The drug is an A3 adenosine receptor agonist and sounds like the high dose induced desensitization of the receptor. I have no biological explanation to the too quick placebo response after crossover.
I know you cannot read Hebrew but you can see 'JP Morgan' in the 7th line in their PR here:
I suppose they will set meetings with potential investors there, so nothing you can listen to. Come over if you wanna have a sunny week plus a meeting with the company :-)