Successful treatment of refractory pyoderma gangrenosum with risankizumab in a 57-year-old patient: A case report
Bibliographic record
Abstract
Pyoderma gangrenosum is a neutrophilic dermatosis characterized by rapidly progressing inflammatory skin lesions. It is often associated with underlying systemic conditions, such as inflammatory bowel disease and rheumatoid arthritis. Patients typically present with erythematous papules and pustules that rapidly evolve into painful ulcers, most commonly affecting the lower extremities. In this case report, we describe a 57-year-old female patient with multirefractory pyoderma gangrenosum localized to the lower left leg. The diagnosis was confirmed based on clinical and histopathological features, with a skin biopsy showing compatible findings. Initial treatments, including topical therapies (high-potency steroids, dapsone, and calcineurin inhibitors) and conventional systemic immunosuppressive therapies (corticosteroids and tumor necrosis factor inhibitors), failed to produce significant improvement. However, treatment with risankizumab, an interleukin-23 inhibitor, resulted in substantial ulcer healing over a few weeks and ultimately led to complete resolution.
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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 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.004 | 0.002 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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".