Despite the identification of some efficient drugs for the treatment of metastatic pancreatic cancer, this tumor remains one of the most lethal cancers and is characterized by a strong resistance to therapies. Pancreatic cancer has some unique features including the presence of a microenvironment filled with immunosuppressive mediators and a dense stroma, which is both a physical barrier to drug penetration and a dynamic entity involved in immune system control. Therefore, the immune system has been hypothesized to play an important role in pancreatic cancer. Thus, therapies acting on innate or adaptive immunity are being investigated. Here, we review the literature, report the most interesting results and hypothesize future treatment directions.
Data from 423 human epidermal growth factor receptor 2‐negative (HER2−), hormone receptor‐positive (HR+) advanced breast cancer (aBC) patients treated with palbociclib and endocrine therapy (ET) were provided by 35 Italian cancer centers and analyzed for treatment outcomes. Overall, 158 patients were treated in first line and 265 in second/later lines. We observed 19 complete responses and 112 partial responses. The overall response rate (ORR) was 31% (95% confidence interval [CI], 26.6–35.4) and clinical benefit was 52.7% (95% CI, 48–57.5). ORR was negatively affected by prior exposure to everolimus/exemestane (
p = 0.002) and favorably influenced by early line‐treatment (
p < 0.0001). At 6 months, median progression‐free survival was 12 months (95% CI, 8–16) and median overall survival was 24 months (95% CI, 17–30). More favorable outcomes were associated with palbociclib in early lines, no visceral metastases and no prior everolimus/exemestane. The main toxicity reported was neutropenia. Our results provide further support to the use of palbociclib with ET in HER2−, HR+ aBC. Differences in outcomes across patients subsets remain largely unexplained.
Pancreatic cancer is the fourth leading cause of cancer-related death worldwide. Extensive research has yielded advances in first-line treatment strategies, but there is no standardized second-line therapy. In this review, we examine the literature trying to establish a possible therapeutic algorithm.
Metastatic pancreatic cancer still represent one of the most deadly disease for which there are few therapeutic options, especially in second line and beyond setting. Nabpaclitaxel plus gemcitabine activity was demonstrated in first line setting, but there are no clear evidence suggesting its use after that. We report a retrospective data analysis of 23 patients who received nab-paclitaxel plus gemcitabine after first line treatment at our Oncology Department. We observed a significant clinical benefit (43,5%) with a median overall survival of 5 months. In addition, manageable side effects were reported. Our data, despite the small sample, seem to indicate that nab- paclitaxel plus gemcitabine is an active and well tolerated regimen even in pretreated patients.
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