Shares of Spectrum Pharmaceuticals (NASDAQ:SPPI) are trading nearly 5% higher in pre-market activity after reporting better-than-anticipated third-quarter results along with increased future expectations. The company posted a 35% increase in revenues to $69 million, topping analyst estimates of $65.5 million. Spectrum also beat at the bottom line, with adjusted earnings per share of $0.42 sailing past comparable estimates of $0.35 per share.

In addition to strong quarterly results, the company offered up a double whammy of higher 2012 revenue guidance, as well as stronger cost savings projections for its recent acquisition of Allos Therapeutics. Specifically, the company now expects pro forma revenue to exceed $300 million for the full year, versus prior expectations of "around $300 million." Expected cost savings related to the Allos deal are now projected to exceed $50 million versus the $40 to $50 million the company had previously offered investors.

While today's news is encouraging for Spectrum shareholders, any potential investor has to be aware of one major issue facing the company. As my colleague Brian Orelli recently noted, Spectrum's top-seller Fusilev could see some major generic competition in the future if generic manufacturers can get their act together. A lot of uncertainty still exists, and the impact might not be as significant as feared, but it's certainly a risk any Spectrum investor has to be keep in mind.

Brenton Flynn has no positions in the stocks mentioned above. The Motley Fool has no positions in the stocks mentioned above. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.