ArticleHuman genomics2024
Clinical outcomes of patients with mut-type methylmalonic acidemia identified through expanded newborn screening in China.
Article in Human genomics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Exploration of Metabolic Alterations in Methylmalonic Acidemia across Distinct Genetic Backgrounds.ACS omega · 2026Article
- Clinical and genotypic analysis of 79 children with methylmalonic acidemia: a retrospective single-center study in China.Frontiers in endocrinology · 2026Article
- Vitamin B12 Alleviates Hepatic Ischemia-Reperfusion Injury with Restoration of Propanoate Metabolism and Mitochondrial Function.Journal of inflammation research · 2026Article
- Efficacy and organ protective effects of continuous renal replacement therapy in children with organic acidemia complicated by decompensated acidosis: a retrospective study in PICU.Orphanet journal of rare diseases · 2025Article
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Authors and funding
19 authors.
Funding
Abstract
backgroundIsolated methylmalonic acidemia, an autosomal recessive disorder of propionate metabolism, is usually caused by mutations in the methylmalonyl-CoA mutase gene (mut-type). Because no universal consensus was made on whether mut-type methylmalonic acidemia should be included in newborn screening (NBS), we aimed to compare the outcome of this disorder detected by NBS with that detected clinically and investigate the influence of NBS on the disease course. DESIGN &
methodsIn this study, 168 patients with mut-type methylmalonic acidemia diagnosed by NBS were compared to 210 patients diagnosed after disease onset while NBS was not performed. Clinical data of these patients from 7 metabolic centers in China were analyzed retrospectively, including initial manifestations, biochemical metabolites, the responsiveness of vitamin B12 therapy, and gene variation, to explore different factors on the long-term outcome.
resultsBy comparison of the clinically-diagnosed patients, NBS-detected patients showed younger age at diagnosis, less incidence of disease onset, better responsiveness of vitamin B12, younger age at start of treatment, lower levels of biochemical features before and after treatment, and better long-term prognosis (P < 0.01). Onset of disease, blood C3/C2 ratio and unresponsiveness of vitamin B12 were more positively associated with poor outcomes of patients whether identified by NBS. Moreover, the factors above as well as older age at start of treatment were positively associated with mortality.
conclusionsThis research highly demonstrated NBS could prevent major disease-related events and allow an earlier treatment initiation. As a key prognostic factor, NBS is beneficial for improving the overall survival of infants with mut-type methylmalonic acidemia.
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