DDA1 and neoplasm: Up‐regulation of DDA1 accelerated tumour growth in vivo (tumour volume: Mock: 631.6 ± 131.3 mm3versus DDA1: 1080 ± 116.0 mm3, n = 5, P < 0.05; and tumour weight: Mock: 0.566 ± 0.091 g versus DDA1: 0.950 ± 0.106 g, n = 5, P < 0.05) (Fig. 2I and J).