KEYNOTE-564 is the First Phase 3 Study to
Show Positive Results for Adjuvant Immunotherapy in RCC
First-Time Disease-Free Survival Data to be
Presented During Plenary Session at the 2021 ASCO Annual
Meeting
Merck (NYSE: MRK), known as MSD outside the United States and
Canada, today announced first-time results from the pivotal Phase 3
KEYNOTE-564 trial evaluating KEYTRUDA, Merck’s anti-PD-1 therapy,
for the potential adjuvant treatment of patients with renal cell
carcinoma (RCC) at intermediate-high or high risk of recurrence
following nephrectomy (surgical removal of a kidney) or following
nephrectomy and resection of metastatic lesions. After a median
follow-up of 24.1 months (14.9-41.5), KEYTRUDA demonstrated a
statistically significant and clinically meaningful reduction in
the risk of disease recurrence or death by 32% compared to placebo
(HR=0.68 [95% CI, 0.53–0.87]; p=0.0010). Additionally, a favorable
trend in overall survival (OS) was observed with a 46% reduction in
the risk of death with KEYTRUDA as compared to placebo (HR=0.54
[95% CI, 0.30–0.96]; p=0.0164). As previously announced, the trial
will continue to evaluate OS, a key secondary endpoint.
“With the results of KEYNOTE-564, pembrolizumab is the first
immunotherapy to show a clinical benefit in the adjuvant setting in
kidney cancer,” said Dr. Toni K. Choueiri, director of the Lank
Center for Genitourinary Oncology, Dana-Farber Cancer Institute and
professor of medicine at Harvard Medical School. “It took several
decades to achieve this milestone. We hope to build on this
important research and provide new treatment options to kidney
cancer patients.”
“As nearly half of early-stage renal cell carcinoma patients
experience disease recurrence after surgery, we are particularly
encouraged to see that KEYTRUDA demonstrated a statistically
significant reduction in the risk of recurrence or death by 32%
compared with placebo in this study,” said Dr. Scot Ebbinghaus,
vice president, clinical research, Merck Research Laboratories.
“These data highlight the opportunity for KEYTRUDA to become a new
standard of care for patients with early-stage renal cell carcinoma
and we look forward to working closely with regulatory authorities
to make this treatment option available to patients.”
The late-breaking results will be presented in the Plenary
session of the 2021 American Society of Clinical Oncology (ASCO)
Annual Meeting (Abstract #LBA5) on Sunday, June 6, 2021. As
announced, data spanning more than 20 types of cancer will be
presented from Merck’s oncology research program at ASCO. A
compendium of presentations and posters of Merck-led studies will
be posted by Merck on Friday, June 4 at 9 a.m. ET. Follow Merck on
Twitter via @Merck and keep up to date with ASCO news and updates
by using the hashtag #ASCO21.
Merck is continuing to study KEYTRUDA, in combination or as
monotherapy, as well as other investigational products across
multiple settings and stages of RCC including adjuvant and advanced
or metastatic disease through our broad clinical development
program, which includes over 20 clinical studies and more than
4,000 patients.
KEYTRUDA is currently approved in the U.S., Europe and Japan in
combination with axitinib for the first-line treatment of patients
with advanced RCC.
Study Design and Additional Data from KEYNOTE-564
KEYNOTE-564 is a randomized, double-blind, Phase 3 trial
(ClinicalTrials.gov, NCT03142334) evaluating KEYTRUDA monotherapy
versus placebo for the adjuvant treatment of patients with RCC who
have undergone nephrectomy and who have intermediate-high risk,
high risk, or M1 no evidence of disease (M1 NED) RCC with clear
cell component. The study enrolled 994 patients who were randomized
to receive either KEYTRUDA (200 mg intravenously [IV] on Day 1 of
each three-week cycle for up to 17 cycles) or placebo (saline
solution IV on Day 1 of each three-week cycle for up to 17 cycles).
The primary endpoint is disease-free survival (DFS), and the
secondary endpoints include OS and safety.
As of data cutoff (Dec. 14, 2020), the median study follow-up
was 24.1 months. Findings showed KEYTRUDA demonstrated a
statistically significant improvement in DFS in patients with RCC
following nephrectomy or following nephrectomy and resection of
metastatic lesions compared with placebo (HR=0.68 [95% CI,
0.53–0.87]; p=0.0010). Additionally, the two-year estimated DFS
rate was 77.3% with KEYTRUDA versus 68.1% with placebo. Overall,
the DFS benefit was consistent across subgroups. Median DFS was not
achieved in either treatment arm based on event accrual.
Grade 3-5 treatment-related adverse events (TRAEs) occurred in
18.9% of patients in the KEYTRUDA arm and 1.2% of patients in the
placebo arm. TRAEs resulting in discontinuation of any treatment
occurred in 17.6% of patients in the KEYTRUDA arm and 0.6% of
patients in the placebo arm. The most common TRAEs of any grade
(occurring in ≥5% of patients) were fatigue (20.3%), pruritus
(18.6%) and hypothyroidism (17.6%) in the KEYTRUDA arm and fatigue
(14.3%), pruritus (11.5%) and diarrhea (10.3%) in the placebo arm.
The most common immune-mediated adverse events of any grade
(occurring in ≥3% of patients) were hypothyroidism (21.1%) and
hyperthyroidism (11.9%) in the KEYTRUDA arm and hypothyroidism
(3.6%) in the placebo arm. No treatment-related deaths
occurred.
