Genome Sequencing Identifies a Heterozygous Deletion of <scp> <i>RBFOX2</i> </scp> in a Family With Congenital Heart Disease: A Case Report
Bibliographic record
Abstract
We report a 15-year-old female with hypoplastic left heart syndrome and a strong family history of congenital heart defects. Quad genome sequencing was performed following negative chromosomal microarray and congenital structural heart disease gene panel testing, revealing a heterozygous 144 kb deletion encompassing exons 4-14 of RBFOX2, the entirety of the APOL5 gene, and exon 3 of APOL6 in all affected family members. Although RBFOX2 has been implicated in causing hypoplastic left heart syndrome in animal models, and variants in this gene are enriched in patients with congenital heart disease, this report establishes loss-of-function variants in RBFOX2 as an autosomal dominant cause of hypoplastic left heart syndrome. Furthermore, this case highlights the power of genome sequencing in identifying causative variants in patients who have received nondiagnostic array and panel testing.
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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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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 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".