Question: But so far, the only serious challenge to the published work comes from an Australian mathematician named Brendan McKay, who has replicated the experiment and claims to have found defects.
Brendan McKay is a respected mathematician, so he might be right about defects in the published work.

Answer: it is not possible to tell

Question: yeah a lot of them would have to get out like in just a couple
A lot would have to get out.

Answer: yes

Question: TUMORS AND IS A TERMINAL ILLNESS.
The disease is fatal.

Answer:
yes