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Microarray-based Identification of Individual HERV Loci Expression: Application to Biomarker Discovery in Prostate Cancer

Microarray-based Identification of Individual HERV Loci Expression: Application to Biomarker Discovery in Prostate Cancer

Published on: November 2, 2013

Towards an optimal interval for prostate cancer screening.

Pim J van Leeuwen¹, Monique J Roobol, Ries Kranse

¹Department of Urology, Erasmus University Medical Center, Rotterdam, The Netherlands. p.vanleeuwen@erasmusmc.nl

European Urology

|August 16, 2011

Summary

A 2-year screening interval for prostate cancer (PCa) significantly reduced advanced cancer incidence but increased low-risk diagnoses. Individualized screening strategies are needed for optimal PCa management.

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Area of Science:

Urology
Oncology
Public Health

Background:

Prostate cancer (PCa) screening program effectiveness is often estimated by the rate of decrease in advanced cancers.
Determining optimal screening intervals is crucial for balancing early detection with overdiagnosis.

Purpose of the Study:

To assess the effectiveness of prostate cancer (PCa) screening programs utilizing either a 2-year or a 4-year screening interval.
To compare the incidence of advanced and low-risk PCa between different screening frequencies.

Main Methods:

A randomized controlled trial involving men aged 55-64 years at two European centers (Gothenburg, Sweden; Rotterdam, Netherlands).
Participants were allocated to either a 2-year (n=4202) or 4-year (n=13,301) screening interval.
Follow-up extended up to 12 years, with advanced cancer defined by clinical stage, PSA levels, or Gleason score.

Main Results:

The proportional advanced cancer incidence was lower in the 2-year interval group (Gothenburg) compared to the 4-year interval group (Rotterdam) (RR: 0.57; p=0.048).
Conversely, the relative risk for detection of low-risk PCa was higher in the 2-year interval group (RR: 1.46; p<0.001).
Overall proportional cancer incidence was higher with the 2-year interval (3.64) versus the 4-year interval (3.08) (RR: 1.18; p=0.009).

Conclusions:

A 2-year screening interval effectively reduces the incidence of advanced prostate cancer (PCa) in men aged 55-64.
However, a 2-year interval leads to a higher risk of diagnosing low-risk PCa compared to a 4-year interval.
Improved individualized screening algorithms are necessary to optimize PCa screening strategies and mitigate overdiagnosis.