FSTL1 and skin basal cell carcinoma: Overexpression of FSTL1 (fold change = 1.92; false discovery rate [FDR]-adjusted P-value = 0.0002) and DACT1 (fold change = 1.91; FDR-adjusted P-value = 0.007) in vismodegib-resistant BCC persisted (Fig 6D; violin plots).