About Renal Cell Carcinoma (RCC)
Renal cell carcinoma (RCC) is by far the most common type of
kidney cancer; about nine out of 10 kidney cancers are RCCs. Renal
cell carcinoma is about twice as common in men as in women. Most
cases of RCC are discovered incidentally during imaging tests for
other abdominal diseases. Worldwide, it is estimated there were
nearly 431,300 new cases of kidney cancer diagnosed and almost
179,400 deaths from the disease in 2020. In the U.S. alone, it is
estimated there will be nearly 76,100 new cases of kidney cancer
diagnosed and almost 13,800 deaths from the disease in 2021.
About KEYTRUDA® (pembrolizumab) Injection, 100 mg
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.
Merck has the industry’s largest immuno-oncology clinical
research program. There are currently more than 1,400 trials
studying KEYTRUDA across a wide variety of cancers and treatment
settings. 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.
Selected KEYTRUDA® (pembrolizumab) Indications in the U.S.
Melanoma
KEYTRUDA is indicated for the treatment of patients with
unresectable or metastatic melanoma.
KEYTRUDA is indicated for the adjuvant treatment of patients
with melanoma with involvement of lymph node(s) following complete
resection.
Non-Small Cell Lung Cancer
KEYTRUDA, in combination with pemetrexed and platinum
chemotherapy, is indicated for the first-line treatment of patients
with metastatic nonsquamous non-small cell lung cancer (NSCLC),
with no EGFR or ALK genomic tumor aberrations.
KEYTRUDA, in combination with carboplatin and either paclitaxel
or paclitaxel protein-bound, is indicated for the first-line
treatment of patients with metastatic squamous NSCLC.
KEYTRUDA, as a single agent, is indicated for the first-line
treatment of patients with NSCLC expressing PD-L1 [tumor proportion
score (TPS) ≥1%] as determined by an FDA-approved test, with no
EGFR or ALK genomic tumor aberrations, and is stage III where
patients are not candidates for surgical resection or definitive
chemoradiation, or metastatic.
KEYTRUDA, as a single agent, is 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.
Head and Neck Squamous Cell Cancer
KEYTRUDA, in combination with platinum and fluorouracil (FU), is
indicated for the first-line treatment of patients with metastatic
or with unresectable, recurrent head and neck squamous cell
carcinoma (HNSCC).
KEYTRUDA, as a single agent, is indicated for the first-line
treatment of patients with metastatic or with unresectable,
recurrent HNSCC whose tumors express PD-L1 [combined positive score
(CPS) ≥1] as determined by an FDA-approved test.
KEYTRUDA, as a single agent, is indicated for the treatment of
patients with recurrent or metastatic HNSCC with disease
progression on or after platinum-containing chemotherapy.
Classical Hodgkin Lymphoma
KEYTRUDA is indicated for the treatment of adult patients with
relapsed or refractory classical Hodgkin lymphoma (cHL).
KEYTRUDA is indicated for the treatment of pediatric patients
with refractory cHL, or cHL that has relapsed after 2 or more lines
of therapy.
Primary Mediastinal Large B-Cell Lymphoma
KEYTRUDA is indicated for the treatment of adult and pediatric
patients with refractory primary mediastinal large B-cell lymphoma
(PMBCL), or who have relapsed after 2 or more prior lines of
therapy. KEYTRUDA is not recommended for treatment of patients with
PMBCL who require urgent cytoreductive therapy.
Urothelial Carcinoma
KEYTRUDA is indicated for the treatment of patients with locally
advanced or metastatic urothelial carcinoma (mUC) who are not
eligible for cisplatin-containing chemotherapy and whose tumors
express PD-L1 (CPS ≥10), as determined by an FDA-approved test, or
in patients who are not eligible for any platinum-containing
chemotherapy regardless of PD-L1 status. 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 confirmatory trials.
KEYTRUDA is indicated for the treatment of patients with locally
advanced or metastatic urothelial carcinoma (mUC) who have disease
progression during or following platinum-containing chemotherapy or
within 12 months of neoadjuvant or adjuvant treatment with
platinum-containing chemotherapy.
KEYTRUDA is indicated for the treatment of patients with
Bacillus Calmette-Guerin (BCG)-unresponsive, high-risk, non-muscle
invasive bladder cancer (NMIBC) with carcinoma in situ (CIS) with
or without papillary tumors who are ineligible for or have elected
not to undergo cystectomy.
Microsatellite Instability-High or Mismatch Repair Deficient
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.
Microsatellite Instability-High or Mismatch Repair Deficient
Colorectal Cancer
KEYTRUDA is indicated for the first-line treatment of patients
with unresectable or metastatic MSI-H or dMMR colorectal cancer
(CRC).
Gastric Carcinoma
KEYTRUDA, in combination with trastuzumab, and fluoropyrimidine-
and platinum-containing chemotherapy, is indicated for the
first-line treatment of patients with locally advanced unresectable
or metastatic HER2-positive gastric or gastroesophageal junction
(GEJ) adenocarcinoma. 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.
KEYTRUDA, as a single agent, is indicated for the treatment of
patients with recurrent locally advanced or metastatic gastric or
gastroesophageal junction (GEJ) adenocarcinoma whose tumors express
PD-L1 (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.
Esophageal Carcinoma
KEYTRUDA is indicated for the treatment of patients with locally
advanced or metastatic esophageal or gastroesophageal junction
(GEJ) (tumors with epicenter 1 to 5 centimeters above the GEJ)
carcinoma that is not amenable to surgical resection or definitive
chemoradiation either:
- in combination with platinum- and fluoropyrimidine-based
chemotherapy, or
- as a single agent after one or more prior lines of systemic
therapy for patients with tumors of squamous cell histology that
express PD L1 (CPS ≥10) as determined by an FDA approved test.
