Association of the iPLA2β gene with bipolar disorder and assessment of its interaction with TRPM2 gene polymorphisms
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Bibliographic record
Abstract
Altered intracellular calcium homeostasis and oxidative stress are involved in the pathophysiology of bipolar disorder (BD)-I. To explore the genes contributing to these abnormalities, we examined the association with BD of the iPLA2β (PLA2G6), a signaling enzyme that mobilizes the arachidonic acid signaling cascade and activates oxidative stress, and assessed whether it interacts genetically with type 2 transient receptor potential channel gene (TRPM2), an oxidative stress-responsive calcium channel implicated both functionally and genetically in BD-I. Two tag single nucleotide polymorphisms rs4375 and rs3788533 in iPLA2β were genotyped in 446 White case-control individuals and 296 BD families using a 5'-nuclease TaqMan assay. The results were analyzed using χ-test and transmission disequilibrium tests, and Haploview. In a secondary analysis, we tested gene-gene interactions between TRPM2 and iPLA2β on BD vulnerability by logistic regression using a case-only design in PLINK. iPLA2β-rs3788533 showed a borderline association with BD-I in patients with a history of psychosis in both case-control and family designs. Association with BD as a whole was observed in the family study (significant over transmissions of rs3788533-allele C, P=0.015, PBonferroni=0.03, TDTPHASE). A borderline interaction was found between rs749909 within TRPM2 and rs4375 within iPLA2β (Puncorrected=0.009), on the basis of the case-only design analyzed with PLINK. A significant association of iPLA2β variants with BD-I and a trend gene-gene interaction between iPLA2β and TRPM2 provides additional support for the notion that genetic variation in these two functionally implicated candidates contributes toward the risk and pathophysiology of this illness.
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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