Merck (NYSE:MRK), known as MSD outside the United States and
Canada, today announced findings from the registrational phase 2
KEYNOTE-224 trial investigating the use of KEYTRUDA®
(pembrolizumab), the company’s anti-PD-1 therapy, in patients with
advanced hepatocellular carcinoma (HCC), the most common type of
liver cancer, who were previously treated with systemic therapy
(sorafenib). Results showed an overall response rate (ORR) of 16.3
percent (95% CI, 9.8-24.9) (n=17/104) with KEYTRUDA as monotherapy.
Data also include six-month overall survival (OS) and
progression-free survival (PFS) rates. The findings will be
presented at the 2018 American Society of Clinical Oncology
Gastrointestinal (ASCO GI) Cancers Symposium in San Francisco in an
oral presentation on Friday, Jan. 19, from 1:10-1:15 p.m. PT
(Location: Level 3 – Room 3014) (Abstract #209).
“There continues to be a significant need for new options in the
treatment of advanced hepatocellular carcinoma,” said Andrew Zhu,
M.D., Ph.D., lead investigator and director of liver cancer
research at Massachusetts General Hospital Cancer Center. “The
durable responses observed with KEYTRUDA monotherapy in this
difficult-to-treat cancer are encouraging.”
“Merck is committed to understanding the clinical benefit of
KEYTRUDA monotherapy across a range of gastrointestinal cancers,
including advanced liver cancer,” said Dr. Roger Dansey, senior
vice president and therapeutic area head, oncology late-stage
development, Merck Research Laboratories. “The findings from this
study demonstrate the potential of KEYTRUDA in patients with
advanced HCC following prior systemic therapy and support the
advancement of our clinical development program in this cancer
type.”
Merck has the industry’s largest immuno-oncology clinical
research program, which currently involves more than 650 trials
studying KEYTRUDA (pembrolizumab) across a wide variety of cancers
and treatment settings, including multiple gastrointestinal
disorders such as HCC and gastroesophageal cancer.
The KEYTRUDA clinical program seeks to understand the role of
KEYTRUDA across cancers and the factors that may predict a
patient’s likelihood of benefitting from treatment with KEYTRUDA,
including exploring several different biomarkers.
Data in Previously Treated Advanced HCC, KEYNOTE-224
(Abstract #209)
KEYNOTE-224 is a registrational, open-label phase 2 trial
investigating KEYTRUDA monotherapy in patients with advanced HCC
who had previously received systemic therapy with sorafenib. The
primary endpoint is ORR; secondary endpoints include duration of
response, disease control rate, time to progression, PFS and
OS.
Findings presented at ASCO GI were based on data from 104
evaluable patients, previously treated with sorafenib, who received
one or more doses of KEYTRUDA (200 mg intravenous infusion on day 1
of each 3-week cycle for up to 35 administrations). Data showed an
ORR of 16.3 percent (95% CI, 9.8-24.9) (n=17/104) with a complete
response rate of one percent (95% CI, 0.0-5.2) and a partial
response rate of 15.4 percent (95% CI, 9.1-23.8). ORR was similar
across subgroups with different etiology, including Hepatitis B and
Hepatitis C positive patients. At the time of analysis, the median
duration of response was 8.2 months (range: 2.3+ to 8.3+) with 94
percent of responses ongoing for six months or longer (calculated
per Kaplan-Meier method). The disease control rate was 61.5 percent
(95% CI, 51.5-70.9) (n=64/104). The median PFS was 4.8 months (95%
CI, 3.4-6.6) with a six-month PFS rate of 43.1 percent. The median
OS had not been reached at the time of analysis (95% CI, 9.4-not
reached) with a six-month OS rate of 77.9 percent.
The safety profile of KEYTRUDA was consistent with that observed
in previously reported studies. The treatment-related adverse
events (any grade occurring in 10% or more of patients) were
fatigue (12.5%), increased aspartate aminotransferase (9.6%),
diarrhea (9.6%) and pruritus (21.2%). Grade 3-5 treatment-related
adverse events occurred in 26 (25%) patients and there was one
treatment-related death. Immune-mediated adverse events occurred in
2.9 percent of patients. Seven patients discontinued treatment due
to treatment-related adverse events.
