SLC4A7 and triple-negative breast carcinoma: Based on metastatic triple-negative breast cancer cells, we show that antibodies against NBCn1 inhibit colony formation and cell expansion (Fig. 6c, d), cause G2/M-phase cell cycle accumulation (Fig. 6f), and increase apoptosis (Fig. 6h) at low pHo, whereas they show no or opposite effects at physiological pHo (Fig. 6a, b, e, g).