ORPHA:269229
Pontine tegmental cap dysplasia
Also known as: PTCD
Clinical definition (Orphanet)
A rare syndrome with a brainstem as a major feature characterized by ventral pontine hypoplasia, dorsal cap projection into the forth ventricle and cranial nerve dysfunction. Clinical manifestations of multiple cranial nerves deficits, pyramidal and cerebellar signs include , , sensorineural deafness, reduced vision, language and speech disorders, feeding and swallowing difficulties, facial paralysis and . Various cardiac, gastrointestinal, genitourinary and skeletal defects have been sometimes 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.
Is anyone studying this?
91
91 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=183) is 38.
91 papers since the earliest indexed year in this search — median last-10-year count for a rare disease in this dataset is 38 (publications denominator n=183).
55 in the last 10 years · medium confidence · 56.6th percentile (publications denominator)
Is a treatment being tested?
0
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 26 July 2026
No matched interventional trials. This is true for 59.2% of diseases in the trials denominator (151 of 255). Here are the researchers publishing on it.
medium confidence · 29.6th percentile (trials denominator)
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.
Who's working on it?
467
Distinct author names in 91 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.
- 01Doherty D7 papers · 2025
Division of Genetic Medicine, Department of Pediatrics, University of Washington Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, WA, USA. ddoher@uw.edu
Papers in Europe PMC - 02Barkovich AJ6 papers · 2013
Neuroradiology Room L371, University of California at San Francisco, 505 Parnassus Avenue, San Francisco, CA 94143-0628, USA. Jim.Barkovich@radiology.ucsf.edu
Papers in Europe PMC - 03Boltshauser E5 papers · 2023
Division of Pediatric Neurology, University Children's Hospital, Zurich, Switzerland.
Papers in Europe PMC - 04Burglen L3 papers · 2023
Université Paris Cité, Developmental Brain Disorders Laboratory, Imagine Institute, INSERM UMR 1163, Paris 75015, France; Centre de Référence des Malformations et Maladies Congénitales du Cervelet, Département de Génétique, AP-HP, Sorbonne Université, Hôpital Trousseau, Paris 75012, France.
Papers in Europe PMC - 05Castillo M3 papers · 2019
Department of Radiology (M.C.), University of North Carolina, Chapel Hill, North Carolina.
Papers in Europe PMC - 06Desai NK3 papers · 2024
Department of Radiology, Division of Neuroradiology, Emory University School of Medicine and Children's Healthcare of Atlanta, Georgia 30322, USA. nilesh.k.desai@emory.edu
Papers in Europe PMC - 07Dobyns WB3 papers · 2025
Department of Pediatrics, University of Minnesota, Minneapolis, MN 55455, USA.
Papers in Europe PMC - 08Garel C3 papers · 2023
Service de Radiologie Pédiatrique, Hôpital Armand-Trousseau, Médecine Sorbonne Université, AP-HP, Paris 75012, France.
Papers in Europe PMC - 09Huisman TAGM3 papers · 2024
Edward B. Singleton Department of Radiology, Texas Children's Hospital and Baylor College of Medicine, Houston, TX 77030, USA.
Papers in Europe PMC - 10Mukherjee P3 papers · 2010
Department of Radiology, University of California, San Francisco, San Francisco, CA 94143-0628, USA. pratik@radiology.ucsf.edu
Papers in Europe PMC
Recruiting interventional trials
Trials testing a treatment 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 above — people publishing on this disease are often the practical next contact when no trial is listed.
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 2026-07-26This 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 below but are not added to the query string.
"Pontine tegmental cap dysplasia"
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Pontine tegmental cap dysplasia"
Study-type breakdown: 0 interventional · 0 observational · 0 expanded access. Only interventional studies enter the trial headline.
Cross-references (from Mondo): OMIM:614688 UMLS:C3541340
Query health: ok — strategies attempted: phrase; with hits: phrase
Run this search on ClinicalTrials.gov
Synonyms dropped by stoplist: PTCD
Confidence reasoning
- Preferred label is multi-word and distinctive
- 1 synonym(s) dropped by stoplist (may under-count)
- No label/synonym collisions with other diseases in this corpus