About Hepatocellular Carcinoma (HCC)
Hepatocellular carcinoma (HCC) is the most common type of liver
cancer in adults. Worldwide, more than 782,000 new cases of liver
cancer were diagnosed in 2012. In the U.S., the incidence of liver
cancer has more than tripled since 1980 and it is estimated that
42,220 new cases will be diagnosed in this year. In Europe, around
63,500 new cases were diagnosed in 2012. Risk factors for liver
cancer include gender, ethnicity, chronic viral hepatitis (Hep-B or
Hep-C) infection, cirrhosis, heavy alcohol abuse and obesity. HCC –
which is frequently diagnosed at an advanced stage – has one of the
highest mortality rates of solid cancers, with a 5-year survival
rate of less than 15 percent.
About KEYTRUDA® (pembrolizumab) Injection
100mg
KEYTRUDA is an anti-PD-1 therapy that works by increasing the
ability of the body’s immune system to help detect and fight tumor
cells. KEYTRUDA is a humanized monoclonal antibody that blocks the
interaction between PD-1 and its ligands, PD-L1 and PD-L2, thereby
activating T lymphocytes which may affect both tumor cells and
healthy cells.
KEYTRUDA (pembrolizumab) Indications and Dosing
Melanoma
KEYTRUDA is indicated for the treatment of patients with
unresectable or metastatic melanoma at a fixed dose of 200 mg every
three weeks until disease progression or unacceptable toxicity.
Lung Cancer
KEYTRUDA, as a single agent, is indicated for the first-line
treatment of patients with metastatic non-small cell lung cancer
(NSCLC) whose tumors have high PD-L1 expression [tumor proportion
score (TPS) ≥50%] as determined by an FDA-approved test, with no
EGFR or ALK genomic tumor aberrations.
KEYTRUDA, as a single agent, is also indicated for the treatment
of patients with metastatic NSCLC whose tumors express PD-L1 (TPS
≥1%) as determined by an FDA-approved test, with disease
progression on or after platinum-containing chemotherapy. Patients
with EGFR or ALK genomic tumor aberrations should have disease
progression on FDA-approved therapy for these aberrations prior to
receiving KEYTRUDA.
KEYTRUDA, in combination with pemetrexed and carboplatin, is
indicated for the first-line treatment of patients with metastatic
nonsquamous NSCLC. This indication is approved under accelerated
approval based on tumor response rate and progression-free
survival. Continued approval for this indication may be contingent
upon verification and description of clinical benefit in the
confirmatory trials.
In metastatic NSCLC, KEYTRUDA is administered at a fixed dose of
200 mg every three weeks until disease progression, unacceptable
toxicity, or up to 24 months in patients without disease
progression.
When administering KEYTRUDA (pembrolizumab) in combination with
chemotherapy, KEYTRUDA should be administered prior to chemotherapy
when given on the same day. See also the Prescribing Information
for pemetrexed and carboplatin.
Head and Neck Cancer
KEYTRUDA is indicated for the treatment of patients with
recurrent or metastatic head and neck squamous cell carcinoma
(HNSCC) with disease progression on or after platinum-containing
chemotherapy. This indication is approved under accelerated
approval based on tumor response rate and durability of response.
Continued approval for this indication may be contingent upon
verification and description of clinical benefit in the
confirmatory trials. In HNSCC, KEYTRUDA is administered at a fixed
dose of 200 mg every three weeks until disease progression,
unacceptable toxicity, or up to 24 months in patients without
disease progression.
Classical Hodgkin Lymphoma
KEYTRUDA is indicated for the treatment of adult and pediatric
patients with refractory classical Hodgkin lymphoma (cHL), or who
have relapsed after three or more prior lines of therapy. This
indication is approved under accelerated approval based on tumor
response rate and durability of response. Continued approval for
this indication may be contingent upon verification and description
of clinical benefit in the confirmatory trials. In adults with cHL,
KEYTRUDA is administered at a fixed dose of 200 mg every three
weeks until disease progression or unacceptable toxicity, or up to
24 months in patients without disease progression. In pediatric
patients with cHL, KEYTRUDA is administered at a dose of 2 mg/kg
(up to a maximum of 200 mg) every three weeks until disease
progression or unacceptable toxicity, or up to 24 months in
patients without disease progression.
