I know I mentioned this on a previous thread, but it is wrong to draw conclusions about how a patient will react to a treatment when you only have results from 10 patients - that would be the case if it was the same disease, but this is a different one (different mutation, different organs affected).
In my smallest ever study - a feasibility study to see if it was worth going on to apply for money for a bigger one - we had results from 50 patients. That was the smallest number we could get away with recruiting that would give our results statistical significance.
At a very simplistic level -
In this study one patient in 10 came off the ventilator so 10% success rate is being quoted.
For that 10% to be a significant result you would need 500-1000 patients recruited and then you would have 50-1000 patients coming off the ventilator.
Outcome is also an issue. In research we have a primary outcome (e.g. In this study it seems that was patients needing LESS time on a ventilator). There are also always secondary outcomes such as eg improvement in reflexes, increased responsiveness.
So you could be in a position where your patient is the lucky one who can spend less time on the ventilator. But that doesn't mean your patient is responsive or that their reflexes have improved - because you are only reporting the primary outcome.
Finally, before I shut up (promise) there is an issue around sustainability of the improvement seen in the patient. As this seems to be a fairly recent set of reports, I would hazard a guess that there has not yet been a long period of follow up. These are changes that you need to be sustainable throughout the lifespan of the patient - it is entirely possible that a new medication can bring a sudden and dramatic improvement, but it can't be sustained, or may lead to added unforeseen complications.
For people interested in this (and I admit it is a fascinating area) look up adverse events and suspected, unexpected serious adverse reactions (SUSAR). Everyone at GOSH will know these because they will all be GCP trained and they will all know about Northwick Park.