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. 2020 Nov 26;47(2):101213. doi: 10.1016/j.diabet.2020.11.005

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Fig. 1 — Hypothetical interactions between dipeptidyl peptidase (DPP)-4 inhibition and infections such as coronavirus disease 2019 (COVID-19) in patients with type 2 diabetes: (upper) initial concerns for a possibly increased risk of infection; (lower) recent expectations that DPP-4 inhibition might improve the prognosis of patients exposed to COVID-19 through various yet-to-be-confirmed mechanisms. SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.