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Several squamous cell carcinomas of cervix and isolated cases of gliomas showed moderate to strong nuclear positivity. Weak to moderate staining was observed in several cases of thyroid, testicular and urothelial cancers. Remaining tumor tissues were negative.
Most tumors showed weak to moderate cytoplasmic positivity. Prostate cancers showed moderate to strong staining.
GENE INFORMATION
Gene name
CCNI (HGNC Symbol)
Synonyms
CCNI1
Description
Cyclin I (HGNC Symbol)
Entrez gene summary
The protein encoded by this gene belongs to the highly conserved cyclin family, whose members are characterized by a dramatic periodicity in protein abundance through the cell cycle. Cyclins function as regulators of CDK kinases. Different cyclins exhibit distinct expression and degradation patterns which contribute to the temporal coordination of each mitotic event. This cyclin shows the highest similarity with cyclin G. The transcript of this gene was found to be expressed constantly during cell cycle progression. The function of this cyclin has not yet been determined. [provided by RefSeq, Jul 2008]