Challenges to hemoglobin A1c as a therapeutic target for type 2 diabetes mellitus

Abstract Glycated hemoglobin (HbA1c) is widely accepted as the most reliable measure of long‐term glycemia. However, there is disagreement among professional medical societies on a proper glycemic target for long‐term benefits in type 2 diabetes (T2D). The use of some glucose‐lowering drugs was asso...

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Main Authors: Masayuki Ikeda, Rumiko Shimazawa
Format: Article
Language:English
Published: Wiley 2019-07-01
Series:Journal of General and Family Medicine
Subjects:
Online Access:https://doi.org/10.1002/jgf2.244
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author Masayuki Ikeda
Rumiko Shimazawa
author_facet Masayuki Ikeda
Rumiko Shimazawa
author_sort Masayuki Ikeda
collection DOAJ
description Abstract Glycated hemoglobin (HbA1c) is widely accepted as the most reliable measure of long‐term glycemia. However, there is disagreement among professional medical societies on a proper glycemic target for long‐term benefits in type 2 diabetes (T2D). The use of some glucose‐lowering drugs was associated with heart failure despite substantial lowering of HbA1c. The failure of intensive glycemic control to reduce cardiovascular risk in some trials again brought into question the usefulness of HbA1c as a therapeutic target in T2D. In large cardiovascular outcome trials, some newer glucose‐lowering drugs were associated with higher risks of heart failure or amputation despite comparable glycemic control between the test and placebo groups. Here, we provide evidence that variation in hemoglobin glycation between individuals is responsible for these inconsistencies. We suggest that further research be conducted in this area and that the findings be applied to clinical trials and practice.
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spelling doaj.art-13798f6c2e7f4c118f300abff129a3002022-12-21T23:58:46ZengWileyJournal of General and Family Medicine2189-79482019-07-0120412913810.1002/jgf2.244Challenges to hemoglobin A1c as a therapeutic target for type 2 diabetes mellitusMasayuki Ikeda0Rumiko Shimazawa1Department of Medical Informatics Kagawa University Hospital Kagawa JapanDepartment of Clinical Pharmacology Tokai University School of Medicine Kanagawa JapanAbstract Glycated hemoglobin (HbA1c) is widely accepted as the most reliable measure of long‐term glycemia. However, there is disagreement among professional medical societies on a proper glycemic target for long‐term benefits in type 2 diabetes (T2D). The use of some glucose‐lowering drugs was associated with heart failure despite substantial lowering of HbA1c. The failure of intensive glycemic control to reduce cardiovascular risk in some trials again brought into question the usefulness of HbA1c as a therapeutic target in T2D. In large cardiovascular outcome trials, some newer glucose‐lowering drugs were associated with higher risks of heart failure or amputation despite comparable glycemic control between the test and placebo groups. Here, we provide evidence that variation in hemoglobin glycation between individuals is responsible for these inconsistencies. We suggest that further research be conducted in this area and that the findings be applied to clinical trials and practice.https://doi.org/10.1002/jgf2.244cardiovascular diseasesclinical trialsglycated hemoglobinhypoglycemic agentsoutcome assessmenttype 2 diabetes mellitus
spellingShingle Masayuki Ikeda
Rumiko Shimazawa
Challenges to hemoglobin A1c as a therapeutic target for type 2 diabetes mellitus
Journal of General and Family Medicine
cardiovascular diseases
clinical trials
glycated hemoglobin
hypoglycemic agents
outcome assessment
type 2 diabetes mellitus
title Challenges to hemoglobin A1c as a therapeutic target for type 2 diabetes mellitus
title_full Challenges to hemoglobin A1c as a therapeutic target for type 2 diabetes mellitus
title_fullStr Challenges to hemoglobin A1c as a therapeutic target for type 2 diabetes mellitus
title_full_unstemmed Challenges to hemoglobin A1c as a therapeutic target for type 2 diabetes mellitus
title_short Challenges to hemoglobin A1c as a therapeutic target for type 2 diabetes mellitus
title_sort challenges to hemoglobin a1c as a therapeutic target for type 2 diabetes mellitus
topic cardiovascular diseases
clinical trials
glycated hemoglobin
hypoglycemic agents
outcome assessment
type 2 diabetes mellitus
url https://doi.org/10.1002/jgf2.244
work_keys_str_mv AT masayukiikeda challengestohemoglobina1casatherapeutictargetfortype2diabetesmellitus
AT rumikoshimazawa challengestohemoglobina1casatherapeutictargetfortype2diabetesmellitus