And by a few, I mean four.
One phase 3 trial success is a good indicator that a drug will pass another and get approved. Four is rightfully boosting investors' confidence.
The clinical trials were studying a long-acting muscarinic antagonist, or LAMA, and long-acting beta2 agonist, or LABA, combination in chronic obstructive pulmonary disease, a lung disease. Theravance is studying the LAMA, umeclidinium bromide, and the LABA, vilanterol, with its longtime partner GlaxoSmithKline
Two of the trials compared the drugs with placebo for 24 weeks. In both the high-dose trial and the low-dose trial, the drug combo performed much better than placebo. The individual components by themselves also beat placebo, and the combo beat the individual components by themselves. That's exactly what you'd like to see, although there actually wasn't much to see; the company's just said the drugs worked, but it didn't provide any details beyond very low p-values that show statistical significance since they're saving the data for an upcoming medical meeting.
The companies also measured their combination to an active comparator, Pfizer
All told, the data looks really good, but investors should keep an eye out for the 52-week data due out shortly. If anything is going to trip up the program, it'll be safety data, which is more likely to show up in the longer trial. Remember, Bristol-Myers Squibb
Four isn't necessarily going to be enough.