“In clinical trials, XELJANZ demonstrated consistent efficacy across a broad range of clinical measures and patient types, including patients who inadequately responded to non-biologic DMARDs and anti-TNF agents, and it has a safety profile that is well-characterized to date,” said Geno Germano, president and general manager, Specialty Care and Oncology, Pfizer. “We are proud of the comprehensive data that support the use of XELJANZ, and we are excited to make it available to patients in the U.S. as a powerful oral option that can be taken as a second-line treatment with or without methotrexate.”
Safety findings observed in the overall XELJANZ RA program include serious and other important infections, including tuberculosis and herpes zoster; malignancies, including lymphoma; gastrointestinal perforations; decreased neutrophil and lymphocyte counts; decreased hemoglobin; liver enzyme elevations; and lipid elevations.
The most common serious adverse events were serious infections. The most commonly reported adverse events were upper respiratory tract infections, headache, diarrhea and nasopharyngitis.
Regarding the potential for further assessment by the FDA of the inhibition of structural damage, Pfizer plans to immediately discuss with the FDA the submission of the results of the previously disclosed ORAL Start (A3921069) study, which demonstrated significant efficacy of XELJANZ taken as monotherapy versus methotrexate, including inhibiting structural damage. The ORAL Start study was ongoing at the time of the New Drug Application submission and was not included in the original application to the FDA.In the clinical trials, XELJANZ was studied in both a 5 mg and 10 mg twice-daily dosing regimen. The FDA has approved the 5 mg twice-daily dose in the second-line setting and has indicated that further data are required to assess the benefit: risk profile of the 10 mg twice-daily dose. Pfizer will continue to generate additional clinical data on the 10 mg twice-daily dose and work with the FDA to understand the additional data needed for further assessment of the 10 mg twice-daily dose.
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