That is not quite correct @DTshares. Whilst the statement "the patient needs a health Tcell count/immune system" may have been a red flag for you, anyone paying attention would know the immune system is involved in the CF33 methods of action and therefore would expect a healthy immune system would produce better efficacy.
As one example, here's a slide from the Imugene Investor Presentation from November 2023. I have highlighted the specific dot points about immune response.
If you want to know more about the expected increase of CD8+ T cells, have a read in this article:
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