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ORPHA:53347

Brody myopathy

low confidenceDisorder

Publications

2,937

Trials

0

Interventional, condition-specific

Researchers

813

Distinct authors in sample

Gene link

ATP2A1

Strong

Readiness

5/6

Stages with a signal

Clinical definition (Orphanet)

A rare genetic skeletal muscle disease characterized by childhood onset of exercise-induced impairment of muscle relaxation, stiffness, cramps, and myalgia, predominantly in the arms, legs, and face (eyelids), and, biochemically, by a reduced sarcoplasmic reticulum Ca(2+)-ATPase activity. Symptoms improve after a few minutes of rest and may be exacerbated by cold. The term Brody syndrome refers to a clinically distinguishable subset of patients without ATP2A1 mutations, with adolescence or adult onset and selective muscular involvement, in which myalgia is more common.

How rare: <1 / 1 000 000 — fewer than one in a million. In a city the size of Kolkata, that might mean on the order of fifteen people.

Orphanet entry

Cross-references

Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.

Research stages

Trial readiness signals

Where this condition sits on an open-data research pipeline — not how close a treatment is, and not medical advice. Empty stages often mean “not in these databases under this Mondo ID,” not “impossible.”

5/6 stages with a signal

No specific-condition interventional trial, but broader-category trials exist — discuss eligibility with a clinician.

  1. Gene identifiedPresent

    Strong — ATP2A1

  2. LiteraturePresent

    2,937 matched papers (1,842 in last 10 years) Source

  3. Phenotype characterisedPresent

    16 HPO annotations (e.g. Myokymia; Abnormal reflex; Myotonia) Source

  4. Animal modelPresent

    3 genotype models (Danio rerio) Source

  5. Orphan designationNot found

    No FDA or EMA orphan-drug designation matched this disease via UMLS or preferred name Source

  6. Interventional trialPartial

    None under the specific name; 182 for broader category myopathy

Biology

Genes and phenotypes

Gene–disease validity from GenCC, plus phenotypes and animal models joined from Monarch Initiative via Mondo ID — not a clinical diagnosis aid.

Do we know what causes it?

Yes — we know a specific gene responsible (ATP2A1).

GenCC classification: Strong.

Phenotypes (Monarch / HPO)

16

Associated phenotypes · MONDO:0010977

  • Myokymia
  • Abnormal reflex
  • Myotonia
  • Somatic sensory dysfunction
  • Myalgia

Showing 5 of 16 — open Monarch for the full list.

Animal models (Monarch / Alliance)

3

Model associations linked to this Mondo ID

Monarch fetch 2026-07-29

Therapies

Designations, candidates, and chemicals

FDA OOPD and EMA orphan designations, Open Targets clinical candidates, and CTD chemical associations via MyDisease.info. These never change the interventional-trial headline.

Orphan designation (FDA · EMA)

No designation matched this disease via UMLS or preferred name on the FDA OOPD mirror or EMA orphan register. Absence here is not proof that none exists under another wording.

Open Targets candidates

No drugs or clinical candidates returned for this Mondo ID on Open Targets.

CTD chemicals (MyDisease.info)

No CTD chemical associations returned for this Mondo ID.

Literature

Is anyone studying this?

2,937

2,937 papers have been published on this condition. That is a real research literature — still far smaller than common diseases (breast cancer: over 700,000 papers). Median papers in the last 10 years for a rare disease in this dataset (publications denominator n=3967) is 59.

2,937 papers since the earliest indexed year in this search — median last-10-year count for a rare disease in this dataset is 59 (publications denominator n=3967).

1,842 in the last 10 years · low confidence

Phrase hits: 128 · MeSH hits: 2

Open Europe PMC search

Who's working on it?

813

Distinct author names in 128 sampled papers — named people below.

Who's working on it?

No interventional trial matched this name; these authors publish on it in the sampled literature — a practical starting point for contact.

  1. 01
    Van Engelen BG11 papers · 2026

    Department of Neurology, Donders Centre for Medical Neuroscience, Radboud University Medical Centre, Nijmegen, The Netherlands.

    Papers in Europe PMC
  2. 02
    Sacchetto R10 papers · 2026

    Comparative Biomedicine and Food Science, University of Padova,35020 Legnaro (Padova), Italy, roberta.sacchetto@unipd.it.

    Papers in Europe PMC
  3. 03
    Voermans NC10 papers · 2026

    Department of Neurology, Cognition and Behaviour, Donders Institute for Brain, Radboud University Medical Center, Nijmegen, The Netherlands.

    Papers in Europe PMC
  4. 04
    MacLennan DH9 papers · 2014

    Banting and Best Department of Medical Research, University of Toronto, Ontario, Canada.