Cervical Carcinoma
KEYTRUDA is indicated for the treatment of patients with
recurrent or metastatic cervical cancer with disease progression on
or after chemotherapy whose tumors express PD-L1 (CPS ≥1) as
determined by an FDA-approved test. 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.
Hepatocellular Carcinoma
KEYTRUDA is indicated for the treatment of patients with
hepatocellular carcinoma (HCC) who have been previously treated
with sorafenib. 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.
Merkel Cell Carcinoma
KEYTRUDA is indicated for the treatment of adult and pediatric
patients with recurrent locally advanced or metastatic Merkel cell
carcinoma (MCC). 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.
Renal Cell Carcinoma
KEYTRUDA, in combination with axitinib, is indicated for the
first-line treatment of patients with advanced renal cell carcinoma
(RCC).
Tumor Mutational Burden-High
KEYTRUDA is indicated for the treatment of adult and pediatric
patients with unresectable or metastatic tumor mutational
burden-high (TMB-H) [≥10 mutations/megabase] solid tumors, as
determined by an FDA-approved test, that have progressed following
prior treatment and who have no satisfactory alternative treatment
options. 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
TMB-H central nervous system cancers have not been established.
Cutaneous Squamous Cell Carcinoma
KEYTRUDA is indicated for the treatment of patients with
recurrent or metastatic cutaneous squamous cell carcinoma (cSCC)
that is not curable by surgery or radiation.
Triple-Negative Breast Cancer
KEYTRUDA, in combination with chemotherapy, is indicated for the
treatment of patients with locally recurrent unresectable or
metastatic triple-negative breast cancer (TNBC) whose tumors
express PD-L1 (CPS ≥10) as determined by an FDA-approved test. This
indication is approved under accelerated approval based on
progression-free survival. Continued approval for this indication
may be contingent upon verification and description of clinical
benefit in the confirmatory trials.
Selected Important Safety Information for KEYTRUDA
Severe and Fatal Immune-Mediated Adverse Reactions
KEYTRUDA is a monoclonal antibody that belongs to a class of
drugs that bind to either the programmed death receptor-1 (PD-1) or
the programmed death ligand 1 (PD-L1), blocking the PD-1/PD-L1
pathway, thereby removing inhibition of the immune response,
potentially breaking peripheral tolerance and inducing
immune-mediated adverse reactions. Immune-mediated adverse
reactions, which may be severe or fatal, can occur in any organ
system or tissue, can affect more than one body system
simultaneously, and can occur at any time after starting treatment
or after discontinuation of treatment. Important immune-mediated
adverse reactions listed here may not include all possible severe
and fatal immune-mediated adverse reactions.
Monitor patients closely for symptoms and signs that may be
clinical manifestations of underlying immune-mediated adverse
reactions. Early identification and management are essential to
ensure safe use of anti–PD-1/PD-L1 treatments. Evaluate liver
enzymes, creatinine, and thyroid function at baseline and
periodically during treatment. In cases of suspected
immune-mediated adverse reactions, initiate appropriate workup to
exclude alternative etiologies, including infection. Institute
medical management promptly, including specialty consultation as
appropriate.
Withhold or permanently discontinue KEYTRUDA depending on
severity of the immune-mediated adverse reaction. In general, if
KEYTRUDA requires interruption or discontinuation, administer
systemic corticosteroid therapy (1 to 2 mg/kg/day prednisone or
equivalent) until improvement to Grade 1 or less. Upon improvement
to Grade 1 or less, initiate corticosteroid taper and continue to
taper over at least 1 month. Consider administration of other
systemic immunosuppressants in patients whose adverse reactions are
not controlled with corticosteroid therapy.
Immune-Mediated Pneumonitis
KEYTRUDA can cause immune-mediated pneumonitis. The incidence is
higher in patients who have received prior thoracic radiation.
Immune-mediated pneumonitis occurred in 3.4% (94/2799) of patients
receiving KEYTRUDA, including fatal (0.1%), Grade 4 (0.3%), Grade 3
(0.9%), and Grade 2 (1.3%) reactions. Systemic corticosteroids were
required in 67% (63/94) of patients. Pneumonitis led to permanent
discontinuation of KEYTRUDA in 1.3% (36) and withholding in 0.9%
(26) of patients. All patients who were withheld reinitiated
KEYTRUDA after symptom improvement; of these, 23% had recurrence.
Pneumonitis resolved in 59% of the 94 patients.
Pneumonitis occurred in 8% (31/389) of adult patients with cHL
receiving KEYTRUDA as a single agent, including Grades 3-4 in 2.3%
of patients. Patients received high-dose corticosteroids for a
median duration of 10 days (range: 2 days to 53 months).
Pneumonitis rates were similar in patients with and without prior
thoracic radiation. Pneumonitis led to discontinuation of KEYTRUDA
in 5.4% (21) of patients. Of the patients who developed
pneumonitis, 42% of these patients interrupted KEYTRUDA, 68%
discontinued KEYTRUDA, and 77% had resolution.
Immune-Mediated Colitis
KEYTRUDA can cause immune-mediated colitis, which may present
with diarrhea. Cytomegalovirus infection/reactivation has been
reported in patients with corticosteroid-refractory immune-mediated
colitis. In cases of corticosteroid-refractory colitis, consider
repeating infectious workup to exclude alternative etiologies.
