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ORPHA:289601

Hereditary arterial and articular multiple calcification syndrome

low confidenceDisorder

Also known as: CALJA · Calcification of joints and arteries

Publications

4,778

Trials

0

Interventional, condition-specific

Researchers

442

Distinct authors in sample

Gene link

NT5E

Strong

Readiness

3/6

Stages with a signal

Clinical definition (Orphanet)

arterial and articular multiple calcification syndrome is a very rare genetic vascular disease of inheritance, described in less than 20 patients to date, characterized by adult-onset (as early as the second decade of life) isolated calcification of the arteries of the lower extremities (including the iliac, femoral, and tibial arteries) as well as the capsule joints of the fingers, wrists, ankles and feet, and that usually manifests with mild paresthesias of the lower extremities, intense joint pain and swelling, and early onset arthritis of affected joints.

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.

Additional Mondo synonyms (1)

calcification of joints and arteries

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.”

3/6 stages with a signal

No matched interventional trial; the gene is known and literature exists — preclinical or natural-history work may still be the practical next step.

  1. Gene identifiedPresent

    Strong — NT5E

  2. LiteraturePresent

    4,778 matched papers (3,958 in last 10 years) Source

  3. Phenotype characterisedPresent

    15 HPO annotations (e.g. Arterial calcification; Decreased serum creatinine; Coronary artery calcification) Source

  4. Animal modelNot found

    No Alliance genotype “model of” associations via Monarch for these Mondo IDs

  5. Orphan designationNot found

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

  6. 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?

Yes — we know a specific gene responsible (NT5E).

GenCC classification: Strong.

Phenotypes (Monarch / HPO)

15

Associated phenotypes · MONDO:0008895

  • Arterial calcification
  • Decreased serum creatinine
  • Coronary artery calcification
  • Arterial tortuosity
  • Abnormal vascular morphology

Showing 5 of 15 — 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)

1 associated chemical · 11 pathways. Therapeutic evidence is listed first when present — not a treatment recommendation.

  • potassium phosphate · marker/mechanism

Pathways: Purine metabolism; Pyrimidine metabolism; Nicotinate and nicotinamide metabolism; Metabolic pathways; Metabolism; Metabolism of nucleotides; Nicotinate metabolism; Metabolism of water-soluble vitamins and cofactors

MyDisease.info · MONDO:0008895

Literature

Is anyone studying this?

4,778

4,778 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.

4,778 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).

3,958 in the last 10 years · low confidence

Phrase hits: 80 · MeSH hits: 3

Open Europe PMC search

Who's working on it?

442

Distinct author names in 80 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
    Martin L9 papers · 2024

    UMR CNRS 6015-Inserm 1083, School of Medicine, Bretagne Loire University, 49045 Angers, France. LuMartin@chu-angers.fr.

    Papers in Europe PMC
  2. 02
    Le Saux O8 papers · 2026

    Department Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI 96813, USA. lesaux@hawaii.edu.

    Papers in Europe PMC
  3. 03
    St Hilaire C5 papers · 2022

    Division of Cardiology, Department of Medicine, and the Pittsburgh Heart, Lung, and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, United States.

    Papers in Europe PMC
  4. 04
    Pomozi V4 papers · 2026

    Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, USA; Institute of Enzymology, Research Center for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary.

    Papers in Europe PMC
  5. 05
    Váradi A4 papers · 2026

    Institute of Enzymology, Research Center for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary.

    Papers in Europe PMC
  6. 06
    Boehm M3 papers · 2022

    National Heart, Lung, and Blood Institute, Bethesda, MD, USA.

    Papers in Europe PMC
  7. 07
    Gahl WA3 papers · 2022

    Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20814, USA.

    Papers in Europe PMC
  8. 08
    Kauffenstein G3 papers · 2024

    UMR CNRS 6015-Inserm 1083, School of Medicine, Bretagne Loire University, 49045 Angers, France. gilles.kauffenstein@gmail.com.

    Papers in Europe PMC
  9. 09
    Kuo S3 papers · 2021

    Department of Pediatrics Kapi'olani Medical Center for Women and Children and University of Hawaii, John A. Burns School of Medicine, Honolulu, Hawaii, USA.

    Papers in Europe PMC
  10. 10
    Millán JL3 papers · 2023

    Sanford Burnham Prebys, La Jolla, San Diego, CA, USA.

    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).

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.

See who's working on it — people publishing on this disease are often the practical next contact when no trial is listed.

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 2026-07-30

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 Hereditary arterial and articular multiple calcification syndrome — 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.

("Hereditary arterial and articular multiple calcification syndrome" OR "CALJA" OR "Calcification of joints and arteries" OR "Calcification of the joints and arteries") OR (MESH:"Calcification of Joints and Arteries") OR ("NT5E" OR "NT5E syndrome" OR "NT5E-related")

Run this search on Europe PMC

MeSH descriptor terms unioned into the query: Calcification of Joints and Arteries

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

"Hereditary arterial and articular multiple calcification syndrome" OR "CALJA" OR "Calcification of joints and arteries" OR "Calcification of the joints and arteries"

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

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 (4778) is implausibly high for prevalence class "<1 / 1 000 000" — treat as possible over-matching, not a measure of research intensity

Ingested 2026-07-27T12:16:08.255Z