ORPHA:2806
Subacute sclerosing leukoencephalitis
Also known as: Dawson encephalitis · SSPE · Subacute inclusion body encephalitis · Subacute sclerosing panencephalitis · Van Bogaert disease · Van Bogaert encephalitis
Publications
5,437
Trials
0
Interventional, condition-specific
Researchers
933
Distinct authors in sample
Gene link
—
Readiness
1/6
Stages with a signal
Clinical definition (Orphanet)
A rare infectious disease characterized by slowly brain disorder caused by a mutant measles virus, typically affecting children and young adults. The condition leads to cognitive decline, myoclonus, vision loss, and eventually a vegetative state.
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:0009835
- MeSH:D013344
- OMIM:260470
- UMLS:C0038522
- NCIT:C85171
Additional Mondo synonyms (3)
Immunosuppressive measles encephalitis · Subacute sclerosing panencephalitis (disorder) [ambiguous] · subacute sclerosing panencephalitis
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
5,437 matched papers (1,250 in last 10 years) Source
- Phenotype characterisedNot checked
Not yet enriched from Monarch / HPO
- Animal modelNot checked
Not yet enriched from Monarch / Alliance
- Orphan designationNot checked
FDA/EMA orphan-drug designation not enriched yet
- 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)
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?
5,437
5,437 papers — among the better-studied rare conditions, though still a fraction of common-disease literature (breast cancer: over 700,000). Median papers in the last 10 years for a rare disease in this dataset (publications denominator n=5449) is 41.
5,437 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).
1,250 in the last 10 years · low confidence
Phrase hits: 5,437 · MeSH hits: 0
Who's working on it?
933
Distinct author names in 200 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.
- 01Garg RK15 papers · 2026
Neurology, King George's Medical University, Lucknow, IND.
Papers in Europe PMC - 02Pandey S15 papers · 2026
Department of Neurology, King George Medical University, Lucknow, India.
Papers in Europe PMC - 03Garg D14 papers · 2026
Department of Neurology, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India.
Papers in Europe PMC - 04Rizvi I11 papers · 2026
Department of Neurology, King George Medical University, Lucknow, India.
Papers in Europe PMC - 05Kumar N9 papers · 2024
Department of Neurology, King George Medical University, Lucknow, India.
Papers in Europe PMC - 06Uniyal R8 papers · 2024
Department of Neurology, King George Medical University, Lucknow, India.
Papers in Europe PMC - 07Jain A7 papers · 2026
Department of Microbiology, King George Medical University, Lucknow, India.
Papers in Europe PMC - 08Malhotra HS7 papers · 2024
Department of Neurology, King George Medical University, Lucknow, India.
Papers in Europe PMC - 09Sharma S7 papers · 2026
Department of Pediatrics (Neurology Division), Lady Hardinge Medical College, New Delhi, India.
Papers in Europe PMC - 10Agarwal A6 papers · 2026
Department of Neurology, All India Institute of Medical Sciences, New Delhi, India.
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 27 July 2026
No matched interventional trials. This is true for 73% of diseases in the trials denominator (5114 of 7003). Here are the researchers publishing on it.
low confidence · 36.5th 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.
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 on the overview but are not added to the query string.
"Subacute sclerosing leukoencephalitis" OR "Dawson encephalitis" OR "Subacute inclusion body encephalitis" OR "Subacute sclerosing panencephalitis" OR "Van Bogaert disease" OR "Van Bogaert encephalitis" OR "Immunosuppressive measles encephalitis" OR "Subacute sclerosing panencephalitis (disorder) [ambiguous]"
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Subacute sclerosing leukoencephalitis" OR "Dawson encephalitis" OR "Subacute inclusion body encephalitis" OR "Subacute sclerosing panencephalitis" OR "Van Bogaert disease" OR "Van Bogaert encephalitis" OR "Immunosuppressive measles encephalitis" OR "Subacute sclerosing panencephalitis (disorder) [ambiguous]"
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
Synonyms dropped by stoplist: SSPE
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
- Publication count (5437) is implausibly high for prevalence class "<1 / 1 000 000" — treat as possible over-matching, not a measure of research intensity
Ingested 2026-07-26T21:16:19.445Z