Encephalopathy with Neuroserpin Inclusion Bodies Presenting as Progressive Myoclonus Epilepsy and Associated with a Novel Mutation in the <i>Proteinase Inhibitor 12</i> Gene
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Bibliographic record
Abstract
Neuroserpin encephalopathy is an autosomal-dominant degenerative disease associated with mutations in the Proteinase Inhibitor 12 (PI12) gene. A 26-year-old male presented with progressive myoclonus epilepsy and declining mental status. He had failed in university studies because of impaired attention, memory and concentration. Generalized seizures started to occur approximately once a month, and he developed myoclonus and progressive gait disturbances. Neuroimaging revealed mild atrophy and multiple periventricular white matter lesions, consistent with demyelination. He progressively declined and died at age 34. Neuropathologic examination revealed widespread involvement of the cerebral cortex by numerous round eosinophilic inclusions in neuronal perikarya and neuropil, predominantly within the deep cortical layers. Numerous inclusions were also found in the basal ganglia, thalamus, hippocampus, brain stem, spinal gray matter, and dorsal root ganglia. They were essentially absent from the cerebellum. The inclusions were immunopositive for antibodies raised against neuroserpin. The white matter lesions showed histologic features compatible with multiple sclerosis. Genetic analysis revealed a nucleotide substitution in codon 47 in one allele of the PI12 gene, resulting in a proline for leucine amino acid substitution (L47P). In summary, we report a case of neuroserpin encephalopathy associated with a novel PI12 mutation and complicated by coexistent multiple sclerosis.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it