June 03,2021: AstraZeneca and Merck announced the first presentation of data from the Phase 3 OlympiA trial, in which LYNPARZA demonstrated a statistically significant improvement in its primary endpoint of invasive disease-free survival (iDFS) versus placebo in the adjuvant treatment of patients with germline BRCA1/2 mutations and high-risk human epidermal growth factor receptor 2 (HER2)-negative early breast cancer following definitive local treatment and neoadjuvant or adjuvant chemotherapy.
Results will be presented during the Plenary Session at the 2021 American Society of Clinical Oncology (ASCO) Annual Meeting on June 6 (Abstract LBA#1). Results were also published today in the New England Journal of Medicine.
An estimated 2.3 million people were diagnosed with breast cancer worldwide in 2020, and germline BRCA mutations are found in approximately 5% of patients with breast cancer.
OlympiA is a Phase 3, multicenter, randomized, double-blind, placebo-controlled trial. In the overall trial population of 1,836 patients, results showed LYNPARZA (n=921) reduced the risk of invasive breast cancer recurrences, second cancers or death by 42% (HR=0.58 [99.5% CI, 0.41-0.82]; p<0.0001) versus placebo (n=915) based on a pre-specified event-driven interim analysis with a median follow-up of 2.5 years.
At three years following trial initiation, 85.9% of patients treated with LYNPARZA were alive and free of invasive breast cancer and second cancers versus 77.1% of patients treated with placebo (difference: 8.8% [95% CI, 4.5-13.0]).
Results also showed an improvement in the key secondary endpoint of distant disease-free survival (DDFS) in the overall trial population. LYNPARZA reduced the risk of distant disease recurrence or death by 43% (HR=0.57 [99.5% CI, 0.39-0.83]; p<0.0001).
At the time of data cut-off, overall survival (OS) data, while directionally encouraging, did not reach statistical significance and were not mature. The trial will continue to assess OS as a secondary endpoint.
The safety and tolerability profile of LYNPARZA in this trial was in line with that observed in prior clinical trials.
The most common adverse events (AEs) (≥20%) were nausea (57%), fatigue (40%), anemia (23%) and vomiting (23%). Grade ≥3 AEs were anemia (9%), neutropenia (5%), leukopenia (3%), fatigue (2%) and nausea (1%).
Approximately 10% of patients treated with LYNPARZA discontinued treatment due to AEs.
Andrew Tutt, chair of the OlympiA trial steering committee and professor of oncology, The Institute of Cancer Research, London, and Kings College London, said, “We are thrilled that our global academic and industry partnership in OlympiA has been able to help identify a possible new treatment option for patients with early-stage breast cancer and who have inherited mutations in their BRCA1 or BRCA2 genes.
Patients with early-stage breast cancer who have inherited BRCA mutations are typically diagnosed at a younger age compared to those without such a mutation.
Olaparib has the potential to be used as a follow-on to all the standard initial breast cancer treatments to reduce the rate of life-threatening recurrence and cancer spread for many patients identified through genetic testing to have mutations in these genes.”
Dave Fredrickson, executive vice president, oncology business unit, AstraZeneca, said, “By providing a treatment which significantly reduces the risk of breast cancer returning in these high-risk patients, we hope LYNPARZAwill set a new benchmark. We are working with regulatory authorities to bring LYNPARZAto these patients as quickly as possible.”
Dr. Roy Baynes, senior vice president and head of global clinical development, chief medical officer, Merck Research Laboratories, said, “Results of the OlympiA trial represent a potential step forward for patients with high-risk early breast cancer. These new data support the importance of testing at diagnosisfor BRCA1/2 mutations, which are actionable biomarkers that can help identify patients with early breast cancer who may be eligible for adjuvant treatment with LYNPARZA. Testing for BRCA mutations, in addition to hormone receptor status and the expression of the HER2 protein, will allow clinicians to better inform potential treatment plans for their patients.”
In February 2021, the Independent Data Monitoring Committee (IDMC) recommended for the OlympiA trial to move to early primary analysis and reporting. Based on the planned interim analysis, the IDMC concluded that the trial crossed the superiority boundary for its primary endpoint of iDFS.
Summary of OlympiA Results
| LYNPARZA (n=921) | Placebo (n=915) | |
| iDFS (primary endpoint) | ||
| HR (99.5% CI) | 0.58 (0.41, 0.82) | |
| p-value | p<0.0001 | |
| Events | 106 | 178 |
| iDFS ratesiii | ||
| One year | 93.3% | 88.4% |
| Two years | 89.2% | 81.5% |
| Three years | 85.9% | 77.1% |
| DDFS (secondary endpoint) | ||
| HR (99.5% CI) | 0.57 (0.39, 0.83) | |
| p-value | p<0.0001 | |
| Events | 89 | 152 |
| DDFS ratesiii | ||
| One year | 94.3% | 90.2% |
| Two years | 90.0% | 83.9% |
| Three years | 87.5% | 80.4% |
| OS at interim (secondary endpoint) ii | ||
| HR (99% CI) | 0.68 (0.44, 1.05) | |
| p-value | p=0.024 | |
| Events | 59 | 86 |
| OS ratesiii | ||
| One year | 98.1% | 96.9% |
| Two years | 94.8% | 92.3% |
| Three years | 92.0% | 88.3% |
| i | The data cut-off date for the interim analysis was March 27, 2020. | |
| ii | Statistical significance was not reached based on the interim analysis plan for alpha conservation for future survival analyses. | |
| iii | The study was not designed to assess a statistical difference between treatment groups at these timepoints. |
OlympiA is a global, collaborative, Phase 3 trial coordinated by the Breast International Group (BIG) worldwide, in partnership with NRG Oncology, the U.S. National Cancer Institute (NCI), Frontier Science & Technology Research Foundation (FSTRF), AstraZeneca and Merck. The trial is sponsored by NRG Oncology in the U.S. and by AstraZeneca outside the U.S.
LYNPARZA is approved in the U.S., Japan and a number of other countries for germline BRCA-mutated, HER2-negative metastatic breast cancer previously treated with chemotherapy and, if hormone receptor-positive, endocrine therapy if appropriate. In the EU, this includes locally advanced breast cancer.
IMPORTANT SAFETY INFORMATION
CONTRAINDICATIONS
There are no contraindications for LYNPARZA.
WARNINGS AND PRECAUTIONS
Myelodysplastic Syndrome/Acute Myeloid Leukemia (MDS/AML): Occurred in approximately 1.5% of patients exposed to LYNPARZA monotherapy, and the majority of events had a fatal outcome. The median duration of therapy in patients who developed MDS/AML was 2 years (range: <6 months to >10 years). All of these patients had previous chemotherapy with platinum agents and/or other DNA-damaging agents, including radiotherapy.
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 0.8% of patients exposed to LYNPARZA monotherapy, 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 United States
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.”
https://www.merck.com/news/lynparza-olaparib-reduced-the-risk-of-invasive-disease-recurrence-or-death-by-42-versus-placebo-in-adjuvant-treatment-of-patients-with-germline-brca-mutations-and-high-risk-her2-negative-early/
