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Malignant cells generally showed weak staining or were negative. A few cases of gastric cancers showed moderate to strong cytoplasmic immunoreactivity. Moderate nuclear staining was observed in a few cases of malignant melanomas, skin, colorectal and pancreatic cancers.
GENE INFORMATION
Gene name
PGC
Synonyms
Description
Progastricsin (pepsinogen C) (HGNC Symbol)
Entrez gene summary
This gene encodes an aspartic proteinase that belongs to the peptidase family A1. The encoded protein is a digestive enzyme that is produced in the stomach and constitutes a major component of the gastric mucosa. This protein is also secreted into the serum. This protein is synthesized as an inactive zymogen that includes a highly basic prosegment. This enzyme is converted into its active mature form at low pH by sequential cleavage of the prosegment that is carried out by the enzyme itself. Polymorphisms in this gene are associated with susceptibility to gastric cancers. Serum levels of this enzyme are used as a biomarker for certain gastric diseases including Helicobacter pylori related gastritis. Alternate splicing results in multiple transcript variants. A pseudogene of this gene is found on chromosome 1. [provided by RefSeq, Oct 2009]