TREH (Trehalase): TREH encodes the enzyme trehalase, which is involved in the hydrolysis of trehalose, a disaccharide sugar. Trehalase is important for carbohydrate metabolism, particularly in the gut where trehalose is broken down. Deficiencies in trehalase activity can lead to trehalose intolerance, characterized by gastrointestinal symptoms following trehalose ingestion....