LYNPARZA� (olaparib) Receives Three New Approvals in Japan

Approvals in Three Types of Cancer Are Based on the PAOLA-1, PROfound and POLO Phase 3 Trials

KENILWORTH, N.J.–(BUSINESS WIRE)–$MRK #MRK–AstraZeneca and Merck (NYSE: MRK), known as MSD outside the United States and Canada, today announced that LYNPARZA has been approved in Japan for the treatment of three types of advanced cancer: ovarian, prostate and pancreatic cancer. The three approvals authorize LYNPARZA for use as maintenance treatment after first-line chemotherapy containing bevacizumab (genetical recombination) in patients with homologous recombination repair deficient (HRD) ovarian cancer; the treatment of patients with BRCA gene-mutated (BRCAm) castration-resistant prostate cancer with distant metastasis (mCRPC); and maintenance treatment after platinum-based chemotherapy for patients with BRCAm curatively unresectable pancreas cancer.

The concurrent approvals by the Japanese Ministry of Health, Labor, and Welfare are based on results from the PAOLA-1, PROfound and POLO Phase 3 trials, which each were published in The New England Journal of Medicine.

Dave Fredrickson, executive vice president, oncology business unit, AstraZeneca, said, �These three approvals allow patients in Japan to be treated with LYNPARZA, a targeted treatment personalized 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 their individual patients to substantially delay disease progression.”

Dr. Roy Baynes, senior vice president and head of global clinical development, chief medical officer, Merck 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 personalized medicine and change how these cancers are treated.”

LYNPARZA Approved as Maintenance Treatment After First-Line Chemotherapy Containing Bevacizumab (Genetical Recombination) in Patients with HRD-Positive Ovarian Cancer

The approval is based on a biomarker subgroup analysis of the PAOLA-1 Phase 3 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.

LYNPARZA Approved for the Treatment of BRCAm Castration-Resistant Prostate Cancer with Distant Metastasis

The approval is based on a subgroup analysis of the PROfound Phase 3 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 mCRPC.

Prostate cancer is the third most common type of cancer in Japan and in 2020, accounted for over 100,000 new cases.

LYNPARZA Approved as Maintenance Treatment After Platinum-Based Chemotherapy for Patients with BRCAm Curatively Unresectable Pancreas Cancer

The approval is based on the results of the POLO Phase 3 trial which showed LYNPARZA demonstrated a statistically significant and clinically meaningful improvement in PFS versus placebo in patients with gBRCAm metastatic pancreatic cancer. LYNPARZA is the first and only PARP inhibitor approved in Japan 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. Japan has the third-highest rate of pancreatic cancer in the world with 44,000 new cases diagnosed in 2020.

AstraZeneca and Merck are exploring additional trials in advanced prostate cancers including the ongoing PROpel Phase 3 trial testing LYNPARZA as a first-line treatment for patients with mCRPC in combination with abiraterone versus abiraterone alone. Data are anticipated in the second half of 2021. Outside the collaboration, Merck is exploring additional trials in advanced ovarian cancer including the Phase 3 KEYLYNK-001 trial evaluating KEYTRUDA in combination with chemotherapy, followed by maintenance LYNPARZA, for the first-line treatment of women with BRCA non-mutated advanced ovarian cancer.

IMPORTANT SAFETY INFORMATION

CONTRAINDICATIONS

There are no contraindications for LYNPARZA.

WARNINGS AND PRECAUTIONS

Myelodysplastic Syndrome/Acute Myeloid Leukemia (MDS/AML): Occurred in <1.5% of patients exposed to LYNPARZA monotherapy, and the majority of events had a fatal outcome. The duration of therapy in patients who developed secondary MDS/AML varied from <6 months to >2 years. All of these patients had previous chemotherapy with platinum agents and/or other DNA-damaging agents, including radiotherapy, and some also had a history of more than one primary malignancy or of bone marrow dysplasia.

Do not start LYNPARZA until patients have recovered from hematological toxicity caused by previous chemotherapy (?Grade 1). Monitor complete blood count for cytopenia at baseline and monthly thereafter for clinically significant changes during treatment. For prolonged hematological toxicities, interrupt LYNPARZA and monitor blood count weekly until recovery.

If the levels have not recovered to Grade 1 or less after 4 weeks, refer the patient to a hematologist for further investigations, including bone marrow analysis and blood sample for cytogenetics. Discontinue LYNPARZA if MDS/AML is confirmed.

