ORPHA:637051
Borna virus encephalitis
Also known as: Bornavirus encephalitis
Publications
140
54.9th percentile
Trials
0
Interventional, condition-specific
Researchers
731
Distinct authors in sample
Gene link
—
Readiness
1/6
Stages with a signal
Clinical definition (Orphanet)
A rare infectious disease characterized by severe non-purulent meningoencephalitis caused by Borna disease virus 1 (BoDV-1). Patients present with fever, headache, malaise, and fatigue, followed after a few days by nausea, confusion and disorientation, and psychomotor slowing. , aphasia, dyspnea, multifocal myoclonic jerks, and paraplegia have been described. The condition is very often fatal after progress to lethargy, deteriorating brain stem reflexes, and coma. Examination of the cerebrospinal fluid reveals moderate lympho-monocytic pleocytosis and presence of BoDV-1 RNA.
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:0957421
- MeSH:D001890
- UMLS:C5816783
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.”
1/6 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
140 matched papers (84 in last 10 years) Source
- Phenotype characterisedNot found
No HPO disease–phenotype associations via Monarch for these Mondo IDs
- 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)
None returned for this Mondo ID. That often means “not linked under this ID,” not “no clinical features.”
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?
140
140 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.
140 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).
84 in the last 10 years · high confidence · 54.9th percentile (publications denominator)
Phrase hits: 43 · MeSH hits: 98
Who's working on it?
731
Distinct author names in 140 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.
- 01Tappe D14 papers · 2026
Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany.
Papers in Europe PMC - 02Pörtner K7 papers · 2025
Department of Infectious Disease Epidemiology, Robert Koch Institute, Berlin, Germany.
Papers in Europe PMC - 03Liesche-Starnecker F6 papers · 2026
Department of Neuropathology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
Papers in Europe PMC - 04Bilzer T5 papers · 2001Papers in Europe PMC
- 05Hausmann J5 papers · 2009
Department of Virology, Bavarian Nordic GmbH, Fraunhoferstrasse 13, D-82152 Martinsried, Germany. juergen.hausmann@bavarian-nordic.com
Papers in Europe PMC - 06Märkl B5 papers · 2026
Institute of Pathology, Medical Faculty, Augsburg University, Augsburg, Germany.
Papers in Europe PMC - 07Muntau B5 papers · 2026
Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany.
Papers in Europe PMC - 08Planz O5 papers · 2001
Institut für Virologie, Justus-Liebig-Universität, Giessen, Germany.
Papers in Europe PMC - 09Rubbenstroth D5 papers · 2025
Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany.
Papers in Europe PMC - 10Ruf V5 papers · 2023
Center for Neuropathology and Prion Research, Ludwig-Maximilians-University, Munich, Germany.
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 Borna virus encephalitis — 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.
"Borna virus encephalitis" OR "Bornavirus encephalitis"
MeSH descriptor terms unioned into the query: Borna Disease
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Borna virus encephalitis" OR "Bornavirus encephalitis" OR "Borna Disease"
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
Ingested 2026-07-27T19:30:53.385Z