A homozygous splicing mutation causing a depletion of skeletal muscle RYR1 is associated with multi-minicore disease congenital myopathy with ophthalmoplegia
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Bibliographic record
Abstract
The ryanodine receptor (RYR1) is an essential component of the calcium homeostasis of the skeletal muscle in mammals. Inactivation of the RYR1 gene in mice is lethal at birth. In humans only missense and in-frame mutations in the RYR1 gene have been associated so far with various muscle disorders including malignant hyperthermia, central core disease and the moderate form of multi-minicore disease (MmD). We identified a cryptic splicing mutation in the RYR1 gene that resulted in a 90% decrease of the normal RYR1 transcript in skeletal muscle. The 14646+2.99 kb A-->G mutation was associated with the classical form of MmD with ophthalmoplegia, whose genetic basis was previously unknown. The mutation present at a homozygous level was responsible for a massive depletion of the RYR1 protein in skeletal muscle. The mutation was not expressed in lymphoblastoid cells, pointing toward a tissue specific splicing mechanism. This first report of an out-of-frame mutation that affects the amount of RYR1 raised the question of the amount of RYR1 needed for skeletal muscle function in humans.
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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