Alexion Reports First Quarter 2013 Results

Alexion Pharmaceuticals, Inc. (NASDAQ: ALXN) today announced financial results and a development pipeline update for the three months ended March 31, 2013. The Company reported net product sales of Soliris® (eculizumab) of $338.9 million, an increase of 38 percent from the same period in 2012. Revenue performance for the quarter reflects steady additions of new patients with paroxysmal nocturnal hemoglobinuria (PNH) globally, and an increasing number of new patients with atypical Hemolytic Uremic Syndrome (aHUS) commencing Soliris treatment in the US and Western Europe.

“The first quarter was particularly noteworthy for the significant progress across our lead development programs. This included completing enrollment in the deceased-donor kidney transplant trial and the hypophosphatasia infant natural history study, initiating plans for a single myasthenia gravis registration trial, and accelerating our cPMP clinical programs,” said Leonard Bell, M.D., Chief Executive Officer of Alexion. “During this past quarter we continued to serve more patients with PNH around the world, as well as a growing number of aHUS patients in the US, with initial aHUS patients commencing treatment in countries of Western Europe. Further, in line with our longer term growth objectives, we have also announced earlier today that we are broadening and strengthening our executive leadership team.”

First Quarter 2013 Financial Results:

Alexion's non-GAAP operating results are GAAP operating results adjusted for the impact of certain items described below. A full reconciliation of GAAP results to non-GAAP results is included later in this press release.

First Quarter 2013 Non-GAAP Financial Results:

The Company reported non-GAAP net income of $131.3 million, or $0.65 per share, in the first quarter of 2013, compared to non-GAAP net income of $88.1 million, or $0.45 per share, in the first quarter of 2012.

Alexion's non-GAAP operating expenses for Q1 2013 were $164.4 million, compared to $119.9 million for Q1 2012. Non-GAAP research and development (R&D) expenses for Q1 2013 were $66.4 million, compared to $42.1 million for Q1 2012. Non-GAAP selling, general and administrative (SG&A) expenses for Q1 2013 were $97.9 million, compared to $77.9 million for Q1 2012.

First Quarter 2013 GAAP Financial Results:

Alexion reported GAAP net income of $82.2 million, or $0.41 per share, in the first quarter of 2013, compared to GAAP net income of $45.4 million, or $0.23 per share, in the first quarter of 2012.

On a GAAP basis, operating expenses for Q1 2013 were $186.7 million, compared to $146.4 million for Q1 2012. GAAP R&D expenses for Q1 2013 were $74.5 million, compared to $45.4 million for Q1 2012. GAAP SG&A expenses were $108.8 million for Q1 2013, compared to $87.2 million for Q1 2012.

Balance Sheet:

As of March 31, 2013, the Company had $1.02 billion in cash and cash equivalents compared to $989.5 million at December 31, 2012.

Research and Development Progress:

Alexion currently has development programs underway with its five highly innovative therapeutic candidates: eculizumab (Soliris) and four additional novel therapeutic candidates beyond eculizumab that have the potential to become first-in-class therapies for patients with other severe and ultra-rare disorders.

Ultra-Rare Disease Programs With Eculizumab

• Neurology: NMO - Alexion is preparing to commence what it expects to be a single Company-sponsored, multi-national, placebo-controlled, registration trial in relapsing neuromyelitis optica (NMO).
• Neurology: MG – Alexion is also preparing to commence what it expects to be a single Company-sponsored, multi-national, placebo-controlled, registration trial in severe refractory myasthenia gravis (MG).
• Nephrology: Kidney Transplant – Enrollment has now been completed in the Company-sponsored, multi-national deceased-donor kidney transplant trial in patients at elevated risk of antibody mediated rejection (AMR). Enrollment in the Company-sponsored, multi-national living-donor kidney transplant trial in patients at elevated risk of AMR is on-going. Alexion is also expanding its kidney transplant program to include a delayed-graft function (DGF) clinical trial.
• Nephrology: STEC-HUS – The Company is obtaining and analyzing additional longer-term control clinical outcome data from an epidemiologic study in approximately 400 STEC-HUS patients who received only best supportive care during the 2011 German epidemic.

Ultra-Rare Disease Programs with Highly Innovative Therapeutics Beyond Eculizumab

• Asfotase Alfa: Alexion completed enrollment in a retrospective natural history study in infants with hypophosphatasia (HPP), an ultra-rare, inherited and life-threatening metabolic disease.
• cPMP Replacement Therapy: Alexion is developing a cPMP replacement therapy for the treatment of patients with Molybdenum Cofactor Deficiency Type A (MoCD), a severe, ultra-rare and genetic metabolic disorder that is fatal in newborns. Alexion has commenced a retrospective cPMP study in MoCD patients and a study with the Company’s synthetic cPMP is planned.
• ALXN1102/1103: Enrollment continues in a Phase I study to characterize the mechanism of action and develop initial safety data for ALXN1102 and ALXN1103, intravenous and subcutaneous versions, respectively, of one of Alexion’s novel complement inhibitors.
• ALXN1007: Alexion has completed dosing in a single-dose Phase I study of ALXN1007, a novel anti-inflammatory antibody, to evaluate the safety, tolerability, pharmacokinetics and pharmacodynamics of this therapeutic candidate in healthy volunteers. The Company expects to meet with regulators to discuss a multi-dose Phase I study.

2013 Financial Guidance:

Alexion today announced that it is raising its 2013 revenue guidance from the previous range of $1.490 to $1.505 billion, now to the higher range of $1.505 to $1.520 billion. The upward revision reflects continued global growth of Soliris in PNH and growth from the ongoing launch of Soliris in aHUS. Guidance for 2013 non-GAAP earnings per share is also being raised, from the previous range of $2.82 to $2.92, now to the higher range of $2.87 to $2.97 per share. Alexion is reiterating all other items of the 2013 financial guidance provided in the Company’s press release of February 14, 2013.

