Our results indicate that a major region of LOH in cervical cancer exists within a 3.6-Mb stretch of DNA on 11q23.3-q24.1 and that somatic mutations in RNF26, USP2, TRIM29, POU2F3, or PPP2R1B probably are not important for cervical carcinogenesis.
Recent studies have revealed that genetic alterations of the protein phosphatase genes, including PTEN, PPP2R1A, PPP2R1B and PPP1R3, are involved in human carcinogenesis.
It was recently shown that the gene encoding for the beta isoform of its subunit A, PPP2R1B, is altered in human lung and colorectal carcinomas, suggesting a role in human tumorigenesis.