# CDC73

Source: https://onco.cc/targets/cdc73/  
OnCo record `cdc73` (Target). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

CDC73 (Parafibromin) is a gene that drives cell growth when it is altered. The public catalogues list it as an oncogene driver, and it is called a cancer driver by mutation analysis of patient cohorts. Tied to Breast cancer, Endometrial cancer, Colorectal cancer and 1 more.

## Summary

Tumour suppressor probably involved in transcriptional and post-transcriptional control pathways. May be involved in cell cycle progression through the regulation of cyclin D1/PRAD1 expression. Component of the PAF1 complex (PAF1C) which has multiple functions during transcription by RNA polymerase II and is implicated in regulation of development and maintenance of embryonic stem cell pluripotency.

Open Targets scores its association with cancer at 0.85 (direct and indirect evidence; datatypes genetic literature 0.86, literature 0.93, genetic association 0.76, somatic mutation 0.89, animal model 0.50). IntOGen calls it a driver in 1 cohort (1 activating, 0 loss-of-function), covering Endometrial Carcinoma.

## Fields

- Kind: Target
- Last checked: 2026-09-23
- Also known as: cell division cycle 73; Parafibromin; parafibromin; C1orf28; HRPT2; HRPT1
- Tags: cancer-genes-wave
- Symbol: CDC73
- Class: oncogene
- Biology: Tumour suppressor probably involved in transcriptional and post-transcriptional control pathways. May be involved in cell cycle progression through the regulation of cyclin D1/PRAD1 expression. Component of the PAF1 complex (PAF1C) which has multiple functions during transcription by RNA polymerase II and is implicated in regulation of development and maintenance of embryonic stem cell pluripotency. PAF1C associates with RNA polymerase II through interaction with POLR2A CTD non-phosphorylated and 'Ser-2'- and 'Ser-5'-phosphorylated forms and is involved in transcriptional elongation, acting both independently and synergistically with TCEA1 and in cooperation with the DSIF complex and HTATSF1. PAF1C is required for transcription of Hox and Wnt target genes. PAF1C is involved in haematopoiesis and stimulates transcriptional activity of KMT2A/MLL1; it promotes leukemogenesis through association with KMT2A/MLL1-rearranged oncoproteins, such as KMT2A/MLL1-MLLT3/AF9 and KMT2A/MLL1-MLLT1/ENL. Location: Nucleus (UniProt). Locus 1q31.2 (HGNC).
- Where found: Breast cancer: Open Targets association 0.65 with breast cancer (MONDO_0007254); Endometrial cancer: IntOGen driver in 1 cohort (UCEC); Colorectal cancer: Open Targets association 0.52 with colorectal cancer (MONDO_0005575); Lung cancer: Open Targets association 0.51 with lung cancer (MONDO_0008903)

## Notes

- Written by scripts/fetch-cancer-genes.ts from CIViC, Open Targets, IntOGen, HGNC and UniProt; the function text is UniProt's, condensed and in UK spelling. Roles: IntOGen calls it an activating (Act) driver in 1 cohort. Evidence tier "cohort-driver" is the strongest of those signals.
- Prevalence not recorded: none of the sources gives a positivity rate.

## Sources

- HGNC HGNC:16783: https://www.genenames.org/data/gene-symbol-report/#!/hgnc_id/HGNC:16783
- UniProt Q6P1J9: https://www.uniprot.org/uniprotkb/Q6P1J9/entry
- NCBI Gene 79577: https://www.ncbi.nlm.nih.gov/gene/79577
- Ensembl ENSG00000134371: https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000134371

## Connected records

- collections: [IntOGen](https://onco.cc/collections/intogen/), [Open Targets Platform](https://onco.cc/collections/open-targets/)
- cancers: [Breast cancer (all types)](https://onco.cc/cancers/breast-cancer/), [Colorectal cancer](https://onco.cc/cancers/colorectal/), [Endometrial cancer](https://onco.cc/cancers/endometrial/), [Lung cancer (all types)](https://onco.cc/cancers/lung-cancer/)

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JSON: https://onco.cc/api/v1/entities/cdc73.json