ReviewMolecular genetics and metabolism
Review of clinical presentation and diagnosis of mucopolysaccharidosis IVA.
Review in Molecular genetics and metabolism. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 97 papers, 2 of them syntheses 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
97 citing papers in PubMed, 2 syntheses or guidelines pooled it, 179 citations in OpenAlex.
- Minimal clinically important difference for the 6-min walk test: literature review and application to Morquio A syndrome.Orphanet journal of rare diseases · 2017Pooled it
- A systematic review of the prevalence of Morquio A syndrome: challenges for study reporting in rare diseases.Orphanet journal of rare diseases · 2014Pooled it
- Pharmacokinetic and pharmacodynamic evaluation of elosulfase alfa, an enzyme replacement therapy in patients with Morquio A syndrome.Clinical pharmacokinetics · 2014Trial
- Comprehensive analysis of hearing function in Morquio A syndrome: Implications for diagnosis and management.Molecular genetics and metabolism · 2026Article
- Long-term follow-up and response to elosulfase alfa in mucopolysaccharidosis type IVA: a single-center cohort from the Czech Republic.Orphanet journal of rare diseases · 2026Article
- Impact of regular physiotherapy intervention on the function and quality of life of pediatric patients diagnosed with Mucopolysaccharidosis.Molecular genetics and metabolism reports · 2026Article
- Natural History of Morquio A Syndrome.Journal of inherited metabolic disease · 2026Review
- Long-term Natural History and Elosulfase Alfa Treatment for Mucopolysaccharidosis Type IVA: A Single-Center Study in the Czech Republic.Research square · 2026Article
- Review
- Clinical expert opinion on the role of elosulfase alfa in non-ambulatory individuals with Morquio A syndrome.Molecular genetics and metabolism reports · 2026Article
- Enhanced lysosomal exocytosis and altered growth factor signaling are associated with cartilage pathology in a model of mucopolysaccharidosis type IVA.Disease models & mechanisms · 2026Article
- Mucopolysaccharidoses: A biochemical study under limited resources.Molecular genetics and metabolism reports · 2025Article
- Long-term outcomes of elosulfase alfa enzyme replacement therapy in adults with MPS IVA: a sub-analysis of the Morquio A Registry Study (MARS).Orphanet journal of rare diseases · 2025Article
- Mucopolysaccharidosis type IVA and severe hidradenitis suppurativa: A case series.JAAD case reports · 2025Article
- Integrase-Deficient Lentiviral Vector as a Platform for Efficient CRISPR/Cas9-Mediated Gene Editing for Mucopolysaccharidosis IVA.International journal of molecular sciences · 2025Article
- Systematic Analysis of Multiple Imaging Modalities in Infants Diagnosed with Mucopolysaccharidosis by Newborn Screening.Diagnostics (Basel, Switzerland) · 2025Article
- Real-world treatment with elosulfase alfa in patients with MPS IVA is associated with improved endurance over time.Genetics in medicine open · 2025Article
- "Mucopolysaccharidosis syndrome in a 9-Year-old boy: oral-dental management and diagnostic considerations": a case report.BMC oral health · 2024Article
- Mucopolysaccharidosis-Plus Syndrome: Is This a Type of Mucopolysaccharidosis or a Separate Kind of Metabolic Disease?International journal of molecular sciences · 2024Review
- Consensus-based expert recommendations on the management of MPS IVa and VI in Saudi Arabia.Orphanet journal of rare diseases · 2024Article
37 more citing papers are in PubMed but not listed here.
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 9 institutions in 4 countries.
Funding
Abstract
Mucopolysaccharidosis type IVA (MPS IVA) was described in 1929 by Luis Morquio from Uruguay and James Brailsford from England, and was later found as an autosomal recessive lysosomal storage disease. MPS IVA is caused by mutations in the gene encoding the enzyme, N-acetylgalactosamine-6-sulfate sulfatase (GALNS). Reduced GALNS activity results in impaired catabolism of two glycosaminoglycans (GAGs), chondroitin-6-sulfate (C6S) and keratan sulfate (KS). Clinical presentations of MPS IVA reflect a spectrum of progression from a severe "classical" phenotype to a mild "attenuated" phenotype. More than 180 different mutations have been identified in the GALNS gene, which likely explains the phenotypic heterogeneity of the disorder. Accumulation of C6S and KS manifests predominantly as short stature and skeletal dysplasia (dysostosis multiplex), including atlantoaxial instability and cervical cord compression. However, abnormalities in the visual, auditory, cardiovascular, and respiratory systems can also affect individuals with MPS IVA. Diagnosis is typically based on clinical examination, skeletal radiographs, urinary GAG, and enzymatic activity of GALNS in blood cells or fibroblasts. Deficiency of GALNS activity is a common assessment for the laboratory diagnosis of MPS IVA; however, with recently increased availability, gene sequencing for MPS IVA is often used to confirm enzyme results. As multiple clinical presentations are observed, diagnosis of MPS IVA may require multi-system considerations. This review provides a history of defining MPS IVA and how the understanding of the disease manifestations has changed over time. A summary of the accumulated knowledge is presented, including information from the International Morquio Registry. The classical phenotype is contrasted with attenuated cases, which are now being recognized and diagnosed more frequently. Laboratory based diagnoses of MPS IVA are also discussed.
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What OpenQuestion holds
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.