ORPHA:45
Adenosine monophosphate deaminase deficiency
Also known as: AMP deaminase deficiency · Myoadenylate deaminase deficiency
Publications
425
60.7th percentile
Trials
0
Interventional, condition-specific
Researchers
1,136
Distinct authors in sample
Gene link
—
Readiness
2/6
Stages with a signal
Clinical definition (Orphanet)
A rare disorder for which two forms have been described. Lack of activity of the erythrocyte isoform of adenosine monophosphate (AMP) deaminase has been described in subjects with low plasma uric acid levels without obvious clinical relevance and will not be described further. Myoadenylate deaminase deficiency is an inherited disorder of muscular energy metabolism with a lack of AMP deaminase activity in skeletal muscle. It is characterised by exercise-induced muscle pain, cramps and/or early fatigue.
How rare: How common this is has not been clearly measured.
Cross-references
Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.
- MONDO:0013028
- MeSH:C538234
- UMLS:C2931781
Additional Mondo synonyms (1)
myoadenylate deaminase deficiency
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.”
2/6 stages with a signal
Research-stage checklist from open sources (GenCC, literature, Monarch when enriched, ClinicalTrials.gov). Not a prognosis or care recommendation.
- Gene identifiedNot found
No GenCC disease–gene assertion in this build
- LiteraturePresent
425 matched papers (129 in last 10 years) Source
- Phenotype characterisedPresent
7 HPO annotations (e.g. Muscle spasm; Limb muscle weakness; Myalgia) Source
- Animal modelNot found
No Alliance genotype “model of” associations via Monarch for these Mondo IDs
- Orphan designationNot found
No FDA or EMA orphan-drug designation matched this disease via UMLS or preferred name Source
- Interventional trialNot found
No matched interventional trial under our ClinicalTrials.gov rules
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?
Not yet — the cause hasn't been pinned down in GenCC.
No strong gene–disease assertion joined for this Orphanet entity.
Phenotypes (Monarch / HPO)
7
Associated phenotypes · MONDO:0013028
- Muscle spasm
- Limb muscle weakness
- Myalgia
- Exercise-induced myalgia
- Increased circulating lactate concentration
Showing 5 of 7 — open Monarch for the full list.
Animal models (Monarch / Alliance)
None returned for this Mondo ID. Empty here is not proof that no model organism work exists under another name or gene.
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?
425
425 papers have ever been published on this condition (under this name). For scale, breast cancer has over 700,000. Median papers in the last 10 years for a rare disease in this dataset (publications denominator n=3967) is 59.
425 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).
129 in the last 10 years · high confidence · 60.7th percentile (publications denominator)
Phrase hits: 425 · MeSH hits: 0
Who's working on it?
1,136
Distinct author names in 200 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.
- 01
- 02Finsterer J7 papers · 2019
Ludwig Boltzmann Institute for Research in Epilepsy and Neuromuscular Disorders, Vienna, Austria. fij@2nr.nkr.magwien.gv.at
Papers in Europe PMC - 03Candotti F6 papers · 2022
Genetics and Molecular Biology Branch, National Human Genome Research Institute, National Institutes of Health, 49 Convent Dr., Bld. 49, Rm. 3A04, Bethesda, MD, 20892-4442, USA, fabio@nhgri.nih.gov.
Papers in Europe PMC - 04Aiuti A5 papers · 2024
San Raffaele-Telethon Institute for Gene Therapy (HSR-TIGET), Milan, Italy. a.aiuti@hsr.it
Papers in Europe PMC - 05Le Maréchal C5 papers · 2020
Institut National de la Santé et de la Recherche Médicale, UMR 1078, Brest, France.
Papers in Europe PMC - 06Stöllberger C5 papers · 2013
2nd Medical Department, Krankenanstalt Rudolfstiftung, Vienna, Austria.
Papers in Europe PMC - 07Holmes EW4 papers · 2014
Sanford Consortium for Regenerative Medicine, San Diego, CA, USA.
Papers in Europe PMC - 08Marcorelles P4 papers · 2020
Pathology Department-EA 4685 LNB, CHRU Morvan, Brest, France.
Papers in Europe PMC - 09Onodera M4 papers · 2023
Department of Pediatrics, Hokkaido University School of Medicine, Sapporo, Japan. mk98d116@md.tsukuba.ac.jp
Papers in Europe PMC - 10Rannou F4 papers · 2020
Physiology Department-EA 1274, CHRU Cavale Blanche, Brest, France.
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. 1 observational study did — shown below because natural-history and cohort work can be an important step toward a trial.
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.
high 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.
See who's working on it — people publishing on this disease are often the practical next contact when no trial is listed.
Observational and natural-history studies
1 observational study matches this condition. These do not test a treatment and are not counted in the interventional-trial headline, but they are genuine research: natural-history work often defines the endpoints needed for a future rare-disease trial, and families may be able to enroll.
Recruiting or not-yet-recruiting
- NCT06092346·RECRUITING·A Natural History Study Seeks to Understand the Clinical, Genomic, Pharmacological, Laboratory, and Dietary Determinates of Pyrimidine and Purine Metabolism Disorders
Conditions: AMPD3, OMIM*102772, AMP Deaminase Deficiency · AK1, OMIM *103000, Adenylate Kinase Deficiency · AMPD1, OMIM *102770, Myopathy Due to Myoadenylate Deaminase Deficiency · TPMT, OMIM *187680, Thoipurines, Poor Metabolism of·Matched via name phrase
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 Adenosine monophosphate deaminase deficiency — check Associations / patient organisations on that page.
India — NPRD
Last verified 2026-07-26This 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.
("Adenosine monophosphate deaminase deficiency" OR "AMP deaminase deficiency" OR "Myoadenylate deaminase deficiency")ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Adenosine monophosphate deaminase deficiency" OR "AMP deaminase deficiency" OR "Myoadenylate deaminase deficiency"
Study-type breakdown: 0 interventional · 1 observational · 0 expanded access. Only interventional studies enter the trial headline.
Query health: ok — strategies attempted: phrase; with hits: phrase
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
Ingested 2026-07-26T12:12:49.450Z