Celgene Receives Positive CHMP Opinion for OTEZLA® (apremilast), the First Oral PDE4 Inhibitor for the Treatment of Patients with Psoriasis and Psoriatic Arthritis

Celgene International Sàrl (NASDAQ: CELG), a wholly-owned subsidiary of Celgene Corporation, today announced that the European Medicines Agency’s (EMA) Committee for Medicinal Products for Human Use (CHMP) has adopted a positive opinion for OTEZLA® (apremilast), the Company’s oral selective inhibitor of phosphodiesterase 4 (PDE4), in two therapeutic indications: ¹

• For the treatment of moderate-to-severe chronic plaque psoriasis in adult patients who failed to respond to or, who have a contraindication to, or are intolerant to other systemic therapy including cyclosporine, methotrexate or psoralen and ultraviolet-A light (PUVA).
• Alone or in combination with Disease Modifying Antirheumatic Drugs (DMARDs), for the treatment of active psoriatic arthritis (PsA) in adult patients who have had an inadequate response or who have been intolerant to a prior DMARD therapy.

Psoriasis is an immune mediated skin condition characterised by raised scaly lesions on the skin. It affects approximately 14 million people across Europe² and about 125 million people worldwide.³ Plaque psoriasis, also called psoriasis vulgaris, is the most common form of the disease, representing about 80 percent of cases.⁴ Up to 30 percent of people with psoriasis may develop psoriatic arthritis, which involves pain and swelling in jointsand other manifestations and may lead to significant disability.⁵

“This CHMP positive opinion is an important step forward for people with psoriasis and psoriatic arthritis in Europe. These immune mediated diseases are frequently debilitating and cause severe physical and emotional pain to the individual,” stated Tuomo Pätsi, President, Celgene Europe, the Middle East and Africa (EMEA). “We are proud to have moved one step closer to offering patients OTEZLA®, a new, oral treatment approach that could significantly help control their symptoms and make a considerable difference to their quality of life.”

In the ESTEEM studies, which form the basis of CHMP’s positive opinion for apremilast in psoriasis, treatment resulted in significant and clinically meaningful improvements in plaque psoriasis as measured by PASI-75 (a 75 percent improvement in the Psoriasis Area Severity Index) scores at week 16, the primary endpoint.^6,7 Patients on apremilast also benefited from significant improvements in difficult to treat areas, such as nail and scalp, and itch, known to have a marked impact on patients’ quality of life and perception of disease severity.^8,9,10

In the PALACE program, which forms the basis for CHMP’s positive opinion for apremilast in psoriatic arthritis, treatment resulted in significant and clinically meaningful improvements in the signs and symptoms of psoriatic arthritis, as measured by the modified ACR-20 (a 20 percent improvement in the American College of Rheumatology disease activity criteria) response at 16 weeks, the primary endpoint. ^7,11 Patients on apremilast showed improvement across multiple disease manifestations specific to psoriatic arthritis, such as swollen and tender joints, as well as dactylitis, enthesitis and overall physical function.^12,13,14

In the two Phase III programs, PALACE and ESTEEM, the clinical response of OTEZLA was maintained through week 52 across multiple endpoints. ^15,16

Across these phase III clinical studies, the most commonly reported adverse reactions were consistently diarrhoea, nausea, upper respiratory tract infection, tension headache and headache.^6,11 These adverse reactions were mostly mild to moderate in severity. Gastrointestinal adverse reactions generally occurred within the first two weeks of treatment and usually resolved within four weeks.^6,11 During the placebo-controlled phase of the clinical trials, the rate of major adverse cardiac events, serious infections, including opportunistic infections, and malignancies, was comparable between placebo and apremilast groups.^6,11

OTEZLA® was approved on March 21, 2014 by the U.S. Food and Drug Administration (FDA) for the treatment of adults with active psoriatic arthritis and on September 23, 2014 for the treatment of patients with moderate to severe plaque psoriasis who are candidates for phototherapy or systemic therapy. In Canada, OTEZLA was approved for the treatment of moderate-to-severe plaque psoriasis in November 2014. A New Drug Submission (NDS) for psoriatic arthritis was submitted to Canadian Health Authorities in the second quarter of 2013. Marketing authorisation applications are ongoing in other countries, including Australia and Switzerland.

The European Commission, which generally follows the recommendation of the CHMP, is expected to make its final decision within two to three months. If approval is granted, detailed conditions for the use of this product will be described in the Summary of Product Characteristics (SmPC), which will be published in the revised European Public Assessment Report (EPAR).

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About OTEZLA®

OTEZLA® is an oral small-molecule inhibitor of phosphodiesterase 4 (PDE4) specific for cyclic AMP (cAMP). PDE4 inhibition results in increased intracellular cAMP levels which is thought to indirectly modulate the production of inflammatory mediators. The specific mechanism(s) by which OTEZLA® exerts its therapeutic action in patients with psoriasis or psoriatic arthritis is not well defined.¹⁷ Find out more about PDE4 inhibition, by clicking here: http://discoverpde4.com/

About ESTEEM 1 and 2

ESTEEM 1 and 2 are two large pivotal phase III randomized, placebo-controlled studies evaluating apremilast in patients with a diagnosis of moderate to severe plaque psoriasis for at least 12 months prior to screening, and who were also candidates for phototherapy or systemic therapy. Approximately 1,250 patients were randomized 2:1 to receive either apremilast 30 mg twice daily or placebo after an initial five-day titration period, for the first 16 weeks, followed by a maintenance phase from weeks 16-32 in which placebo patients were switched to apremilast 30 mg twice daily through week 32, and a randomized withdrawal phase for responders from week 32 to week 52 based on their initial apremilast randomization and Psoriasis Area and Severity Index (PASI) response. Approximately 30 percent of all patients had received prior phototherapy and 54 percent had received prior conventional systemic and/or biologic therapy.