A novel fibrotic disorder associated with increased dermal fibroblast proliferation and downregulation of genes of the microfibrillar network
Bibliographic record
Abstract
Clinical evaluation of a young woman with subcutaneous fibrotic nodules, progressive distal joint contractures and marfanoid stature revealed a previously unrecognized fibrotic disorder characterized by several unique phenotypic features and some features overlapping with known disorders. Mutational analysis of the FBN1 and FBN2 genes excluded Marfan syndrome and congenital contractural arachnodactyly. MMP2 gene sequence analysis excluded multicentric osteolysis, nodulosis and arthropathy. The lack of mutations within the MAGP2 gene also excluded an MAGP2-associated disorder. In order to establish the mechanistic basis for the severe skin pathology noted in this patient, we performed transcriptional profiling of dermal fibroblasts, and candidate gene expression studies in conjunction with immunocytochemistry and cell-based and functional assays. Data from these experiments have further excluded any previously recognized fibrotic disorder and identified a unique pattern of gene expression in this patient consistent with progressive fibrosis. The pathogenic mechanisms included persistent proliferation of dermal fibroblasts in coexistence with a disarray of the microfibrillar network. Collagen accumulation, moreover, could be linked to extensive crosslinking resulting from increased activities of lysyl oxidases (LOX and LOXL), and lack of remodelling due to deficiencies in collagenolytic matrix metalloproteinases. The disorder may represent a novel syndrome in which transforming growth factor-β1-independent dermal fibrosis, unlike known microfibrillar disorders caused by single gene deficiencies, associates with a disarray of the microfibrillar network.
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How this classification was reachedexpand
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".