The frequency of inactive sucrase-isomaltase variant in indigenous populations of Northeast Asia
Bibliographic record
Abstract
The AG dinucleotide deletion at the rs781470490 locus of the sucrase-isomaltase gene (SI gene), common in the Eskimo people of Canada and Greenland, was screened in the indigenous populations of Northeast Asia (among Chukchi, Koryaks, Evens, and Evenks). Deletion was detected at the frequency of 14.3% (95% confidence interval (CI): 4.7–33.6%) in Chukchi, 7.3% (95% CI: 3.4–14.3%) in Koryaks, and 3.5% (95% CI: 1.3–8.5%) in Evens. Since the deletion at the rs781470490 locus leads to premature termination of the sucrase-isomaltase synthesis and, accordingly, to the appearance of an inactive form of the enzyme, it is suggested that its wide prevalence in populations of the Far North of America and Asia is associated with adaptation to an Arctic diet deficient in sucrose.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 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 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".