Dstock,
I'm aware that the EDEN system offers a great deal of flexibility as to how it can be used. Frankly the disposable cassette is a sealed unit, a case could probably be made for only loading and unloading the cassette in a cleanroom, but operating the EDEN in a somewhat lessor space, but I don't believe they're considering doing that. I don't believe that there would be a limit set on how many EDEN units can be located in one large cleanroom, but clearly every unit would need to have security for things like power outages, etc.
Unless the optimizing of the EDEN has resulted in dramatically lowering the time required to make one batch of vaccine, each EDEN will only make about 50 batches a year. If we truly are authorized to provide batches of DCVax-L for many solid cancers the need for virtually hundreds of thousands of EDEN units are likely to be needed. I could eventually see EDEN units being contained in racks installed in environmental cabinets, all located in cleanrooms, but stacked in a manner intended to maximize the number that could be contained in a given space. I suppose if you take robotics far enough, robots could load and unload the cassettes in each unit, but I wouldn't expect that in the immediate future unless Musk acquires the company.
I don't know if anyone has any idea of how many cancer patients in the last few years have had their tumors properly preserved. I would suspect that many Drs. and patients researching technology in development would have run into DCVax-L for GBM and other cancers. The cost of cryogenic storage isn't that great. Of course some of these patients are no longer with us, but I wonder if the demand immediately after approval won't come from thousands, or more, who've had their tumors properly preserved and still have a chance with the vaccine. For those who couldn't possibly afford getting the vaccine under compassionate use in the UK, this would be an affordable alternative. Of course in the beginning, only UK citizens would gain insurance coverage for the vaccine as I understand it. Approvals would have to come from elsewhere to permit patients access to the vaccine.
Gary