Effects of TZD use and discontinuation on fracture rates in ACCORD bone study
Open accessAbstract
CONTEXT: In trials, thiazolidinediones (TZDs) increase fracture risk in women, but the effects of discontinuation are unknown. OBJECTIVE: The objective was to investigate the effects of TZD use and discontinuation on fractures in women and men. DESIGN: This was a longitudinal observational cohort study using data from the Action to Control Cardiovascular Risk in Diabetes (ACCORD) trial bone ancillary study. Duration of TZD use and discontinuation during ACCORD, assessed every 2-4 months at clinic visits, were modeled as time-varying covariates in proportional hazards models for occurrence of first non-spine fracture. PARTICIPANTS: We studied a total of 6865 participants in ACCORD BONE. MAIN OUTCOME MEASURES: Main outcome measures were centrally adjudicated non-spine fracture. RESULTS: Average age was 62.4 (SD, 6.6) years; average duration of diabetes was 11.1 (SD, 7.8) years. Rosiglitazone was used by 74% and pioglitazone by 13% of participants. During a mean follow-up of 4.8 (SD, 1.5) years, 262 men and 287 women experienced at least one non-spine fracture. The fracture rate was higher in women with 1-2 years of TZD use (hazard ratio [HR] = 2.32; 95% confidence interval [CI], 1.49, 3.62) or >2 years of TZD use (HR = 2.01; 95% CI, 1.35, 2.98), compared with no use. The fracture rate was reduced in women who had discontinued TZD use for 1-2 years (HR = 0.57; 95% CI, 0.35, 0.92) or > 2 years (HR = 0.42; 95% CI, 0.24, 0.74) compared with current users. TZD use and discontinuation were not associated with non-spine fractures in men. CONCLUSIONS: TZD use was associated with increased non-spine fractures in women, but not men, with type 2 diabetes. When women discontinued TZD use, the fracture effects were attenuated.
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Pioglitazone is associated with heart failure, fluid retention, weight gain, osteoporosis, falls or fractures, and/or macular edema.
“Pioglitazone, if used at all, should be used very cautiously in older adults on insulin therapy as well as in those with or at risk for heart failure, fluid retention, weight gain, osteoporosis, falls or fractures, and/or macular edema (113,114).”
From 13. Older Adults: Standards of Care in Diabetes—2025 (2025) · cites this paper as [113]
The Discussion reports prior evidence of increased fracture risk with pioglitazone and bone loss in some populations, while noting that ACCORD could not assess pioglitazone separately from rosiglitazone. The paper does not establish the other attributed concerns—heart failure, fluid retention, weight gain, falls, or macular edema—or a specific risk from use with insulin. (LLM, conf=0.88)
Experimental — accuracy not yet measuredPioglitazone has low risk for hypoglycemia but carries risks for heart failure, fluid retention, weight gain, osteoporosis, and/or macular edema.
“Pioglitazone has low risk for hypoglycemia but should be used cautiously and in select individuals due to risks for heart failure, fluid retention, weight gain, osteoporosis, and/or macular edema”
From 13. Older Adults: Standards of Care in Diabetes—2026 (2026) · cites this paper as [118]
The Discussion (page not provided) reports increased bone loss with pioglitazone in some groups and cites increased fracture risk with pioglitazone, supporting the skeletal-risk portion of the claim. The paper does not establish low hypoglycemia risk or address heart failure, fluid retention, weight gain, or macular edema as pioglitazone risks. (LLM, conf=0.88)
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- Authors
- Schwartz, A. V., Chen, H., Ambrosius, W. T., Sood, A., Josse, R. G., Bonds, D. E., Schnall, A. M., Vittinghoff, E., Bauer, D. C., Banerji, M. A., Cohen, R. M., Hamilton, B. P., Isakova, T., Sellmeyer, D. E., Simmons, D. L., Shibli-Rahhal, A., Williamson, J. D., & Margolis, K. L.
- Affiliations
- St. Michael's Hospital (CA)
- University of Iowa (US)
- Corresponding author
- Schwartz, Ann V.
- ORCID
- Venue
- The Journal of Clinical Endocrinology & Metabolism
- Publisher
- The Endocrine Society
- Published
- 2015-11
- Volume
- 100
- Issue
- 11
- Pages
- 4059-4066
- ISSN
- 0021-972X (ISSN-L)
- 1945-7197
- PMC
- PMC4702444
- OpenAlex
- W2124007477
- Cited by
- 85
- References
- 2
- Citations by year
- 2026: 2 · 2025: 5 · 2024: 5 · 2023: 5 · 2022: 6 · 2021: 10 · 2020: 8 · 2019: 16 · 2018: 9 · 2017: 12 · 2016: 6 · 2015: 1
- FWCI
- 9.63
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institutes of Health (n01hc95183-23-0-0, n01hc95180-24-0-1, n01hc95184-24-0-1, n01hc95181-23-0-1, n01hc95182-23-0-1, n01hc95178-28-0-1, n01hc95179-25-0-0)
- National Heart, Lung, and Blood Institute (N01- HC-95181, N01 HC095184, N01-HC- 95180, N01-HC-95178, N01 HC095182, N01 HC095181, Y01 HC001010, N01-HC-095183, N01 HC095178, N01-HC-95184, IAAY1-HC-1010, IAA #Y1-HC-9035, N01 HC095180, Y01 HC009035, N01‐HC‐95183, N01-HC-95182, N01 HC095179)
- National Institute of Diabetes and Digestive and Kidney Diseases (R01DK069514)
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (K24AR051895)
- Topics
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
- Health Sciences › Medicine › Emergency Medicine › HIV-related health complications and treatments
- Keywords
- thiazolidinediones, fracture risk, rosiglitazone, pioglitazone, type 2 diabetes, sex differences, drug discontinuation, ACCORD trial, bone health
- MeSH terms
- Rosiglitazone, Pioglitazone, Aged, Diabetes Mellitus, Type 2, Female, Follow-Up Studies, Humans, Hypoglycemic Agents, Longitudinal Studies, Male, Middle Aged, Cohort Studies, Incidence, Thiazolidinediones, Fractures, Bone
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