Pneumonitis: Occurred in <1% of patients exposed to LYNPARZA, and some cases were fatal. If patients present with new or worsening respiratory symptoms such as dyspnea, cough, and fever, or a radiological abnormality occurs, interrupt LYNPARZA treatment and initiate prompt investigation. Discontinue LYNPARZA if pneumonitis is confirmed and treat patient appropriately.

Embryo-Fetal Toxicity: Based on its mechanism of action and findings in animals, LYNPARZA can cause fetal harm. A pregnancy test is recommended for females of reproductive potential prior to initiating treatment.

Females

Advise females of reproductive potential of the potential risk to a fetus and to use effective contraception during treatment and for 6 months following the last dose.

Males

Advise male patients with female partners of reproductive potential or who are pregnant to use effective contraception during treatment and for 3 months following the last dose of LYNPARZA and to not donate sperm during this time.

Venous Thromboembolic Events: Including pulmonary embolism, occurred in 7% of patients with metastatic castration-resistant prostate cancer who received LYNPARZA plus androgen deprivation therapy (ADT) compared to 3.1% of patients receiving enzalutamide or abiraterone plus ADT in the PROfound study. Patients receiving LYNPARZA and ADT had a 6% incidence of pulmonary embolism compared to 0.8% of patients treated with ADT plus either enzalutamide or abiraterone. Monitor patients for signs and symptoms of venous thrombosis and pulmonary embolism, and treat as medically appropriate, which may include long-term anticoagulation as clinically indicated.

ADVERSE REACTIONS—First-Line Maintenance BRCAm Advanced Ovarian Cancer

Most common adverse reactions (Grades 1-4) in ?10% of patients in clinical trials of LYNPARZA in the first-line maintenance setting for SOLO-1 were: nausea (77%), fatigue (67%), abdominal pain (45%), vomiting (40%), anemia (38%), diarrhea (37%), constipation (28%), upper respiratory tract infection/influenza/ nasopharyngitis/bronchitis (28%), dysgeusia (26%), decreased appetite (20%), dizziness (20%), neutropenia (17%), dyspepsia (17%), dyspnea (15%), leukopenia (13%), UTI (13%), thrombocytopenia (11%), and stomatitis (11%).

Most common laboratory abnormalities (Grades 1-4) in ?25% of patients in clinical trials of LYNPARZA in the first-line maintenance setting for SOLO-1 were: decrease in hemoglobin (87%), increase in mean corpuscular volume (87%), decrease in leukocytes (70%), decrease in lymphocytes (67%), decrease in absolute neutrophil count (51%), decrease in platelets (35%), and increase in serum creatinine (34%).

ADVERSE REACTIONS—First-Line Maintenance Advanced Ovarian Cancer in Combination with Bevacizumab

Most common adverse reactions (Grades 1-4) in ?10% of patients treated with LYNPARZA/bevacizumab compared to a ?5% frequency for placebo/bevacizumab in the first-line maintenance setting for PAOLA-1 were: nausea (53%), fatigue (including asthenia) (53%), anemia (41%), lymphopenia (24%), vomiting (22%) and leukopenia (18%). In addition, the most common adverse reactions (?10%) for patients receiving LYNPARZA/bevacizumab irrespective of the frequency compared with the placebo/bevacizumab arm were: diarrhea (18%), neutropenia (18%), urinary tract infection (15%), and headache (14%).

In addition, venous thromboembolic events occurred more commonly in patients receiving LYNPARZA/bevacizumab (5%) than in those receiving placebo/bevacizumab (1.9%).

Most common laboratory abnormalities (Grades 1-4) in ?25% of patients for LYNPARZA in combination with bevacizumab in the first-line maintenance setting for PAOLA-1 were: decrease in hemoglobin (79%), decrease in lymphocytes (63%), increase in serum creatinine (61%), decrease in leukocytes (59%), decrease in absolute neutrophil count (35%), and decrease in platelets (35%).

ADVERSE REACTIONS—Maintenance Recurrent Ovarian Cancer

Most common adverse reactions (Grades 1-4) in ?20% of patients in clinical trials of LYNPARZA in the maintenance setting for SOLO-2 were: nausea (76%), fatigue (including asthenia) (66%), anemia (44%), vomiting (37%), nasopharyngitis/upper respiratory tract infection (URI)/influenza (36%), diarrhea (33%), arthralgia/myalgia (30%), dysgeusia (27%), headache (26%), decreased appetite (22%), and stomatitis (20%).

Study 19: nausea (71%), fatigue (including asthenia) (63%), vomiting (35%), diarrhea (28%), anemia (23%), respiratory tract infection (22%), constipation (22%), headache (21%), decreased appetite (21%), and dyspepsia (20%).

