| domain | established finding | suggested ontology mapping | evidence strength/limitation |
|---|---|---|---|
| nomenclature/classification | The current ILAE name is **Childhood Occipital Visual Epilepsy (COVE)**; it replaced **late-onset (benign) occipital epilepsy** / **idiopathic childhood occipital epilepsy–Gastaut type**. COVE is grouped among **self-limited focal epilepsies** with childhood onset; later reviews also note it among focal epilepsy syndromes with presumed complex inheritance. (pqac-00000000, pqac-00000001) | MONDO: not established here; MeSH/ICD: not established here; NCIT: epilepsy syndrome concept if needed | Strong for modern nomenclature/classification from ILAE-derived secondary sources; no disease-specific external identifier confirmed in available context, so none should be asserted. |
| core phenotype | COVE seizures are described as **occipital** seizures with **sensory visual symptoms** and **elementary visual phenomena**; broader ILAE review notes visual phenomena such as **hallucinations or blindness** in occipital epilepsies. Typical onset is in **childhood (2–12 years syndromic group)**. (pqac-00000001, pqac-00000002) | HPO suggestions: Visual hallucinations; Transient visual loss/blindness; Focal aware seizure; Childhood onset | Moderate: phenotype is directly stated, but exact frequency and age-distribution figures for COVE are not available in retrieved context. |
| EEG | ILAE update states the syndrome name reflects **occipital semiology and EEG findings**. Specific EEG morphology/mandatory criteria were not present in retrieved text. (pqac-00000001) | HPO suggestion: Abnormality of EEG; possible occipital epileptiform discharges (term not confirmed here) | Moderate-to-limited: syndrome-level association with occipital EEG findings is established, but exact interictal/ictal patterns are unavailable in accessible sources. |
| anatomy | Primary system affected is the **central nervous system**, especially the **occipital lobe/cortex** as the seizure-generating region implied by syndrome name and visual semiology. (pqac-00000002) | UBERON suggestions: brain; occipital lobe; visual cortex | Moderate: anatomy is strongly implied by syndrome definition, but no COVE-specific imaging-pathology localization dataset was available. |
| etiology/genetics | Available ILAE-derived review characterizes COVE among focal epilepsy syndromes with **presumed complex inheritance**. No single causal gene is established for COVE in the retrieved evidence. Adjacent **GRIN2A** evidence concerns epilepsy-aphasia syndromes and should **not** be treated as COVE-specific. (pqac-00000001, pqac-00000006, pqac-00000007) | Inheritance: multifactorial/complex; HGNC gene mapping: none established for COVE | Moderate for “complex inheritance” label; strong limitation against assigning monogenic causation based on current context. |
| environmental/protective factors | No specific environmental, infectious, toxic, or protective factors were identified in the retrieved COVE-focused evidence. | none established | Low/absent evidence in available sources. |
| pathophysiology/mechanism | Syndrome-level mechanism is best summarized as **focal occipital cortical hyperexcitability** producing elementary visual seizures; direct molecular pathway evidence specific to COVE was not retrieved. (pqac-00000002) | GO suggestion: regulation of membrane potential; neuronal action potential; CL suggestion: cortical excitatory neuron/inhibitory interneuron (generic only) | Limited: mechanistic inference is electroclinical, not molecularly resolved for COVE in available evidence. |
| disease course/prognosis | COVE belongs to the **self-limited focal epilepsies**. Review text states that **most cases remit in adolescence**, though **a small subset may have persistent seizures**. (pqac-00000002, pqac-00000004) | HPO suggestions: Episodic course; Remission in adolescence | Moderate-to-strong for overall favorable course; exact remission percentages were not available in retrieved accessible sources. |
| diagnosis/workup | Recognition of childhood-onset syndromes requires **seizure semiology**, **developmental status**, and **EEG features**; **brain MRI** and sometimes **genetic studies** may be used in selected cases. For COVE specifically, diagnosis is framed by **occipital semiology and EEG findings**. (pqac-00000001) | Diagnostic modality terms: EEG; Brain MRI | Strong for general workup principles from ILAE update; limited because mandatory/alert/exclusionary COVE criteria were not accessible in retrieved text. |
| differential diagnosis | The nomenclature change explicitly separates COVE from **self-limited epilepsy with autonomic seizures (SeLEAS/Panayiotopoulos syndrome)** and from **photosensitive occipital lobe epilepsy (POLE)**. SeLEAS emphasizes autonomic seizures; POLE emphasizes photic-induced visual seizures. (pqac-00000000, pqac-00000001, pqac-00000002) | Differential concepts: SeLEAS; POLE | Moderate: directly supported at syndrome-classification level; detailed bedside distinguishing criteria were not fully available. |
| treatment | No COVE-specific randomized trials or precision therapies were retrieved. As a self-limited focal epilepsy, treatment is generally antiseizure-medication based when needed, but the available context does not support a syndrome-specific preferred drug claim. (pqac-00000001, pqac-00000002) | NCIT suggestions: Anticonvulsant therapy; Electroencephalography; Magnetic Resonance Imaging | Limited: evidence supports management context but not a definitive drug algorithm from retrieved sources. |
| cognition/quality of life | The ILAE update emphasizes that the old term **benign** was replaced because self-limited focal epilepsies can still have **cognitive and behavioral comorbidities**; however, COVE-specific QoL metrics were not retrieved. (pqac-00000001) | HPO suggestions: Behavioral abnormality; Neurodevelopmental abnormality (generic only) | Moderate for possibility of comorbidity at syndrome-group level; limited for COVE-specific rates/severity. |
| imaging | MRI is part of the workup for childhood epilepsy syndromes when indicated, but no characteristic COVE-specific structural imaging biomarker was established in the retrieved evidence. Adjacent GRIN2A MRI findings are not COVE-specific. (pqac-00000001, pqac-00000006, pqac-00000007) | Brain MRI | Moderate for MRI role; low for disease-specific imaging signature. |
| omics/models unavailable | No COVE-specific **transcriptomic, proteomic, metabolomic, lipidomic, epigenomic, single-cell, spatial transcriptomic, or dedicated animal/cellular model** evidence was identified in the retrieved sources. Generic epilepsy models exist, but they are not disease-specific for COVE. (pqac-00000005) | GO/CL/model ontology: none established for COVE | Strong negative statement for retrieved evidence scope; absence here should be interpreted as “not found in available context,” not proof of nonexistence. |


*Table: This table condenses the evidence-supported knowledge base fields for Childhood Occipital Visual Epilepsy using only retrieved context. It highlights what is established, what can be mapped provisionally to ontologies, and where the evidence is currently limited or unavailable.*