Objective: To evaluate temporal trends in neoadjuvant chemotherapy (NAC) utilization and outcomes in patients with locally advanced upper tract urothelial carcinoma (UTUC).
Materials and Methods: We included 289 patients from six hospitals who underwent radical nephroureterectomy (RNU) for locally advanced UTUC (≧cT3 or cN+) between 2000 and 2020. These patients received RNU alone or 2-4 courses of NAC with either cisplatin- or carboplatin-based regimen. We evaluated the temporal changes in NAC use and compared the visceral recurrence-free, cancer-specific, and overall survival rates. The effect of NAC on oncological outcomes was examined using multivariate Cox regression analysis with inverse probability of treatment weighting (IPTW) models.
Results: Of 289 patients, 144 underwent NAC followed by RNU (NAC group) and 145 underwent RNU alone (Ctrl group). NAC use increased significantly from 14% (2000- 2010) to 68% (2011-2020). Pathological downstaging was significantly higher in the NAC group than in the Ctrl group. IPTW-adjusted multivariable analyses showed that NAC significantly improved the oncological outcomes in the NAC group compared with the Ctrl group. Moreover, carboplatin-based NAC significantly improved the oncological outcomes in the NAC group compared with the Ctrl group among patients with chronic kidney disease stage ≧3. There were no significant differences in oncological outcomes between the cisplatin- and carboplatin-based regimens.
Conclusions: NAC use for high-risk UTUC increased significantly after 2010. Platinum-based short-term NAC followed by immediate RNU may not impede and potentially improves oncological outcomes.
Background
Recently, some repots showed that immune-related adverse events (irAEs) caused by immune checkpoint inhibitors (ICIs) were correlated with favorable clinical outcome in patients with melanoma. However, in metastatic renal cell carcinoma (mRCC) patients, there have been few reports about the correlation between irAEs and clinical efficacy of anti-programmed cell death protein-1 (PD-1) therapy.
Patients and methods
We retrospectively investigated 160 mRCC patients who started nivolumab monotherapy between September 2016 and July 2019. IrAEs were defined as patients' AEs having a potential immunological basis that required close follow-up, or steroid therapy. We compared the data of patients who received nivolumab into two groups based on the occurrence of irAEs and assessed clinical efficacy in both groups.
Results
Of all mRCC patients, 47 patients (29.4%) developed irAEs. In patients who developed irAEs, the objective response rate and disease control rate were 38.8% and 77.6%, which were significantly higher when compared to that in patients without irAEs (p = 0.012 and p < 0.001, respectively). Furthermore, the incidence of irAEs were significantly associated with an increase in progression-free survival (PFS) (Hazard ratio (HR) = 0.4867; p = 0.0006) and overall survival (OS) (HR = 0.526; p = 0.0252). Importantly, PFS and OS seemed to be similar in patients who discontinued treatment because of irAEs and in those who did not discontinue because of irAEs (p = 0.36 and p = 0.35, respectively).
Conclusion
Development of irAEs robustly correlates with clinical benefit for mRCC patients receiving nivolumab monotherapy in real-world settings.
BACKGROUND: Based on results of the global phase 3 CheckMate 025 study, nivolumab (NIVO) was approved in Japan for patients with unresectable renal cell carcinoma (RCC) or metastatic renal cell carcinoma (mRCC) in 2016. However, the clinical characteristics of patients enrolled in this clinical study were limited. Thus, it is necessary to clarify outcomes of NIVO in patients with mRCC in a real-world setting in Japan.
OBJECTIVE: To evaluate the efficacy and treatment pattern of NIVO in patients with mRCC in clinical practice in Japan.
METHODS: This was a multicenter, non-interventional medical record review study conducted at 17 centers in Japan. This 36-month follow-up analysis included patients with mRCC treated with NIVO for the first time, between February 1 and October 31, in 2017. Endpoints included overall survival (OS), progression-free survival (PFS), and drug use information. Subgroup analyses by treatment line of NIVO or post-treatment following NIVO were also conducted.
RESULTS: Of 212 patients enrolled, 208 were eligible. Of those eligible, 76.0% were males, the mean age was 66.5 years, and 76.9% and 6.3% had RCC with a clear cell carcinoma and brain metastasis, respectively. The median OS was not reached (NR), median PFS was 7.1 months (95% confidence interval [CI]: 5.3-9.7), and the median duration of response was 21.6 months (95% CI: 8.3-NE [Not estimable]). Of the 208 evaluable patients, 36.5%, 30.8%, and 31.7% were treated with NIVO as the second, third, and fourth or later line, respectively, and the median OS for each line was not reached. The efficacy by other subgroups will also be shown in this presentation.
CONCLUSION: This study showed the long-term efficacy of NIVO treatment in Japanese patients with mRCC in real-world clinical practice, which was consistent with the results of CheckMate 025.