PCA3

Last updated
PCA3
Identifiers
Aliases PCA3 , DD3, NCRNA00019, PCAT3, prostate cancer associated 3 (non-protein coding), prostate cancer associated 3, PRUNE2-AS1
External IDs OMIM: 604845; GeneCards: PCA3; OMA:PCA3 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

n/a

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RefSeq (protein)

n/a

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Location (UCSC) Chr 9: 76.69 – 76.86 Mb n/a
PubMed search [2] n/a
Wikidata
View/Edit Human

Prostate cancer antigen 3 (PCA3, also referred to as DD3) is a gene that expresses a non-coding RNA. PCA3 is only expressed in human prostate tissue, and the gene is highly overexpressed in prostate cancer. [3] [4] Because of its restricted expression profile, the PCA3 RNA is useful as a tumor marker. [5]

Contents

Use as biomarker

The most frequently used biomarker for prostate cancer today is the serum level of prostate-specific antigen (PSA), or derived measurements. However, since PSA is prostate-specific but not cancer-specific, it is an imperfect biomarker. For example, PSA can increase in older men with benign prostatic hyperplasia. Several new biomarkers are being investigated to improve the diagnosis of prostate cancer. Some of these can be measured in urine samples, and it is possible that a combination of several urinary biomarkers will replace PSA in the future. [6]

Compared to serum PSA, PCA3 has a lower sensitivity but a higher specificity and a better positive and negative predictive value. [7] It is independent of prostate volume, whereas PSA is not. [8] It should be measured in the first portion of urine after prostate massage with digital rectal examination. [9]

PCA3 has been shown to be useful to predict the presence of malignancy in men undergoing repeat prostate biopsy. [9] [10] This means that it could be useful clinically for a patient for whom digital rectal examination and PSA suggest possible prostate cancer, but the first prostate biopsy returns a normal result. This occurs in approximately 60% of cases, and on repeat testing, 20-40% have an abnormal biopsy result. [11]

Other uses that are being studied for PCA3 include its correlation with adverse tumor features such as tumor volume, grading (Gleason score) or extracapsular extension. These studies have so far produced conflicting results. [12] [13] [14]

Society and culture

A commercial kit called the Progensa PCA3 test is marketed by the Californian company Gen-Probe.[ citation needed ] Gen-Probe acquired rights to the PCA3 test from Diagnocure in 2003.[ citation needed ] In April 2012, Hologic bought Gen-Probe for $3.75 billion by cash. [15]

Discovery

PCA3 was discovered to be highly expressed by prostate cancer cells in 1999. [3] [ independent source needed ]

References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000225937 Ensembl, May 2017
  2. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  3. 1 2 Bussemakers MJ, van Bokhoven A, Verhaegh GW, Smit FP, Karthaus HF, Schalken JA, Debruyne FM, Ru N, Isaacs WB (December 1999). "DD3: a new prostate-specific gene, highly overexpressed in prostate cancer". Cancer Research. 59 (23): 5975–9. PMID   10606244.
  4. Neves AF, Araújo TG, Biase WK, Meola J, Alcântara TM, Freitas DG, Goulart LR (October 2008). "Combined analysis of multiple mRNA markers by RT-PCR assay for prostate cancer diagnosis". Clinical Biochemistry. 41 (14–15): 1191–8. doi:10.1016/j.clinbiochem.2008.06.013. PMID   18640109.
  5. Loeb S (November 2008). "Does PCA3 help identify clinically significant prostate cancer?". European Urology. 54 (5): 980–1. doi:10.1016/j.eururo.2008.07.027. PMID   18684556.
  6. Laxman B, Morris DS, Yu J, Siddiqui J, Cao J, Mehra R, Lonigro RJ, Tsodikov A, Wei JT, Tomlins SA, Chinnaiyan AM (February 2008). "A first-generation multiplex biomarker analysis of urine for the early detection of prostate cancer". Cancer Research. 68 (3): 645–9. doi:10.1158/0008-5472.CAN-07-3224. PMC   2998181 . PMID   18245462.
  7. Vlaeminck-Guillem V, Ruffion A, Andre J (May 2008). "[Value of urinary PCA3 test for prostate cancer diagnosis]". Progres en Urologie (in French). 18 (5): 259–65. doi:10.1016/j.purol.2008.03.029. PMID   18538269.
  8. Deras IL, Aubin SM, Blase A, Day JR, Koo S, Partin AW, Ellis WJ, Marks LS, Fradet Y, Rittenhouse H, Groskopf J (April 2008). "PCA3: a molecular urine assay for predicting prostate biopsy outcome". The Journal of Urology. 179 (4): 1587–92. doi:10.1016/j.juro.2007.11.038. PMID   18295257.
  9. 1 2 Haese A, de la Taille A, van Poppel H, Marberger M, Stenzl A, Mulders PF, Huland H, Abbou CC, Remzi M, Tinzl M, Feyerabend S, Stillebroer AB, van Gils MP, Schalken JA (November 2008). "Clinical utility of the PCA3 urine assay in European men scheduled for repeat biopsy". European Urology. 54 (5): 1081–8. doi:10.1016/j.eururo.2008.06.071. PMID   18602209.
  10. Marks LS, Fradet Y, Deras IL, Blase A, Mathis J, Aubin SM, Cancio AT, Desaulniers M, Ellis WJ, Rittenhouse H, Groskopf J (March 2007). "PCA3 molecular urine assay for prostate cancer in men undergoing repeat biopsy". Urology. 69 (3): 532–5. doi:10.1016/j.urology.2006.12.014. PMID   17382159.
  11. de la Taille A (September 2007). "Progensa PCA3 test for prostate cancer detection". Expert Review of Molecular Diagnostics. 7 (5): 491–7. doi:10.1586/14737159.7.5.491. PMID   17892357. S2CID   11338727.
  12. Nakanishi H, Groskopf J, Fritsche HA, Bhadkamkar V, Blase A, Kumar SV, Davis JW, Troncoso P, Rittenhouse H, Babaian RJ (May 2008). "PCA3 molecular urine assay correlates with prostate cancer tumor volume: implication in selecting candidates for active surveillance". The Journal of Urology. 179 (5): 1804–9, discussion 1809–10. doi:10.1016/j.juro.2008.01.013. PMID   18353398.
  13. van Gils MP, Hessels D, Hulsbergen-van de Kaa CA, Witjes JA, Jansen CF, Mulders PF, Rittenhouse HG, Schalken JA (August 2008). "Detailed analysis of histopathological parameters in radical prostatectomy specimens and PCA3 urine test results". The Prostate. 68 (11): 1215–22. doi:10.1002/pros.20781. PMID   18500693. S2CID   38697285.
  14. Whitman EJ, Groskopf J, Ali A, Chen Y, Blase A, Furusato B, Petrovics G, Ibrahim M, Elsamanoudi S, Cullen J, Sesterhenn IA, Brassell S, Rittenhouse H, Srivastava S, McLeod DG (November 2008). "PCA3 score before radical prostatectomy predicts extracapsular extension and tumor volume". The Journal of Urology. 180 (5): 1975–8, discussion 1978–9. doi:10.1016/j.juro.2008.07.060. PMID   18801539.
  15. Soyoung Kim and Anand Basu (30 April 2012). "Hologic to buy Gen-Probe for $3.75 billion". Reuters. Retrieved April 8, 2017.

Further reading