Association of complement components with risk of colorectal cancer: A systematic review and meta-analysis

Figure 1 Flowchart of study selection process.

Figure 2 Forest plots of meta-analyses of studies comparing colorectal cancer samples with non-cancer samples for positive expression for complement component proteins detected by immunohistochemistry. A: Cluster of differentiation 46; B: Cluster of differentiation 55; C: Cluster of differentiation 59; D: Complement component 3. CI: Confidence interval.

Figure 3 Forest plot of meta-analyses of studies comparing colorectal cancer samples with non-cancer samples for positive expression for serum complement component 1. CI: Confidence interval.

Figure 4 Funnel plots on outcomes of the complement components. A: Cluster of differentiation 46; B: Cluster of differentiation 55; C: Cluster of differentiation 59; D: Complement component 3. CD: Cluster of differentiation; C3: Complement component 3.