Conference Call/Web Cast Information:

Alexion will host a conference call/audio web cast to discuss matters mentioned in this release. The call is scheduled for today, April 25, at 10:00 a.m., Eastern Time. To participate in this call, dial 888-312-3051 (USA) or 719-325-2168 (International), passcode 7274940, shortly before 10:00 a.m., Eastern Time. A replay of the call will be available for a limited period following the call, beginning at 1:00 PM, Eastern Time. The replay number is 888-203-1112 (USA) or 719-457-0820 (International), passcode 7274940. The audio webcast can be accessed at www.alexionpharma.com.

About Soliris:

Soliris is a first-in-class terminal complement inhibitor developed from the laboratory through regulatory approval and commercialization by Alexion. Soliris is approved in the US, European Union, Japan and other countries as the first and only treatment for patients with paroxysmal nocturnal hemoglobinuria (PNH), a debilitating, ultra-rare and life-threatening blood disorder, characterized by complement-mediated hemolysis (destruction of red blood cells). Soliris is indicated to reduce hemolysis. Soliris is also approved in the US and the European Union as the first and only treatment for patients with atypical hemolytic uremic syndrome (aHUS), a debilitating, ultra-rare and life-threatening genetic disorder characterized by complement-mediated thrombotic microangiopathy, or TMA (blood clots in small vessels). Soliris is indicated to inhibit complement-mediated TMA. The effectiveness of Soliris in aHUS is based on the effects on TMA and renal function. Prospective clinical trials in additional patients are ongoing to confirm the benefit of Soliris in patients with aHUS. Soliris is not indicated for the treatment of patients with Shiga toxin E. coli related hemolytic uremic syndrome (STEC-HUS). For the breakthrough innovation in complement inhibition, Alexion and Soliris have received the pharmaceutical industry's highest honors: the 2008 Prix Galien USA Award for Best Biotechnology Product with broad implications for future biomedical research and the 2009 Prix Galien France Award in the category of Drugs for Rare Diseases. More information including the full prescribing information on Soliris is available at www.soliris.net.

About Alexion:

Alexion Pharmaceuticals, Inc. is a biopharmaceutical company focused on serving patients with severe and ultra-rare disorders through the innovation, development and commercialization of life-transforming therapeutic products. Alexion is the global leader in complement inhibition and has developed and markets Soliris® (eculizumab) as a treatment for patients with PNH and aHUS, two debilitating, ultra-rare and life-threatening disorders caused by chronic uncontrolled complement activation. Soliris is currently approved in more than 40 countries for the treatment of PNH, and in the United States and European Union for the treatment of aHUS. Alexion is evaluating other potential indications for Soliris and is developing four other highly innovative biotechnology product candidates, which are being investigated across nine severe and ultra-rare disorders beyond PNH and aHUS. This press release and further information about Alexion Pharmaceuticals, Inc. can be found at: www.alexionpharma.com.

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This news release contains forward-looking statements, including statements related to guidance regarding anticipated financial results for 2013, assessment of the Company's financial position and commercialization efforts, medical benefits and commercial potential for Soliris for PNH and aHUS and other potential indications, expansion of clinical and commercial operations to additional countries, medical and commercial potential of Alexion's complement-inhibition technology and other technologies, plans for clinical programs for each of our product candidates and progress in developing commercial infrastructure. Forward-looking statements are subject to factors that may cause Alexion's results and plans to differ from those expected, including for example, decisions of regulatory authorities regarding marketing approval or material limitations on the marketing of Soliris for PNH and aHUS and other potential indications, delays in arranging satisfactory manufacturing capabilities and establishing commercial infrastructure, failure to satisfactorily address the issues raised by the FDA in the Warning Letter recently disclosed by Alexion, the possibility that results of clinical trials are not predictive of safety and efficacy results of Soliris in broader patient populations in the disease studied or other diseases, the risk that acquisitions will not result in short-term or long-term benefits, the possibility that current results of commercialization are not predictive of future rates of adoption of Soliris in PNH, aHUS or other diseases, the risk that third parties will not agree to license any necessary intellectual property to Alexion on reasonable terms or at all, the risk that third party payors (including governmental agencies) will not reimburse or continue to reimburse for the use of Soliris at acceptable rates or at all, the risk that estimates regarding the number of patients with PNH, aHUS or other disorders are inaccurate, and a variety of other risks set forth from time to time in Alexion's filings with the US Securities and Exchange Commission, including but not limited to the risks discussed in Alexion's Annual Report on Form 10-K for the period ended December 31, 2012 and in our other filings with the US Securities and Exchange Commission. Alexion does not intend to update any of these forward-looking statements to reflect events or circumstances after the date hereof, except when a duty arises under law.

In addition to financial information prepared in accordance with GAAP, this news release also contains non-GAAP financial measures that Alexion believes, when considered together with the GAAP information, provide investors and management with supplemental information relating to performance, trends and prospects that promote a more complete understanding of our operating results and financial position during different periods. The non-GAAP results exclude the impact of the following GAAP items: the impact of share-based compensation expense, acquisition-related costs, taxes related to acquisition structuring, intangible asset impairments, upfront and milestone payments related to licensing and collaboration agreements, and non-cash taxes.These non-GAAP financial measures are not intended to be considered in isolation or as a substitute for, or superior to, the financial measures prepared and presented in accordance with GAAP and should be reviewed in conjunction with the relevant GAAP financial measures. Please refer to the attached Reconciliation of GAAP to Non-GAAP Net Income for explanations of the amounts adjusted to arrive at non-GAAP net income and non-GAAP earnings per share amounts for the three month periods ended March 31, 2013 and 2012.