Cancer incidence and mortality in patients with type 2 diabetes treated with human insulin: a cohort study in Shanghai.
PLoS One
; 8(1): e53411, 2013.
Article
em En
| MEDLINE
| ID: mdl-23308218
ABSTRACT
AIM:
The aim was to investigate the association between human insulin and cancer incidence and mortality in Chinese patients with type 2 diabetes.METHODS:
We recruited 8,774 insulin-naïve diabetes patients from the Shanghai Diabetes Registry (SDR). The follow-up rate was 85.4%. All subjects were divided into the insulin use cohort (nâ=â3,639) and the non-insulin use cohort (nâ=â5,135). The primary outcome was the first diagnosis of any cancer. The secondary outcome was all-cause mortality. Cox proportional hazards model was used to estimate the relative risk (RR) of cancer and mortality.RESULTS:
We observed 98 cancer events in the insulin use cohort and 170 in the non-insulin use cohort. Cancer incidence rates were 78.6 and 74.3 per 10,000 patients per year in the insulin users and the non-insulin users, respectively. No significant difference in cancer risk was observed between the two cohorts (adjusted RRâ=â1.20, 95% CI 0.89-1.62, Pâ=â0.228). Regarding site-specific cancers, only the risk of liver cancer was significantly higher in the insulin users compared to that in the non-insulin users (adjusted RRâ=â2.84, 95% CI 1.12-7.17, Pâ=â0.028). The risks of overall mortality (adjusted RRâ=â1.89, 95% CI 1.47-2.43, P<0.0001) and death from cancer (adjusted RRâ=â2.16, 95% CI 1.39-3.35, Pâ=â0.001) were all significantly higher in the insulin users than in the non-insulin users.CONCLUSION:
There was no excess risk of overall cancer in patients with type 2 diabetes who were treated with human insulin. However, a significantly higher risk of liver cancer was found in these patients. Moreover, insulin users showed higher risks of overall and cancer mortality. Considering that individuals treated with insulin were more likely to be advanced diabetic patients, caution should be used in interpreting these results.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Diabetes Mellitus Tipo 2
/
Insulina
/
Neoplasias Hepáticas
/
Neoplasias
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article