Immune-mediated colitis occurred in 1.7% (48/2799) of patients
receiving KEYTRUDA, including Grade 4 (<0.1%), Grade 3 (1.1%),
and Grade 2 (0.4%) reactions. Systemic corticosteroids were
required in 69% (33/48); additional immunosuppressant therapy was
required in 4.2% of patients. Colitis led to permanent
discontinuation of KEYTRUDA in 0.5% (15) and withholding in 0.5%
(13) of patients. All patients who were withheld reinitiated
KEYTRUDA after symptom improvement; of these, 23% had recurrence.
Colitis resolved in 85% of the 48 patients.
Hepatotoxicity and Immune-Mediated
Hepatitis
KEYTRUDA as a Single Agent
KEYTRUDA can cause immune-mediated hepatitis. Immune-mediated
hepatitis occurred in 0.7% (19/2799) of patients receiving
KEYTRUDA, including Grade 4 (<0.1%), Grade 3 (0.4%), and Grade 2
(0.1%) reactions. Systemic corticosteroids were required in 68%
(13/19) of patients; additional immunosuppressant therapy was
required in 11% of patients. Hepatitis led to permanent
discontinuation of KEYTRUDA in 0.2% (6) and withholding in 0.3% (9)
of patients. All patients who were withheld reinitiated KEYTRUDA
after symptom improvement; of these, none had recurrence. Hepatitis
resolved in 79% of the 19 patients.
KEYTRUDA with Axitinib
KEYTRUDA in combination with axitinib can cause hepatic
toxicity. Monitor liver enzymes before initiation of and
periodically throughout treatment. Consider monitoring more
frequently as compared to when the drugs are administered as single
agents. For elevated liver enzymes, interrupt KEYTRUDA and
axitinib, and consider administering corticosteroids as needed.
With the combination of KEYTRUDA and axitinib, Grades 3 and 4
increased alanine aminotransferase (ALT) (20%) and increased
aspartate aminotransferase (AST) (13%) were seen, which was at a
higher frequency compared to KEYTRUDA alone. Fifty-nine percent of
the patients with increased ALT received systemic corticosteroids.
In patients with ALT ≥3 times upper limit of normal (ULN) (Grades
2-4, n=116), ALT resolved to Grades 0-1 in 94%. Among the 92
patients who were rechallenged with either KEYTRUDA (n=3) or
axitinib (n=34) administered as a single agent or with both (n=55),
recurrence of ALT ≥3 times ULN was observed in 1 patient receiving
KEYTRUDA, 16 patients receiving axitinib, and 24 patients receiving
both. All patients with a recurrence of ALT ≥3 ULN subsequently
recovered from the event.
Immune-Mediated
Endocrinopathies
Adrenal Insufficiency
KEYTRUDA can cause primary or secondary adrenal insufficiency.
For Grade 2 or higher, initiate symptomatic treatment, including
hormone replacement as clinically indicated. Withhold KEYTRUDA
depending on severity. Adrenal insufficiency occurred in 0.8%
(22/2799) of patients receiving KEYTRUDA, including Grade 4
(<0.1%), Grade 3 (0.3%), and Grade 2 (0.3%) reactions. Systemic
corticosteroids were required in 77% (17/22) of patients; of these,
the majority remained on systemic corticosteroids. Adrenal
insufficiency led to permanent discontinuation of KEYTRUDA in
<0.1% (1) and withholding in 0.3% (8) of patients. All patients
who were withheld reinitiated KEYTRUDA after symptom
improvement.
Hypophysitis
KEYTRUDA can cause immune-mediated hypophysitis. Hypophysitis
can present with acute symptoms associated with mass effect such as
headache, photophobia, or visual field defects. Hypophysitis can
cause hypopituitarism. Initiate hormone replacement as indicated.
Withhold or permanently discontinue KEYTRUDA depending on severity.
Hypophysitis occurred in 0.6% (17/2799) of patients receiving
KEYTRUDA, including Grade 4 (<0.1%), Grade 3 (0.3%), and Grade 2
(0.2%) reactions. Systemic corticosteroids were required in 94%
(16/17) of patients; of these, the majority remained on systemic
corticosteroids. Hypophysitis led to permanent discontinuation of
KEYTRUDA in 0.1% (4) and withholding in 0.3% (7) of patients. All
patients who were withheld reinitiated KEYTRUDA after symptom
improvement.
Thyroid Disorders
KEYTRUDA can cause immune-mediated thyroid disorders.
Thyroiditis can present with or without endocrinopathy.
Hypothyroidism can follow hyperthyroidism. Initiate hormone
replacement for hypothyroidism or institute medical management of
hyperthyroidism as clinically indicated. Withhold or permanently
discontinue KEYTRUDA depending on severity. Thyroiditis occurred in
0.6% (16/2799) of patients receiving KEYTRUDA, including Grade 2
(0.3%). None discontinued, but KEYTRUDA was withheld in <0.1%
(1) of patients.
Hyperthyroidism occurred in 3.4% (96/2799) of patients receiving
KEYTRUDA, including Grade 3 (0.1%) and Grade 2 (0.8%). It led to
permanent discontinuation of KEYTRUDA in <0.1% (2) and
withholding in 0.3% (7) of patients. All patients who were withheld
reinitiated KEYTRUDA after symptom improvement. Hypothyroidism
occurred in 8% (237/2799) of patients receiving KEYTRUDA, including
Grade 3 (0.1%) and Grade 2 (6.2%). It led to permanent
discontinuation of KEYTRUDA in <0.1% (1) and withholding in 0.5%
(14) of patients. All patients who were withheld reinitiated
KEYTRUDA after symptom improvement. The majority of patients with
hypothyroidism required long-term thyroid hormone replacement. The
incidence of new or worsening hypothyroidism was higher in 1185
patients with HNSCC, occurring in 16% of patients receiving
KEYTRUDA as a single agent or in combination with platinum and FU,
including Grade 3 (0.3%) hypothyroidism. The incidence of new or
worsening hypothyroidism was higher in 389 adult patients with cHL
(17%) receiving KEYTRUDA as a single agent, including Grade 1
(6.2%) and Grade 2 (10.8%) hypothyroidism.
