Landau–Kleffner syndrome

a rare childhood neurological syndrome characterized by seizures and progressive loss of speech typically in a child with previous age-appropriate development
MedicalCondition designated_intractable_rare_disease Q1636310
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Landau–Kleffner syndrome

Summary

Landau–Kleffner syndrome is a designated intractable/rare disease[1]. It has Wikipedia articles in 15 language editions, a strong signal of global cultural recognition.[2]

Key Facts

  • Landau–Kleffner syndrome's instance of is recorded as designated intractable/rare disease[3].
  • Landau–Kleffner syndrome's instance of is recorded as rare disease[4].
  • Landau–Kleffner syndrome's instance of is recorded as class of disease[5].
  • William Landau is named after Landau–Kleffner syndrome[6].
  • Frank Kleffner is named after Landau–Kleffner syndrome[7].
  • Landau–Kleffner syndrome is a type of childhood electroclinical syndrome[8].
  • Landau–Kleffner syndrome is a type of disease[9].
  • Landau–Kleffner syndrome's external data available at URL is recorded as http://www.nanbyou.or.jp/entry/4411[10].
  • Landau–Kleffner syndrome's NCI Thesaurus ID is recorded as C84806[11].
  • Landau–Kleffner syndrome's health specialty is recorded as neurology[12].
  • Landau–Kleffner syndrome's health specialty is recorded as psychiatry[13].
  • Landau–Kleffner syndrome's genetic association is recorded as GRIN2A[14].
  • Landau–Kleffner syndrome's exact match is recorded as http://purl.obolibrary.org/obo/DOID_2538[15].
  • Landau–Kleffner syndrome's exact match is recorded as http://identifiers.org/doid/DOID:2538[16].
  • Landau–Kleffner syndrome's on focus list of Wikimedia project is recorded as WikiProject Medicine[17].

Why It Matters

Landau–Kleffner syndrome has Wikipedia articles in 15 language editions, a strong signal of global cultural recognition.[2] It is known by 15 alternative names across languages and contexts.[18]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] . ddrare.nibiohn.go.jp. Retrieved . ddrare.nibiohn.go.jp. Provenance: wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . Disease Ontology. Retrieved . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . ddrare.nibiohn.go.jp. Retrieved . ddrare.nibiohn.go.jp. Provenance: wikidata.org.
  9. [11] . Disease Ontology. Retrieved . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . Mutations in GRIN2A and GRIN2B encoding regulatory subunits of NMDA receptors cause variable neurodevelopmental phenotypes. Retrieved . platform.opentargets.org. Provenance: wikidata.org.
  13. [15] . Disease Ontology. Retrieved . wikidata.org.
  14. [16] . Identifiers.org. registry.identifiers.org. Provenance: wikidata.org.
  15. [17] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikidata sitelinks. wikidata.org.
  2. [18] . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Landau–Kleffner syndrome. Retrieved May 3, 2026, from https://4ort.xyz/entity/landau-kleffner-syndrome
MLA “Landau–Kleffner syndrome.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/landau-kleffner-syndrome.
BibTeX @misc{4ortxyz_landau-kleffner-syndrome_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Landau–Kleffner syndrome}}, year = {2026}, url = {https://4ort.xyz/entity/landau-kleffner-syndrome}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Landau–Kleffner syndrome — https://4ort.xyz/entity/landau-kleffner-syndrome (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/landau-kleffner-syndrome · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 6w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 1tkhzp
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  2. 7w ago · JhealdBatch bot · 2026-07-03 view diff on Wikidata ↗
    Subclass of childhood electroclinical syndrome, disease
    Named after
    Health specialty neurology, psychiatry
    Genetic association GRIN2A
    + 6 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/39732|batch #39732]]: rm redundant subclass"
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