RE: #sng #WHO1 Apr 2020 17:53
It's a long story but to summarise, it was basically a problem with the trial rather than the drug. Not enough of the asthma sufferers in the trial got the right sort of virus-based exacerbations to give a conclusive result.
By the time of the COPD trial there was a test for virus vs other. So they have a pool of COPD sufferers on standby. When one of them suffers an exacerbation they can be tested, and if it's a virus then they enter the trial. So far they have 109 out of a 120 target, but it's paused to make way for the COVID19 trial.
It's possible they'll return to asthma again, if they think there's a big enough market for asthma plus virus-based exacerbations.
(Not an expert, so happy to be corrected if any of this is wrong. DYOR)
PS I see John117 has posted similarly while I was putting this together.