    Papers in Europe PMC
  5. 05
    Gentile A7 papers · 2025

    the Department of Veterinary Medical Sciences, University of Bologna, 40064 Bologna, Italy.

    Papers in Europe PMC
  6. 06
    Molenaar JP7 papers · 2026

    Department of Neurology, Donders Centre for Medical Neuroscience, Radboud University Medical Centre, Nijmegen, The Netherlands.

    Papers in Europe PMC
  7. 07
    Sandonà D6 papers · 2026

    From the Departments of Biomedical Sciences and dorianna.sandona@unipd.it.

    Papers in Europe PMC
  8. 08
    Guglielmi V5 papers · 2020

    Department of Neurosciences, Biomedicine and Movement Sciences, Section of Clinical Neurology, University of Verona, Verona, Italy.

    Papers in Europe PMC
  9. 09
    Mascarello F5 papers · 2016

    Comparative Biomedicine and Food Science, University of Padova,35020 Legnaro (Padova), Italy.

    Papers in Europe PMC
  10. 10
    Oosterhof A5 papers · 2026

    Department of Biochemistry, Radboud University Medical Centre, Nijmegen, The Netherlands.

    Papers in Europe PMC

Clinical research

Is a treatment being tested?

0

interventional trials for this specific condition

No interventional trial testing a treatment matched this specific condition name on ClinicalTrials.gov (observational studies and pan-disease registries are listed separately when present). 182 trials are registered for myopathy, the broader category — shown separately because they may or may not enrol this specific subtype.

Data as of 11 September 2026 · last trial check 11 September 2026

No matched interventional trials. This is true for 77.2% of diseases in the trials denominator (5501 of 7126). Here are the researchers publishing on it.

low confidence · 38.6th percentile (trials denominator)

Recruiting interventional trials

From the matched ClinicalTrials.gov set

No interventional trial testing a treatment was found for this specific condition name on ClinicalTrials.gov.

182 interventional trials matched myopathy, the broader category — listed below. Those studies are not counted in the condition-specific total.

Broader category: myopathy

182

Interventional trials for the parent category, exclusive of NCT IDs already counted above. Eligibility for this subtype is not guaranteed.

Worth raising with a clinician. How we count trials.

Recruiting under the broader category

Other registries (secondary)

Broader net from EU CTIS, ISRCTN, and ICTRP when available — deduped against ClinicalTrials.gov IDs already counted above. Dual-model LLM relevance gates what we keep. These rows are not added to the interventional headline.

raw 0 · after dedupe 0 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 0 · dropped 0 · fetched 2026-07-29

Source notes: ictrp: Error: ICTRP public search unavailable (WHO portal is SPA-only; SOAP needs partnership). Tried: https://apps.who.int/tri

No secondary-registry studies passed dual-model relevance for this condition name (after dedupe).

Where to find support

Condition-specific patient organisations, when Orphanet lists them, are on the disease’s Orphanet page. We also link umbrella groups that support undiagnosed and ultra-rare families.

Orphanet entry for Brody myopathy — check Associations / patient organisations on that page.

India — NPRD

Last verified 2026-07-26

This ORPHAcode is not on our curated NPRD list (direct or Mondo-parent match). That does not decide clinical eligibility; families in India should ask a notified Centre of Excellence about current coverage.

Hand-curated for this project. ORPHAcode mappings are best-effort and may be incomplete or imprecise for umbrella categories. Parent (Mondo) matches mean the policy lists a broader category — confirm eligibility with a Centre of Excellence. Financial entitlements summarised from public policy statements and may change. This is not official government guidance.

How we counted this

Europe PMC query (preferred label + any corrected label + Orphanet and Mondo exact synonyms, stoplisted; unioned with resolved MeSH labels when available). UMLS / OMIM / NCIT cross-references are stored on the overview but are not added to the query string.

("Brody myopathy") OR (MESH:"Brody myopathy") OR ("ATP2A1" OR "ATP2A1 syndrome" OR "ATP2A1-related")

Run this search on Europe PMC

MeSH descriptor terms unioned into the query: Brody myopathy

ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):

"Brody myopathy"

Study-type breakdown: 0 interventional · 0 observational · 0 expanded access. Only interventional studies enter the trial headline.

Parent-category trials query:

"myopathy"

Query health: ok — strategies attempted: phrase, mesh; with hits: phrase, mesh

Run this search on ClinicalTrials.gov

Confidence reasoning

  • Preferred label is multi-word and distinctive
  • No synonyms dropped by stoplist
  • No label/synonym collisions with other diseases in this corpus
  • Publication count (2937) is implausibly high for prevalence class "<1 / 1 000 000" — treat as possible over-matching, not a measure of research intensity

Ingested 2026-07-27T00:52:10.018Z