Metabolic disorders such as argininosuccinic and glutaric aciduria, methylmalonic acidemia, homocystinuria or primary hyperoxaluria require specific diets to prevent the accumulation of substances that the body can’t process. Current treatments mainly focus on managing symptoms and metabolite levels, and do not always prevent the progressive deterioration caused by mutations associated with the condition. However, emerging gene therapies hold promise for transforming these diseases by targeting their underlying causes, as presented in the oral abstract session, “Gene and cell therapy for metabolic diseases” of the ongoing 28th Annual Meeting of the American Society of Gene & Cell Therapy (ASGCT) meeting in New Orleans.
Metachromatic leukodystrophy (MLD) is an autosomal recessive lysosomal storage disease originating from biallelic pathogenic variants in the ARSA gene, mainly affecting young children.
Release Therapeutics SA has announced that it has secured CHF3.3 million (US$3.87 million) in seed funding. The proceeds will be used to finance primate studies of the company’s cell macroencapsulation technology for use in metachromatic leukodystrophy (MLD).
Two days after the U.S. FDA announced approval of gene therapy Lenmeldy (atidarsagene autotemcel), making it the first treatment option for rare disease metachromatic leukodystrophy, Orchard Therapeutics and parent firm Kyowa Kirin Co. Ltd. disclosed the wholesale acquisition price of $4.25 million for the one-time treatment, which edges out hemophilia B gene therapy Hemgenix (etranacogene dezaparvovec) to become the world’s most expensive drug.
The U.S. FDA approved Orchard Therapeutics plc’s BLA for gene therapy atidarsagene autotemcel, making it the first treatment option for metachromatic leukodystrophy in the U.S. The one-time treatment, branded Lenmeldy, is indicated for children with presymptomatic late infantile, presymptomatic early juvenile or early symptomatic early juvenile disease.
In one of its familiar U-turns, the U.K. National Institute for Health and Care Excellence (NICE) has recommended NHS England should fund a rare disease gene therapy from Orchard Therapeutics plc, considered to be the world’s most expensive drug. The list price for Libmeldy (atidarsagene autotemcel) in England and Wales is £2,875,000 (US$3.9 million), making it the most expensive drug that NICE has ever evaluated.
NICE has said “no” to regular NHS funding for a rare disease gene therapy from Orchard Therapeutics Ltd. in draft guidance – although experience from Novartis AG’s pricey Zolgensma (onasemnogene abeparvovec) for spinal muscular atrophy shows this could change. That’s because this week NICE published final guidance that recommends funding for Zolgensma, thought to be the world’s most expensive drug, after an initial rejection late last year.
