DAPK1 and oral cavity squamous cell carcinoma: This study focuses on the investigation of the presence of the DAPK-1 using immunohistochemistry in OLP compared to oral squamous cell carcinoma (OSCC), oral leukoplakia (OL), a well-established oral potentially malignant disorder, and normal oral epithelium to evaluate its possible role as an early predictor of the possibility of malignant transformation risk of OLP lesions.