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ORPHA:93930

Classic bladder exstrophy

high confidenceSubtype of disorder

Also known as: Classic exstrophy of the bladder

Publications

4,201

94.1th percentile

Trials

7

Interventional, condition-specific

Researchers

918

Distinct authors in sample

Gene link

—

Readiness

2/6

Stages with a signal

Clinical definition (Orphanet)

A subtype of exstrophy-epispadias complex (EEC) characterized by an open bladder plate, epispadias and an anterior defect of the pelvis, pelvic floor and the abdominal wall.

How rare: 1-9 / 100 000 — about one to nine people per hundred thousand.

Orphanet entry

Cross-references

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

Additional Mondo synonyms (4)

bladder exstrophy · bladder exstrophy (disease) · classic exstrophy of the bladder · ectopia vesicae

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

An interventional trial matched this condition name on ClinicalTrials.gov — see trials below.

  1. Gene identifiedNot found

    No GenCC disease–gene assertion in this build

  2. LiteraturePresent

    4,201 matched papers (1,301 in last 10 years) Source

  3. Phenotype characterisedNot checked

    Not yet enriched from Monarch / HPO

  4. Animal modelNot checked

    Not yet enriched from Monarch / Alliance

  5. Orphan designationNot checked

    FDA/EMA orphan-drug designation not enriched yet

  6. Interventional trialPresent

    7 matched on ClinicalTrials.gov (3 recruiting in sample)

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)

Not enriched in this build — Monarch phenotype joins were not run for this record.

Animal models (Monarch / Alliance)

Not enriched in this build.

Literature

Is anyone studying this?

4,201

4,201 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=5449) is 41.

4,201 papers since the earliest indexed year in this search — median last-10-year count for a rare disease in this dataset is 41 (publications denominator n=5449).

1,301 in the last 10 years · high confidence · 94.1th percentile (publications denominator)

Phrase hits: 4,201 · MeSH hits: 135

Open Europe PMC search

Who's working on it?

918

Distinct author names in 200 sampled papers — named people below.

Who's working on it?

People publishing on this condition (sampled Europe PMC records). Affiliation is the most recent found in that sample.

  1. 01
    Gearhart JP34 papers · 2026

    The James Buchanan Brady Urological Institute, Division of Pediatric Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

    Papers in Europe PMC
  2. 02
    Haffar A17 papers · 2026

    The James Buchanan Brady Urological Institute, Division of Pediatric Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

    Papers in Europe PMC
  3. 03
    Crigger C12 papers · 2025

    Jeffs Division of Pediatric Urology, The Brady Urological Institute, Johns Hopkins Hospital, Baltimore, MD, USA. chad.b.crigger@gmail.com.

    Papers in Europe PMC
  4. 04
    Crigger CB11 papers · 2026

    The James Buchanan Brady Urological Institute, Division of Pediatric Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

    Papers in Europe PMC
  5. 05
    Di Carlo HN10 papers · 2026

    The James Buchanan Brady Urological Institute, Division of Pediatric Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

    Papers in Europe PMC
  6. 06
    Harris TGW9 papers · 2024

    Division of Plastic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD.

    Papers in Europe PMC
  7. 07
    Heap D7 papers · 2026

    Robert D. Jeffs Division of Pediatric Urology, James Buchanan Brady Urological Institutions, Johns Hopkins Hospital, Johns Hopkins Medical Institutions, Charlotte Bloomberg Children's Hospital, Baltimore, MD, USA.

    Papers in Europe PMC
  8. 08
    Maxon V7 papers · 2026

    The James Buchanan Brady Urological Institute, Division of Pediatric Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

    Papers in Europe PMC
  9. 09
    Morrill C7 papers · 2024

    James Buchanan Brady Urological Institute, Division of Pediatric Urology, Charlotte Bloomberg Children's Hospital, The Johns Hopkins University School of Medicine, Baltimore, MD.

    Papers in Europe PMC
  10. 10
    Morrill CC7 papers · 2024

    James Buchanan Brady Urological Institute, Jeffs Division of Pediatric Urology, Douglas A. Canning M.D. Exstrophy Database Center, Charlotte Bloomberg Children's Hospital, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

    Papers in Europe PMC

Clinical research

Is a treatment being tested?

7

interventional trials for this specific condition

7 interventional trials matched this specific condition name; 3 currently recruiting in our sample.

Data as of 27 July 2026

7 interventional trials — more than 73% of diseases in the trials denominator have none at all (5114 of 7003; this disease is at the 89.9th percentile).

high confidence · 89.9th percentile (trials denominator)

Recruiting interventional trials

From the matched ClinicalTrials.gov set

7 interventional trials matched after quoted-phrase search and title/condition post-filter.

Observational and natural-history studies

8 observational studies match 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

Open the complete matched search on ClinicalTrials.gov

Where to find support

We do not yet link condition-specific patient organisations. These umbrella groups support undiagnosed and ultra-rare families:

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.

"Classic bladder exstrophy" OR "Classic exstrophy of the bladder" OR "Classic exstrophy of bladder" OR "bladder exstrophy" OR "bladder exstrophy (disease)" OR "ectopia vesicae"

Run this search on Europe PMC

MeSH descriptor terms unioned into the query: Bladder Exstrophy

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

"Classic bladder exstrophy" OR "Classic exstrophy of the bladder" OR "Classic exstrophy of bladder" OR "bladder exstrophy" OR "bladder exstrophy (disease)" OR "ectopia vesicae"

Interventional trials matched via: both (mesh = registered under a MeSH descriptor no name phrase would catch; recall-expansion = gene / selected parent terms used only for trials).

Study-type breakdown: 7 interventional · 8 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

Ingested 2026-07-27T04:32:16.994Z