PTGDR and esophageal squamous cell carcinoma: LncRNA lysyl oxidase homolog 1 antisense RNA 1 (LOXL1‐AS1) expression was notably increased in ESCC tissues relative to adjacent normal tissues, and LOXL1‐AS1 depletion markedly weakened the proliferative, migratory, and invasive abilities of ESCC cells and hindered ESCC cell cycle progression [10].