Type 1 Diabetes Mellitus (DM), Which Can Present With Diabetic
Ketoacidosis
Monitor patients for hyperglycemia or other signs and symptoms
of diabetes. Initiate treatment with insulin as clinically
indicated. Withhold KEYTRUDA depending on severity. Type 1 DM
occurred in 0.2% (6/2799) of patients receiving KEYTRUDA. It led to
permanent discontinuation in <0.1% (1) and withholding of
KEYTRUDA in <0.1% (1). All patients who were withheld
reinitiated KEYTRUDA after symptom improvement.
Immune-Mediated Nephritis With Renal
Dysfunction
KEYTRUDA can cause immune-mediated nephritis. Immune-mediated
nephritis occurred in 0.3% (9/2799) of patients receiving KEYTRUDA,
including Grade 4 (<0.1%), Grade 3 (0.1%), and Grade 2 (0.1%)
reactions. Systemic corticosteroids were required in 89% (8/9) of
patients. Nephritis led to permanent discontinuation of KEYTRUDA in
0.1% (3) and withholding in 0.1% (3) of patients. All patients who
were withheld reinitiated KEYTRUDA after symptom improvement; of
these, none had recurrence. Nephritis resolved in 56% of the 9
patients.
Immune-Mediated Dermatologic Adverse
Reactions
KEYTRUDA can cause immune-mediated rash or dermatitis.
Exfoliative dermatitis, including Stevens-Johnson syndrome, drug
rash with eosinophilia and systemic symptoms, and toxic epidermal
necrolysis, has occurred with anti–PD-1/PD-L1 treatments. Topical
emollients and/or topical corticosteroids may be adequate to treat
mild to moderate nonexfoliative rashes. Withhold or permanently
discontinue KEYTRUDA depending on severity. Immune-mediated
dermatologic adverse reactions occurred in 1.4% (38/2799) of
patients receiving KEYTRUDA, including Grade 3 (1%) and Grade 2
(0.1%) reactions. Systemic corticosteroids were required in 40%
(15/38) of patients. These reactions led to permanent
discontinuation in 0.1% (2) and withholding of KEYTRUDA in 0.6%
(16) of patients. All patients who were withheld reinitiated
KEYTRUDA after symptom improvement; of these, 6% had recurrence.
The reactions resolved in 79% of the 38 patients.
Other Immune-Mediated Adverse
Reactions
The following clinically significant immune-mediated adverse
reactions occurred at an incidence of <1% (unless otherwise
noted) in patients who received KEYTRUDA or were reported with the
use of other anti–PD-1/PD-L1 treatments. Severe or fatal cases have
been reported for some of these adverse reactions.
Cardiac/Vascular: Myocarditis, pericarditis, vasculitis; Nervous
System: Meningitis, encephalitis, myelitis and demyelination,
myasthenic syndrome/myasthenia gravis (including exacerbation),
Guillain-Barré syndrome, nerve paresis, autoimmune neuropathy;
Ocular: Uveitis, iritis and other ocular inflammatory toxicities
can occur. Some cases can be associated with retinal detachment.
Various grades of visual impairment, including blindness, can
occur. If uveitis occurs in combination with other immune-mediated
adverse reactions, consider a Vogt-Koyanagi-Harada-like syndrome,
as this may require treatment with systemic steroids to reduce the
risk of permanent vision loss; Gastrointestinal: Pancreatitis, to
include increases in serum amylase and lipase levels, gastritis,
duodenitis; Musculoskeletal and Connective Tissue:
Myositis/polymyositis rhabdomyolysis (and associated sequelae,
including renal failure), arthritis (1.5%), polymyalgia rheumatica;
Endocrine: Hypoparathyroidism; Hematologic/Immune: Hemolytic
anemia, aplastic anemia, hemophagocytic lymphohistiocytosis,
systemic inflammatory response syndrome, histiocytic necrotizing
lymphadenitis (Kikuchi lymphadenitis), sarcoidosis, immune
thrombocytopenic purpura, solid organ transplant rejection.
Infusion-Related Reactions
KEYTRUDA can cause severe or life-threatening infusion-related
reactions, including hypersensitivity and anaphylaxis, which have
been reported in 0.2% of 2799 patients receiving KEYTRUDA. Monitor
for signs and symptoms of infusion-related reactions. Interrupt or
slow the rate of infusion for Grade 1 or Grade 2 reactions. For
Grade 3 or Grade 4 reactions, stop infusion and permanently
discontinue KEYTRUDA.
Complications of Allogeneic Hematopoietic Stem Cell
Transplantation (HSCT)
Fatal and other serious complications can occur in patients who
receive allogeneic HSCT before or after anti–PD-1/PD-L1 treatment.
Transplant-related complications include hyperacute
graft-versus-host disease (GVHD), acute and chronic GVHD, hepatic
veno-occlusive disease after reduced intensity conditioning, and
steroid-requiring febrile syndrome (without an identified
infectious cause). These complications may occur despite
intervening therapy between anti–PD-1/PD-L1 treatment and
allogeneic HSCT. Follow patients closely for evidence of these
complications and intervene promptly. Consider the benefit vs risks
of using anti–PD-1/PD-L1 treatments prior to or after an allogeneic
HSCT.
