Genetic Variation in Gs.ALPHA. Protein as a New Indicator in Screening Test for Vasovagal Syncope
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Bibliographic record
Abstract
BACKGROUND: A quantitative history using Calgary syncope syndrome score (CSSS) is able to define the likely cause of syncope, but there is still a lack of diagnostic screening tests for vasovagal syncope (VVS). The aim of the present study was to develop a screening test for VVS on the basis of CSSS and the relationship between polymorphic variants of the G-system signaling protein genes and tilting results. METHODS AND RESULTS: From 730 syncopal patients, 307 consecutive subjects without structural and electrical abnormalities were genotyped and examined on blood pressure (BP) and tilt testing. Genotyping was performed using polymerase chain reaction-restriction fragment length polymorphism in genes encoding Gsα-protein GNAS1 (rs7121), G-protein β 3 subunit (rs5443) and the cardiac regulator of G-protein signaling RGS2 (rs4606). The control group consisted of 100 healthy volunteers with a negative history of syncope. From multivariate regression analysis, being a carrier of 393T GNAS1 (odds ratio [OR], 2.29) and systolic BP (OR, 0.98) remained as independent factors associated with positive tilt results. The resultant screening test for VVS consisted of the following: carrier of 393T GNAS1; systolic BP < 131 mm Hg (from the receiver operating characteristic [ROC] curve); and CSSS ≥-2. Using ROC curve analysis for systolic BP and CSSS, 2 final models for the screening test were constructed: highest sensitivity (89%) and highest specificity (99%). CONCLUSIONS: The novel screening test including the variation of Gsα protein gene seems to be helpful to identify tilt-induced vasovagal patients.
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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 | 0.001 | 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