Question · from the living review of Antisense Oligonucleotide Gene Silencing in Amyotrophic Lateral Sclerosis with SOD1 Mutation →

Is it true that serious neurological adverse events including myelitis and myeloradiculitis associated with tofersen are reversible with treatment discontinuation and immunosuppression?

Likely updated weekly · as of

Priors rates this Likely — 73 out of 100, updated weekly. Probably — but it is not fully settled. On the claim that serious neurological adverse events including myelitis and myeloradiculitis associated with tofersen are reversible with treatment discontinuation and immunosuppression, its four-agent AI review panel weighs 19 primary peer-reviewed studies.

RefutedDoubtfulUncertainLikelyEstablished
where this sits on Priors’ scale of how settled the evidence is

How we got this answer. Priors runs each claim through a panel of four AI agents, each acting as a specialist expert reviewer. They read the published, peer-reviewed studies behind the question, judge how strong, consistent and reliable the evidence is, and turn that judgment into a single rating from 0 to 100 — refreshed every week as new studies appear, so it reflects where the evidence stands today, not a one-off verdict.

The traceable studies behind this rating — and the panel’s single strongest counter-argument to it — are in Priors’ full Antisense Oligonucleotide Gene Silencing in Amyotrophic Lateral Sclerosis with SOD1 Mutation review.

Related Neurology & Psychiatry questions

Is it true that tofersen reduces SOD1 protein through RNase-H mediated degradation of SOD1 mRNA? → Is it true that intrathecal tofersen reduces CSF SOD1 protein levels in a dose-dependent manner in SOD1-ALS patients? → Is it true that tofersen reduces plasma neurofilament light chain levels in SOD1-ALS patients? → Is it true that intrathecal administration of tofersen achieves sufficient CNS penetration to engage SOD1 mRNA targets throughout the neuraxis? →
Reflects the peer-reviewed evidence as of 17 July 2026 and updates as new studies land. AI can make mistakes. Not medical advice.