FOXM1 and neoplasm: Figure 7(A,B) showed that LV-si-hsa_circ_0042823 notably repressed the volume and weight of tumour tissues in mice. Subsequently, we estimated miR-877-5p and FOXM1 expression in the tumour tissues by qRT-PCR and WB. The tumour tissues in LV-si-hsa_circ_0042823 group exhibited an increase of miR-877-5p expression and a decrease in the mRNA and protein expression of FOXM1 (Figure (C,D)). Therefore, these data confirmed that hsa_circ_0042823 knockdown inhibited the tumour growth of LSCC via miR-877-5p/FOXM1 axis.