Yassin received his medical degree from Tel Aviv's Sackler Faculty of Medicine. In the department of pathology at Sackler Medical School, he earned a Ph.D. At the time of his Ph.D., he was a trainee in John Dick's lab at Princess Margaret cancer center, Toronto, and he also trained at SickKids and Toronto general hospitals. Yassin is the author of many publications in highly regarded peer-reviewed journals. In recognition of his articles, his affiliated lab won the leukemia research foundation grant. His article was among the top-rated in Nature Leukemia in 2019.