TY - JOUR T1 - Gene of the month: Cornulin JF - Journal of Clinical Pathology JO - J Clin Pathol SP - 289 LP - 291 DO - 10.1136/jclinpath-2021-208011 VL - 75 IS - 5 AU - Rajandeep Kaur AU - Anshika Chauhan AU - Shabir Ahmad Bhat AU - Debajyoti Chatterjee AU - Sushmita Ghoshal AU - Arnab Pal Y1 - 2022/05/01 UR - http://jcp.bmj.com/content/75/5/289.abstract N2 - Cornulin (CRNN) gene encodes a 495 amino acid long protein and is located on chromosome 1q21.3. Primarily, it functions as the marker of differentiation. Initially, it was found to be specific for the squamous cells of oesophagus. However, later on, several studies have revealed the presence of Cornulin downregulation in various epithelial squamous cell carcinomas of the head and neck, oesophagus and cervix and clinically associated it with worsening of cancer and the poor prognosis. Cornulin levels also showed dysregulation in other diseases such as Eczema and Psoriasis. Besides the differentiation marker, it was identified to be involved in the stress response. The studies, in psoriasis and oesophageal squamous cell carcinoma, has elucidated that the dysregulation in the Cornulin is associated with the cell cycle events such as G1/S transition. However, the actual function of Cornulin is still yet to be explored in detail. ER -