here is hope and having positive thoughts is one of the most important things. Here are a few links for you to investigate. There is research going on about stem cell treatment for pancreatic cancer. Improving chances of treatment success of stem cell therapy - (https://www.pancreaticcancer.org.uk/research/about-our-research/our-research-projects/improving-chances-of-treatment-success/stem-cell-therapy/)
and Stem cell research ( https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5342743/)
Also worth looking at are The Truth about Cancer and Truly Heal on natural ways to help the body to heal itself including cancer.
Sorry it looks a muddle but these websites are definitely worth looking at. I have come across them because I am a Functional Medicine coach.
I hope your friend feels he can try something new since orthodox medicine has virtually nothing to offer. Cutting out sugar and eating only a small amount of low sugar fruit will start the journey and is most important. If I can help further please feel free to ask.
I wish him good luck.
Anne Murray