Open Label, Non-randomized Extension Trial to Assess Long Term Safety and Efficacy of Arimoclomol in Subjects With Amyotropic Lateral Sclerosis Who Have Completed the ORARIALS-01 Trial

Minimum Age:

18 Years

Maximum Age:

N/A

Can participants use Riluzole?

Yes

Inclusion Criteria:

- Subject is able to comprehend and is willing to provide written informed consent and is capable and willing to comply with trial procedures, or in the circumstance that the subject is incompetent, informed consent/assent is provided in accordance with local regulation and/or procedures

- Subject has completed the ORARIALS-01 trial (i.e., met one of the surrogate survival endpoints of tracheostomy or PAV or has completed the 76 weeks randomized treatment period)

- Subject completed ORARIALS-01 while on treatment, where on treatment is defined as having taken the last dose of IMP within 2 weeks of the End of Trial visit (whether at week 76 or prior)

Exclusion Criteria:

- Known or suspected allergy or intolerance to the IMP (Arimoclomol or constituents)

- Exposure to any other investigational treatment, advanced therapy medicinal product or use of any other prohibited concomitant medications

- Women who are lactating or pregnant, or men or women unwilling to use a highly effective method of birth control if not surgically sterile (defined as bilateral tubal ligation, bilateral oophorectomy, or hysterectomy for women; vasectomy for men) for female participants until 4 weeks after last dose and for male participants until 3 months after last dose. Pre-menopausal women must have a negative pregnancy test prior to dosing with trial medication.

- Any of the following medically significant conditions:

1. Clinically significant renal or hepatic disease OR clinical laboratory assessment (results ≥ 3 times the upper limit of normal [ULN] for aspartate aminotransferase and/or alanine aminotransferase, bilirubin ≥ 2 times the ULN, or creatinine ≥ 1.5 times the ULN).

2. Any new condition or worsening of existing condition which, in the opinion of the investigator, would put the subject at undue risk.

- Any serious adverse event or moderate/severe adverse event from the ORARIALS-01 trial which is ongoing at the time of transitioning to ORARIALS-02 and assessed as probably related to IMP