Important Safety Information

  • Treatment with Jakafi can cause hematologic adverse reactions, including thrombocytopenia, anemia and neutropenia, which are each dose-related effects, with the most frequent being thrombocytopenia and anemia. A complete blood count must be performed before initiating therapy with Jakafi. Complete blood counts should be monitored as clinically indicated and dosing adjusted as required. The three most frequent non-hematologic adverse reactions were bruising, dizziness and headache
  • Patients with platelet counts <200 × 10 9/L at the start of therapy are more likely to develop thrombocytopenia during treatment. Thrombocytopenia was generally reversible and was usually managed by reducing the dose or temporarily withholding Jakafi. If clinically indicated, platelet transfusions may be administered
  • Patients developing anemia may require blood transfusions. Dose modifications of Jakafi for patients developing anemia may also be considered
  • Neutropenia (ANC <0.5 × 10 9/L) was generally reversible and was managed by temporarily withholding Jakafi
  • Patients should be assessed for the risk of developing serious bacterial, mycobacterial, fungal and viral infections. Active serious infections should have resolved before starting Jakafi. Physicians should carefully observe patients receiving Jakafi for signs and symptoms of infection (including herpes zoster) and initiate appropriate treatment promptly
  • A dose modification is recommended when administering Jakafi with strong CYP3A4 inhibitors or in patients with renal or hepatic impairment [see Dosage and Administration]. Patients should be closely monitored and the dose titrated based on safety and efficacy
  • There are no adequate and well-controlled studies of Jakafi in pregnant women. Use of Jakafi during pregnancy is not recommended and should only be used if the potential benefit justifies the potential risk to the fetus
  • Women taking Jakafi should not breast-feed. Discontinue nursing or discontinue the drug, taking into account the importance of the drug to the mother

For Full Prescribing Information for Jakafi, visit www.Jakafi.com.

Forward-Looking Statements

Except for the historical information set forth herein, the matters set forth in this press release, including without limitation statements regarding financial guidance about expected net product revenues, contract revenues, research and development expenses, selling, general and administrative expenses and interest expense, expectations regarding variations in research and development expenses, our plans and expectations with respect to Jakafi (ruxolitinib), including the potential efficacy and therapeutic and commercial value of Jakafi, our expectation regarding continued consistent growth, our expectation that results from the RESPONSE and RELIEF trials are expected to be part of a sNDA submission in 2014, our expectation of final results from the RECAP trial in the second half of 2013, and our expectation that results from the trials conducted by our collaboration partner Eli Lilly evaluating baricitinib in patients with moderate to severe psoriasis and diabetic nephropathy will be available in 2013 and 2014, respectively, contain predictions, estimates and other forward-looking statements.

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