Effect of metformin versus placebo on metabolic factors in the MA.32 randomized breast cancer trial
Abstract Metformin may exert anticancer effects through indirect (mediated by metabolic changes) or direct mechanisms. The goal was to examine metformin impact on metabolic factors in non-diabetic subjects and determine whether this impact varies by baseline BMI, insulin, and rs11212617 SNP in CCTG...
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2021
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oai:doaj.org-article:ed8c22cdd63b4d8ab3a69bbf18ba99092021-12-02T18:06:32ZEffect of metformin versus placebo on metabolic factors in the MA.32 randomized breast cancer trial10.1038/s41523-021-00275-z2374-4677https://doaj.org/article/ed8c22cdd63b4d8ab3a69bbf18ba99092021-06-01T00:00:00Zhttps://doi.org/10.1038/s41523-021-00275-zhttps://doaj.org/toc/2374-4677Abstract Metformin may exert anticancer effects through indirect (mediated by metabolic changes) or direct mechanisms. The goal was to examine metformin impact on metabolic factors in non-diabetic subjects and determine whether this impact varies by baseline BMI, insulin, and rs11212617 SNP in CCTG MA.32, a double-blind placebo-controlled randomized adjuvant breast cancer (BC) trial. 3649 subjects with T1-3, N0-3, M0 BC were randomized; pretreatment and 6-month on-treatment fasting plasma was centrally assayed for insulin, leptin, highly sensitive C-reactive protein (hsCRP). Glucose was measured locally and homeostasis model assessment (HOMA) calculated. Genomic DNA was analyzed for the rs11212617 SNP. Absolute and relative change of metabolic factors (metformin versus placebo) were compared using Wilcoxon rank and t-tests. Regression models were adjusted for baseline differences and assessed interactions with baseline BMI, insulin, and the SNP. Mean age was 52 years. The majority had T2/3, node positive, hormone receptor positive, HER2 negative BC treated with (neo)adjuvant chemotherapy and hormone therapy. Median baseline body mass index (BMI) was 27.4 kg/m2 (metformin) and 27.3 kg/m2 (placebo). Median weight change was −1.4 kg (metformin) vs +0.5 kg (placebo). Significant improvements were seen in all metabolic factors, with 6 month standardized ratios (metformin/placebo) of 0.85 (insulin), 0.83 (HOMA), 0.80 (leptin), and 0.84 (hsCRP), with no qualitative interactions with baseline BMI or insulin. Changes did not differ by rs11212617 allele. Metformin (vs placebo) led to significant improvements in weight and metabolic factors; these changes did not differ by rs11212617 allele status.Pamela J. GoodwinRyan J. O. DowlingMarguerite EnnisBingshu E. ChenWendy R. ParulekarLois E. ShepherdMargot J. BurnellRachel Vander MeerAndrea MolckovskyAnagha GurjalKaren A. GelmonJennifer A. LigibelDawn L. HershmanIngrid A. MayerTimothy J. WhelanTimothy J. HobdayPriya RastogiManuela Rabaglio-PorettiJulie LemieuxAlastair M. ThompsonDaniel W. ReaVuk StambolicNature PortfolioarticleNeoplasms. Tumors. Oncology. Including cancer and carcinogensRC254-282ENnpj Breast Cancer, Vol 7, Iss 1, Pp 1-8 (2021) |
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens RC254-282 |
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens RC254-282 Pamela J. Goodwin Ryan J. O. Dowling Marguerite Ennis Bingshu E. Chen Wendy R. Parulekar Lois E. Shepherd Margot J. Burnell Rachel Vander Meer Andrea Molckovsky Anagha Gurjal Karen A. Gelmon Jennifer A. Ligibel Dawn L. Hershman Ingrid A. Mayer Timothy J. Whelan Timothy J. Hobday Priya Rastogi Manuela Rabaglio-Poretti Julie Lemieux Alastair M. Thompson Daniel W. Rea Vuk Stambolic Effect of metformin versus placebo on metabolic factors in the MA.32 randomized breast cancer trial |
