Pembrolizumab Plus Lenvatinib in Unresectable Cutaneous Angiosarcoma Patients

"One course is fixed at 21 days, and the length of course is not extended or shortened.~Participants receive 200 mg of pembrolizumab injection intravenously over approximately 30 minutes on day 1 of each course, and take 20 mg of lenvatinib capsules orally once daily, preferably at the same time each day.~Treatment with pembrolizumab and lenvatinib will be continued for up to 35 courses unless the criteria for termination of protocol treatment are met."