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Regorafenib: carving a niche in the crowded therapeutic landscape
Bhawna Sirohi1, Deepa Susan Philip, Shailesh V Shrikhande
1Department of Medical Oncology, Tata Memorial Centre, Mumbai, India. bhawna.sirohi@btinternet.com
Abstract:
The oral multikinase inhibitor regorafenib targets both tumor cell proliferation and vasculature and is active in heavily pretreated patients with metastatic colorectal cancer, for which the US FDA granted its approval in September 2012. The benefit for regorafenib was seen in these patients in most prespecified subgroups. The drug is also being used in other tumor types where it has shown exciting potential especially in gastrointestinal stromal tumors. The drug is well tolerated but requires close monitoring during administration. Common side effects include asthenia/tiredness, loss of appetite, hand-foot skin syndrome, diarrhea, mucositis, weight loss, infections, hypertension and rash. Serious adverse events to look out for are liver toxicity, hemorrhage and gastrointestinal perforation. Biomarker data should help us to optimize the use of these drugs to select which patients are most likely to benefit.
Insights
Regorafenib is an oral multikinase inhibitor effective for metastatic colorectal cancer in pretreated patients. Close monitoring is essential due to potential side effects, but biomarkers may optimize patient selection for better outcomes.
Area of Science:
- Oncology
- Pharmacology
Background:
- Metastatic colorectal cancer (mCRC) presents challenges in heavily pretreated populations.
- Regorafenib, an oral multikinase inhibitor, targets tumor proliferation and vasculature.
Purpose of the Study:
- To review the efficacy and safety of regorafenib in metastatic colorectal cancer.
- To explore its potential in other tumor types, such as gastrointestinal stromal tumors (GIST).
Main Methods:
- Review of clinical data and FDA approval information for regorafenib in mCRC.
- Assessment of reported side effects and serious adverse events.
- Consideration of biomarker data for treatment optimization.
Main Results:
- Regorafenib demonstrated activity in heavily pretreated mCRC patients, with benefits observed across most subgroups.
- The drug is also showing potential in other cancers like GIST.
- Common side effects include fatigue, rash, and diarrhea; serious events involve liver toxicity and hemorrhage.
Conclusions:
- Regorafenib is an approved treatment option for pretreated mCRC patients.
- Careful patient monitoring is crucial due to potential adverse events.
- Biomarker research is key to personalizing regorafenib therapy and improving patient selection.
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