Enzyme-Replacement Therapy in a 5-Month-Old Boy With Attenuated Presymptomatic MPS I: 5-Year Follow-up
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Bibliographic record
Abstract
Mucopolysaccharidosis type I (MPS I) is a progressive and multisystemic disease, even in its attenuated Hurler-Scheie and Scheie forms. Clinical trials of enzyme-replacement therapy in MPS I have shown clinical benefit in patients with considerable preexisting disease, but no data exist on the effect of beginning enzyme replacement before the onset of significant clinical signs of disease. Here we present the 5-year follow-up of a boy with attenuated MPS I who had laronidase therapy initiated at the age of 5 months and compare his clinical course to that of his older sister, who began treatment at 5 years of age after she had developed typical signs of MPS I. After 5 years of treatment, the younger sibling has not developed any clinical manifestations of MPS I except for mild corneal clouding. In contrast, although many of the older sibling's clinical features have improved after 5 years of treatment, her dysostosis multiplex, cardiac valve involvement, and corneal clouding, although stabilized, have persisted. We suggest that early treatment of attenuated MPS I may significantly delay or prevent the onset of the major clinical signs, substantially modifying the natural history of the disease.
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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 | 0.001 |
| 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) | 0.000 | 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