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Glycogen storage disease V
MONDO:0009293Myophosphorylase deficiency (McArdle's disease), or glycogen storage disease type 5 (GSD5), is a severe form of glycogen storage disease characterized by exercise intolerance.
Also known as: GSD due to muscle glycogen phosphorylase deficiency, GSD type 5, GSD type V, McArdle disease, Mcardle disease, PYGM glycogen storage disease, glycogen storage disease V, glycogen storage disease caused by mutation in PYGM
26 clinical trials for this condition and its sub-types.
Follow this condition — get notified about new trialsBroader categories
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New chemo combo may lower death risk in child stem cell transplants
Disease control CompletedThis study tested two different chemotherapy drugs (Treosulfan and Busulfan) given before a stem cell transplant in 106 children with serious non-cancer diseases like immune disorders, metabolic diseases, blood disorders, and bone marrow failure. The goal was to see which drug le…
Phase: PHASE2 • Sponsor: medac GmbH • Aim: Disease control
Last updated Jun 27, 2026 08:03 UTC
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New metabolomic test could spot rare metabolic diseases faster
Diagnosis CompletedThis study tested a new method called global metabolomic profiling to diagnose inborn errors of metabolism, a group of rare genetic disorders. Researchers compared this approach to traditional testing in 240 participants. The goal was to see if the new method could more accuratel…
Sponsor: Mayo Clinic • Aim: Diagnosis
Last updated Jun 27, 2026 07:53 UTC
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Dietary oil shows promise for rare muscle disorder
Symptom relief CompletedThis study tested whether a dietary oil called triheptanoin can improve exercise capacity in adults with McArdle disease, a rare genetic disorder that affects how muscles use stored sugar. Twelve participants received either triheptanoin or a placebo oil for two weeks, then switc…
Phase: PHASE2 • Sponsor: Institut National de la Santé Et de la Recherche Médicale, France • Aim: Symptom relief
Last updated Jun 26, 2026 13:57 UTC
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New registry tracks pregnancy in women with rare metabolic diseases
Knowledge-focused CompletedThis study created a registry of medical records from women with inborn errors of metabolism—rare conditions that affect how the body turns food into energy. Researchers collected data from past or current pregnancies and followed babies for one year after birth. The goal was to …
Sponsor: National Human Genome Research Institute (NHGRI) • Aim: Knowledge-focused
Last updated Jul 04, 2026 00:00 UTC
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Study explores how family and friends impact caregiver health
Knowledge-focused CompletedThis completed study looked at how the social networks of caregivers affect their stress and health when caring for someone with an inherited disease. Researchers surveyed over 680 participants, including family members and formal caregivers, to understand caregiving burden and s…
Sponsor: National Human Genome Research Institute (NHGRI) • Aim: Knowledge-focused
Last updated Jul 02, 2026 00:00 UTC
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Can a breath test reveal how muscles make energy? tiny study explores new way to track treatment effects
Knowledge-focused CompletedThis small pilot study looked at whether simple breath and urine tests can measure how well muscles produce energy in children with metabolic myopathies (rare muscle disorders). Three participants completed a 12-week at-home physiotherapy program. The goal was to see if these non…
Phase: NA • Sponsor: University of British Columbia • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:02 UTC
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Study reveals HPV vaccine gaps in teens with chronic illness
Knowledge-focused CompletedThis study looked at how many girls and young women aged 11 to 20 with chronic diseases (like diabetes or immune conditions) got the HPV vaccine, compared to those without chronic illness. Researchers reviewed records of 223 participants from a hospital in France. The goal was to…
Sponsor: Assistance Publique - Hôpitaux de Paris • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:59 UTC