Piper Jaffray analyst Edward Tenthoff noted that Regeneron (REGN) is guiding for 20% EYLEA growth in 2016 and that the launch of its Praluent cholesterol drug with partner Sanofi (SNY) has been even slower than expected. Tenthoff keeps a Neutral rating on Regeneron shares and lowered his price target on the stock to $443 from $607 following the company's earnings report and guidance.
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