DOORwaY-90 Study for SIR-Spheres® Therapy as 1st-line Treatment for Hepatocellular Carcinoma Enrolls First Patient

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DOORwaY-90 Study: Sirtex Medical (“Sirtex”), a leading manufacturer of targeted liver cancer therapies, announced that the first patient has been enrolled in DOORwaY90, a study evaluating the safety and efficacy of selective internal radiation therapy (SIRT) using SIR-Spheres® Y-90 resin microspheres in patients with unresectable hepatocellular carcinoma (HCC).

DOORwaY90, which stands for “Duration of Objective Response with Arterial Y-90,” is the first prospective, U.S.-based multicenter, open-label single arm study of its kind. The study will assess the duration of response (DoR) and objective response rate (ORR) of SIR-Spheres. It is being led by co-principal investigators Cheenu Kappadath, PhD and Dr. Armeen Mahvash. Study enrollment is underway, with the first patient enrolled at Inland Imaging Associates and Providence Sacred Heart Medical Center in Spokane, Washington.

“We are thrilled to enroll the first patient in DOORwaY90,” said Dr. Mark A. Turco, Global Chief Medical Officer and EVP of Research and Development for Sirtex. “This clinical trial studying a heterogeneous population of patients with HCC using personalized dosimetry planning has the potential to advance the treatment of HCC patients worldwide. We are deeply thankful to every clinical investigator and patient who will be part of this groundbreaking journey.”

With a planned enrollment of 100 subjects across 15 sites both academic and non-academic, DOORwaY90 is enrolling patients with Barcelona Clinic Liver Cancer (BCLC) Stage A, B1 and B2 who are not eligible for resection or ablation at the time of study entry. The study is unique because it is the first FDA-approved U.S.-based prospective trial to utilize and delineate personalized dosimetry treatment planning and to define actionable post-treatment dosimetric verification for endpoint assessment.

“It’s important for physicians to have confidence that their planned Y-90 dose is being delivered in the right amount and to the right place,” said Dr. Douglas Murrey, Vascular and Interventional Radiologist at Inland Imaging Associates and Providence Sacred Heart Medical Center in Spokane, Washington. “The personalized dosimetry component of the DOORwaY90 study will provide meaningful insights to advance our practice and patient outcomes.”

HCC is often diagnosed when potentially curative resection or transplantation is not feasible. SIRT has the potential to deliver a lethal dose of radiation to hepatic tumors, while sparing surrounding healthy liver tissue. In countries outside the U.S., SIRT has been successfully used to bridge patients to transplantation or downstage HCC to within transplantation criteria or resection.

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