Seems to be the case.
Also, xenotropic murine leukemia virus-related virus has been looked at.
Epstein–Barr virus Genetic materials is found in some Hodgkin lymphoma cases and is thought to be in a few others. So virus and cancer is not new. The prevalence and interactions is still not full understood. So pumping people with a genetic treatment that some call a vaccine that is also contaminated with LNP containing DNA fragments & SV40 was a really dump idea - in my opinion.