Germline mutation rate in the hypervariable minisatellite CEB1 in the parents of children with leukaemia
Bibliographic record
Abstract
Gardner and colleagues advanced the hypothesis that the Seascale leukaemia cluster may have been caused by germ cell mutagenesis due parental preconceptional irradiation (PPI) of fathers working at the Sellafield nuclear installation. Recent evidence has shown that PPI can lead to an increased germline mutation rate in certain minisatellite loci, allowing previously undetectable levels of germline sensitivity to IR to be measured. In this study, we have investigated the hypothesis that childhood leukaemia may be associated with parental germ cell sensitivity detected by an increased parental germline minisatellite mutation rate. To test this we compared the germline mutation rate of the hypervariable minisatellite locus, CEB1 in family trios (both parents and their child) of children with leukaemia (n = 109) compared with normal families (n = 64). We found no significant difference in mean mutation rate of parents of children with leukaemia and control children (0.0414 vs 0.0887; P > 0.05). The majority of germline mutations (95%) were paternal, and unaffected by the presence of leukaemia cells in the sample. We found no significant differences in mean minisatellite allele size (72 vs 68 repeats; p > 0.05), or mutational spectrum (gains or losses of repeats) in the parents of case and control children. Although preliminary, our results suggest that childhood leukaemia is unlikely to be associated with increased germline minisatellite instability resulting from exposure of parental germ cells to mutagens such as IR.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 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 | 0.000 |
| 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".