A study based on the alteration of LSCs in patients with diabetes found that the expression of markers of LSCs such as ΔNp63α, ATP-binding cassette sub-family G member 2 (ABCG2), N-cadherin, K15, K17, K19, and β1 integrin was decreased significantly in the diabetic limbus (212). Here, ABCG2 is linked to diabetes mellitus.