The DOI matches its Crossref record; 42 of the 42 references it cites were found in a registry or an index.
Metformin and Pathologic Complete Responses to Neoadjuvant Chemotherapy in Diabetic Patients With Breast Cancer
Open accessAbstract
Purpose: Population studies have suggested that metformin use in diabetic patients decreases cancer incidence and mortality. Metformin inhibits the growth of cancer cells in vitro and tumors in vivo. However, there is little clinical data to support this. Our purpose was to determine whether metformin use was associated with a change in pathologic complete response (pCR) rates in diabetic patients with breast cancer receiving neoadjuvant chemotherapy. Patients and Methods: We identified 2,529 patients who received neoadjuvant chemotherapy for early-stage breast cancer between 1990 and 2007. Patients were compared by groups: 68 diabetic patients taking metformin, 87 diabetic patients not taking metformin, and 2,374 nondiabetic patients. pCR rates were compared between the three groups using χ 2 tests of independence and compared pair- wise using a binomial test of proportions. Factors predictive of pCR were assessed using a multivariate logistic regression model. Results: The rate of pCR was 24% in the metformin group, 8.0% in the nonmetformin group, and 16% in the nondiabetic group (P = .02). Pairwise comparisons between the metformin and nonmetformin groups (P = .007) and the nonmetformin and nondiabetic groups (P = .04) were significant. Comparison of the pCR rates between the metformin and nondiabetic groups trended toward but did not meet significance (P = .10). Metformin use was independently predictive of pCR (odds ratio, 2.95; P = .04) after adjustment for diabetes, body mass index, age, stage, grade, receptor status, and neoadjuvant taxane use. Conclusion: Diabetic patients with breast cancer receiving metformin and neoadjuvant chemotherapy have a higher pCR rate than do diabetics not receiving metformin. Additional studies to evaluate the potential of metformin as an antitumor agent are warranted.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
In the citing paper
“Metformin has also been found to cooperate with neo-adjuvant chemotherapy to result in complete tumor regression in some breast cancer patients (Jiralerspong et al., 2009).”
From Targeting Metabolism for Cancer Therapy (2017) · cites this paper as Jiralerspong et al., 2009
In the citing paper
“Type 2 diabetic patients receiving neo-adjuvant chemotherapy for breast cancer as well as metformin were more likely to have pathologic complete response (pCR) than patients not receiving it.”
From Metformin: An Old But Still the Best Treatment for Type 2 Diabetes (2013) · cites this paper as [156]
In the citing paper
“However, despite the increase in pCR, metformin did not significantly improve the estimated 3-year relapse-free survival rate [156].”
From Metformin: An Old But Still the Best Treatment for Type 2 Diabetes (2013) · cites this paper as [156]
In the citing paper
“evidence that metformin may also have an adjunctive effect in patients receiving chemotherapy(270)”
From Metformin, the Aspirin of the 21st Century: Its Role in Gestational Diabetes Mellitus, Prevention of Preeclampsia and Cancer, and the Promotion of Longevity (2017) · cites this paper as [270]
In the citing paper
“There is further evidence that metformin may also have an adjunctive effect in patients receiving chemotherapy(270), and there are now more than 100 ongoing trials”
From Metformin, the Aspirin of the 21st Century: Its Role in Gestational Diabetes Mellitus, Prevention of Preeclampsia and Cancer, and the Promotion of Longevity (2017) · cites this paper as [270]
In the citing paper
“Metformin treatment was associated with higher pathologic complete response among early-stage breast cancer patients receiving neoadjuvant therapy (95).”
From Diabetes and Cancer (2010) · cites this paper as [95]
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Overweight, obesity, and mortality from cancer in a prospectively studied cohort of U.S. Adults
Calle, E. E., Rodriguez, C., Walker-Thurmond, K., & Thun, M. J. (2003) · New England Journal of Medicine · doi:10.1056/nejmoa021423 · Cited by 7,696
Renehan, A. G., Tyson, M., Egger, M., Heller, R. F., & Zwahlen, M. (2008) · The Lancet · doi:10.1016/s0140-6736(08)60269-x · Cited by 5,219
TSC2 Mediates Cellular Energy Response to Control Cell Growth and Survival
Inoki, K., Zhu, T., & Guan, K.-L. (2003) · Cell · doi:10.1016/s0092-8674(03)00929-2 · Cited by 3,914
Overweight, obesity and cancer: epidemiological evidence and proposed mechanisms
Calle, E. E., & Kaaks, R. (2004) · Nature reviews. Cancer · doi:10.1038/nrc1408 · Cited by 3,613
Metformin and reduced risk of cancer in diabetic patients
Evans, J. M. M., Donnelly, L. A., Emslie-Smith, A. M., Alessi, D. R., & Morris, A. D. (2005) · BMJ · doi:10.1136/bmj.38415.708634.f7 · Cited by 2,388
The Kinase LKB1 Mediates Glucose Homeostasis in Liver and Therapeutic Effects of Metformin
