Upper tract urothelial cancer (UTUC) genomic profiling and correlation regarding benefit of platinum-based chemotherapy
Upper tract urothelial cancer (UTUC) are rare subsets of urothelial cancer, which typically present with more aggressive course. Molecular markers stratifying urothelial tumors as luminal subtype and non-luminal subtype tumors have been proposed to select patients who may have greater or lesser bene...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Open Exploration Publishing Inc.
2024-10-01
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| Series: | Exploration of Targeted Anti-tumor Therapy |
| Subjects: | |
| Online Access: | https://www.explorationpub.com/Journals/etat/Article/1002274 |
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| Summary: | Upper tract urothelial cancer (UTUC) are rare subsets of urothelial cancer, which typically present with more aggressive course. Molecular markers stratifying urothelial tumors as luminal subtype and non-luminal subtype tumors have been proposed to select patients who may have greater or lesser benefit from neoadjuvant systemic therapy in bladder cancer, though not yet evaluated in UTUC. Here, a single-institution study retrospectively obtained clinical and genomic information in patients with UTUC and evaluated four patient tumors using the Decipher Bladder® assay and Foundation Medicine® test. All four patients had non-luminal molecular subtype including basal (N = 4) and mixed basal/claudin-low (N = 2) subtypes. The best clinical response achieved was stable disease in a patient who had basal/claudin-low subtype with residual ypT3 after neoadjuvant chemotherapy. For the remaining three patients, all were treated with platinum-based chemotherapy for eventual metastatic disease but all three showed progressive disease with limited overall survival, highlighting their aggressive course. The non-luminal subtype and lack of FGFR alteration may partly explain the poor overall outcomes while the real-world benefit of next generation sequencing for clinical use in UTUC patients require further clarification in a larger cohort study. |
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| ISSN: | 2692-3114 |