A novel <i>RBMX‐TFE3</i> gene fusion in a highly aggressive pediatric renal perivascular epithelioid cell tumor
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Bibliographic record
Abstract
We report an Xp11 translocation perivascular epithelioid cell tumor (PEComa) with a novel RBMX-TFE3 gene fusion, resulting from a paracentric X chromosome inversion, inv(X)(p11;q26). The neoplasm occurred in an otherwise healthy 12-year-old boy who presented with a large left renal mass with extension into the inferior vena cava. The patient was found to have multiple pulmonary metastases at diagnosis and died of disease 3 months later. The morphology (epithelioid clear cells with alveolar and nested architecture) and immunophenotype (TFE3 and HMB45 strongly positive; actin, desmin, and PAX8 negative) was typical of an Xp11 translocation PEComa; however, TFE3 rearrangement was initially not detected by routine TFE3 break-apart fluorescence in situ hybridization (FISH). Further RNA sequencing revealed a novel RBMX-TFE3 gene fusion, which was subsequently confirmed by fusion assay FISH, using custom design RBMX and TFE3 come-together probes. This report describes a novel TFE3 gene fusion partner, RBMX, in a pediatric renal PEComa patient associated with a fulminant clinical course. As documented in other intrachromosomal Xp11.2 inversions, such as fusions with NONO, RBM10, or GRIPAP1 genes, the TFE3 break-apart might be below the FISH resolution, resulting in a false negative result.
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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) | 0.001 | 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) | 0.001 | 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