Our findings were also consistent with current basic studies, such as the finding that the functional receptor (angiotensin‐converting enzyme 2, ACE2) of SARS‐CoV‐2 is expressed in islet cells, SARS‐CoV‐2 can use ACE2 effectively to destroy islet cells, resulting in an islet‐function damage, hyperglycemia or deterioration of blood glucose in patients with diabetes.23, 24. The gene discussed is ACE2; the disease is diabetes mellitus.