The Pfizer's vaccine contains the SV40 sequence which is known as a promoter of the cancer virus.
SV40 is a promoter of cancer viruses, and the presence of this sequence facilitates the translocation of DNA to the human nucleus easier to enter the genome.
Why SV40?
The plasmid DNA map submitted by Pfizer to the EMA (European Medicines Agency) does not appear to include SV40.
https://twitter.com/ShortShort_News/status/1651903903246716929
https://www.truthforhealth.org/2023/04/breaking-pfizers-jab-contains-the-sv40-sequence-which-is-known-as-a-promoter-of-the-cancer-virus/
https://www.addgene.org/browse/sequence/221990/
Emergent Human Pathogen Simian Virus 40 and Its Role in Cancer
The polyomavirus simian virus 40 (SV40) is a potent DNA tumor virus, and mounting evidence suggests that it is an emergent human pathogen.
The Institute of Medicine recently concluded that “the biological evidence is of moderate strength that SV40 exposure could lead to cancer in humans under natural conditions.”
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC452549/