Because insulin-specific antibodies are the most commonly used tool for pancreatic β-cell detection, other β-cell lineage-specific markers, such as NK6 Homeobox 1 (NKX6.1) [81], may be needed to accurately detect the distribution of SARS-CoV-2 in the pancreas and to determine the fate of β cells post virus infection. This evidence concerns the gene NKX6-1 and viral infectious disease.