High Cerebrospinal <scp>DOPA</scp> Decarboxylase Level Predicts Cognitive Decline in Parkinson's Disease
Bibliographic record
Abstract
BACKGROUND: DOPA decarboxylase (DDC) in cerebrospinal fluid (CSF) is an emerging Parkinson's disease (PD) biomarker, but its association with nonmotor symptoms is unclear. OBJECTIVES: We aimed to determine if baseline DDC was associated with future cognitive decline in PD. METHODS: We correlated baseline CSF DDC, detected using the proximity extension assay, with Montreal Cognitive Assessment (MoCA) score using longitudinal data from 3 cohorts: Biopark, PPMI, and PDBP. RESULTS: DDC was significantly associated with cognitive decline in both the Biopark cohort (P-value < 0.0001) and the PDBP/PPMI cohorts (P-value < 0.0001). The results were still significant after correcting for levodopa-equivalent daily dose in the Biopark cohort (P-value < 0.0001) and when the analysis was restricted to the de novo subjects, both in Biopark (P-value: 0.0065) and PPMI (P-value<0.0001) cohorts. CONCLUSIONS: CSF DDC is a potential biomarker for the prediction of cognitive decline in PD patients.
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How this classification was reachedexpand
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 | 0.001 | 0.016 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".