Schering-Plough and Merck to Develop Another New Cholesterol Lowering Medicine

New medicine will be fixed-dose combination of ezetimibe and atorvastatin

KENILWORTH, NJ, USA |  Mar 26, 2007 | 
Schering-Plough Corporation (NYSE: SGP) today announced that it has entered into an agreement with Merck & Co., Inc. to commence development of an ezetimibe and atorvastatin combination product.

"This important new combination therapy reflects the growing potential of ezetimibe," said Fred Hassan, chairman and chief executive officer of Schering-Plough. "Given the size of the worldwide market in which this product would compete, we believe the combination of ezetimibe with atorvastatin could be an important contributor to Schering-Plough's future," Hassan said.

The cholesterol-management market is one of the largest worldwide, with total global sales of $32 billion (IMS full year 2006 constant USD) and sales in the United States of $22 billion in 2006 (IMS Health).

The development program is timed such that this combination product could be available at the time that patent exclusivity for atorvastatin expires in the United States and internationally.

Through an existing joint venture, Schering-Plough and Merck have already collaborated successfully to develop and commercialize ZETIA(R) (ezetimibe) and VYTORIN(R) (ezetimibe/simvastatin) for lipid management in the United States and the rest of the world (excluding Japan), where the products in some countries are also marketed as EZETROL and INEGY, respectively.

"Ezetimibe was discovered by Schering-Plough Research Institute and represents an important innovation by Schering-Plough's scientists," said Thomas P. Koestler, Ph.D., executive vice president and president, Schering- Plough Research Institute (SPRI). "If approved, this new medicine should offer an advance for patients at risk for cardiovascular disease. This international collaboration, which already successfully draws upon the strengths and experience of both companies in world markets, creates the opportunity to develop yet another new option in the physician's armamentarium for the treatment of elevated LDL cholesterol, utilizing our proprietary compound ezetimibe," Koestler added.

ZETIA, which works in the digestive tract to inhibit the absorption of cholesterol, is complementary to the class of cholesterol-lowering agents known as statins, including atorvastatin, which work in the liver to reduce the production of cholesterol. In a multi-center, randomized, double-blind, placebo-controlled 12-week clinical trial in 628 patients with high cholesterol, the co-administration of atorvastatin (10 mg, 20 mg, 40 mg, 80 mg) with ZETIA 10 mg lowered LDL "bad" cholesterol by an average of 53 to 61 percent from baseline across the dosing range compared to average LDL cholesterol reductions of 37 to 54 percent with atorvastatin alone. ZETIA, either alone or in addition to a statin, has not been shown to prevent heart disease or heart attacks.

ZETIA is indicated, along with a healthy diet, for use either by itself or together with statins in patients with high cholesterol to reduce LDL cholesterol and total cholesterol when the response to diet has been inadequate. ZETIA is also marketed under the trade name EZETROL internationally. It is also available in a once-daily tablet with Zocor (simvastatin), a Merck statin and marketed under the brand names VYTORIN in the United States and INEGY and VYTORIN internationally.

Important information about ZETIA

ZETIA is a prescription medication and should not be taken by people who are allergic to any of its ingredients. When ZETIA is prescribed with a statin, it should not be taken by women who are nursing or pregnant or who may become pregnant, or by anyone with active liver disease. Statins should not be taken by anyone with these conditions. If you have ever had liver problems or are pregnant or nursing, your doctor will decide if ZETIA is right for you. Your doctor may do blood tests to check your liver before you start taking ZETIA with a statin and during treatment.

Due to the unknown effects of increased exposure to ZETIA in patients with moderate or severe hepatic insufficiency, ZETIA is not recommended in these patients. In clinical trials, there was no increased incidence of myopathy (muscle pain) or rhabdomyolysis (muscle breakdown) associated with ZETIA; however myopathy and rhabdomyolysis are known adverse reactions to statins and other lipid-lowering drugs. There are no adequate and well-controlled studies of ZETIA in pregnant women. ZETIA should not be used in pregnant or nursing women unless the benefit outweighs the potential risks.

When ZETIA was co-administered with a statin, consecutive elevations in liver enzymes, more than three times the upper limit of normal, were slightly higher than those with the statin alone (1.3 percent vs. 0.4 percent). These elevations were generally asymptomatic and returned to baseline after discontinuation of therapy or with continued treatment. When ZETIA was co- administered with fenofibrate, consecutive elevations in liver enzymes more than three times the upper limit of normal, were 2.7%, and 4.5% in patients treated with fenofibrate alone. Caution should be exercised when initiating ZETIA in patients treated with cyclosporine, particularly in patients with severe renal insufficiency, due to increased blood levels of ZETIA.

