ZNF146 (OZF) overexpression in tumours may alter the balance between hRap1 and other telomeric proteins; therefore OZF function may be linked to telomere regulation. ZNF146 is strongly overexpressed in many pancreas and colorectal cancers. Increased gene copy numbers are detected in 3 of 12 tumor cell lines and 2 of 12 primary pancreatic carcinomas. ZNF146 is overexpresseed in 80% of colorectal cancers.