Differential effects of 1,25-dihydroxyvitamin D₃ on oral squamous cell carcinomas in vitro.

Objective: The inverse association between vitamin D and cancer risk is well-established, but the relationship with oral cancer is less well-understood. To further the understanding of these relationships, this study sought to evaluate any growth-inhibiting effects of vitamin D on well-characterized oral cancers.

Methods: This study utilized 1,25-dihydroxy Vitamin D3 to evaluate any changes in growth using CAL27, SCC15, and SCC25 oral cancer cell lines at physiological and supraphysiological concentrations.