Fig. 4

Forest plot for NHL risk associated with the SHMT1 C1420T polymorphism under the dominant model (CT+TT vs. CC), stratified by ethnicity. A borderline association was detected between the SHMT1 C1420T polymorphism and NHL risk under the dominant model. The boxes and horizontal lines correspond to the estimates of OR and 95% CI for each study. The diamond indicates the pooled OR and 95% CI