1.14.11.28 down C-P3H is downregulated in lymphoma. Down-regulation is associated with methylation in the CpG islands and is detected in almost all common types of B-cell lymphoma 727259 1.14.11.28 down C-P4H is downregulated in lymphoma. Down-regulation is associated with methylation in the CpG islands and is detected in almost all common types of B-cell lymphoma 727259 1.14.11.28 down the enzyme expression of P3H2 and P3H3 is downregulated in breast cancer by abberrant CpG methylation in the 5'-regulatory sequences of each gene, methylation of P3H3 is not associated with higher tumour grade and Nottingham prognostic index 697017 1.14.11.28 down the enzyme expression of P3H2 is downregulated in breast cancer by abberrant CpG methylation in the 5'-regulatory sequences of each gene, methylation of P3H2 is specific for breast cancer and does not occur in other cancer cell types, it is strongly associated with higher tumour grade and Nottingham prognostic index 697017