BOSTON (AP) _ Alexion Pharmaceuticals Inc. (ALXN) on Friday reported first-quarter net income of $636 million.

On a per-share basis, the Boston-based company said it had profit of $2.86. Earnings, adjusted for one-time gains and costs, came to $3.52 per share.

The results surpassed Wall Street expectations. The average estimate of six analysts surveyed by Zacks Investment Research was for earnings of $3.08 per share.

The drugmaker posted revenue of $1.64 billion in the period, also beating Street forecasts. Six analysts surveyed by Zacks expected $1.57 billion.

Alexion shares have risen 9% since the beginning of the year, while the S&P's 500 index has climbed 11%. The stock has climbed 57% in the last 12 months.

This story was generated by Automated Insights (http://automatedinsights.com/ap) using data from Zacks Investment Research. Access a Zacks stock report on ALXN at https://www.zacks.com/ap/ALXN

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