MSX1 and cleft lip: Statistically significant correlations between factors were mostly different within the control and patient groups, with some minor overlap being present; negative correlations predominantly were identified in the control group and not the cleft lip tissue group, indicating a disturbance of factor regulation within cleft lip tissue; positive correlations in the cleft lip group mainly involved the PTX3 gene, NFκB p65, and MSX1 protein, which was not seen in the control group, again possibly due to disturbed signaling pathways in cleft lip tissue.