INS and rheumatoid arthritis: She was being treated for rheumatoid arthritis (oral prednisolone, 5 mg/day, and had poor glycemic control specified by a glycated hemoglobin (HbA1c) level of 7.8% while on a regimen of 50% insulin lispro protamine suspension and 50% insulin lispro injection (HUMALOG® Mix50/50TM; Lilly USA, LLC, 2013) at 6 U in the morning and 4 U in the evening, as well as miglitol (10 mg/day) and mitiglinide (450 mg/day).