ORPHA:280586
Chondrodysplasia with joint dislocations, gPAPP type
Also known as: gPAPP deficiency
Publications
71
51.7th percentile
Trials
0
Interventional, condition-specific
Researchers
122
Distinct authors in sample
Gene link
BPNT2
Definitive
Readiness
4/6
Stages with a signal
Clinical definition (Orphanet)
A rare, genetic, primary bone characterized by onset of disproportionate short stature, shortening of the limbs, joint dislocations, micrognathia, posterior cleft palate, brachydactyly, short metacarpals and irregular size of the metacarpal epiphyses, supernumerary carpal ossification centers and facial features. In addition, hearing impairment and mild psychomotor delay have also been reported.
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.
Cross-references
Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.
- MONDO:0013561
- OMIM:614078
- UMLS:C3279757
Additional Mondo synonyms (1)
chondrodysplasia with joint dislocations, gPAPP type
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.”
4/6 stages with a signal
No matched interventional trial, but a gene association and an animal model are on record — often described as translation-ready / stalled at the clinical step.
- Gene identifiedPresent
Definitive — BPNT2
- LiteraturePresent
71 matched papers (67 in last 10 years) Source
- Phenotype characterisedPresent
29 HPO annotations (e.g. Radial head subluxation; Short long bone; Cleft palate) Source
- Animal modelPresent
1 genotype model (Mus musculus) Source
- 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?
Yes — we know a specific gene responsible (BPNT2).
GenCC classification: Definitive.
Phenotypes (Monarch / HPO)
29
Associated phenotypes · MONDO:0013561
- Radial head subluxation
- Short long bone
- Cleft palate
- Irregular epiphyses of the metacarpals
- High forehead
Showing 5 of 29 — open Monarch for the full list.
Animal models (Monarch / Alliance)
1
Model associations linked to this Mondo ID
- Bpnt2tm1.2Aros/Bpnt2tm1.2Aros [background:] B6(SJL)-Bpnt2tm1.2Aros·MGI:6466738·Mus musculus
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?
71
71 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.
71 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).
67 in the last 10 years · high confidence · 51.7th percentile (publications denominator)
Phrase hits: 14 · MeSH hits: 0
Who's working on it?
122
Distinct author names in 14 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.
- 01Cormier-Daire V4 papers · 2021
Department of Genetics, INSERM UMR 1163, Université Paris Descartes-Sorbonne Paris Cité, Institut Imagine, AP-HP, Hôpital Necker Enfants Malades, 75015 Paris, France.
Papers in Europe PMC - 02Huber C3 papers · 2020
Department of Genetics, INSERM UMR 1163, Université Paris Descartes-Sorbonne Paris Cité, Institut Imagine, AP-HP, Hôpital Necker Enfants Malades, 75015 Paris, France.
Papers in Europe PMC - 03Rossi A3 papers · 2020
Department of Molecular Medicine, Unit of Biochemistry, University of Pavia, Pavia, Italy.
Papers in Europe PMC - 04
- 05
- 06
- 07
- 08Ehmke N2 papers · 2020
Charité - Universitätsmedizin Berlin, Institute of Medical Genetics and Human Genetics, Augustenburger Platz 1, 13353 Berlin, Germany; Max Planck Institute for Molecular Genetics, Development and Disease Group, Ihnestr. 63-73, 14195 Berlin, Germany. Electronic address: nadja.ehmke@charite.de.
Papers in Europe PMC - 09Fischer-Zirnsak B2 papers · 2020
Charité - Universitätsmedizin Berlin, Institute of Medical Genetics and Human Genetics, Augustenburger Platz 1, 13353 Berlin, Germany; Max Planck Institute for Molecular Genetics, Development and Disease Group, Ihnestr. 63-73, 14195 Berlin, Germany; Berlin-Brandenburg Center for Regenerative Therapies, Charité - Universitätsmedizin Berlin, Föhrerstr. 15, 13353 Berlin, Germany.
Papers in Europe PMC - 10Goudswaard L2 papers · 2025
Population Health Sciences, Bristol Medical School, ,
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.
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.
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 Chondrodysplasia with joint dislocations, gPAPP type — 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.
("Chondrodysplasia with joint dislocations, gPAPP type" OR "gPAPP deficiency") OR ("BPNT2" OR "BPNT2 syndrome" OR "BPNT2-related")ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Chondrodysplasia with joint dislocations, gPAPP type" OR "gPAPP deficiency"
Study-type breakdown: 0 interventional · 0 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 2026-07-27T11:54:52.136Z