Shaw, R. J., Lamia, K. A., Vasquez, D., Koo, S.-H., Bardeesy, N., DePinho, R. A., Montminy, M., & Cantley, L. C. (2005) · Science · doi:10.1126/science.1120781 · Cited by 1,950
Rastogi, P., Anderson, S. J., Bear, H. D., Geyer, C. E., Kahlenberg, M. S., Robidoux, A., Margolese, R. G., Hoehn, J. L., Vogel, V. G., Dakhil, S. R., et al. (2008) · Journal of Clinical Oncology · doi:10.1200/jco.2007.15.0235 · Cited by 1,789
Insulin-like growth factors and neoplasia
Pollak, M., Schernhammer, E. S., & Hankinson, S. E. (2004) · Nature reviews. Cancer · doi:10.1038/nrc1387 · Cited by 1,477
Molecular and metabolic mechanisms of insulin resistance and β-cell failure in type 2 diabetes
Muoio, D. M., & Newgard, C. B. (2008) · Nature Reviews Molecular Cell Biology · doi:10.1038/nrm2327 · Cited by 1,177
The LKB1 tumor suppressor negatively regulates mTOR signaling
Shaw, R. J., Bardeesy, N. M., Manning, B. D., Lopez, L. V., Kosmatka, M., DePinho, R. A., & Cantley, L. C. (2004) · Cancer Cell · doi:10.1016/j.ccr.2004.06.007 · Cited by 1,107
Research works printed but not linked: 3
- Mieog JS, 2007, Cochrane Database Syst Rev, 2, CD005002
- 10.1200/JCO.2002.20.1.42 · DOI
- Fairey AS, 2003, Cancer Epidemiol Biomarkers Prev, 12, 721
Cited by
Sorted by citations
Giovannucci, E., Harlan, D. M., Archer, M. C., Bergenstal, R. M., Gapstur, S. M., Habel, L. A., Pollak, M., Regensteiner, J. G., & Yee, D. (2010) · Diabetes Care · doi:10.2337/dc10-0666 · Cited by 2,366
“Metformin treatment was associated with higher pathologic complete response among early-stage breast cancer patients receiving neoadjuvant therapy (95).”
The LKB1-AMPK pathway: metabolism and growth control in tumour suppression
Shackelford, D. B., & Shaw, R. J. (2009) · Nature Reviews Cancer · doi:10.1038/nrc2676 · Cited by 1,943
“Similarly, a recent study of breast cancer in patients with type 2 diabetes who were taking metformin reported a significant increase in pathological complete response rates (that is, no evidence of cancer cells in breast tissue or draining lymph nodes”
BackgroundTargeting cancer metabolism: a therapeutic window opens
Heiden, M. G. V. (2011) · Nature Reviews Drug Discovery · doi:10.1038/nrd3504 · Cited by 1,443
“, and women taking metformin have an increased tumour response to neoadjuvant chemotherapy for breast cancer that may extend to patients with cancer who do not have diabete”
BackgroundThe Control of the Metabolic Switch in Cancers by Oncogenes and Tumor Suppressor Genes
Levine, A. J., & Puzio-Kuter, A. M. (2010) · Science · doi:10.1126/science.1193494 · Cited by 1,243
Hirsch, H. A., Iliopoulos, D., Tsichlis, P. N., & Struhl, K. (2009) · Cancer Research · doi:10.1158/0008-5472.can-09-2994 · Cited by 1,115
“epidemiologic observation that diabetics treated with metformin have a lower incidence of cancer (5, 6).”
Background
Metadata
- Authors
- Jiralerspong, S., Palla, S. L., Giordano, S. H., Meric-Bernstam, F., Liedtke, C., Barnett, C. M., Hsu, L., Hung, M.-C., Hortobagyi, G. N., & Gonzalez-Angulo, A. M.
- Affiliations
- The University of Texas MD Anderson Cancer Center (US)
- From the Departments of Breast Medical Oncology, Biochemistry and Molecular Biology, Quantitative Sciences, Surgical Oncology, Pharmacy, Molecular and Cellular Oncology, and Systems Biology, The University of Texas M. D. Anderson Cancer Center, Houston, TX; and the Department of Gynecology and Obstetrics, University of Muenster, Muenster, Germany.
- Venue
- Journal of Clinical Oncology
- Published
- 2009-07-10
- Volume
- 27
- Issue
- 20
- Pages
- 3297-3302
- ISSN
- 0732-183X (ISSN-L)
- 1527-7755
- PMC
- PMC2736070
- OpenAlex
- W2171998898
- Cited by
- 880
- References
- 42
- Citations by year
- 2026: 12 · 2025: 15 · 2024: 18 · 2023: 34 · 2022: 31 · 2021: 51 · 2020: 43 · 2019: 60 · 2018: 34 · 2017: 42 · 2016: 54 · 2015: 53 · 2014: 73 · 2013: 97 · 2012: 76
- FWCI
- 35.26
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Journal of Clinical Oncology (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- American Association for Cancer Research
- Breast Cancer Research Foundation
- Amgen
- American Society of Clinical Oncology
- Deutsche Forschungsgemeinschaft
- National Institutes of Health (5k23ca121994-03)
- National Cancer Institute (1K23CA121994-01), K23-CA121994, 1K23CA121994)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Breast Cancer Treatment Studies
- Health Sciences › Medicine › Oncology › Cancer Risks and Factors
- Keywords
- metformin, breast cancer, diabetes mellitus, neoadjuvant chemotherapy, pathological complete response, predictors of treatment response
- MeSH terms
- Adult, Aged, Antineoplastic Combined Chemotherapy Protocols, Breast Neoplasms, Diabetes Mellitus, Female, Humans, Hypoglycemic Agents, Metformin, Middle Aged, Remission Induction, Multivariate Analysis, Logistic Models, Survival Analysis, Treatment Outcome, Neoadjuvant Therapy
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
