AstraZeneca plc (LON:AZN) and MSD’s Lynparza (olaparib) has been approved in Japan for the treatment of advanced ovarian, prostate and pancreatic cancers.
The three approvals authorise Lynparza for: maintenance treatment after 1st-line chemotherapy containing bevacizumab (genetical recombination) for patients with homologous recombination repair deficient (HRD) ovarian cancer; the treatment of patients with BRCA gene-mutated (BRCAm) castrate-resistant prostate cancer with distant metastasis (mCRPC); and as maintenance treatment after platinum-based chemotherapy for patients with BRCAm curatively unresectable pancreas cancer.
The concurrent approvals by the Japanese Ministry of Health, Labour, and Welfare are based on positive results from the PAOLA-1, PROfound and POLO Phase III trials, which each were published in The New England Journal of Medicine.
Dave Fredrickson, Executive Vice President, Oncology Business Unit, said: “These three approvals allow patients in Japan to be treated with Lynparza, a targeted treatment personalised to their specific biomarkers. They further underline the critical importance of biomarker testing at diagnosis, which helps physicians determine a course of treatment tailored to individual patients to substantially delay disease progression.”
Roy Baynes, Senior Vice President and Head of Global Clinical Development, Chief Medical Officer, MSD Research Laboratories, said: “For patients in Japan diagnosed with each of these types of cancer there are very few treatment options. Approvals for treatments such as Lynparza, the first PARP inhibitor to be approved in these specific types of metastatic castration-resistant prostate cancer and metastatic pancreatic cancer in Japan, enable us to advance this evolving era of personalised medicine and change how these cancers are treated.”
Lynparza in ovarian cancer
The approval as 1st-line maintenance treatment with bevacizumab for patients with HRD-positive advanced ovarian cancer is based on a biomarker subgroup analysis of the PAOLA-1 Phase III trial which showed Lynparza, in combination with bevacizumab maintenance treatment, demonstrated a substantial progression-free survival (PFS) improvement versus bevacizumab alone, for patients with HRD-positive advanced ovarian cancer.
In 2020, nearly 11,000 women in Japan were diagnosed with ovarian cancer, with more than 5,000 women dying of the disease.1 One in two women with advanced ovarian cancer has an HRD-positive tumour.2,3
Lynparza in prostate cancer
The approval for the treatment of BRCAm mCRPC is based on a subgroup analysis of the PROfound Phase III trial which showed Lynparza demonstrated a substantial improvement in radiographic progression-free survival (rPFS) and overall survival (OS) versus enzalutamide or abiraterone in men with BRCA1/2 mutations. Lynparza is the first and only PARP inhibitor approved in Japan in advanced prostate cancer.
Prostate cancer is the third most common type of cancer in Japan and in 2020, accounted for over 100,000 new cases.1 With limited treatment options, the average survival for men with mCRPC is only 9-13 months.8 Approximately 12% of men with mCRPC have a BRCA mutation,5 a subgroup of patients with a particularly poor prognosis.
Lynparza in pancreatic cancer
The approval for BRCAm metastatic pancreatic cancer is based on the results of the POLO Phase III trial which showed Lynparza demonstrated a statistically significant and clinically meaningful improvement in PFS versus placebo in patients with germline BRCAm metastatic pancreatic cancer. Lynparza is the first and only PARP inhibitor approved in this disease.
Pancreatic cancer has one of the lowest survival rates of the most common cancers and in Japan was responsible for almost 40,000 deaths in 2020 – the fourth most common cause of cancer death.1,5 Japan has the third-highest rate of pancreatic cancer in the world with 44,000 new cases diagnosed in 2020.1,6 Approximately 5-7% of patients with metastatic pancreatic cancer have a germline BRCA mutation.7
AstraZeneca and MSD are exploring additional trials in advanced prostate cancer including the ongoing PROpel Phase III trial testing Lynparza as a 1st-line treatment for patients with mCRPC in combination with abiraterone versus abiraterone alone. Data are anticipated in the second half of 2021. AstraZeneca is exploring additional trials in advanced ovarian cancer, including the DUO-O Phase III trial testing Imfinzi (durvalumab) in combination with chemotherapy and bevacizumab, followed by maintenance treatment with Imfinzi, bevacizumab, and Lynparza in newly diagnosed advanced ovarian cancer patients.
