They found that both low and high gene expression of certain genes was associated with severe disease. Basically by using drugs to either supress or promote the proteins these genes code for or perhaps stimulating or supressing the gene expression itself might help in treatment. I shouldn’t hold my breath though, they would still have to identify any suitable drugs and trial them.

Glossary :D: Gene expression is the process by which information from a gene is used in the synthesis of a functional gene product.