Robuta

https://pubmed.ncbi.nlm.nih.gov/16168082/
Taken together, our results provide evidence that, in mammals, synonymous sites do not evolve neutrally, at least in part owing to selection on mRNA stability....
synonymous mutationsevidenceselectionaffectingstability
https://www.ncbi.nlm.nih.gov/gene/9665
mrna stabilityhomo sapiensmeiosisregulatorfactor