Urothelial Carcinoma
KEYTRUDA is indicated for the treatment of patients with locally
advanced or metastatic urothelial carcinoma who are not eligible
for cisplatin-containing chemotherapy. This indication is approved
under accelerated approval based on tumor response rate and
duration of response. Continued approval for this indication may be
contingent upon verification and description of clinical benefit in
the confirmatory trials.
KEYTRUDA is also indicated for the treatment of patients with
locally advanced or metastatic urothelial carcinoma who have
disease progression during or following platinum-containing
chemotherapy or within 12 months of neoadjuvant or adjuvant
treatment with platinum-containing chemotherapy.
In locally advanced or metastatic urothelial carcinoma, KEYTRUDA
(pembrolizumab) is administered at a fixed dose of 200 mg every
three weeks until disease progression or unacceptable toxicity, or
up to 24 months in patients without disease progression.
Microsatellite Instability-High (MSI-H) Cancer
KEYTRUDA is indicated for the treatment of adult and pediatric
patients with unresectable or metastatic microsatellite
instability-high (MSI-H) or mismatch repair deficient (dMMR)
- solid tumors that have progressed
following prior treatment and who have no satisfactory alternative
treatment options, or
- colorectal cancer that has progressed
following treatment with fluoropyrimidine, oxaliplatin, and
irinotecan.
This indication is approved under accelerated approval based on
tumor response rate and durability of response. Continued approval
for this indication may be contingent upon verification and
description of clinical benefit in the confirmatory trials. The
safety and effectiveness of KEYTRUDA in pediatric patients with
MSI-H central nervous system cancers have not been established.
In adult patients with MSI-H cancer, KEYTRUDA is administered at
a fixed dose of 200 mg every three weeks until disease progression,
unacceptable toxicity, or up to 24 months in patients without
disease progression. In children with MSI-H cancer, KEYTRUDA is
administered at a dose of 2 mg/kg (up to a maximum of 200 mg) every
three weeks until disease progression or unacceptable toxicity, or
up to 24 months in patients without disease progression.
Gastric Cancer
KEYTRUDA is indicated for the treatment of patients with
recurrent locally advanced or metastatic gastric or
gastroesophageal junction (GEJ) adenocarcinoma whose tumors express
PD-L1 [Combined Positive Score (CPS) ≥1] as determined by an
FDA-approved test, with disease progression on or after two or more
prior lines of therapy including fluoropyrimidine- and
platinum-containing chemotherapy and if appropriate,
HER2/neu-targeted therapy. This indication is approved under
accelerated approval based on tumor response rate and durability of
response. Continued approval for this indication may be contingent
upon verification and description of clinical benefit in the
confirmatory trials. The recommended dose of KEYTRUDA is 200 mg
every three weeks until disease progression, unacceptable toxicity,
or up to 24 months in patients without disease progression.
Selected Important Safety Information for
KEYTRUDA® (pembrolizumab)
KEYTRUDA can cause immune-mediated pneumonitis, including fatal
cases. Pneumonitis occurred in 94 (3.4%) of 2799 patients receiving
KEYTRUDA, including Grade 1 (0.8%), 2 (1.3%), 3 (0.9%), 4 (0.3%),
and 5 (0.1%) pneumonitis, and occurred more frequently in patients
with a history of prior thoracic radiation (6.9%) compared to those
without (2.9%). Monitor patients for signs and symptoms of
pneumonitis. Evaluate suspected pneumonitis with radiographic
imaging. Administer corticosteroids for Grade 2 or greater
pneumonitis. Withhold KEYTRUDA for Grade 2; permanently discontinue
KEYTRUDA for Grade 3 or 4 or recurrent Grade 2 pneumonitis.
KEYTRUDA can cause immune-mediated colitis. Colitis occurred in
48 (1.7%) of 2799 patients receiving KEYTRUDA, including Grade 2
(0.4%), 3 (1.1%), and 4 (<0.1%) colitis. Monitor patients for
signs and symptoms of colitis. Administer corticosteroids for Grade
2 or greater colitis. Withhold KEYTRUDA for Grade 2 or 3;
permanently discontinue KEYTRUDA for Grade 4 colitis.
