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What: Shares of Amarin Corp. (NASDAQ:AMRN) are up by over 4% a little past the midway point through 2016, according to data from S&P Global Market Intelligence. Before last Friday's Brexit sell-off, Amarin' shares were up by double-digits for the year, fueled by the drugmaker's increasing sales of its highly refined fish oil pill, Vascepa, aimed at patients with severely high triglyceride levels. 

AMRN Chart

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So what: This tiny biopharma's stock has pushed higher in 2016 even despite the widespread downturn among biopharma and biotech stocks in general. The iShares Nasdaq Biotechnology ETF, for instance, has now shed over a quarter of its value this year over concerns that drug pricing schemes within the U.S. are about to undergo a major overhaul, presumably leading to lower profit margins for this high-flying industry. 

Now what: Amarin is nearing a pivotal interim data readout for its large cardiovascular outcomes study for Vascepa known as REDUCE-IT. According to management, this interim look at the data should occur in either September or October of this year. As the company has stated at various investor conferences -- and I happen to agree with its assessment -- this study could basically be a game-changer in terms of Amarin's core value proposition moving forward. In short, if Vascepa is able to show a statistically significant reduction in heart attacks and strokes in this trial, the drug could become an integral part of the standard of care for patients with cardiovascular disease. Of course, clinical-trial results are more often negative than positive, meaning that investors may want to wait until this interim data readout is in the books before buying shares.

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