Increased Mortality in Patients With Multiple Myeloma
In 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 an
anti–PD-1/PD-L1 treatment in this combination is not recommended
outside of controlled trials.
Embryofetal Toxicity
Based on its mechanism of action, KEYTRUDA can cause fetal harm
when administered to a pregnant woman. Advise women of this
potential risk. In females of reproductive potential, verify
pregnancy status prior to initiating KEYTRUDA and advise them to
use effective contraception during treatment and for 4 months after
the last dose.
Adverse Reactions
In KEYNOTE-006, KEYTRUDA was discontinued due to adverse
reactions in 9% of 555 patients with advanced melanoma; adverse
reactions leading to permanent 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%).
The most common adverse reactions (≥20%) with KEYTRUDA were fatigue
(28%), diarrhea (26%), rash (24%), and nausea (21%).
In KEYNOTE-054, KEYTRUDA was permanently discontinued due to
adverse reactions in 14% of 509 patients; the most common (≥1%)
were pneumonitis (1.4%), colitis (1.2%), and diarrhea (1%). Serious
adverse reactions occurred in 25% of patients receiving KEYTRUDA.
The most common adverse reaction (≥20%) with KEYTRUDA was diarrhea
(28%).
In KEYNOTE-189, when KEYTRUDA was administered with pemetrexed
and platinum chemotherapy in metastatic nonsquamous NSCLC, KEYTRUDA
was discontinued due to adverse reactions in 20% of 405 patients.
The most common adverse reactions resulting in permanent
discontinuation of KEYTRUDA were pneumonitis (3%) and acute kidney
injury (2%). The most common adverse reactions (≥20%) with KEYTRUDA
were nausea (56%), fatigue (56%), constipation (35%), diarrhea
(31%), decreased appetite (28%), rash (25%), vomiting (24%), cough
(21%), dyspnea (21%), and pyrexia (20%).
In KEYNOTE-407, when KEYTRUDA was administered with carboplatin
and either paclitaxel or paclitaxel protein-bound in metastatic
squamous NSCLC, KEYTRUDA was discontinued due to adverse reactions
in 15% of 101 patients. The most frequent serious adverse reactions
reported in at least 2% of patients were febrile neutropenia,
pneumonia, and urinary tract infection. Adverse reactions observed
in KEYNOTE-407 were similar to those observed in KEYNOTE-189 with
the exception that increased incidences of alopecia (47% vs 36%)
and peripheral neuropathy (31% vs 25%) were observed in the
KEYTRUDA and chemotherapy arm compared to the placebo and
chemotherapy arm in KEYNOTE-407.
In KEYNOTE-042, KEYTRUDA was discontinued due to adverse
reactions in 19% of 636 patients with advanced NSCLC; the most
common were pneumonitis (3%), death due to unknown cause (1.6%),
and pneumonia (1.4%). The most frequent serious adverse reactions
reported in at least 2% of patients were pneumonia (7%),
pneumonitis (3.9%), pulmonary embolism (2.4%), and pleural effusion
(2.2%). The most common adverse reaction (≥20%) was fatigue
(25%).
In KEYNOTE-010, KEYTRUDA monotherapy was discontinued due to
adverse reactions in 8% of 682 patients with metastatic NSCLC; the
most common was pneumonitis (1.8%). The most common adverse
reactions (≥20%) were decreased appetite (25%), fatigue (25%),
dyspnea (23%), and nausea (20%).
In KEYNOTE-048, KEYTRUDA monotherapy was discontinued due to
adverse events in 12% of 300 patients with HNSCC; the most common
adverse reactions leading to permanent discontinuation were sepsis
(1.7%) and pneumonia (1.3%). The most common adverse reactions
(≥20%) were fatigue (33%), constipation (20%), and rash (20%).
In KEYNOTE-048, when KEYTRUDA was administered in combination
with platinum (cisplatin or carboplatin) and FU chemotherapy,
KEYTRUDA was discontinued due to adverse reactions in 16% of 276
patients with HNSCC. The most common adverse reactions resulting in
permanent discontinuation of KEYTRUDA were pneumonia (2.5%),
pneumonitis (1.8%), and septic shock (1.4%). The most common
adverse reactions (≥20%) were nausea (51%), fatigue (49%),
constipation (37%), vomiting (32%), mucosal inflammation (31%),
diarrhea (29%), decreased appetite (29%), stomatitis (26%), and
cough (22%).
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 (≥20%)
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 who received KEYTRUDA
as a monotherapy, with the exception of increased incidences of
facial edema and new or worsening hypothyroidism.
In KEYNOTE-204, KEYTRUDA was discontinued due to adverse
reactions in 14% of 148 patients with cHL. Serious adverse
reactions occurred in 30% of patients receiving KEYTRUDA; those ≥1%
were pneumonitis, pneumonia, pyrexia, myocarditis, acute kidney
injury, febrile neutropenia, and sepsis. Three patients died from
causes other than disease progression: 2 from complications after
allogeneic HSCT and 1 from unknown cause. The most common adverse
reactions (≥20%) were upper respiratory tract infection (41%),
musculoskeletal pain (32%), diarrhea (22%), and pyrexia, fatigue,
rash, and cough (20% each).
In KEYNOTE-087, KEYTRUDA was discontinued due to adverse
reactions in 5% of 210 patients with cHL. Serious adverse reactions
occurred in 16% of patients; those ≥1% were pneumonia, pneumonitis,
pyrexia, dyspnea, GVHD, and herpes zoster. Two patients died from
causes other than disease progression: 1 from GVHD after subsequent
allogeneic HSCT and 1 from septic shock. The most common adverse
reactions (≥20%) were fatigue (26%), pyrexia (24%), cough (24%),
musculoskeletal pain (21%), diarrhea (20%), and rash (20%).