KEYTRUDA can cause immune-mediated hepatitis. Hepatitis occurred
in 19 (0.7%) of 2799 patients receiving KEYTRUDA, including Grade 2
(0.1%), 3 (0.4%), and 4 (<0.1%) hepatitis. Monitor patients for
changes in liver function. Administer corticosteroids for Grade 2
or greater hepatitis and, based on severity of liver enzyme
elevations, withhold or discontinue KEYTRUDA.
KEYTRUDA can cause hypophysitis. Hypophysitis occurred in 17
(0.6%) of 2799 patients receiving KEYTRUDA, including Grade 2
(0.2%), 3 (0.3%), and 4 (<0.1%) hypophysitis. Monitor patients
for signs and symptoms of hypophysitis (including hypopituitarism
and adrenal insufficiency). Administer corticosteroids and hormone
replacement as clinically indicated. Withhold KEYTRUDA for Grade 2;
withhold or discontinue for Grade 3 or 4 hypophysitis.
KEYTRUDA can cause thyroid disorders, including hyperthyroidism,
hypothyroidism, and thyroiditis. Hyperthyroidism occurred in 96
(3.4%) of 2799 patients receiving KEYTRUDA, including Grade 2
(0.8%) and 3 (0.1%) hyperthyroidism. Hypothyroidism occurred in 237
(8.5%) of 2799 patients receiving KEYTRUDA, including Grade 2
(6.2%) and 3 (0.1%) hypothyroidism. The incidence of new or
worsening hypothyroidism was higher in patients with HNSCC,
occurring in 28 (15%) of 192 patients with HNSCC, including Grade 3
(0.5%) hypothyroidism. Thyroiditis occurred in 16 (0.6%) of 2799
patients receiving KEYTRUDA, including Grade 2 (0.3%) thyroiditis.
Monitor patients for changes in thyroid function (at the start of
treatment, periodically during treatment, and as indicated based on
clinical evaluation) and for clinical signs and symptoms of thyroid
disorders. Administer replacement hormones for hypothyroidism and
manage hyperthyroidism with thionamides and beta-blockers as
appropriate. Withhold or discontinue KEYTRUDA for Grade 3 or 4
hyperthyroidism.
KEYTRUDA can cause type 1 diabetes mellitus, including diabetic
ketoacidosis, which have been reported in 6 (0.2%) of 2799
patients. Monitor patients for hyperglycemia or other signs and
symptoms of diabetes. Administer insulin for type 1 diabetes, and
withhold KEYTRUDA (pembrolizumab) and administer antihyperglycemics
in patients with severe hyperglycemia.
KEYTRUDA can cause immune-mediated nephritis. Nephritis occurred
in 9 (0.3%) of 2799 patients receiving KEYTRUDA, including Grade 2
(0.1%), 3 (0.1%), and 4 (<0.1%) nephritis. Monitor patients for
changes in renal function. Administer corticosteroids for Grade 2
or greater nephritis. Withhold KEYTRUDA for Grade 2; permanently
discontinue KEYTRUDA for Grade 3 or 4 nephritis.
Immune-mediated rashes, including Stevens-Johnson syndrome
(SJS), toxic epidermal necrolysis (TEN) (some cases with fatal
outcome), exfoliative dermatitis, and bullous pemphigoid, can
occur. Monitor patients for suspected severe skin reactions and
based on the severity of the adverse reaction, withhold or
permanently discontinue KEYTRUDA and administer corticosteroids.
For signs or symptoms of SJS or TEN, withhold KEYTRUDA and refer
the patient for specialized care for assessment and treatment. If
SJS or TEN is confirmed, permanently discontinue KEYTRUDA.
