Submission Based on PROfound, the First
Phase 3 Trial Evaluating a Targeted Treatment in Biomarker-Selected
Prostate Cancer Patients
AstraZeneca and Merck (NYSE: MRK), known as MSD outside the
United States and Canada, today announced that a supplemental New
Drug Application (sNDA) for LYNPARZA has been accepted and granted
priority review by the U.S. Food and Drug Administration (FDA) for
the treatment of patients with metastatic castration-resistant
prostate cancer (mCRPC) and deleterious or suspected deleterious
germline or somatic homologous recombination repair (HRR) gene
mutations, who have progressed following prior treatment with a new
hormonal agent.
A Prescription Drug User Fee Act (PDUFA) date is set for the
second quarter of 2020.
The sNDA acceptance for review by the FDA is based on positive
results from the Phase 3 PROfound trial, which were presented
during a Presidential Symposium at the 2019 European Society of
Medical Oncology congress.
Results of the PROfound trial showed LYNPARZA met its primary
endpoint, significantly reducing the risk of radiographic disease
progression or death by 66% in patients with BRCA1/2 or ATM-mutated
mCRPC and improved radiographic progression-free survival (rPFS) to
a median of 7.4 months vs. 3.6 months for patients receiving
abiraterone or enzalutamide (HR 0.34 [95% CI, 0.25-0.47],
p<0.0001).
The trial also met the key secondary endpoint of rPFS in the
overall population of men with HRR-mutated (HRRm) mCRPC (those with
mutations in BRCA1/2, ATM, CDK12 or 11 other HRRm genes), where
LYNPARZA reduced the risk of radiographic disease progression or
death by 51% and improved rPFS to a median of 5.8 months vs. 3.5
months for those receiving abiraterone or enzalutamide (HR 0.49
[95% CI, 0.38-0.63], p<0.0001).
The safety and tolerability profile of LYNPARZA in the PROfound
trial did not differ from that observed in prior clinical trials.
The most common adverse events (AEs) ≥20% for LYNPARZA compared to
abiraterone or enzalutamide were anemia (47% vs.15%), nausea (41%
vs. 19%), fatigue and asthenia (41% vs. 32%), decreased appetite
(30% vs. 18%) and diarrhea (21% vs. 7%). Grade 3 or above AEs were
anemia (22% vs. 5%), fatigue and asthenia (3% vs. 5%), vomiting (2%
vs. 1%), dyspnea (2% vs. 0%), urinary tract infection (2% vs. 4%),
nausea (1% vs. 0%), decreased appetite (1% each), diarrhea (1% vs.
0%) and back pain (1% vs. 2%). AEs led to dose interruptions in 22%
of patients on LYNPARZA vs. 4% of patients on abiraterone and
enzalutamide and discontinuation of treatment in 16% of patients on
LYNPARZA vs. 9% on abiraterone and enzalutamide.
PROfound is the first Phase 3 trial evaluating a targeted
treatment in biomarker-selected prostate cancer patients. LYNPARZA,
which is being jointly developed and commercialized by AstraZeneca
and Merck, was most recently approved in the U.S. on Dec. 27, 2019,
as a first-line maintenance treatment for germline BRCA-mutated
(gBRCAm) metastatic pancreatic cancer that has not progressed on at
least 16 weeks of a first-line platinum-based chemotherapy regimen.
It is also approved in the U.S. as a first-line maintenance
treatment in BRCA-mutated advanced ovarian cancer following
response to platinum-based chemotherapy and for the treatment of
gBRCAm HER2-negative metastatic breast cancer patients previously
treated with chemotherapy.
About PROfound
PROfound is a prospective, multi-center, randomized, open-label,
Phase 3 trial evaluating the efficacy and safety of LYNPARZA vs.
new hormonal agents (e.g. abiraterone or enzalutamide) in patients
with mCRPC who have progressed on prior treatment with a new
hormonal anticancer treatment and have a qualifying tumor mutation
in one of 15 genes involved in the homologous recombination repair
(HRR) pathway, among them BRCA1/2, ATM and CDK12.
The trial was designed to analyze patients with HRRm 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 HRRm genes (BRCA1/2, ATM, CDK12 and 11 other HRRm
genes; key secondary endpoint).
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—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.
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
In 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 Metastatic Castration-Resistant Prostate Cancer
(mCRPC)
Prostate cancer is the second-most common cancer in men and is
associated with a significant mortality rate. In the U.S. this
year, it is estimated that more than 191,000 people will be
diagnosed with prostate cancer and more than 33,000 people will die
of this disease. More than one in four patients with mCRPC harbor
an HRR mutation.
Development of prostate cancer is often driven by male sex
hormones called androgens, including testosterone. mCRPC occurs
when prostate cancer grows and spreads to other parts of the body
despite the use of androgen-deprivation therapy to block the action
of male sex hormones. Approximately 10-20% of men with advanced
prostate cancer will develop CRPC within five years, and at least
84% of these will have metastases at the time of CRPC diagnosis. Of
men with no metastases at CRPC diagnosis, 33% are likely to develop
metastases within two years. Despite an increase in the number of
available therapies, five-year survival for men with mCRPC remains
low.
About Homologous Recombination Repair (HRR) Mutations
Homologous recombination repair (HRR) plays a significant role
in maintaining the genetic stability of cells and suppressing tumor
growth by repairing damaged DNA. Mutations, or defects, in
homologous recombination (HR) pathway genes – which include ataxia
telangiectasia mutated (ATM) and BRCA1/2 genes – increase the risk
for breast, ovarian, pancreatic, prostate and other cancers.
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 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 LYNPARZA, the world’s first PARP inhibitor,
and potential new medicine selumetinib, a MEK inhibitor, for
multiple cancer types. Working together, the companies will develop
LYNPARZA and selumetinib in combination with other potential new
medicines and as monotherapies. Independently, the companies will
develop LYNPARZA and selumetinib 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.
About Merck
For more than a century, Merck, a leading global
biopharmaceutical company known as MSD outside of the United States
and Canada, has been inventing for life, bringing forward medicines
and vaccines for many of the world’s most challenging diseases.
Through our prescription medicines, vaccines, biologic therapies
and animal health products, we work with customers and operate in
more than 140 countries to deliver innovative health solutions. We
also demonstrate our commitment to increasing access to health care
through far-reaching policies, programs and partnerships. Today,
Merck continues to be at the forefront of research to advance the
prevention and treatment of diseases that threaten people and
communities around the world - including cancer, cardio-metabolic
diseases, emerging animal diseases, Alzheimer’s disease and
infectious diseases including HIV and Ebola. For more information,
visit www.merck.com and connect with us on Twitter, Facebook,
Instagram, YouTube and LinkedIn.
Forward-Looking Statement of Merck & Co., Inc.,
Kenilworth, N.J., USA
This news release of Merck & Co., Inc., Kenilworth, N.J.,
USA (the “company”) includes “forward-looking statements” within
the meaning of the safe harbor provisions of the U.S. Private
Securities Litigation Reform Act of 1995. These statements are
based upon the current beliefs and expectations of the company’s
management and are subject to significant risks and uncertainties.
There can be no guarantees with respect to pipeline products that
the products will receive the necessary regulatory approvals or
that they will prove to be commercially successful. If underlying
assumptions prove inaccurate or risks or uncertainties materialize,
actual results may differ materially from those set forth in the
forward-looking statements.
Risks and uncertainties include but are not limited to, general
industry conditions and competition; general economic factors,
including interest rate and currency exchange rate fluctuations;
the impact of pharmaceutical industry regulation and health care
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