I talked to an audiologist about FX-322 phase 1 results and she said the word score results were "completely unheard of" and "remarkable." I think you are really downplaying what they were able to achieve with a single shot of their phase 1 dosing (which is less than phase 2 per shot).
I work in a noisy place where I have to understand sounds that totally overlap or partially overlap, so basically this is like a daily speech in noise test. I have also been submitted to speech in noise tests at several different ENTs. The performance can vary from one day to another for no reason we know. It is just like some days your ears interpret sound better depending on many things, like how you slept, if you are a morning person and the test is in the morning, and many small variables. Sometimes one hears loud but not very clear and suddenly words sound clearer, this just happens for no reason.
Sometimes the input of sound through our ears is exactly the same one day and the next, but what our hearing system do with the input in terms of speech recognition is different and I haven't read why anywhere, so it would be interesting to know the rationale for this. Maybe synapses? Better conduction through the hearing nerve, for some reason? Even cramps in neck area, or areas connected to the ear? I honestly don't know...
I know there are people who are pretty new to hearing problems, but I have been reading about the possibility of hearing loss being reversed and the miracle hearing pill or injection for like 15 years, so sorry I'm skeptical
Also I believe 5dB is within the error margin, not 10 dB, but sure ET issues could cause a difference but it would be improbable multiple people had that and it only affected 8 kHz.
Sorry, but that's not improbable, it is just the most common thing, and can tell you first hand after 10 years of hearing tests. It happens all the time with audiometric tests, even the ones performed with the same audiometer. There are usually slight differences in hearing performance, and 10 dB is a very small difference, particularly in a high frequency.
Honestly I am hoping for a cure for hearing loss as much as anyone, but in those slides I didn't find much valuable information. The slides are very vague, and the tests and results are derived from a very small sample of people.