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Active, Not Recruiting

NCT Number: NCT06365216

ALS Phase II Study of NX210c

This study will investigate the efficacy, safety, tolerability and pharmacokinetics (PK) of multiple intravenous infusions of NX210c, at two dose levels, in patients with Amyotrophic lateral sclerosis (ALS).

Active, Not Recruiting

This study is active but is not currently recruiting participants.

Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

Centre Hospitalier Regional Et Universitaire De Brest, Brest, France

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About this study

Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease that predominantly affects motor neurons of both the brain and the spinal cord. This leads to muscular atrophy and paralysis, with the majority of patients succumbing to respiratory failure 3-4 years from symptom onset. To date, therapeutic options for ALS are limited and there is no curative treatment. Management of ALS is otherwise supportive and palliative.

There is strong evidence for blood-brain and blood-spinal cord barrier dysfunction in the early stages of ALS. Preclinical in vitro and in vivo data have shown that NX210c exhibits important properties that may be suitable for the treatment of neurological disorders in humans i.e., blood-brain barrier (BBB) integrity restoration, neurotransmission enhancement and neuroprotection.

Based on the safety data collected in a first-in-human single ascending dose study and a multiple ascending dose (MAD) study in healthy elderly subjects, NX210c has been demonstrated to be well tolerated and without safety concerns.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Aged ≥ 18 years, inclusive at screening.
  • Patients diagnosed as having possible, probable, probable laboratory-supported, or definite ALS according to El Escorial Revised criteria.
  • King's Clinical Staging Stage ≤3, disease duration of ≤ 36 calendar months

Exclusion criteria

  • Patients with any cognitive or psychological disorder, intellectual disability or other significant impairment that would result in an inability to understand and sign the informed consent.
  • History of any clinically significant or unstable medical, neurological, psychiatric condition, disorder or disease (other than ALS) or social circumstances that, based on the investigator's judgment, would interfere with the conduct of the study or pose a risk to the patient if they were to participate.

Treatment and study plan

NX210c

Drug

3 times a week, for 4 weeks

Placebo

Drug

3 times a week, for 4 weeks

Primary outcomes

  1. The effect of NX210c on blood neurofilament light chain (NfL) or on a blood and cerebrospinal fluid (CSF) biomarker of BBB integrity.

    Time frame: From predose to 6-week follow-up

    Changes in serum NfL or changes in Albumin CSF/serum quotient (Qalb)

Sponsors and collaborators

Lead sponsor

Axoltis Pharma

Industry

Collaborators

  • ACT4ALS network

Registry information

Official study title

A Double-blind, Randomized, Placebo-controlled, Multicentric, Phase II Study in Adult Patients With Amyotrophic Lateral Sclerosis (ALS) to Assess Efficacy, Safety, Tolerability and Pharmacokinetics of Multiple Intravenous Infusions of NX210c

Acronym: SEALS

Important dates

Study start
2024
Primary completion
2026
Study completion
2026
First posted
Apr 15, 2024
Registry last updated
Dec 24, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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