However, as the complexity of clinical research increases, and as targeting becomes more precise, it leads to fewer patient enrollments. Cancer center uses AI to accelerate recruitmentA National Cancer Institute-designated cancer center was recruiting patients to a small cell lung cancer trial. Small cell lung cancer accounts for 10 to 15% of all lung cancer patients, making this population harder to find. To identify eligible patients, researchers searched through standardized, structured diagnosis codes known as ICD-10 codes in their EMR system. However, the searchable codes did not distinguish between different types of lung cancer.