MTOR and systemic sclerosis: Immunosuppressive agents preferred in SSc are cyclosporine, corticosteroids, anti‐lymphocyte serum, anti‐interleukin 2 receptor, tacrolimus, mycophenolate mofetil, calcineurin inhibitors (CNIs), belatacept or mammalian target of rapamycin (mTOR) inhibitors, each drug has its own side effects exceptionally in SSc because of the severity of the disease itself.