matched controls.

  • CNM-Au8 30 mg treatment was well-tolerated, without a single serious adverse event attributed to CNM-Au8, and no significant safety findings reported.

SALT LAKE CITY, Feb. 22, 2024 (GLOBE NEWSWIRE) -- Clene Inc. (Nasdaq: CLNN) (along with its subsidiaries, “Clene”) and its wholly owned subsidiary Clene Nanomedicine, Inc., a clinical-stage biopharmaceutical company focused on improving mitochondrial health and protecting neuronal function to treat neurodegenerative diseases, including ALS and multiple sclerosis (MS), today reported new, significant survival results from two independent analyses of the pooled data from the intermediate-size EAPs supported by Clene. People living with ALS who were generally too advanced in their disease to qualify for clinical trials received daily oral CNM-Au8® 30 mg for up to four years to date.

A pooled survival analysis of EAP participants treated with CNM-Au8 30 mg was compared to two independent datasets derived from PRO-ACT and the ALS/MND Natural History Consortium. The EAP dataset was comprised of 256 participants with ALS of which 220 EAP participants had all baseline values available for matching. These participants were matched for similar baseline characteristics compared to each non-CNM-Au8 treated control.

The results in the EAP participants versus the matched controls demonstrated a significant survival benefit for each comparison:

  • The PRO-ACT dataset is the largest publicly available repository of longitudinal ALS clinical trial data, containing more than 12,000 records of trial participants:

    • CNM-Au8 EAP vs. PRO-ACT matched controls: The baseline risk-adjusted hazard ratio demonstrated a 68% decreased risk of all-cause mortality with CNM-Au8 treatment (HR: 0.320, 95% CI: 0.178 – 0.575, p = 0.0001).

  • The ALS/MND Natural History Consortium data set contained approximately 1,700 records of people living with ALS from researchers across nine academic sites collecting recent real-world data:

    • CNM-Au8 EAP vs. ALS/MND Natural History Consortium matched controls: The baseline risk-adjusted hazard ratio demonstrated a 57% decreased risk of all-cause mortality with CNM-Au8 treatment (HR: 0.433, 95% CI: 0.282 – 0.663, p = 0.0001).

Analyses including all 256 EAP participants compared to the 220 matched controls also showed statistically significant survival benefits with log-rank p-values of p < 0.0001 and p=0.006 for the PRO-ACT and ALS/MND Natural History Consortium matched controls, respectively.

“The long-term safety and survival data from the CNM-Au8 expanded access programs add to the available data supporting CNM-Au8 moving rapidly to Phase 3 testing in ALS,” said Merit Cudkowicz, MD, MSc, an internationally renowned clinician in the treatment of ALS and Chair of Neurology, Director of the Sean M. Healey and AMG Center for ALS at Mass General Hospital and the Julieanne Dorn Professor of Neurology at Harvard Medical School. “This is one of a few therapies with positive Phase 2 data that must go forward to Phase 3 trials.”

“These EAP results help us better understand how people living with more advanced disease respond to treatment,” said Richard S. Bedlack Jr., MD, PhD, MS Stewart, Hughes and Wendt Distinguished Professor, Neurology, Neuromuscular Disease at Duke University School of Medicine, and a member of the EAP02 steering committee. “Collecting data of peoples’ experience beyond clinical trials is extremely important in rare diseases like ALS. These data warrant consideration to be included in Clene’s discussions about CNM-Au8 with regulatory agencies.”

An EAP is an FDA-regulated pathway that allows patients with a serious or immediately life-threatening condition to gain access to an investigational drug outside of clinical trials when no comparable or satisfactory alternative therapy is available.

The Sean M. Healey & AMG Center for ALS at Massachusetts General Hospital and Clene supported the first EAP (EAP01) launched in 2019. EAP01 was initiated by Dr. Cudkowicz as the principal investigator. EAP01 is a single-site, intermediate-size EAP that allows individuals with ALS who are otherwise unable to qualify for CNM-Au8 in clinical trials access to CNM-Au8. This is currently the longest running intermediate-size EAP in ALS.

The second EAP (EAP02) was started in 2021 for people living with ALS who did not qualify for participation in the concurrent HEALEY ALS Platform Trial, which is a perpetual multi-center, randomized, double-blind, placebo-controlled clinical trial program designed to evaluate the efficacy and safety of multiple investigational products in people living with ALS. EAP02 is sponsored by Clene and is presently available at 16 clinical sites across the U.S. associated with the Northeast ALS Consortium (NEALS).  

Clene was also part of a consortium that was recently awarded a four-year grant totaling $45.1 million from the National Institute of Neurological Disorders and Stroke (NINDS), a division of the National Institutes of Health (NIH), to conduct a third EAP in ALS. Consortium partners include Synapticure and Columbia University. This EAP is expected to commence enrollment in the first half of 2024.

As previously announced, treatment with CNM-Au8 produced consistent survival and delayed time to ALS clinical worsening data in two independent Phase 2, randomized, placebo-controlled, double-blind ALS trials and their open-label extensions. The Phase 2 HEALEY ALS Platform Trial in the U.S. and the RESCUE-ALS Trial in Australia studied 285 participants with ALS at specialty clinics. CNM-Au8 was well-tolerated in all its clinical studies. No serious adverse events have been associated with CNM-Au8 treatment in any Phase 1 or Phase 2 study conducted, including all those involving ALS participants.

About Clene

Clene Inc., (Nasdaq: CLNN) (along with its subsidiaries, “Clene”) and its wholly owned subsidiary Clene Nanomedicine Inc., is a late clinical-stage biopharmaceutical company focused on improving mitochondrial health and protecting neuronal function to treat neurodegenerative diseases, including amyotrophic lateral sclerosis, Parkinson’s disease and multiple sclerosis. CNM-Au8® is an investigational first-in-class therapy that improves central nervous system cells’ survival and function via a mechanism that targets mitochondrial function and the NAD pathway while reducing oxidative stress. CNM-Au8® is a federally registered trademark of Clene Nanomedicine, Inc. The company is based in Salt Lake City, Utah, with R&D and manufacturing operations in Maryland. For more information, please visit or follow us on X (formerly Twitter) and LinkedIn.

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