A Unique Case of SCN2A Variant-Associated Catatonia and Response to Electroconvulsive Therapy
Bibliographic record
Abstract
ABSTRACT: The SCN2A gene encodes a subunit that forms part of voltage-gated sodium channels in the brain. Gain-of-function mutations are associated with epilepsy as well as numerous movement/motor abnormalities. Loss-of-function mutations may also cause epilepsy in addition to a variety of neurodevelopmental anomalies, including autism and intellectual disability. The occurrence of catatonia has also been described in 1 previous report that involved a 4-year-old boy. We describe a 20-year-old intellectually disabled female patient who developed recurrent catatonic symptoms in her teenage years that remitted with electroconvulsive therapy. This is only the second report of catatonia occurring in relation to an SCN2A mutation and the first involving a female. Moreover, this case is unique given our patient's later age of symptom onset and given that her symptoms responded well to electroconvulsive therapy.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.003 | 0.002 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".