What to Expect With Gilead Sciences Inc.'s Q1 Earnings Results

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Gilead Sciences' (NASDAQ: GILD) last quarterly earnings update in February sounded kind of like a broken record. The news in the fourth quarter of 2017 was very similar to Gilead's results for earlier quarters in the year.

The big biotech will provide an update on its first-quarter performance on Tuesday, May 1, 2018. Will there be more of the same old story or some new twists? Here's what you can expect with Gilead's Q1 earnings results.

Scientist wearing safety glasses and mask with hand holding beaker in front of him overlaid on images of chemical structures and periodic table
Scientist wearing safety glasses and mask with hand holding beaker in front of him overlaid on images of chemical structures and periodic table

Image source: Getty Images.

1. A nice jump in HIV sales

The primary bright spot for Gilead in 2017 was its HIV franchise. Gilead claimed seven blockbuster HIV drugs, with one not far away from the $1 billion sales level. While first-quarter sales for the company's older HIV drugs like Truvada and Atripla will probably continue to drop, Gilead's newer TAF-based drugs should more than offset those declines.

Expect Genvoya to remain the No. 1 seller in Gilead's lineup. However, Genvoya's reign probably won't last very much longer. The Food and Drug Administration (FDA) approved Biktarvy in February. Market research firm EvaluatePharma projects that Biktarvy will be the biggest new drug launched in 2018. Although Gilead won't have a full quarter's worth of sales for the new drug in its Q1 update, Biktarvy likely got off to a great start.

Meanwhile, the growth for Genvoya, Descovy, and Odefsey should keep going for a while. Overall, my view is that Gilead's HIV franchise will enjoy a meaningful jump in year-over-year sales on the continued strength of these three TAF-based drugs plus the introduction of Biktarvy.

2. A slowing rate of decline in HCV sales

Gilead's hepatitis C virus (HCV) franchise has been like a dark cloud looming over the biotech. The company's CEO, John Milligan, said in the Q4 earnings conference call in February that as Gilead enters 2018, "the market dynamics of HCV are stabilizing." Will we see that stabilization in the first quarter? Probably not. But there could be a hint that it's on the way.

There are two components to Gilead's HCV sales: the number of new patient starts and Gilead's market share. The bad news is that the number of new patient starts almost certainly will continue to fall in the first quarter. More bad news is that Gilead is likely to continue losing some market share to AbbVie's Mavyret in Q1.

However, the good news is that the rate of the decline in the number of new patient starts is slowing. I suspect that could make a bigger impact on Gilead in the first quarter than lost market share to AbbVie.