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Abstract Metformin may exert anticancer effects through indirect (mediated by metabolic changes) or direct mechanisms. The goal was to examine metformin impact on metabolic factors in non-diabetic subjects and determine whether this impact varies by baseline BMI, insulin, and rs11212617 SNP in CCTG MA.32, a double-blind placebo-controlled randomized adjuvant breast cancer (BC) trial. 3649 subjects with T1-3, N0-3, M0 BC were randomized; pretreatment and 6-month on-treatment fasting plasma was centrally assayed for insulin, leptin, highly sensitive C-reactive protein (hsCRP). Glucose was measured locally and homeostasis model assessment (HOMA) calculated. Genomic DNA was analyzed for the rs11212617 SNP. Absolute and relative change of metabolic factors (metformin versus placebo) were compared using Wilcoxon rank and t-tests. Regression models were adjusted for baseline differences and assessed interactions with baseline BMI, insulin, and the SNP. Mean age was 52 years. The majority had T2/3, node positive, hormone receptor positive, HER2 negative BC treated with (neo)adjuvant chemotherapy and hormone therapy. Median baseline body mass index (BMI) was 27.4 kg/m2 (metformin) and 27.3 kg/m2 (placebo). Median weight change was −1.4 kg (metformin) vs +0.5 kg (placebo). Significant improvements were seen in all metabolic factors, with 6 month standardized ratios (metformin/placebo) of 0.85 (insulin), 0.83 (HOMA), 0.80 (leptin), and 0.84 (hsCRP), with no qualitative interactions with baseline BMI or insulin. Changes did not differ by rs11212617 allele. Metformin (vs placebo) led to significant improvements in weight and metabolic factors; these changes did not differ by rs11212617 allele status. |
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article |
author |
Pamela J. Goodwin Ryan J. O. Dowling Marguerite Ennis Bingshu E. Chen Wendy R. Parulekar Lois E. Shepherd Margot J. Burnell Rachel Vander Meer Andrea Molckovsky Anagha Gurjal Karen A. Gelmon Jennifer A. Ligibel Dawn L. Hershman Ingrid A. Mayer Timothy J. Whelan Timothy J. Hobday Priya Rastogi Manuela Rabaglio-Poretti Julie Lemieux Alastair M. Thompson Daniel W. Rea Vuk Stambolic |
author_facet |
Pamela J. Goodwin Ryan J. O. Dowling Marguerite Ennis Bingshu E. Chen Wendy R. Parulekar Lois E. Shepherd Margot J. Burnell Rachel Vander Meer Andrea Molckovsky Anagha Gurjal Karen A. Gelmon Jennifer A. Ligibel Dawn L. Hershman Ingrid A. Mayer Timothy J. Whelan Timothy J. Hobday Priya Rastogi Manuela Rabaglio-Poretti Julie Lemieux Alastair M. Thompson Daniel W. Rea Vuk Stambolic |
author_sort |
Pamela J. Goodwin |
title |
Effect of metformin versus placebo on metabolic factors in the MA.32 randomized breast cancer trial |
title_short |
Effect of metformin versus placebo on metabolic factors in the MA.32 randomized breast cancer trial |
title_full |
Effect of metformin versus placebo on metabolic factors in the MA.32 randomized breast cancer trial |
title_fullStr |
Effect of metformin versus placebo on metabolic factors in the MA.32 randomized breast cancer trial |
title_full_unstemmed |
Effect of metformin versus placebo on metabolic factors in the MA.32 randomized breast cancer trial |
title_sort |
effect of metformin versus placebo on metabolic factors in the ma.32 randomized breast cancer trial |
publisher |
Nature Portfolio |
publishDate |
2021 |
url |
https://doaj.org/article/ed8c22cdd63b4d8ab3a69bbf18ba9909 |
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