Amgen Inc and Wyeth Pharmaceuticals, a division of Wyeth, today announced that the US Food and Drug Administration (FDA)
approved an expanded indication for Enbrel(R) (etanercept) to improve physical function in patients with psoriatic arthritis.
ENBREL is the first and only treatment to receive this expanded indication. In addition, the FDA approved an update to the
ENBREL label to include new radiographic data demonstrating that ENBREL continued to inhibit the progression of joint
destruction for two years among most psoriatic arthritis patients who received ongoing therapy.
ENBREL received its approval to treat signs and symptoms of psoriatic arthritis in 2002. With this expanded approval, ENBREL
is now indicated for reducing signs and symptoms, inhibiting the progression of joint destruction of active arthritis
associated with psoriatic arthritis, and improving physical function in patients with psoriatic arthritis. ENBREL is also
approved to treat moderate-to-severe rheumatoid arthritis and juvenile rheumatoid arthritis, ankylosing spondylitis and
moderate-to-severe plaque psoriasis.
“This approval for improving physical function and the addition of the two-year radiographic data builds on the
well-established efficacy and safety profile of ENBREL in psoriatic arthritis. No other treatment has been FDA-approved to
provide efficacy for psoriatic arthritis patients using these multiple clinical measures,” said Will Dere, M.D., chief
medical officer and senior vice president of global development, Amgen. “ENBREL is unique because it has received 10 FDA
approvals in five distinct diseases and has been used by more than 280,000 patients worldwide across indications. ENBREL also
has 12 years of collective clinical experience.”
The expanded approval of ENBREL was based on significant improvements in physical function as assessed by the disability
index of the Health Assessment Questionnaire (HAQ), a test used to evaluate a patient’s ability to perform daily activities
such as dressing, walking and grooming, and the Medical Outcomes Study Short-Form Health Survey (SF-36), a measurement tool
that also assesses the physical impact of a disease.
Almost 40 percent of psoriatic arthritis patients taking ENBREL in this study achieved a HAQ score of zero, indicating no
functional disability at 24 weeks. In addition, the SF-36 found that many patients treated with ENBREL experienced a greater
improvement from baseline, compared to placebo, in their ability to participate in physical activities such as walking,
carrying groceries, or climbing a flight of stairs.
Psoriatic arthritis is a chronic, often destructive disease characterized by both joint inflammation and erosion, and is
associated with psoriatic skin lesions. The progressive joint pain and swelling, which is often coupled with painful, scaly,
red skin lesions, can disrupt a person’s ability to perform activities of daily life that most people take for granted such
as getting dressed, eating or walking. Approximately one million people suffer from psoriatic arthritis in the United States.
“We are pleased that ENBREL has shown the ability to inhibit the progression of joint destruction for a continuous two years
in most psoriatic arthritis patients in this study, which is vital in helping to ease the debilitating effects of this
disease,” said Gary L. Stiles, M.D., executive vice president and chief medical officer of Wyeth Pharmaceuticals. “Similar to
rheumatoid arthritis, ENBREL is the only treatment approved to provide long-term inhibition of joint destruction for most
ENBREL is the only soluble tumor necrosis factor (TNF) receptor approved to reduce signs and symptoms, induce major clinical
response, improve physical function, and inhibit the progression of structural damage in patients with moderately to severely
active rheumatoid arthritis (RA). ENBREL can be used alone or in combination with methotrexate.
ENBREL is the only treatment indicated to reduce the signs and symptoms, inhibit the progression of structural damage of
active arthritis, and improve physical function in patients with psoriatic arthritis. It is approved to reduce the signs and
symptoms of moderately to severely active polyarticular-course juvenile rheumatoid arthritis (JRA) in patients four years of
age or older who have had an inadequate response to one or more disease-modifying antirheumatic drugs (DMARDs). It is also
the first biologic approved to reduce the signs and symptoms in patients with active ankylosing spondylitis (AS). ENBREL is
indicated for the treatment of adult patients (18 years or older) with chronic moderate-to-severe plaque psoriasis who are
candidates for systemic therapy or phototherapy.
ENBREL has been used by more than 280,000 patients worldwide across indications.
ENBREL acts by binding TNF, one of the dominant inflammatory cytokines or regulatory proteins that play an important role in
both normal immune function and the cascade of reactions involved in the inflammatory process of RA, JRA, psoriasis,
psoriatic arthritis, and AS. The binding of ENBREL to TNF renders the bound TNF biologically inactive, resulting in
significant reduction in inflammatory activity.
What important information do I need to know about taking ENBREL?
ENBREL is a type of protein called a tumor necrosis factor (TNF) blocker that blocks the action of a substance your body’s
immune system makes called TNF. People with an immune disease, such as rheumatoid arthritis, ankylosing spondylitis,
psoriatic arthritis, and psoriasis, have too much TNF in their bodies. ENBREL can reduce the amount of TNF in the body to
normal levels, helping to treat your disease. But, in doing so, ENBREL can also lower the ability of your immune system to
All medicines have side effects, including ENBREL. Possible side effects of ENBREL include:
— Serious infections
— Many occurred in people prone to infection, such as those
with advanced or poorly controlled diabetes
— Some serious infections have been fatal
— Rare cases of tuberculosis have occurred
— What not to do
— Do not start ENBREL if you have an infection or are
allergic to ENBREL or its components
— What to do
— Tell your doctor if you are prone to infection
— Stop ENBREL if a serious infection occurs
— Contact your doctor if you have questions about ENBREL or
develop an infection
— Tell your doctor if you have ever been treated for heart
— Serious nervous system disorders such as multiple sclerosis,
seizures, or inflammation of the nerves of the eyes
— Tell your doctor if you have ever had any of these
disorders or if you develop them after starting ENBREL
— Rare reports of serious blood disorders (some fatal)
— Contact your doctor immediately if you develop symptoms
such as persistent fever, bruising, bleeding, or paleness
— In medical studies of all TNF blockers, including ENBREL, a
higher rate of lymphoma (a type of cancer) was seen compared
to the general population. The risk of lymphoma may be up to
several fold higher in rheumatoid arthritis and psoriasis
— The role of TNF blockers, including ENBREL, in the
development of lymphoma is unknown
— ENBREL can cause injection site reactions.
Amgen and Wyeth Pharmaceuticals, a division of Wyeth, market ENBREL in North America. Wyeth markets ENBREL outside of North
America. Immunex Corporation, a wholly owned subsidiary of Amgen, manufactures ENBREL. Additional information about ENBREL,
including full Prescribing Information, can be found on the website sponsored by the companies at ENBREL or by
calling toll free 888-4ENBREL (888-436-2735).
Amgen is a global biotechnology company that discovers, develops, manufactures, and markets important human therapeutics
based on advances in cellular and molecular biology.
Wyeth Pharmaceuticals, a division of Wyeth, has leading products in the areas of women’s health care, cardiovascular disease,
central nervous system, inflammation, transplantation, hemophilia, oncology, vaccines and nutritional products. Wyeth is one
of the world’s largest research-driven pharmaceutical and health care products companies. It is a leader in the discovery,
development, manufacturing, and marketing of pharmaceuticals, vaccines, biotechnology products, and nonprescription medicines
that improve the quality of life for people worldwide. The Company’s major divisions include Wyeth Pharmaceuticals, Wyeth
Consumer Healthcare, and Fort Dodge Animal Health.
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View drug information on Enbrel.