In KEYNOTE-170, KEYTRUDA was discontinued due to adverse
reactions in 8% of 53 patients with PMBCL. Serious adverse
reactions occurred in 26% of patients and included arrhythmia (4%),
cardiac tamponade (2%), myocardial infarction (2%), pericardial
effusion (2%), and pericarditis (2%). Six (11%) patients died
within 30 days of start of treatment. The most common adverse
reactions (≥20%) were musculoskeletal pain (30%), upper respiratory
tract infection and pyrexia (28% each), cough (26%), fatigue (23%),
and dyspnea (21%).
In KEYNOTE-052, KEYTRUDA was discontinued due to adverse
reactions in 11% of 370 patients with locally advanced or
metastatic urothelial carcinoma. Serious adverse reactions occurred
in 42% of patients; those ≥2% were urinary tract infection,
hematuria, acute kidney injury, pneumonia, and urosepsis. The most
common adverse reactions (≥20%) were fatigue (38%), musculoskeletal
pain (24%), decreased appetite (22%), constipation (21%), rash
(21%), and diarrhea (20%).
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%).
Serious adverse reactions occurred in 39% of KEYTRUDA-treated
patients; those ≥2% were urinary tract infection, pneumonia,
anemia, and pneumonitis. The most common adverse reactions (≥20%)
in patients who received KEYTRUDA were fatigue (38%),
musculoskeletal pain (32%), pruritus (23%), decreased appetite
(21%), nausea (21%), and rash (20%).
In KEYNOTE-057, KEYTRUDA was discontinued due to adverse
reactions in 11% of 148 patients with high-risk NMIBC. The most
common adverse reaction resulting in permanent discontinuation of
KEYTRUDA was pneumonitis (1.4%). Serious adverse reactions occurred
in 28% of patients; those ≥2% were pneumonia (3%), cardiac ischemia
(2%), colitis (2%), pulmonary embolism (2%), sepsis (2%), and
urinary tract infection (2%). The most common adverse reactions
(≥20%) were fatigue (29%), diarrhea (24%), and rash (24%).
Adverse reactions occurring in patients with MSI-H or dMMR CRC
were similar to those occurring in patients with melanoma or NSCLC
who received KEYTRUDA as a monotherapy.
In KEYNOTE-811, when KEYTRUDA was administered in combination
with trastuzumab, fluoropyrimidine- and platinum-containing
chemotherapy, KEYTRUDA was discontinued due to adverse reactions in
6% of 217 patients with locally advanced unresectable or metastatic
HER2-positive gastric or gastroesophageal junction (GEJ)
adenocarcinoma. The most common adverse reaction resulting in
permanent discontinuation was pneumonitis (1.4%). In the KEYTRUDA
arm versus placebo, there was a difference of ≥5% incidence between
patients treated with KEYTRUDA versus standard of care for diarrhea
(53% vs 44%) and nausea (49% vs 44%).
The most common adverse reactions (≥20%) in patients receiving
KEYTRUDA in combination with chemotherapy were fatigue/asthenia,
nausea, constipation, diarrhea, decreased appetite, rash, vomiting,
cough, dyspnea, pyrexia, alopecia, peripheral neuropathy, mucosal
inflammation, stomatitis, headache, and weight loss.
Adverse reactions occurring in patients with gastric cancer who
received KEYTRUDA as a monotherapy were similar to those occurring
in patients with melanoma or NSCLC who received KEYTRUDA as a
monotherapy.
In KEYNOTE-590, when KEYTRUDA was administered with cisplatin
and fluorouracil to patients with metastatic or locally advanced
esophageal or GEJ (tumors with epicenter 1 to 5 centimeters above
the GEJ) carcinoma who were not candidates for surgical resection
or definitive chemoradiation, KEYTRUDA was discontinued due to
adverse reactions in 15% of 370 patients. The most common adverse
reactions resulting in permanent discontinuation of KEYTRUDA (≥1%)
were pneumonitis (1.6%), acute kidney injury (1.1%), and pneumonia
(1.1%). The most common adverse reactions (≥20%) with KEYTRUDA in
combination with chemotherapy were nausea (67%), fatigue (57%),
decreased appetite (44%), constipation (40%), diarrhea (36%),
vomiting (34%), stomatitis (27%), and weight loss (24%).
Adverse reactions occurring in patients with esophageal cancer
who received KEYTRUDA as a monotherapy were similar to those
occurring in patients with melanoma or NSCLC who received KEYTRUDA
as a monotherapy.
In KEYNOTE-158, KEYTRUDA was discontinued due to adverse
reactions in 8% of 98 patients with recurrent or metastatic
cervical cancer. Serious adverse reactions occurred in 39% of
patients receiving KEYTRUDA; the most frequent included anemia
(7%), fistula, hemorrhage, and infections [except urinary tract
infections] (4.1% each). The most common adverse reactions (≥20%)
were fatigue (43%), musculoskeletal pain (27%), diarrhea (23%),
pain and abdominal pain (22% each), and decreased appetite
(21%).
Adverse reactions occurring in patients with hepatocellular
carcinoma (HCC) were generally similar to those in patients with
melanoma or NSCLC who received KEYTRUDA as a monotherapy, with the
exception of increased incidences of ascites (8% Grades 3-4) and
immune-mediated hepatitis (2.9%). Laboratory abnormalities (Grades
3-4) that occurred at a higher incidence were elevated AST (20%),
ALT (9%), and hyperbilirubinemia (10%).
