FSTL1 and nasopharyngeal carcinoma: All the DNAs from the NPC and normal biopsy samples from Morocco were screened using MSP for 12 markers (including the markers used in the MMSP assay published previously [48] comprising EBNA1, LMP1, RASSF1A, and DAPK but also 8 new markers including ITGA9, P16, WNT7A, CHFR, CYB5R2, WIF1, RIZ1, FSTL1).