New study from Lund University:

"Conclusions
Our study is the first in vitro study on the effect of COVID-19 mRNA vaccine BNT162b2 on human liver cell line. We present evidence on fast entry of BNT162b2 into the cells and subsequent intracellular reverse transcription of BNT162b2 mRNA into DNA."

https://www.mdpi.com/1467-3045/44/3/73/htm