The mean TV and mean tumor weight (TW) in the CART-HER2 group were 654 ± 247 mm3 (P < 0.01) and 426 ± 138 mg (P < 0.01), respectively, while those in the NT group reached 1,769 ± 462 mm3 and 1,050 ± 306 mg, respectively, on day 32. Here, ERBB2 is linked to neoplasm.