MKI67 and gastric cancer: Cheng et al. (2018) found that IC, NIC, and the curve slope values were found significantly different among the low-, medium- and high-level Ki-67 expression groups in VP and delayed phase (DP), and the higher grades of Ki-67, the bigger values of these parameters. For further analysis, they found the correlation between Ki-67 grade and IC, NIC, and the curve slope values. Zhao et al. (2021) developed and evaluated a spectral-based nomogram for noninvasive identification of the status of human epidermal growth factor receptor 2 (HER2) expression in GC.