Mucopolysaccharidosis type 4A
MONDO:0009659A rare autosomal recessive lysosomal storage disease caused by deficiency of the enzyme galactosamine-6-sulfatase. It is characterized by skeletal and central nervous system deficits.
Also known as: Morquio A disease, GALNS deficiency, MPS IV A, MPS4A, MPSIVA, Morquio disease type A, Morquio syndrome A, N-acetylgalactosamine-6-sulfate sulfatase deficiency
75 clinical trials for this condition and its sub-types.
Follow this condition — get notified about new trialsBroader categories
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Could a daily shot help kids with rare bone diseases grow?
Disease control OngoingThis early study tests a daily injection of vosoritide (Voxzogo) in 6 children aged 5 to 10 with MPS IVA or VI, rare conditions that cause growth problems. The main goal is to see if the drug is safe and tolerable over 96 weeks. Researchers will also look at changes in height and…
Phase: PHASE1, PHASE2 • Sponsor: University of California, San Francisco • Aim: Disease control
Last updated Jun 27, 2026 11:00 UTC
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Newborn screening study aims to catch rare diseases at birth
Diagnosis OngoingThis study offers voluntary screening for newborns in North Carolina to detect a wide range of rare health conditions early. Using a small blood sample already collected at birth, the program tests for dozens of disorders, including spinal muscular atrophy, cystic fibrosis, and m…
Sponsor: RTI International • Aim: Diagnosis
Last updated Jul 03, 2026 00:00 UTC
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New york program offers extra screening for 100,000 newborns
Diagnosis ENROLLING_BY_INVITATIONScreenPlus is a large pilot program that offers families the option to have their newborn screened for a panel of rare genetic disorders, in addition to standard newborn screening. The study aims to screen 100,000 infants born at eight hospitals in New York. Researchers will eval…
Sponsor: Albert Einstein College of Medicine • Aim: Diagnosis
Last updated Jun 26, 2026 16:15 UTC
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New vitamin supplements aim to make life easier for kids with rare metabolic disorders
Symptom relief OngoingThis study tests new vitamin and mineral supplements called EasiVits for children aged 1-16 with inborn errors of metabolism (IEM). These supplements have less carbohydrate and no flavor, so they can be used with different diets and kids can add their own taste. The goal is to se…
Phase: NA • Sponsor: NeoteriQ Ltd. • Aim: Symptom relief
Last updated Jun 27, 2026 13:00 UTC
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NIH launches major study to unravel mysteries of rare genetic diseases
Knowledge-focused ENROLLING_BY_INVITATIONThis study aims to identify genetic, biochemical, and clinical factors linked to disease severity in people with Gaucher disease and other lysosomal storage disorders. Researchers will evaluate up to 1,000 participants, including patients, carriers, and healthy controls, to bette…
Sponsor: National Human Genome Research Institute (NHGRI) • Aim: Knowledge-focused
Last updated Jul 04, 2026 00:00 UTC
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Weekly Check-Ins could boost patient satisfaction for chronic pain
Knowledge-focused TerminatedThis study looked at whether having more frequent contact with a clinician (at least once a week) improves satisfaction for people with long-lasting musculoskeletal conditions. Participants were split into two groups: one with standard contact and one with extra check-ins via tex…
Phase: NA • Sponsor: University of Texas at Austin • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:06 UTC
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Massive genetic study aims to unlock secrets of rare metabolic diseases
Knowledge-focused ENROLLING_BY_INVITATIONThis study will collect and analyze genetic data from 1000 people with suspected inherited metabolic diseases, including conditions like epilepsy and mitochondrial disorders. Researchers at Karolinska University Hospital aim to improve diagnosis by using advanced genetic testing …
Sponsor: Region Stockholm • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:38 UTC
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Study on COVID-19 and metabolic disorders pulled before it began
Knowledge-focused TerminatedThis study was designed to track how COVID-19 infection might worsen the condition of people with inherited metabolic diseases (IMD). Researchers planned to collect information from French patients with IMD who had or had COVID-19 to see how often their metabolic disease got wors…
Sponsor: University Hospital, Lille • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:37 UTC
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Can a special clinic get workers back on the job faster? norway launches massive study.
Knowledge-focused OngoingThis study tests whether a Norwegian clinic (NSAC) helps people with common mental health issues or muscle pain return to work sooner. 2500 adults are split into three groups: one gets treatment quickly, one waits 10-14 weeks, and one gets a basic check-up. Researchers will track…
Phase: NA • Sponsor: Nordlandssykehuset HF • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:30 UTC
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Massive PT study mines 4 million records to find what works best
Knowledge-focused OngoingThis study looks back at the medical records of about 4 million people who had physical or occupational therapy for muscle and joint problems. Researchers want to see if different ways of giving therapy lead to different results. No new treatments are tested—the goal is to learn …
Sponsor: ATI Holdings, LLC • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:11 UTC
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Phone app vs. doctor: can a mobile tool catch infections after surgery?
Knowledge-focused TerminatedThis study aimed to see if a mobile monitoring tool could accurately identify surgical site infections (SSIs) in orthopedic surgery patients, compared to the usual manual review. The study was withdrawn before enrolling any participants, so no results are available. It was design…
Phase: NA • Sponsor: Stanford University • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:08 UTC
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New study monitors heart risks in rare genetic disease
Knowledge-focused OngoingThis study follows 30 people with mucopolysaccharidoses (MPS) over three years to see how their heart and arteries change. Researchers use neck ultrasounds and blood tests to measure artery thickness, stiffness, and signs of inflammation. The goal is to better understand cardiova…
Sponsor: Children's Hospital of Orange County • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:09 UTC