Evidence map›Paper›PMID 31217167›Full record

ArticleCancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology2019

A Prospective Study of Toenail Trace Element Levels and Risk of Skin Cancer.

Natalie H Matthews, Michelle Koh, Wen-Qing Li, Tricia Li, Walter C Willett, Meir J Stampfer, David C Christiani, J Steven Morris, Abrar A Qureshi, Eunyoung Cho

Open access · bronzeAbstract read
In one paragraph

Article in Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology, 2019. 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
1.6field-weighted citation impact, top 17% 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, 25 citations in OpenAlex.

  1. Human Health Effects of Oral Exposure to Chromium: A Systematic Review of the Epidemiological Evidence.International journal of environmental research and public health · 2024
    Pooled it
  2. Article
  3. Paving the Way to Elucidate Hg's Role in Tumorigenesis.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  4. Article
  5. Article
  6. Nanoemulsions in Skin Cancer Therapy: A Promising Frontier.Current pharmaceutical biotechnology · 2025
    Review
  7. Serum Selenium Concentration as a Potential Diagnostic Marker for Early-Stage Colorectal Cancer: A Comparative Study.Medical science monitor : international medical journal of experimental and clinical research · 2024
    Article
  8. Article
  9. Scientific opinion on the tolerable upper intake level for selenium.EFSA journal. European Food Safety Authority · 2023
    Article
  10. Review
  11. Article
  12. Serum selenium level and cancer risk: a nested case-control study.Hereditary cancer in clinical practice · 2019
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 6 institutions in 1 country.

Natalie H MatthewsDepartment of Dermatology, The Warren Alpert Medical School, Brown University, Providence, Rhode Island.ORCID 0000-0002-7561-5873
Michelle KohDepartment of Dermatology, The Warren Alpert Medical School, Brown University, Providence, Rhode Island.
Wen-Qing LiDepartment of Dermatology, The Warren Alpert Medical School, Brown University, Providence, Rhode Island.
Tricia LiDepartment of Dermatology, The Warren Alpert Medical School, Brown University, Providence, Rhode Island.
Walter C WillettChanning Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.ORCID 0000-0003-1458-7597
Meir J StampferChanning Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
David C ChristianiDepartment of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts.ORCID 0000-0002-0301-0242
J Steven MorrisResearch Reactor Center, University of Missouri-Columbia and Harry S. Truman Memorial Veterans Hospital, Columbia, Missouri.
Abrar A QureshiDepartment of Dermatology, The Warren Alpert Medical School, Brown University, Providence, Rhode Island.
Eunyoung ChoDepartment of Dermatology, The Warren Alpert Medical School, Brown University, Providence, Rhode Island. eunyoung_cho@brown.edu.
Brigham and Women's Hospital · USBeth Israel Deaconess Medical Center · USBrown University · USHarry S. Truman Memorial Veterans' Hospital · USHarvard University · USRhode Island Department of Health · US

Funding

Long Term Multidisciplinary Study of Cancer in Women: The Nurses Health StudyUM1CA186107 · NCI · BRIGHAM AND WOMEN'S HOSPITAL · PI ELIASSEN, A. HEATHER, STAMPFER, MEIR · 2014 to 2023
$22.3M
Cancer Epidemiology Cohort in Male Health ProfessionalsU01CA167552 · NCI · HARVARD UNIVERSITY D/B/A HARVARD SCHOOL OF PUBLIC HEALTH · PI Lorelei Mucci, Walter C. Willett · 2017 to 2026
$17.0M
Cancer Epidemiology Cohort in Male Health ProfessionalsUM1CA167552 · NCI · HARVARD SCHOOL OF PUBLIC HEALTH · PI WILLETT, WALTER C. · 2012 to 2016
$11.5M
Psoralens and melanomaR21CA198216 · NCI · BROWN UNIVERSITY · PI CHO, EUNYOUNG · 2015 to 2016
$432k
NCI NIH HHS R21 CA198216NCI NIH HHS U01 CA167552NCI NIH HHS UM1 CA167552NCI NIH HHS UM1 CA186107
6 · The paper itself

Abstract

backgroundFew epidemiologic studies have investigated trace element exposure and skin cancer risk.

methodsToenail levels of mercury, selenium, chromium, iron, and zinc were measured from 6,708 women in the Nurses' Health Study (1984-2012) and 3,730 men in the Health Professionals Follow-up Study (1986-2012) with data from prior nested case-control studies. Participants were free of skin cancer at toenail collection and followed for incident basal cell carcinoma (BCC), squamous cell carcinoma (SCC), and melanoma. Cox proportional hazards models were used to compute hazard ratios (HR) and 95% confidence intervals (CI) of skin cancer associated with the elements in each study. We calculated pooled multivariable HRs using a fixed-effects model. During 26 to 28 years of follow-up, 2,433 BCC, 334 SCC, and 130 melanoma cases were documented.

resultsHigher toenail mercury levels were associated with risk of BCC [pooled HR for top vs. bottom quintiles = 1.34 (95% CI, 1.18-1.52),

conclusionsOur prospective data found that increased toenail mercury concentrations were associated with increased skin cancer risk. IMPACT: If our novel findings are confirmed, mercury may play a role in skin carcinogenesis.

Indexed as

FemaleHumansMaleNailsProspective StudiesRisk FactorsSkin NeoplasmsTrace ElementsTrace Elements

Identifiers

PMID31217167
PMCPMC6726507
OpenAlexW2951601811

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.