He was in Greece for a Biotechnology meeting.
During an interview hosted by newspaper Kathimerini, being asked:
"Do you think the development of cancer vaccines is possible?", he responded:
"Many ambitious efforts are underway these days, thanks to the rapid development of mRNA technology, which we owe to the vaccines for COVID. I hope that data from clinical studies will be released soon to give us a clear picture, but cancer is a very insidious disease. Not sure if they will work, we'll see".