Mutational Analysis of SDCCAG8 in Bardet-Biedl Syndrome Patients with Renal Involvement and Absent Polydactyly
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Bibliographic record
Abstract
PURPOSE: To assess for SDCCAG8 mutations in Bardet-Biedl syndrome (BBS) subjects with renal involvement and no polydactyly, and to describe phenotypic characteristics of SDCCAG8-related disease. MATERIAL AND METHODS: Five patients (from 4 pedigrees) with clinical diagnosis of BBS, who had retinal and renal involvement and no polydactyly, were assessed. Sequence analysis of SDCCAG8 was undertaken and a detailed clinical review of an affected sibship was performed. RESULTS: A sibship of East Indian origin who carried a putative clinical diagnosis of BBS had compound heterozygous mutations in SDCCAG8 (p.Thr482LysfsX12/p.Asp543AlafsX24). The renal involvement was early and required transplant in both cases. Both were short statured and had asthma since childhood. The younger sister also had non-alcoholic fatty liver disease. Visual acuity and central fields were preserved in the teenage years in both patients. The optical coherence tomography showed preservation of the retinal lamination at the fovea; fundus autofluorescence demonstrated a perifoveal ring of hyperfluorescence as commonly observed in other forms of retinitis pigmentosa. Full-field electroretinogram revealed rod function to be more severely affected than cone function in both cases. CONCLUSION: Our results and prior literature suggest that SDCCAG8 could play an important role in presumed BBS patients affected with severe kidney disease and absent polydactyly. This report enhances the phenotypic description of SDCCAG8-related 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 | 0.000 |
| 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