re:"I think the examples could be hypothetical or real..."
If the examples were purely hypothetical, one would expect the wording to be more general, such as, "an appropriate dose between such and such" and "show improvement" instead of the exact dosage, timeline and symptom incidences given. This suggests that it was probably tried out on a couple of confidential volunteers at the time, but this was "unofficial". The patent only requires illustrative example of use, so although it seems to originate in a vivid reporting of events, it's conceivable that the text of an internal report was editted down to be presented as "hypothetical" (wink,wink).
Although management of large corporations apparently have no qualms about dissipating cash on frivilous or even ridiculous patents, one by IBM for adding a second fan to a computer enclosure comes to mind (duh), it's plausable that judicious use of limited resources in this case, would entail doing whatever possible to see if the compound was going to work before proceeding.
In any event, one gets a sense of high confidence level for success from the wording.