On May 8, 2020 AstraZeneca and Merck (NYSE: MRK), known as MSD outside the United States and Canada, reported that the U.S. Food and Drug Administration (FDA) has approved LYNPARZA in combination with bevacizumab as a first-line 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 (Press release, Merck & Co, MAY 8, 2020, View Source [SID1234557384]). Patients will be selected for therapy based on an FDA-approved companion diagnostic for LYNPARZA.
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The approval was based on a biomarker subgroup analysis of 387 patients with HRD-positive tumors from the Phase 3 PAOLA-1 trial, which showed that LYNPARZA in combination with bevacizumab reduced the risk of disease progression or death by 67% (HR 0.33 [95% CI, 0.25-0.45]). It improved progression-free survival (PFS) to a median of 37.2 months vs. 17.7 months with bevacizumab alone in patients with HRD-positive advanced ovarian cancer.
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 adverse reactions 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 adverse reactions occurred in one patient due to concurrent pneumonia and aplastic anemia. Serious adverse reactions occurred in 31% of patients who received LYNPARZA in combination with bevacizumab. Serious adverse reactions 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.
Approximately one in two women with advanced ovarian cancer has an HRD-positive tumor. For patients with advanced ovarian cancer, the primary aim of first-line maintenance treatment is to delay disease progression for as long as possible.
Isabelle Ray-Coquard, principal investigator of the PAOLA-1 trial and medical oncologist, Centre Léon Bérard and President of the GINECO group, said, "Ovarian cancer is a devastating disease. The magnitude of benefit in HRD-positive patients in the PAOLA-1 trial is impactful. I look forward to seeing this translate into clinical practice."
Dave Frederickson, executive vice president, head of the oncology business unit, AstraZeneca, said, "This approval represents another milestone for LYNPARZA in patients with ovarian cancer. The median progression-free survival of more than three years offers new hope for women to delay relapse in this difficult-to-treat disease. These results further establish that HRD-positive is a distinct subset of ovarian cancer and HRD testing is now a critical component of diagnosis and tailoring of treatment for women with advanced ovarian cancer."
Dr. Roy Baynes, senior vice president and head of global clinical development, chief medical officer, Merck Research Laboratories, said, "Advances in understanding the role of biomarkers and PARP inhibition have fundamentally changed how physicians treat this aggressive type of cancer. Today’s approval based on the PAOLA-1 trial highlights the importance of HRD testing at diagnosis to identify those who may benefit from LYNPARZA in combination with bevacizumab as a first-line maintenance treatment."
The full results from the Phase 3 PAOLA-1 trial were published in The New England Journal of Medicine.
Regulatory reviews are currently underway in the European Union, Japan and other countries for LYNPARZA in combination with bevacizumab as a first-line maintenance treatment for patients with advanced ovarian cancer. As part of a broad development program, LYNPARZA is being assessed as a monotherapy and in combination across multiple tumor types.
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.
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%).
DRUG INTERACTIONS
Anticancer Agents: Clinical studies of LYNPARZA in combination with other myelosuppressive anticancer agents, including DNA-damaging agents, indicate a potentiation and prolongation of myelosuppressive toxicity.
CYP3A Inhibitors: Avoid concomitant use of strong or moderate CYP3A inhibitors. If a strong or moderate CYP3A inhibitor must be co-administered, reduce the dose of LYNPARZA. Advise patients to avoid grapefruit, grapefruit juice, Seville oranges, and Seville orange juice during LYNPARZA treatment.
CYP3A Inducers: Avoid concomitant use of strong or moderate CYP3A inducers when using LYNPARZA. If a moderate inducer cannot be avoided, there is a potential for decreased efficacy of 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
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.
Please click here for complete Prescribing Information, including Patient Information (Medication Guide).
About PAOLA-1
PAOLA-1 is a double-blind Phase 3 trial evaluating the efficacy and safety of LYNPARZA in combination with standard-of-care bevacizumab vs. bevacizumab alone, as a first-line maintenance treatment for advanced FIGO Stage III-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.
PAOLA-1 is an ENGOT (European Network of Gynaecological Oncological Trial groups) trial, sponsored by ARCAGY Research (Association de Recherche sur les CAncers dont GYnécologiques) on behalf of GINECO (Groupe d’Investigateurs National des Etudes des Cancers Ovariens et du sein). ARCAGY-GINECO is an academic group specializing in clinical and translational research in patients’ cancers and a member of the GCIG (Gynecologic Cancer InterGroup).
In the U.S., eligible advanced ovarian cancer patients will be selected for therapy based on the FDA-approved myChoice HRD Plus, an HRD test designed to detect when a tumor has lost the ability to repair double-stranded DNA breaks. Myriad Genetics, Inc. owns and commercializes myChoice HRD Plus.
About LYNPARZA (olaparib)
LYNPARZA is a first-in-class PARP inhibitor and the first targeted treatment to potentially exploit DNA damage response (DDR) pathway deficiencies, such as BRCA mutations, to preferentially kill cancer cells. Inhibition of PARP with LYNPARZA leads to the trapping of PARP bound to DNA single-strand breaks, stalling of replication forks, their collapse and the generation of DNA double-strand breaks and cancer cell death. LYNPARZA is being tested in a range of tumor types with defects and dependencies in the DDR.
LYNPARZA, which is being jointly developed and commercialized by AstraZeneca and Merck, has a broad and advanced clinical trial development program, and AstraZeneca and Merck are working together to understand how it may affect multiple PARP-dependent tumors as a monotherapy and in combination across multiple cancer types.
About Ovarian Cancer
Ovarian cancer is the fifth most common cause of death from cancer in women in the United States. This year, it is estimated that more than 21,000 women will be diagnosed with ovarian cancer and nearly 14,000 women will die of this disease.
Women with ovarian cancer are often diagnosed with advanced disease, which has a five-year survival rate of about 48%. For newly diagnosed advanced ovarian cancer, the primary aim of treatment is to delay progression of the disease for as long as possible. BRCA1/2 mutations are found in approximately 22% of all ovarian cancers and approximately 50% of ovarian cancers are HRD-positive.
About Homologous Recombination Deficiency
HRD encompass a wide range of genetic abnormalities, including BRCA mutations, that can be detected using tests. As the BRCA gene drives DNA repair via homologous recombination, mutation of this gene leads to homologous recombination deficiency thereby interfering with normal cell DNA repair mechanisms. BRCA mutations are just one of many HRDs which confer sensitivity to PARP inhibitors including LYNPARZA.
About the AstraZeneca and Merck Strategic Oncology Collaboration
In July 2017, AstraZeneca and Merck & Co., Inc., Kenilworth, NJ, US, known as MSD outside the United States and Canada, announced a global strategic oncology collaboration to co-develop and co-commercialize certain oncology products, including LYNPARZA, the world’s first PARP inhibitor, for multiple cancer types. Working together, the companies will develop these products in combination with other potential new medicines and as monotherapies. Independently, the companies will develop these oncology products in combination with their respective PD-L1 and PD-1 medicines.
Merck’s Focus on Cancer
Our goal is to translate breakthrough science into innovative oncology medicines to help people with cancer worldwide. At Merck, the potential to bring new hope to people with cancer drives our purpose and supporting accessibility to our cancer medicines is our commitment. As part of our focus on cancer, Merck is committed to exploring the potential of immuno-oncology with one of the largest development programs in the industry across more than 30 tumor types. We also continue to strengthen our portfolio through strategic acquisitions and are prioritizing the development of several promising oncology candidates with the potential to improve the treatment of advanced cancers. For more information about our oncology clinical trials, visit www.merck.com/clinicaltrials.