This information does not have any impact on Shire's 2012 financial guidance.Notes to editors About REPLAGAL (agalsidase alfa) REPLAGAL is a human form of enzyme alpha-galactosidase A (α-Gal A) manufactured in a human cell line by gene activation. 2011 marked the 15th year of clinical experience with REPLAGAL, which is now approved in 46 countries worldwide. REPLAGAL is not currently approved for commercial sale in the U.S. REPLAGAL is the only human-cell-line-derived form of enzyme replacement therapy that is indicated for the long-term treatment of patients with a confirmed diagnosis of Fabry disease (α-Gal A deficiency). REPLAGAL Important Safety Information The most serious adverse reactions seen with REPLAGAL were hypersensitivity reactions. Infusion-related reactions were the most commonly observed adverse reactions in patients treated with REPLAGAL in clinical studies. Most side effects are mild to moderate and include headache, tingling, numbness, tremors, fatigue, change in temperature sensation, increased blood pressure, upset stomach, diarrhea, coughing, sore throat, difficulty sleeping, change in the taste of food, change in smell, difficulty speaking, acne, dry skin and eye problems. About 1 out of 10 patients may have a reaction during or shortly after infusion of REPLAGAL. These effects include chills and facial flushing (warmth and redness). As with all therapeutic proteins, there is a potential for immunogenicity. IgG antibodies appeared to develop following approximately 3 to 12 months of treatment. After 12 to 54 months of therapy, 17% of REPLAGAL treated patients were antibody positive whereas 7% showed evidence for the development of immunologic tolerance, based on the disappearance of IgG antibodies over time. No IgE antibodies have been detected in any patient receiving REPLAGAL. REPLAGAL is not available in all countries and prescribing information may differ between countries. Please consult your local prescribing information. SHIRE PLC Shire's strategic goal is to become the leading specialty biopharmaceutical company that focuses on meeting the needs of the specialist physician. Shire focuses its business on attention deficit hyperactivity disorder, human genetic therapies, gastrointestinal diseases and regenerative medicine as well as opportunities in other therapeutic areas to the extent they arise through acquisitions. Shire's in-licensing, merger and acquisition efforts are focused on products in specialist markets with strong intellectual property protection and global rights. Shire believes that a carefully selected and balanced portfolio of products with strategically aligned and relatively small-scale sales forces will deliver strong results.