Fig 2. Forest plot of the NRF2 expression level and clinicopathological features.
A. Forest plot of studies evaluating the relationship between NRF2 expression and distant pathological metastasis. B. Forest plot of studies evaluating the relationship between NRF2 expression and lymph node metastasis. C. Forest plot of studies evaluating the relationship between NRF2 expression and pathological tumour-node-metastasis (TNM, III~IV vs. I~II). D. Forest plot of studies evaluating the relationship between NRF2 expression and pathological tumour-node-metastasis (TNM, IV vs. III).