GALNT3 and neoplasm: In comparison, mice injected with the GALNT3/T6 KO cells displayed significantly smaller tumor masses when compared with both the Ctrl and GALNT3 KO groups (p = 0.0006 and p = 0.0205 respectively), with a mean residual tumor mass of 3.1 g (+/−0.5 SEM) at the endpoint (Figure 6B).