Evidence map›Paper›PMID 37384841›Full record

ArticleThe Journal of urology2023

Free PSA and Clinically Significant and Fatal Prostate Cancer in the PLCO Screening Trial.

Kendrick Yim, Chaoran Ma, Sigrid Carlsson, Hans Lilja, Lorelei Mucci, Kathryn Penney, Adam S Kibel, Scott Eggener, Mark A Preston

Open access · greenAbstract read
In one paragraph

Article in The Journal of urology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
5.2field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Overdiagnosis and Overtreatment in Prostate Cancer.Diseases (Basel, Switzerland) · 2025
    Review
  9. Article
  10. Article
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  12. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 2 countries.

Kendrick YimDivision of Urology, Brigham and Women's Hospital, Boston, Massachusetts.ORCID 0000-0002-4111-0279
Chaoran MaChanning Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
Sigrid CarlssonDepartments of Surgery (Urology Service) and Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York.
Hans LiljaDepartment of Pathology and Laboratory Medicine, Surgery, and Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.
Lorelei MucciDepartment of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts.
Kathryn PenneyChanning Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
Adam S KibelDivision of Urology, Brigham and Women's Hospital, Boston, Massachusetts.
Scott EggenerDepartment of Urology, University of Chicago, Chicago, Illinois.
Mark A PrestonDivision of Urology, Brigham and Women's Hospital, Boston, Massachusetts.
Brigham and Women's Hospital · USMemorial Sloan Kettering Cancer Center · USHarvard University · USUniversity of Chicago · US

Funding

X-RAY CRYSTALLOGRAPHYP30CA008748 · NCI · SLOAN-KETTERING INSTITUTE FOR CANCER RES · PI Nicholas D Socci · 1985 to 2026
$347.4M
Modeling to Improve Prostate Cancer Outcomes Across Diverse PopulationsU01CA199338 · NCI · FRED HUTCHINSON CANCER RESEARCH CENTER · PI DE KONING, HARRY J, ETZIONI, RUTH D · 2015 to 2019
$5.2M
Genetic Predictors of Prostate Cancer SurvivalR01CA244948 · NCI · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI ROBERT J. KLEIN · 2021 to 2026
$4.1M
NCI NIH HHS P30 CA008748NCI NIH HHS R01 CA244948NCI NIH HHS U01 CA199338
6 · The paper itself

Abstract

purposeWe studied whether adding percent free PSA to total PSA improves prediction of clinically significant prostate cancer and fatal prostate cancer. MATERIALS AND

methodsA total of 6,727 men within the intervention arm of PLCO (Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial) had baseline percent free PSA. Of this cohort, 475 had clinically significant prostate cancer and 98 had fatal prostate cancer. Cumulative incidence and Cox analyses were conducted to evaluate the association between percent free PSA/PSA and clinically significant prostate cancer/fatal prostate cancer. Harrell's C index evaluated predictive ability. Kaplan-Meier analysis assessed survival.

resultsMedian follow-up was 19.7 years, median baseline PSA was 1.19 ng/mL, median percent free PSA was 18%. Cumulative incidence of fatal prostate cancer for men with baseline PSA ≥2 ng/mL and percent free PSA ≤10 was 3.2% and 6.1% at 15 and 25 years, respectively, compared to 0.03% and 1.1% for men with percent free PSA >25%. In younger men (55-64 years) with baseline PSA 2-10 ng/mL, C index improved from 0.56 to 0.60 for clinically significant prostate cancer and from 0.53 to 0.64 for fatal prostate cancer with addition of percent free PSA. In older men (65-74 years), C index improved for clinically significant prostate cancer from 0.60 to 0.66, with no improvement in fatal prostate cancer. Adjusting for age, digital rectal exam, family history of prostate cancer, and total PSA, percent free PSA was associated with clinically significant prostate cancer (HR 1.05,

conclusionsIn a large U.S. screening trial, the addition of percent free PSA to total PSA in men with baseline PSA ≥2 ng/mL improved prediction of clinically significant prostate cancer and fatal prostate cancer. Free PSA should be used to risk-stratify screening and decrease unnecessary prostate biopsies.

Indexed as

Prostate-Specific AntigenProstatic NeoplasmsAgedEarly Detection of CancerHumansMaleMass ScreeningProstateProstate-Specific Antigenbiomarkersprostate-specific antigenprostatic neoplasms

Identifiers

PMID37384841
PMCPMC10894656
OpenAlexW4382516662

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.