Among the GLP-1 cohort, patients who underwent endoscopy for abdominal pain, nausea, early satiety, or dyspepsia had no difference in gastric food retention compared to patients undergoing endoscopy for other indications (4/16; 25.0% vs. 10/57; 10.5%; p = 0.28). The gene discussed is GCG; the disease is dyspepsia.