SLIT2 and gastric cancer: In addition, the qPCR analysis estimated the expression levels of the seven genes in samples; among them, expression of ABCA8 (P < 0.001), MFAP5 (P < 0.05), SCRG1 (P < 0.05), and SLIT2 (P < 0.05) were significantly lower in the GC samples (Fig. 7a).