Sickle Cell Trait: Is It Always Benign?
Bibliographic record
Abstract
Sickle cell disease is a well-known homozygous inherited hemoglobinopathy that causes vaso-occlusive phenomena and chronic hemolysis. Vaso-occlusion results in sickle cell crisis and can eventually lead to complications involving multiple organ systems. However, the heterozygous counterpart, sickle cell trait (SCT) has less clinical significance as these patients are generally asymptomatic. This case series examines three unrelated patients with SCT ranging from the age of 27 to 61 years, who presented with pain in multiple long bones. Hemoglobin electrophoresis confirmed a diagnosis of SCT. Radiographic images of the affected sites showed osteonecrosis (ON). Interventions included pain management and bilateral hip replacement in two of the patients. Historically, vaso-occlusive disease in patients with SCT with no evidence of hemolysis or other hallmark findings of sickle cell disease is rare. There are limited reported cases of ON in SCT patients. Clinicians should explore other hemoglobinopathies not tested on routine hemoglobin electrophoresis and alternative risk factors for ON in these patients.
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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 | 0.001 | 0.012 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.003 | 0.002 |
| Insufficient payload (model declined to judge) | 0.003 | 0.002 |
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".