In a patient with a Factor V Leiden heterozygous mutation but no prior thrombosis, would you consider using a JAK inhibitor for the treatment of spondyloarthritis or rheumatoid arthritis if other options have been ineffective?  

1. I'd love to hear others' thoughts who are more versed in thrombotic diastheses and JAKi's.2. The only article I could find assessing this showed no differences between the JAKi arm and the tumor necrosis factor inhibitor arm regarding patients with thrombophilia mutations (Weitz, et al., PMID 363...