Evidence map›Paper›PMID 31860085›Full record

ArticleJournal of the National Cancer Institute2020

Oral Leukoplakia and Risk of Progression to Oral Cancer: A Population-Based Cohort Study.

Anil K Chaturvedi, Natalia Udaltsova, Eric A Engels, Jed A Katzel, Elizabeth L Yanik, Hormuzd A Katki, Mark W Lingen, Michael J Silverberg

Open access · greenAbstract read
In one paragraph

Article in Journal of the National Cancer Institute, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 102 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
102citing papers in PubMed, 8 pooled it
10.7field-weighted citation impact, top 1% 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

102 citing papers in PubMed, 8 syntheses or guidelines pooled it, 172 citations in OpenAlex.

  1. Predicting Malignant Transformation in Oral Epithelial Dysplasia: A Systematic Comparison of Artificial Intelligence-Based Risk Models and Pathologist-Based Microscopy.Journal of oral pathology & medicine : official publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology · 2026
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  14. miR-185 in salivary extracellular vesicles for early diagnosis of malignant transformation in oral leukoplakia: a clinical study.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026
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  18. Topical Imiquimod for Oral Cavity Leukoplakia and Dysplasia: A Scoping Review.Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2026
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42 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 5 institutions in 1 country.

Anil K ChaturvediDivision of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA.
Natalia UdaltsovaDepartment of Oncology, Kaiser Permanente, San Francisco, CA, USA.
Eric A EngelsDivision of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA.
Jed A KatzelDepartment of Oncology, Kaiser Permanente, San Francisco, CA, USA.
Elizabeth L YanikWashington University at St. Louis, St. Louis, MO, USA.
Hormuzd A KatkiDivision of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA.
Mark W LingenDepartment of Pathology, University of Chicago, Chicago, IL, USA.
Michael J SilverbergDivision of Research, Kaiser Permanente, Oakland, CA, USA.
National Cancer Institute · USKaiser Permanente San Francisco Medical Center · USKaiser Permanente · USUniversity of Chicago · USWashington University in St. Louis · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe optimal clinical management of oral precancer remains uncertain. We investigated the natural history of oral leukoplakia, the most common oral precancerous lesion, to estimate the relative and absolute risks of progression to cancer, the predictive accuracy of a clinician's decision to biopsy a leukoplakia vis-à-vis progression, and histopathologic predictors of progression.

methodsWe conducted a retrospective cohort study (1996-2012) of patients with oral leukoplakia (n = 4886), identified using electronic medical records within Kaiser Permanente Northern California. Among patients with leukoplakia who received a biopsy (n = 1888), we conducted a case-cohort study to investigate histopathologic predictors of progression. Analyses included indirect standardization and unweighted or weighted Cox regression.

resultsCompared with the overall Kaiser Permanente Northern California population, oral cancer incidence was substantially elevated in oral leukoplakia patients (standardized incidence ratio = 40.8, 95% confidence interval [CI] = 34.8 to 47.6; n = 161 cancers over 22 582 person-years). Biopsied leukoplakias had a higher oral cancer risk compared with those that were not biopsied (adjusted hazard ratio = 2.38, 95% CI = 1.73 to 3.28). However, to identify a prevalent or incident oral cancer, the biopsy decision had low sensitivity (59.6%), low specificity (62.1%), and moderate positive-predictive value (5.1%). Risk of progression to oral cancer statistically significantly increased with the grade of dysplasia; 5-year competing risk-adjusted absolute risks were: leukoplakia overall = 3.3%, 95% CI = 2.7% to 3.9%; no dysplasia = 2.2%, 95% CI = 1.5% to 3.1%; mild-dysplasia = 11.9%, 95% CI = 7.1% to 18.1%; moderate-dysplasia = 8.7%, 95% CI = 3.2% to 17.9%; and severe dysplasia = 32.2%, 95% CI = 8.1%-60.0%. Yet 39.6% of cancers arose from biopsied leukoplakias without dysplasia.

conclusionsThe modest accuracy of the decision to biopsy a leukoplakia vis-à-vis presence or eventual development of oral cancer highlights the need for routine biopsy of all leukoplakias regardless of visual or clinical impression. Leukoplakia patients, particularly those with dysplasia, need to be closely monitored for signs of early cancer.

Indexed as

AdultAgedCaliforniaCohort StudiesDisease ProgressionFemaleHumansLeukoplakia, OralMaleMiddle AgedMouth NeoplasmsPrecancerous ConditionsRetrospective StudiesRisk

Identifiers

PMID31860085
PMCPMC7566351
OpenAlexW2996689501

What OpenQuestion holds

Textmetadata
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.