Intracellular reverse Transcription of Pfizer vaccine in vitro in human liver cell line
… a recent study showed that SARS-CoV-2 RNA can be reverse-transcribed and integrated into the genome of human cells
… we investigated the effect … on the human liver cell line Huh7 in vitro
… Our results indicate a fast up-take of BNT162b2 into human liver cell line
… We also show that BNT162b2 mRNA is reverse transcribed intracellularly into DNA in as fast as 6 h
… In the BNT162b2 toxicity report, no genotoxicity nor carcinogenicity studies have been provided
… Further studies are needed to demonstrate the effect of BNT162b2 on genomic integrity
… including whole genome sequencing of cells exposed to BNT162b2
… as well as tissues from human subjects who received BNT162b2 vaccination
… The Pfizer EMA assessment report also showed that BNT162b2 distributes in the spleen
… adrenal glands … in the ovaries and testes
… no data on placental transfer of BNT162b2 is available from Pfizer EMA assessment report
… It is therefore important to investigate further the effect of BNT162b2 on other cell types and tissues both in vitro and in vivo