Trial reportAnnals of clinical and translational neurology2021
Intravenous arylsulfatase A in metachromatic leukodystrophy: a phase 1/2 study.
Trial report in Annals of clinical and translational neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 10 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Single Center, Open-label, Non-randomized, Uncontrolled, Multiple-dose, Dose Escalation Study of the Safety, Pharmacokinetics and Efficacy of Metazym for the Treatment of Patients With Late Infantile Metachromatic Leukodystrophy (MLD)
A Single Center, Open-Label, Non-Randomized, Uncontrolled, Multiple-Dose, Dose Escalation Study of the Safety, Pharmacokinetics, Efficacy and Long Term Safety of HGT-1111 (Recombinant Human Arylsulfatase A [rhASA, Metazym]) for the Treatment of Patients With Late Infantile Metachromatic Leukodystrophy (MLD)
A Multi-center, Open-Label Extension Study of HGT-1111 (Recombinant Human Arylsulfatase A or rhASA) Treatment in Patients With Late Infantile Metachromatic Leukodystrophy (MLD)
Who cites it
10 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.
- The natural history and burden of illness of metachromatic leukodystrophy: a systematic literature review.European journal of medical research · 2024Pooled it
- Effects of sulfatide on peripheral nerves in metachromatic leukodystrophy.Annals of clinical and translational neurology · 2024Trial
- Metachromatic Leukodystrophy: New Therapy Advancements and Emerging Research Directions.Neurology · 2025Review
- Characterizing circulating biomarkers for childhood dementia disorders: A scoping review of clinical trials.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025Article
- Lentivirus-modified hematopoietic stem cell gene therapy for advanced symptomatic juvenile metachromatic leukodystrophy: a long-term follow-up pilot study.Protein & cell · 2025Article
- Dose-response evaluation of intravenous gene therapy in a symptomatic mouse model of metachromatic leukodystrophy.Molecular therapy. Methods & clinical development · 2024Article
- Novel Therapeutic Approaches in Inherited Neuropathies: A Systematic Review.Pharmaceutics · 2023Review
- Emerging cellular themes in leukodystrophies.Frontiers in cell and developmental biology · 2022Review
- New disease modifying therapies for two genetic childhood-onset neurometabolic disorders (metachromatic leucodystrophy and adrenoleucodystrophy).Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2021Article
- Allogenic hematopoietic stem cell transplantation in two siblings with adult metachromatic leukodystrophy and a systematic literature review.JIMD reports · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 5 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveMetachromatic leukodystrophy (MLD) is an autosomal recessive lysosomal storage disease caused by deficient activity of arylsulfatase A (ASA), resulting in severe motor and cognitive dysfunction. This phase 1/2 study evaluated the safety and efficacy of intravenous (IV) recombinant human ASA (rhASA; HGT-1111, previously known as Metazym) in children with MLD.
methodsThirteen children with MLD (symptom onset < 4 years of age) were enrolled in an open-label, nonrandomized, dose-escalation trial and received IV rhASA at 50, 100, or 200 U/kg body weight every 14 (± 4) days for 52 weeks (NCT00418561; NCT00633139). Eleven children continued to receive rhASA at 100 or 200 U/kg during a 24-month extension period (NCT00681811). Outcome measures included safety observations, changes in motor and cognitive function, and changes in nerve conduction and morphometry.
resultsThere were no serious adverse events considered related to IV rhASA. Motor function and developmental testing scores declined during the study in all dose groups; no significant differences were observed between groups. Nerve conduction studies and morphometric analysis indicated that peripheral nerve pathology did not worsen during the study in any dose group.
interpretationIV rhASA was generally well tolerated. There was no evidence of efficacy in preventing motor and cognitive deterioration, suggesting that IV rhASA may not cross the blood-brain barrier in therapeutic quantities. The relative stability of peripheral nerve function during the study indicates that rhASA may be beneficial if delivered to the appropriate target site and supports the development of rhASA for intrathecal administration in MLD.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.