ALT: alanine aminotransferase; ALP: alkaline phosphatase, AST: aspartate aminotransferase, BMI: body mass index, GGT: gamma-glutamyl transferase, GERD: gastroesophageal reflux disease, INR: international normalized ratio, NAFLD: non-alcoholic fatty liver disease, NSAIDs: non-steroidal anti-inflammatory drugs, PT: prothrombin time, PTT: partial thromboplastin time, PPI: proton pump inhibitor, WBC: white blood count. This evidence concerns the gene GPT and gastroesophageal reflux disease.