KEYTRUDA can cause other clinically important immune-mediated
adverse reactions. These immune-mediated reactions may occur in any
organ system. For suspected immune-mediated adverse reactions,
ensure adequate evaluation to confirm etiology or exclude other
causes. Based on the severity of the adverse reaction, withhold
KEYTRUDA and administer corticosteroids. Upon improvement to Grade
1 or less, initiate corticosteroid taper and continue to taper over
at least 1 month. Based on limited data from clinical studies in
patients whose immune-related adverse reactions could not be
controlled with corticosteroid use, administration of other
systemic immunosuppressants can be considered. Resume KEYTRUDA when
the adverse reaction remains at Grade 1 or less following
corticosteroid taper. Permanently discontinue KEYTRUDA for any
Grade 3 immune-mediated adverse reaction that recurs and for any
life-threatening immune-mediated adverse reaction.
The following clinically significant immune-mediated adverse
reactions occurred in less than 1% (unless otherwise indicated) of
2799 patients: arthritis (1.5%), uveitis, myositis, Guillain-Barré
syndrome, myasthenia gravis, vasculitis, pancreatitis, hemolytic
anemia, and partial seizures arising in a patient with inflammatory
foci in brain parenchyma. In addition, myelitis and myocarditis
were reported in other clinical trials, including classical Hodgkin
lymphoma, and postmarketing use.
Solid organ transplant rejection has been reported in
postmarketing use of KEYTRUDA. Treatment with KEYTRUDA may increase
the risk of rejection in solid organ transplant recipients.
Consider the benefit of treatment with KEYTRUDA vs the risk of
possible organ rejection in these patients.
KEYTRUDA can cause severe or life-threatening infusion-related
reactions, including hypersensitivity and anaphylaxis, which have
been reported in 6 (0.2%) of 2799 patients. Monitor patients for
signs and symptoms of infusion-related reactions, including rigors,
chills, wheezing, pruritus, flushing, rash, hypotension, hypoxemia,
and fever. For Grade 3 or 4 reactions, stop infusion and
permanently discontinue KEYTRUDA (pembrolizumab).
Immune-mediated complications, including fatal events, occurred
in patients who underwent allogeneic hematopoietic stem cell
transplantation (HSCT) after being treated with KEYTRUDA. Of 23
patients with cHL who proceeded to allogeneic HSCT after treatment
with KEYTRUDA on any trial, 6 patients (26%) developed
graft-versus-host disease (GVHD), one of which was fatal, and 2
patients (9%) developed severe hepatic veno-occlusive disease (VOD)
after reduced-intensity conditioning, one of which was fatal. Cases
of fatal hyperacute GVHD after allogeneic HSCT have also been
reported in patients with lymphoma who received a PD-1
receptor–blocking antibody before transplantation.
These complications may occur despite intervening therapy
between PD-1 blockade and allogeneic HSCT. Follow patients closely
for early evidence of transplant-related complications such as
hyperacute GVHD, severe (Grade 3 to 4) acute GVHD,
steroid-requiring febrile syndrome, hepatic VOD, and other
immune-mediated adverse reactions, and intervene promptly.
In clinical trials in patients with multiple myeloma, the
addition of KEYTRUDA to a thalidomide analogue plus dexamethasone
resulted in increased mortality. Treatment of these patients with a
PD-1 or PD-L1 blocking antibody in this combination is not
recommended outside of controlled clinical trials.
Based on its mechanism of action, KEYTRUDA can cause fetal harm
when administered to a pregnant woman. If used during pregnancy, or
if the patient becomes pregnant during treatment, apprise the
patient of the potential hazard to a fetus. Advise females of
reproductive potential to use highly effective contraception during
treatment and for 4 months after the last dose of KEYTRUDA.
In KEYNOTE-006, KEYTRUDA was discontinued due to adverse
reactions in 9% of 555 patients with advanced melanoma; adverse
reactions leading to discontinuation in more than one patient were
colitis (1.4%), autoimmune hepatitis (0.7%), allergic reaction
(0.4%), polyneuropathy (0.4%), and cardiac failure (0.4%). Adverse
reactions leading to interruption of KEYTRUDA occurred in 21% of
patients; the most common (≥1%) was diarrhea (2.5%). The most
common adverse reactions with KEYTRUDA vs ipilimumab were fatigue
(28% vs 28%), diarrhea (26% with KEYTRUDA), rash (24% vs 23%), and
nausea (21% with KEYTRUDA). Corresponding incidence rates are
listed for ipilimumab only for those adverse reactions that
occurred at the same or lower rate than with KEYTRUDA.
