Cited by 205Pancreatic and Hepatic Oncology ResearchPancreatic function and diabetesPancreatitis Pathology and Treatment

Fasting blood glucose levels provide estimate of duration and progression of pancreatic cancer before diagnosis

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Sharma, Ayush, Smyrk, Thomas C., Levy, Michael J., Topazian, Mark A., Chari, Suresh T.·2018·Gastroenterology

Abstract

Background & aims It is unclear how long pancreatic ductal adenocarcinomas (PDACs) are present before diagnosis. Patients with PDAC usually develop hyperglycemia and diabetes before the tumor is identified. If early invasive PDACs are associated with hyperglycemia, the duration of hyperglycemia should associate with the time that they have had the tumor.Methods We collected data on patients with PDACs from medical databases in Olmsted County, Minnesota, from 2000 through 2015 and from the Mayo Clinic's tumor registry from January 1, 1976, through January 1, 2017. We compared glycemic profiles of patients with PDAC (cases) compared with patients without cancer, matched for age and sex (controls). We analyzed temporal fasting blood glucose (FBG) profiles collected for 60 months before patients received a PDAC diagnosis (index date) (n = 219) (cohort A), FBG profiles of patients with resected PDAC (n = 526) stratified by tumor volume and grade (cohort B), and temporal FBG profiles of patients with resected PDACs from whom long-term FBG data were available (n = 103) (cohort C). The primary outcome was to estimate duration of presence of invasive PDAC before its diagnosis based on hyperglycemia, defined as significantly higher (P < .05) FBG levels in cases compared with controls.Results In cohort A, the mean FBG did not differ significantly between cases and controls 36 months before the index date. Hyperglycemia was first noted 36 to 30 months before PDAC diagnosis in all cases, those with or without diabetes at baseline and those with or without resection at diagnosis. FBG level increased until diagnosis of PDAC. In cohort B, the mean FBG did not differ significantly in controls vs cases with PDACs below 1.0 mL. The smallest tumor volume associated with hyperglycemia was 1.1 to 2.0 mL; FBG level increased with tumor volume. FBG varied with tumor grade: well- or moderately differentiated tumors (5.8 mL) produced the same FBG levels as smaller, poorly differentiated tumors (1.5 mL) (P < .001). In cohort C, the duration of prediagnostic hyperglycemia for cases with large-, medium-, or small-volume PDACs was 36 to 24, 24 to 12, and 12 to 0 months, respectively. PDAC resection resolved hyperglycemia, regardless of tumor location.Conclusions In a case-control study of patients with PDAC from 2 databases, we associated FBG level with time to PDAC diagnosis and tumor volume and grade. Patients are hyperglycemic for a mean period of 36 to 30 months before PDAC diagnosis; this information might be incorporated into strategies for early detection.

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Crossref · 10.1053/j.gastro.2018.04.025

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Authors
Sharma, A., Smyrk, T. C., Levy, M. J., Topazian, M. A., & Chari, S. T.
Affiliations
Mayo Clinic (US)
Corresponding author
Chari, Suresh T.
Venue
Gastroenterology
Publisher
Elsevier BV
Published
2018-08
Volume
155
Issue
2
Pages
490-500.e2
ISSN
0016-5085 (ISSN-L)
OpenAlex
W2802707526
Cited by
204
References
29
Citations by year
2026: 17 · 2025: 21 · 2024: 25 · 2023: 22 · 2022: 33 · 2021: 32 · 2020: 31 · 2019: 17 · 2018: 6
FWCI
8.16
Type
journal article
Language
en
Open access
Locations
  • Gastroenterology (acceptedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Ministry of Ayurveda, Yoga and Naturopathy, Unani, Siddha and Homoeopathy
  • National Institute on Aging (R01AG034676)
  • National Institute of Diabetes and Digestive and Kidney Diseases (U01DK108288)
Topics
  • Health Sciences › Medicine › Oncology › Pancreatic and Hepatic Oncology Research
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Health Sciences › Medicine › Surgery › Pancreatitis Pathology and Treatment
Keywords
pancreatic ductal adenocarcinoma, fasting blood glucose, diabetes mellitus, tumor progression, tumor volume, tumor grade, time to diagnosis, glycemic markers, cancer screening, Olmsted County, Minnesota, resected pancreatic cancer, tumor differentiation
MeSH terms
Aged, Blood Glucose, Diabetes Mellitus, Fasting, Female, Humans, Hyperglycemia, Male, Middle Aged, Minnesota, Pancreas, Pancreatic Neoplasms, Time Factors, Case-Control Studies, Disease Progression, Carcinoma, Pancreatic Ductal, Tumor Burden

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