Han X et al. reported that an effective nomogram including the chromogranin A level, liver metastases tumor burden, and Ki-67, predicted overall survival in well-moderate NF-PNETs with liver metastases, and the nomogram showed fitting calibration with a C-index of 0.87 (95% confidence interval, 0.82–0.92)33. The gene discussed is CHGA; the disease is neoplasm.