Most common laboratory abnormalities (Grades 1-4) in ?25% of patients in clinical trials of LYNPARZA in the maintenance setting (SOLO-2/Study 19) were: increase in mean corpuscular volume (89%/82%), decrease in hemoglobin (83%/82%), decrease in leukocytes (69%/58%), decrease in lymphocytes (67%/52%), decrease in absolute neutrophil count (51%/47%), increase in serum creatinine (44%/45%), and decrease in platelets (42%/36%).

ADVERSE REACTIONS—Advanced gBRCAm Ovarian Cancer

Most common adverse reactions (Grades 1-4) in ?20% of patients in clinical trials of LYNPARZA for advanced gBRCAm ovarian cancer after 3 or more lines of chemotherapy (pooled from 6 studies) were: fatigue/asthenia (66%), nausea (64%), vomiting (43%), anemia (34%), diarrhea (31%), nasopharyngitis/upper respiratory tract infection (URI) (26%), dyspepsia (25%), myalgia (22%), decreased appetite (22%), and arthralgia/musculoskeletal pain (21%).

Most common laboratory abnormalities (Grades 1-4) in ?25% of patients in clinical trials of LYNPARZA for advanced gBRCAm ovarian cancer (pooled from 6 studies) were: decrease in hemoglobin (90%), mean corpuscular volume elevation (57%), decrease in lymphocytes (56%), increase in serum creatinine (30%), decrease in platelets (30%), and decrease in absolute neutrophil count (25%).

ADVERSE REACTIONS—gBRCAm, HER2-negative Metastatic Breast Cancer

Most common adverse reactions (Grades 1-4) in ?20% of patients in OlympiAD were: nausea (58%), anemia (40%), fatigue (including asthenia) (37%), vomiting (30%), neutropenia (27%), respiratory tract infection (27%), leukopenia (25%), diarrhea (21%), and headache (20%).

Most common laboratory abnormalities (Grades 1-4) in >25% of patients in OlympiAD were: decrease in hemoglobin (82%), decrease in lymphocytes (73%), decrease in leukocytes (71%), increase in mean corpuscular volume (71%), decrease in absolute neutrophil count (46%), and decrease in platelets (33%).

ADVERSE REACTIONS—First-Line Maintenance gBRCAm Metastatic Pancreatic Adenocarcinoma

Most common adverse reactions (Grades 1-4) in ?10% of patients in clinical trials of LYNPARZA in the first-line maintenance setting for POLO were: fatigue (60%), nausea (45%), abdominal pain (34%), diarrhea (29%), anemia (27%), decreased appetite (25%), constipation (23%), vomiting (20%), back pain (19%), arthralgia (15%), rash (15%), thrombocytopenia (14%), dyspnea (13%), neutropenia (12%), nasopharyngitis (12%), dysgeusia (11%), and stomatitis (10%).

Most common laboratory abnormalities (Grades 1-4) in ?25% of patients in clinical trials of LYNPARZA in the first-line maintenance setting for POLO were: increase in serum creatinine (99%), decrease in hemoglobin (86%), increase in mean corpuscular volume (71%), decrease in lymphocytes (61%), decrease in platelets (56%), decrease in leukocytes (50%), and decrease in absolute neutrophil count (25%).

ADVERSE REACTIONS—HRR Gene-mutated Metastatic Castration Resistant Prostate Cancer

Most common adverse reactions (Grades 1-4) in ?10% of patients in clinical trials of LYNPARZA for PROfound were: anemia (46%), fatigue (including asthenia) (41%), nausea (41%), decreased appetite (30%), diarrhea (21%), vomiting (18%), thrombocytopenia (12%), cough (11%), and dyspnea (10%).

Most common laboratory abnormalities (Grades 1-4) in ?25% of patients in clinical trials of LYNPARZA for PROfound were: decrease in hemoglobin (98%), decrease in lymphocytes (62%), decrease in leukocytes (53%), and decrease in absolute neutrophil count (34%).

DRUG INTERACTIONS

Anticancer Agents: Clinical studies of LYNPARZA with other myelosuppressive anticancer agents, including DNA-damaging agents, indicate a potentiation and prolongation of myelosuppressive toxicity.

CYP3A Inhibitors: Avoid coadministration of strong or moderate CYP3A inhibitors when using LYNPARZA. If a strong or moderate CYP3A inhibitor must be coadministered, reduce the dose of LYNPARZA. Advise patients to avoid grapefruit, grapefruit juice, Seville oranges, and Seville orange juice during LYNPARZA treatment.

CYP3A Inducers: Avoid coadministration of strong or moderate CYP3A inducers when using LYNPARZA.