In clinical trials, most frequent side effects for ZETIA alone vs. placebo included: back pain (4.1 percent vs. 3.9 percent), arthralgia (3.8 percent vs. 3.4 percent), and fatigue (2.2 percent vs. 1.8 percent); for ZETIA plus statin vs. statin or placebo alone: back pain (4.3 percent vs. 3.7 percent vs. 3.5 percent), abdominal pain (3.5 percent vs. 3.1 percent vs. 2.3 percent), and fatigue (2.8 percent vs. 1.4 percent vs. 1.9 percent).

Important information about VYTORIN

VYTORIN contains simvastatin and ezetimibe. VYTORIN is indicated as adjunctive therapy to diet when diet alone is not enough, for the reduction of elevated total cholesterol, LDL cholesterol, Apo B, triglycerides and non-HDL cholesterol and to increase HDL cholesterol in patients with primary (heterozygous familial and non-familial) hypercholesterolemia or mixed hyperlipidemia. No incremental benefit of VYTORIN on cardiovascular morbidity and mortality over and above that demonstrated for simvastatin has been established.

VYTORIN is also indicated for the reduction of elevated total cholesterol and LDL cholesterol in patients with homozygous familial hypercholesterolemia, as an adjunct to other lipid-lowering treatments (e.g. LDL apheresis) or if such treatments are unavailable.

VYTORIN is a prescription medicine and should not be taken by people who are hypersensitive to any of its components. VYTORIN should not be taken by anyone with active liver disease or unexplained persistent elevations of serum transaminases. Women who are of childbearing age (unless highly unlikely to conceive), are nursing or who are pregnant should not take VYTORIN.

Selected cautionary information for VYTORIN

Muscle pain, tenderness or weakness in people taking VYTORIN should be reported to a doctor promptly because these could be signs of a serious side effect. VYTORIN should be discontinued if myopathy is diagnosed or suspected. To help avoid serious side effects, patients should talk to their doctor about medicine or food they should avoid while taking VYTORIN.

In three placebo-controlled, 12-week trials, the incidence of consecutive elevations (greater than or equal to 3 X ULN) in serum transaminases were 1.7 percent overall for patients treated with VYTORIN and 2.6 percent for patients treated with VYTORIN 10/80 mg. In controlled long-term (4 -week) extensions, which included both newly-treated and previously-treated patients, the incidence of consecutive elevations (greater than or equal to 3 X ULN) in serum transaminases was 1.8 percent overall and 3.6 percent for patients treated with VYTORIN 10/80 mg. These elevations in transaminases were generally asymptomatic, not associated with cholestasis and returned to baseline after discontinuation of therapy or with continued treatment. Doctors should perform blood tests before, and periodically during treatment with VYTORIN when clinically indicated to check for liver problems. People taking VYTORIN 10/80 mg should receive an additional liver function test prior to and three months after titration and periodically during the first year.

Due to the unknown effects of increased exposure to ezetimibe (an ingredient in VYTORIN) in patients with moderate or severe hepatic insufficiency, VYTORIN is not recommended in these patients. The safety and effectiveness of VYTORIN with fibrates have not been established; therefore, co-administration with fibrates is not recommended. Caution should be exercised when initiating VYTORIN in patients treated with cyclosporine and in patients with severe renal insufficiency.

VYTORIN has been evaluated for safety in more than 3,800 patients in clinical trials and was generally well tolerated at all doses (10/10 mg, 10/20 mg, 10/40 mg, 10/80 mg). In clinical trials, the most commonly reported side effects, regardless of cause, included headache (6.8 percent), upper respiratory tract infection (3.9 percent), myalgia (3.5 percent), influenza (2.6 percent) and extremity pain (2.3 percent).

About Schering-Plough

Schering-Plough is a global science-based health care company with leading prescription, consumer and animal health products. Through internal research and collaborations with partners, Schering-Plough discovers, develops, manufactures and markets advanced drug therapies to meet important medical needs. Schering-Plough's vision is to earn the trust of the physicians, patients and customers served by its approximately 33,500 people around the world. The company is based in Kenilworth, N.J., and its Web site is www.schering-plough.com.

SCHERING-PLOUGH DISCLOSURE NOTICE: The information in this press release includes certain "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements relate to expectations or forecasts of future events. Schering-Plough does not assume the obligation to update any forward-looking statement. Many factors could cause actual results to differ materially from Schering-Plough's forward-looking statements, including market forces, economic factors, product availability, current and future branded, generic or over-the-counter competition, the regulatory process, and any developments following regulatory approval, among other uncertainties. For further details about these and other factors that may impact the forward-looking statements, see Schering- Plough's Securities and Exchange Commission filings, including Part I Item 1A. Risk Factors listed in the Company's 2006 10-K.

Full prescribing information for ZETIA(R) and VYTORIN(R) may be found by visiting www.zetia.com or www.vytorin.com .

SOURCE Schering-Plough Corporation

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