I'm not sure I understand the question, as that's the point of the article. Clinical trials are currently testing mRNA to produce proteins to treat cystic fibro

I'm not sure I understand the question, as that's the point of the article. Clinical trials are currently testing mRNA to produce proteins to treat cystic fibrosis, heart failure and various obscure conditions. There are various problems, such as ensuring the the protein is created in the right cells, requiring repeated doses so the protein is created over a long time, handling side effects, and increasing the amount of protein created. So mRNA isn't an easy solution.