USE IN SPECIFIC POPULATIONS

Lactation: No data are available regarding the presence of olaparib in human milk, its effects on the breastfed infant or on milk production. Because of the potential for serious adverse reactions in the breastfed infant, advise a lactating woman not to breastfeed during treatment with LYNPARZA and for 1 month after receiving the final dose.

Pediatric Use: The safety and efficacy of LYNPARZA have not been established in pediatric patients.

Hepatic Impairment: No adjustment to the starting dose is required in patients with mild or moderate hepatic impairment (Child-Pugh classification A and B). There are no data in patients with severe hepatic impairment (Child-Pugh classification C).

Renal Impairment: No dosage modification is recommended in patients with mild renal impairment (CLcr 51-80 mL/min estimated by Cockcroft-Gault). In patients with moderate renal impairment (CLcr 31-50 mL/min), reduce the dose of LYNPARZA to 200 mg twice daily. There are no data in patients with severe renal impairment or end-stage renal disease (CLcr ?30 mL/min).

INDICATIONS in the US

LYNPARZA is a poly (ADP-ribose) polymerase (PARP) inhibitor indicated:

First-Line Maintenance BRCAm Advanced Ovarian Cancer

For the maintenance treatment of adult patients with deleterious or suspected deleterious germline or somatic BRCA-mutated (gBRCAm or sBRCAm) advanced epithelial ovarian, fallopian tube or primary peritoneal cancer who are in complete or partial response to first-line platinum-based chemotherapy. Select patients for therapy based on an FDA-approved companion diagnostic for LYNPARZA.

First-Line Maintenance HRD Positive Advanced Ovarian Cancer in Combination with Bevacizumab

In combination with bevacizumab for the maintenance treatment of adult patients with advanced epithelial ovarian, fallopian tube or primary peritoneal cancer who are in complete or partial response to first-line platinum-based chemotherapy and whose cancer is associated with homologous recombination deficiency (HRD) positive status defined by either:

• a deleterious or suspected deleterious BRCA mutation and/or
• genomic instability

Select patients for therapy based on an FDA-approved companion diagnostic for LYNPARZA.

Maintenance Recurrent Ovarian Cancer

For the maintenance treatment of adult patients with recurrent epithelial ovarian, fallopian tube or primary peritoneal cancer, who are in complete or partial response to platinum-based chemotherapy.

Advanced gBRCAm Ovarian Cancer

For the treatment of adult patients with deleterious or suspected deleterious germline BRCA-mutated (gBRCAm) advanced ovarian cancer who have been treated with 3 or more prior lines of chemotherapy. Select patients for therapy based on an FDA-approved companion diagnostic for LYNPARZA.

gBRCAm HER2-negative Metastatic Breast Cancer

For the treatment of adult patients with deleterious or suspected deleterious gBRCAm, human epidermal growth factor receptor 2 (HER2)-negative metastatic breast cancer, who have been treated with chemotherapy in the neoadjuvant, adjuvant or metastatic setting. Patients with hormone receptor (HR)-positive breast cancer should have been treated with a prior endocrine therapy or be considered inappropriate for endocrine therapy. Select patients for therapy based on an FDA-approved companion diagnostic for LYNPARZA.

First-Line Maintenance gBRCAm Metastatic Pancreatic Cancer

For the maintenance treatment of adult patients with deleterious or suspected deleterious gBRCAm metastatic pancreatic adenocarcinoma whose disease has not progressed on at least 16 weeks of a first-line platinum-based chemotherapy regimen. Select patients for therapy based on an FDA-approved companion diagnostic for LYNPARZA.

HRR Gene-mutated Metastatic Castration Resistant Prostate Cancer

For the treatment of adult patients with deleterious or suspected deleterious germline or somatic homologous recombination repair (HRR) gene-mutated metastatic castration-resistant prostate cancer (mCRPC) who have progressed following prior treatment with enzalutamide or abiraterone. Select patients for therapy based on an FDA-approved companion diagnostic for LYNPARZA.

Please click here for complete Prescribing Information, including Patient Information (Medication Guide).

About PAOLA-1

PAOLA-1 is a double-blind Phase 3 trial testing the efficacy and safety of? LYNPARZA?added to standard-of-care bevacizumab versus bevacizumab alone, as a first-line maintenance treatment for newly diagnosed advanced (FIGO stages III and IV) high-grade serous or endometroid ovarian, fallopian tube or peritoneal cancer patients who had a complete or partial response to first-line treatment with platinum-based chemotherapy and bevacizumab.

