Novel <i>GNE</i> Mutations in Hereditary Inclusion Body Myopathy Patients of Non-Middle Eastern Descent
Why this work is in the frame
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Bibliographic record
Abstract
Autosomal recessive hereditary inclusion body myopathy (HIBM or IBM2) is a progressive adult onset muscle wasting disorder characterized by sparing of the quadriceps. IBM2 is also known as distal myopathy with rimmed vacuoles or nonaka myopathy. IBM2 is associated with mutations in the UDP-GlcNAc 2-Epimerase/ManNAc Kinase gene (GNE). GNE is the rate-limiting enzyme of N-Acetylneuraminate (Neu5Ac, Sialic acid) biosynthesis. The GNE coding region of 64 symptomatic patients were sequenced. Twenty-eight patients were found to bear GNE mutations. Ten novel mutations were identified among nine patients, including four nonsense (p.R8X, p.W204X, p.Q436X, and p.S615X) and five missense (p.R71W, p.I142T, p.I298T, p.L556S, and p.E2G) variations spanning both the epimerase and kinase domains of GNE. Additionally, a synonymous variation (p.Y591Y, codon tac > tat) was seen in a patient bearing compound heterozygous nonsynonymous mutations (p.S615X and p.Y675H). Six of the nine are Caucasian, one patient is Taiwanese, one patient is Asian Indian, and one patient is of European descent. These findings further expand the clinical and genetic spectrum of IBM2.
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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