Safety and Tolerance of RAG-17 in Amyotrophic Lateral Sclerosis Patients With SOD1 Gene Mutation

Summary

The goal of this clinical trial is to evaluate the safety, tolerability and pharmacokinetics of RAG-17 in adult amyotrophic lateral sclerosis (ALS) patients with SOD1 mutation. Patients will receive drug treamtent via dose escalation which ranging from minimum of 60 mg to the maximum tolerated dose (MTD), after reaching the tolerated dose, a fixed dose of the drug is given once every two months for continuous treatment, and the total treatment cycle is 8 months. The duration of this study is two years.

Timeline

Start

2023-05-24

Primary completion

2024-07-11

Completion

2024-07-11

Outcome

Met primary endpoint

paper Thus, the primary safety endpoint was met, showing acceptable safety and tolerability. PMID 42458007 ↗

release “Favorable Safety Profile: RAG-17 met its primary safety endpoint.” ractigen.com ↗

Publications

• Background Feldman EL, Goutman SA, Petri S, Mazzini L, Savelieff MG, Shaw PJ, Sobue G. Amyotrophic lateral sclerosis. Lancet. 2022 Oct 15;400(10360):1363-1380. doi: 10.1016/S0140-6736(22)01272-7. Epub 2022 Sep 15.
• Background Chen L, Zhang B, Chen R, Tang L, Liu R, Yang Y, Yang Y, Liu X, Ye S, Zhan S, Fan D. Natural history and clinical features of sporadic amyotrophic lateral sclerosis in China. J Neurol Neurosurg Psychiatry. 2015 Oct;86(10):1075-81. doi: 10.1136/jnnp-2015-310471. Epub 2015 Jun 29.
• Background Rosenbohm A, Liu M, Nagel G, Peter RS, Cui B, Li X, Kassubek J, Rothenbacher D, Lule D, Cui L, Ludolph AC; ALS Registry Swabia Study Group. Phenotypic differences of amyotrophic lateral sclerosis (ALS) in China and Germany. J Neurol. 2018 Apr;265(4):774-782. doi: 10.1007/s00415-018-8735-9. Epub 2018 Feb 1.
• Background Amyotrophic Lateral Sclerosis (ALS) Fact Sheet. National Institute of Neurological Disorders and Stroke. https://www.ninds.nih.gov/amyotrophic-lateral-sclerosis-als-fact-sheet#treatment. October 2022.
• Background Miller RG, Jackson CE, Kasarskis EJ, England JD, Forshew D, Johnston W, Kalra S, Katz JS, Mitsumoto H, Rosenfeld J, Shoesmith C, Strong MJ, Woolley SC; Quality Standards Subcommittee of the American Academy of Neurology. Practice parameter update: the care of the patient with amyotrophic lateral sclerosis: drug, nutritional, and respiratory therapies (an evidence-based review): report of the Quality Standards Subcommittee of the American Academy of Neurology. Neurology. 2009 Oct 13;73(15):1218-26. doi: 10.1212/WNL.0b013e3181bc0141.
• Background Barrington CJ, Burruano M, Carney C, Choi J, Januska J, Lachuk L, Oskarsson B, Rodriguez C, Speicher L, Tereso G. Addressing the role of edaravone in the management of amyotrophic lateral sclerosis and gaps in care and access: expert panel recommendations. Am J Manag Care. 2021 Aug;27(12 Suppl):S231-S237. doi: 10.37765/ajmc.2021.88732.
• Background Emery AE, Holloway S. Familial motor neuron diseases. Adv Neurol. 1982;36:139-47. No abstract available.
• Background Chattopadhyay M, Valentine JS. Aggregation of copper-zinc superoxide dismutase in familial and sporadic ALS. Antioxid Redox Signal. 2009 Jul;11(7):1603-14. doi: 10.1089/ars.2009.2536.
• Background Shahrizaila N, Sobue G, Kuwabara S, Kim SH, Birks C, Fan DS, Bae JS, Hu CJ, Gourie-Devi M, Noto Y, Shibuya K, Goh KJ, Kaji R, Tsai CP, Cui L, Talman P, Henderson RD, Vucic S, Kiernan MC. Amyotrophic lateral sclerosis and motor neuron syndromes in Asia. J Neurol Neurosurg Psychiatry. 2016 Aug;87(8):821-30. doi: 10.1136/jnnp-2015-312751. Epub 2016 Apr 19.
• Background Brown RH, Al-Chalabi A. Amyotrophic Lateral Sclerosis. N Engl J Med. 2017 Jul 13;377(2):162-172. doi: 10.1056/NEJMra1603471. No abstract available.
• Chen W, Jiang L, Duan C, Kang M, Ye J, Wang L, Pan Y, Qu H, Liao X, Zhou X, Li Y, Gan Z, Chen J, Schacht I, Place RF, Li LC, Wang Y. Oligonucleotide-siRNA conjugate for SOD1 amyotrophic lateral sclerosis: a phase 1 trial. Nat Med. 2026 Jul;32(7):2619-2628. doi: 10.1038/s41591-026-04491-7. Epub 2026 Jul 15.

Drugs

Evaluation	Drug	Modality	Dose	Route
Subject	RAG-17	Small interfering RNA (siRNA)	150 mg	Intrathecal
Subject	RAG-17	Small interfering RNA (siRNA)	180 mg	Intrathecal

Indications

No indication recorded.