Among the 50 patients with MCC enrolled in study KEYNOTE-017,
adverse reactions occurring in patients with MCC were generally
similar to those occurring in patients with melanoma or NSCLC who
received KEYTRUDA as a monotherapy. Laboratory abnormalities
(Grades 3-4) that occurred at a higher incidence were elevated AST
(11%) and hyperglycemia (19%).
In KEYNOTE-426, when KEYTRUDA was administered in combination
with axitinib, fatal adverse reactions occurred in 3.3% of 429
patients. Serious adverse reactions occurred in 40% of patients,
the most frequent (≥1%) were hepatotoxicity (7%), diarrhea (4.2%),
acute kidney injury (2.3%), dehydration (1%), and pneumonitis (1%).
Permanent discontinuation due to an adverse reaction occurred in
31% of patients; KEYTRUDA only (13%), axitinib only (13%), and the
combination (8%); the most common were hepatotoxicity (13%),
diarrhea/colitis (1.9%), acute kidney injury (1.6%), and
cerebrovascular accident (1.2%). The most common adverse reactions
(≥20%) were diarrhea (56%), fatigue/asthenia (52%), hypertension
(48%), hepatotoxicity (39%), hypothyroidism (35%), decreased
appetite (30%), palmar-plantar erythrodysesthesia (28%), nausea
(28%), stomatitis/mucosal inflammation (27%), dysphonia (25%), rash
(25%), cough (21%), and constipation (21%).
Adverse reactions occurring in patients with TMB-H cancer were
similar to those occurring in patients with other solid tumors who
received KEYTRUDA as a single agent.
Adverse reactions occurring in patients with cSCC were similar
to those occurring in patients with melanoma or NSCLC who received
KEYTRUDA as a monotherapy.
In KEYNOTE-355, when KEYTRUDA and chemotherapy (paclitaxel,
paclitaxel protein-bound, or gemcitabine and carboplatin) were
administered to patients with locally recurrent unresectable or
metastatic TNBC (n=596) who had not been previously treated with
chemotherapy in the metastatic setting, fatal adverse reactions
occurred in 2.5% of patients, including cardio-respiratory arrest
(0.7%) and septic shock (0.3%). Serious adverse reactions occurred
in 30% of patients receiving KEYTRUDA in combination with
chemotherapy, the most common were: pneumonia (2.9%), anemia
(2.2%), and thrombocytopenia (2%). KEYTRUDA was discontinued in 11%
of patients due to adverse reactions. The most common adverse
reactions resulting in permanent discontinuation (≥1%) were
increased ALT (2.2%), increased AST (1.5%), and pneumonitis (1.2%).
The most common adverse reactions (≥20%) in patients receiving
KEYTRUDA in combination with chemotherapy were: fatigue (48%),
nausea (44%), alopecia (34%), diarrhea and constipation (28% each),
vomiting and rash (26% each), cough (23%), decreased appetite
(21%), and headache (20%).
Lactation
Because of the potential for serious adverse reactions in
breastfed children, advise women not to breastfeed during treatment
and for 4 months after the final dose.
Pediatric Use
In KEYNOTE-051, 161 pediatric patients (62 pediatric patients
aged 6 months to younger than 12 years and 99 pediatric patients
aged 12 years to 17 years) were administered KEYTRUDA 2 mg/kg every
3 weeks. The median duration of exposure was 2.1 months (range: 1
day to 24 months).
Adverse reactions that occurred at a ≥10% higher rate in
pediatric patients when compared to adults were pyrexia (33%),
vomiting (30%), leukopenia (30%), upper respiratory tract infection
(29%), neutropenia (26%), headache (25%), and Grade 3 anemia
(17%).
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 130 years, Merck, 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 in
pursuit of our mission to save and improve lives. We demonstrate
our commitment to patients and population health by increasing
access to health care through far-reaching policies, programs and
partnerships. Today, Merck continues to be at the forefront of
research to prevent and treat diseases that threaten people and
animals – including cancer, infectious diseases such as HIV and
Ebola, and emerging animal diseases – as we aspire to be the
premier research-intensive biopharmaceutical company in the world.
For more information, visit www.merck.com and connect with us on
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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 the global outbreak of novel coronavirus disease
(COVID-19); the impact of pharmaceutical industry regulation and
health care legislation in the United States and internationally;
global trends toward health care cost containment; technological
advances, new products and patents attained by competitors;
challenges inherent in new product development, including obtaining
regulatory approval; the company’s ability to accurately predict
future market conditions; manufacturing difficulties or delays;
financial instability of international economies and sovereign
risk; dependence on the effectiveness of the company’s patents and
other protections for innovative products; and the exposure to
litigation, including patent litigation, and/or regulatory
actions.
The company undertakes no obligation to publicly update any
forward-looking statement, whether as a result of new information,
future events or otherwise. Additional factors that could cause
results to differ materially from those described in the
forward-looking statements can be found in the company’s 2020
Annual Report on Form 10-K and the company’s other filings with the
Securities and Exchange Commission (SEC) available at the SEC’s
Internet site (www.sec.gov).
Please see Prescribing Information for KEYTRUDA
(pembrolizumab) at
http://www.merck.com/product/usa/pi_circulars/k/keytruda/keytruda_pi.pdf
and Medication Guide for KEYTRUDA at
http://www.merck.com/product/usa/pi_circulars/k/keytruda/keytruda_mg.pdf.
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Media: Melissa Moody (215) 407-3536
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Investor: Peter Dannenbaum (908) 740-1037
Courtney Ronaldo (908) 740-6132
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