How do I create a recessively coding mRNA vaccine (next generation female offspring)?

No.13334328 ViewReplyOriginalReport
Is this even possible? Let's say I wanted to code for CYP19A1 or CDKN1B in Line-1 as a recessive gene? Asking for friend.

https://www.genecards.org/cgi-bin/carddisp.pl?gene=CYP19A1

https://www.genecards.org/cgi-bin/carddisp.pl?gene=CDKN1B