Clinical trial · Observational
The Impact of Neoadjuvant Chemotherapy on Survival Outcomes in Patients With Variant Histologies Bladder Cancer Who Underwent Radical Cystectomy
The Impact of Neoadjuvant Chemotherapy on Survival Outcomes in Patients With Variant Histologies Who Underwent Radical Cystectomy: A Multicenter Study of the Turkish Urooncology Association
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
The World Health Organization 2016 bladder tumor classification reported that the diagnosis of variant histology has increased from 6% to 33% in the last 2 decades, and there is an increasing interest in investigating the effects on disease management, treatment options, and survival outcomes in bladder tumors with variant histology. In bladder tumors, variant histology is known to be more aggressive and has a worse prognosis than pure urothelial cancer, and most cases are muscle invasive at diagnosis. Neoadjuvant cisplatin-containing combination chemotherapy is known to improves overall survival in patients with urothelial cancers. However, it is unclear whether patients with non-pure urothelial cancer (variant) histology will also benefit from neoadjuvant chemotherapy. The investigators aimed to evaluate the role of Neoadjuvant cisplatin-containing combination chemotherapy in the final treatment plan and its impact on survival in patients with bladder cancer who were diagnosed with variant histology in the radical cystectomy specimen.
Conditions
Conditions (3)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Bladder Cancer | Malignant Bladder Neoplasm | CURATED_EXACT | 0.92 |
| Bladder Cancer Stage I | Malignant Bladder Neoplasm | CURATED_BROADER | 0.78 |
| Bladder Cancer Stage II | Malignant Bladder Neoplasm | CURATED_BROADER | 0.78 |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Cisplatin | Drug | Cisplatin | ALIAS |
Design
Arms and outcomes
Arms (2)
- label
- Neoadjuvant chemotherapy prior to radical cystectomy
- interventionNames
- Drug: Cisplatin
- label
- radical cystectomy directly
Primary outcomes (1)
- measure
- Change in survival outcomes at postoperative 2-year follow-up in patients with variant histology who received neoadjuvant chemotherapy before radical cystectomy.
- timeFrame
- 2 years from radical cystectomy surgery
Secondary outcomes (1)
- measure
- Factors associated with worse survival outcomes in cox-regression analysis at 2-year follow-up of all patients with variant histology who underwent radical cystectomy.
- timeFrame
- 2 years from radical cystectomy surgery
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 45 Years
- Maximum age
- 85 Years
Show eligibility criteria text
Inclusion Criteria: * Patients with squamous cell, micropapillary, nested variant, sarcomatoid, neuroendocrine, or plasmacytoid variant histology * Patients who were non-metastatic at diagnosis * Patients who completed staging and demographic data, * Patients with pathological stage (p)T2 or high grade pT1, clinical stage (c)N0 or cN1, and underwent radical cystectomy Exclusion Criteria: * Although RC histopathology was variant histology, patients in whom variant histology was not detected in previously transurethral resection bladder pathology * Patients who received therapies other than radical cystectomy (intravesical bacillus-calmette-guerin or chemotherapy) were excluded from the study. * Patients with a concomitant diagnosis of upper urinary tract urothelial carcinoma * Patients with histopathologically pure urothelial carcinoma
References
Publications (0)
Data not yet available