In KEYNOTE-010, KEYTRUDA monotherapy was discontinued due to
adverse reactions in 8% of 682 patients with metastatic NSCLC. The
most common adverse event resulting in permanent discontinuation of
KEYTRUDA (pembrolizumab) was pneumonitis (1.8%). Adverse reactions
leading to interruption of KEYTRUDA occurred in 23% of patients;
the most common (≥1%) were diarrhea (1%), fatigue (1.3%), pneumonia
(1%), liver enzyme elevation (1.2%), decreased appetite (1.3%), and
pneumonitis (1%). The most common adverse reactions (occurring in
at least 20% of patients and at a higher incidence than with
docetaxel) were decreased appetite (25% vs 23%), dyspnea (23% vs
20%), and nausea (20% vs 18%).
In KEYNOTE-021(G1), when KEYTRUDA was administered in
combination with carboplatin and pemetrexed (carbo/pem) in advanced
nonsquamous NSCLC, KEYTRUDA was discontinued in 10% of 59 patients.
The most common adverse reaction resulting in discontinuation of
KEYTRUDA (≥2%) was acute kidney injury (3.4%). Adverse reactions
leading to interruption of KEYTRUDA occurred in 39% of patients;
the most common (≥2%) were fatigue (8%), neutrophil count decreased
(8%), anemia (5%), dyspnea (3.4%), and pneumonitis (3.4%). The most
common adverse reactions (≥20%) with KEYTRUDA compared to carbo/pem
alone were fatigue (71% vs 50%), nausea (68% vs 56%), constipation
(51% vs 37%), rash (42% vs 21%), vomiting (39% vs 27%), dyspnea
(39% vs 21%), diarrhea (37% vs 23%), decreased appetite (31% vs
23%), headache (31% vs 16%), cough (24% vs 18%), dizziness (24% vs
16%), insomnia (24% vs 15%), pruritus (24% vs 4.8%), peripheral
edema (22% vs 18%), dysgeusia (20% vs 11%), alopecia (20% vs 3.2%),
upper respiratory tract infection (20% vs 3.2%), and arthralgia
(15% vs 24%). This study was not designed to demonstrate a
statistically significant difference in adverse reaction rates for
KEYTRUDA as compared to carbo/pem alone for any specified adverse
reaction.
In KEYNOTE-012, KEYTRUDA was discontinued due to adverse
reactions in 17% of 192 patients with HNSCC. Serious adverse
reactions occurred in 45% of patients. The most frequent serious
adverse reactions reported in at least 2% of patients were
pneumonia, dyspnea, confusional state, vomiting, pleural effusion,
and respiratory failure. The most common adverse reactions
(reported in at least 20% of patients) were fatigue, decreased
appetite, and dyspnea. Adverse reactions occurring in patients with
HNSCC were generally similar to those occurring in patients with
melanoma or NSCLC, with the exception of increased incidences of
facial edema (10% all Grades; 2.1% Grades 3 or 4) and new or
worsening hypothyroidism.
In KEYNOTE-087, KEYTRUDA was discontinued due to adverse
reactions in 5% of 210 patients with cHL, and treatment was
interrupted due to adverse reactions in 26% of patients. Fifteen
percent (15%) of patients had an adverse reaction requiring
systemic corticosteroid therapy. Serious adverse reactions occurred
in 16% of patients. The most frequent serious adverse reactions
(≥1%) included pneumonia, pneumonitis, pyrexia, dyspnea, GVHD, and
herpes zoster. Two patients died from causes other than disease
progression; one from GVHD after subsequent allogeneic HSCT and one
from septic shock. The most common adverse reactions (occurring in
≥20% of patients) were fatigue (26%), pyrexia (24%), cough (24%),
musculoskeletal pain (21%), diarrhea (20%), and rash (20%).