The PAOLA-1 Phase 3 trial showed that LYNPARZA, in combination with bevacizumab maintenance treatment, reduced the risk of disease progression or death by 67% (HR 0.33 [95% CI, 0.25-0.45]) in patients with HRD-positive advanced ovarian cancer. The addition of LYNPARZA improved PFS to a median of 37.2 months vs. 17.7 months with bevacizumab alone.

The most common adverse reactions (ARs) ?10% in the overall trial population for PAOLA-1 when treated with LYNPARZA in combination with bevacizumab (N=535) and at a ?5% frequency compared to bevacizumab alone (N=267) were fatigue (53% vs. 32%), nausea (53% vs. 22%), anemia (41% vs. 10%), lymphopenia (24% vs. 9%), vomiting (22% vs. 11%) and leukopenia (18% vs. 10%). Grade 3 or above ARs were anemia (17% vs. <1%), lymphopenia (7% vs. 1%), fatigue (5% vs. 2%), nausea (2% vs. 1%), leukopenia (2% vs. 2%) and vomiting (2% vs. 2%). Additional ARs that occurred in ?10% of patients receiving LYNPARZA in combination with bevacizumab irrespective of the frequency compared to bevacizumab alone were diarrhea (18%), neutropenia (18%), urinary tract infection (15%) and headache (14%). Fatal ARs occurred in one patient due to concurrent pneumonia and aplastic anemia. Serious ARs occurred in 31% of patients who received LYNPARZA in combination with bevacizumab. Serious ARs in >5% of patients included hypertension (19%) and anemia (17%).

In addition, venous thromboembolic events occurred more commonly in patients receiving LYNPARZA in combination with bevacizumab (5%) than in those receiving bevacizumab alone (1.9%). ARs led to dose interruption in 54% of patients on LYNPARZA in combination with bevacizumab, while 41% of patients on LYNPARZA in combination with bevacizumab had a dose reduction. Discontinuation of treatment due to ARs occurred in 20% of patients on LYNPARZA in combination with bevacizumab.

About PROfound

PROfound is a prospective, multi-center, randomized, open-label Phase 3 trial testing the efficacy and safety of LYNPARZA versus enzalutamide or abiraterone in patients with mCRPC who have progressed on prior treatment with a new hormonal anticancer treatment and have a qualifying tumor mutation in BRCA1/2, ATM or one of 12 other genes involved in the HRR pathway.

The trial was designed to analyze patients with HRR-mutated genes in two cohorts: the primary endpoint was in those with mutations in BRCA1/2 or ATM genes and then, if LYNPARZA showed clinical benefit, a formal analysis was performed of the overall trial population of patients with HRR-mutated genes.

The subgroup analysis from the PROfound Phase 3 trial showed LYNPARZA reduced the risk of disease progression or death by 78% (HR 0.22 [95% CI, 0.15-0.32], nominal p<0.0001) and improved rPFS to a median of 9.8 months vs. 3.0 months with enzalutamide or abiraterone in men with mCRPC with BRCA1/2 mutations. LYNPARZA reduced the risk of death by 37% (HR 0.63 [95% CI 0.42-0.95]) with median OS of 20.1 months vs. 14.4 months with enzalutamide or abiraterone. The OS results from the PROfound Phase 3 trial were published in The New England Journal of Medicine earlier this year.

The most common ARs in the PROfound trial, occurring in ?10% of subjects, for LYNPARZA compared to enzalutamide or abiraterone were anemia (46% vs.15%), nausea (41% vs. 19%), fatigue (including asthenia) (41% vs. 32%), decreased appetite (30% vs. 18%), diarrhea (21% vs. 7%), vomiting (18% vs. 12%), thrombocytopenia (12% vs. 3%), cough (11% vs. 2%) and dyspnea (10% vs. 3%). Dose interruptions due to an AR occurred in 45% of patients receiving LYNPARZA and dose reductions due to an AR occurred in 22% of LYNPARZA patients. Discontinuation due to ARs occurred in 18% of LYNPARZA patients.

About POLO

POLO is a randomized, double-blinded, placebo-controlled, multi-center trial of LYNPARZA tablets (300 mg twice daily) as maintenance monotherapy versus placebo. The trial randomized 154 patients with gBRCAm metastatic pancreatic cancer whose disease had not progressed on first-line platinum-based chemotherapy.

Contacts

Media Contacts:

Patrick Ryan

(973) 275-7075

Steve Wanczyk

(267) 305-5563

Investor Contacts:

Peter Dannenbaum

(908) 740-1037

Courtney Ronaldo

(908) 740-6132

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