In KEYNOTE-052, KEYTRUDA (pembrolizumab) was discontinued due to
adverse reactions in 11% of 370 patients with locally advanced or
metastatic urothelial carcinoma. The most common adverse reactions
(in ≥20% of patients) were fatigue (38%), musculoskeletal pain
(24%), decreased appetite (22%), constipation (21%), rash (21%),
and diarrhea (20%). Eighteen patients (5%) died from causes other
than disease progression. Five patients (1.4%) who were treated
with KEYTRUDA experienced sepsis which led to death, and 3 patients
(0.8%) experienced pneumonia which led to death. Adverse reactions
leading to interruption of KEYTRUDA occurred in 22% of patients;
the most common (≥1%) were liver enzyme increase, diarrhea, urinary
tract infection, acute kidney injury, fatigue, joint pain, and
pneumonia. Serious adverse reactions occurred in 42% of patients,
the most frequent (≥2%) of which were urinary tract infection,
hematuria, acute kidney injury, pneumonia, and urosepsis.
In KEYNOTE-045, KEYTRUDA was discontinued due to adverse
reactions in 8% of 266 patients with locally advanced or metastatic
urothelial carcinoma. The most common adverse reaction resulting in
permanent discontinuation of KEYTRUDA was pneumonitis (1.9%).
Adverse reactions leading to interruption of KEYTRUDA occurred in
20% of patients; the most common (≥1%) were urinary tract infection
(1.5%), diarrhea (1.5%), and colitis (1.1%). The most common
adverse reactions (≥20%) in patients who received KEYTRUDA vs those
who received chemotherapy were fatigue (38% vs 56%),
musculoskeletal pain (32% vs 27%), pruritus (23% vs 6%), decreased
appetite (21% vs 21%), nausea (21% vs 29%), and rash (20% vs 13%).
Serious adverse reactions occurred in 39% of KEYTRUDA-treated
patients, the most frequent (≥2%) of which were urinary tract
infection, pneumonia, anemia, and pneumonitis.
It is not known whether KEYTRUDA is excreted in human milk.
Because many drugs are excreted in human milk, instruct women to
discontinue nursing during treatment with KEYTRUDA and for 4 months
after the final dose.
There is limited experience in pediatric patients. In a study,
40 pediatric patients (16 children aged 2 years to younger than 12
years and 24 adolescents aged 12 years to 18 years) with advanced
melanoma, lymphoma, or PD-L1–positive advanced, relapsed, or
refractory solid tumors were administered KEYTRUDA 2 mg/kg every 3
weeks. Patients received KEYTRUDA for a median of 3 doses (range
1–17 doses), with 34 patients (85%) receiving KEYTRUDA for 2 doses
or more. The safety profile in these pediatric patients was similar
to that seen in adults treated with KEYTRUDA. Toxicities that
occurred at a higher rate (≥15% difference) in these patients when
compared to adults under 65 years of age were fatigue (45%),
vomiting (38%), abdominal pain (28%), hypertransaminasemia (28%),
and hyponatremia (18%).
Our Focus on Cancer
Our goal is to translate breakthrough science into innovative
oncology medicines to help people with cancer worldwide. At Merck,
helping people fight cancer is our passion and supporting
accessibility to our cancer medicines is our commitment. Our focus
is on pursuing research in immuno-oncology and we are accelerating
every step in the journey – from lab to clinic – to potentially
bring new hope to people with cancer.
As part of our focus on cancer, Merck is committed to exploring
the potential of immuno-oncology with one of the fastest-growing
development programs in the industry. We are currently executing an
expansive research program evaluating our anti-PD-1 therapy across
more than 30 tumor types. We also continue to strengthen our
immuno-oncology portfolio through strategic acquisitions and are
prioritizing the development of several promising immunotherapeutic
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
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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
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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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dependence on the effectiveness of the company’s patents and other
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The company undertakes no obligation to publicly update any
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Please see Prescribing Information for KEYTRUDA
(pembrolizumab)
at http://www.merck.com/product/usa/pi_circulars/k/keytruda/keytruda_pi.pdf and
Patient Information/Medication Guide for KEYTRUDA
at http://www.merck.com/product/usa/pi_circulars/k/keytruda/keytruda_mg.pdf.
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version on businesswire.com: http://www.businesswire.com/news/home/20180119005189/en/
MerckMediaPamela Eisele, 267-305-3558Ann Bush,
908-740-6677orInvestorsTeri Loxam, 908-740-1986Michael DeCarbo,
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