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s 2079
Thiazolidinediones Reduce the Risk of
Hepatocellular Carcinoma in Patients with
Chronic Hepatitis B and Diabetes Mellitus - a
Cohort Study of 29,221 Subjects
Cheuk Fung Yip1, Grace Lai2, Yee-Kit Tse1, Henry Lik Yuen
Chan2 and Vincent Wai Sun Wong2, (1)Institute of Digestive
Disease, and Department of Medicine and Therapeutics, The
Chinese University of Hong Kong, Hong Kong, (2)Institute of
Digestive Disease, Department of Medicine and Therapeutics,
and State Key Laboratory of Digestive Disease, The Chinese
University of Hong Kong, Hong Kong
Background: Thiazolidinedione (TZD) is a well-established
class of oral anti-diabetic agents. It improves glycemic control
by activating peroxisome proliferator-activated receptor
gamma (PPARγ) that leads to improved insulin sensitivity
and enhanced glucose metabolism. Expression of PPARγ
has also been shown to suppress hepatocellular carcinoma
(HCC) cell growth in mice and in vitro models. We studied the
impact of TZD on the risk of HCC in a territory-wide cohort of
patients with chronic hepatitis B (CHB) and diabetes mellitus
(DM). Methods: All patients with CHB and DM from January
2000 to December 2017 were identified from the Hospital
Authority, Hong Kong. DM was defined by fasting plasma
glucose ≥7mmol/L in two measurements or ≥11.1mmol/L in
one measurement, hemoglobin A1c (HbA1c) ≥6.5%, use of antidiabetic
drugs and/or insulin, or diagnosis codes of DM. We
collected and analyzed patient demographics, comorbidities,
medications, laboratory test results, and subsequent
development of HCC. The use of TZD and other medications
during follow-up were modelled as time dependent covariates
in Cox proportional hazards model. Glycemic control was
summarized by time-weighted mean HbA1c during followup.
We excluded patients with follow-up <6 months, renal
replacement therapy, and estimated glomerular filtration rate
<30 mL/min/1.73 m2 at baseline. Results: We identified 29,221
patients with CHB and DM; 2,703 patients (9.3%) developed
HCC after a median follow-up of 7.2 years (interquartile range,
3.8–11.9 years); 1,160 patients received TZD during followup.
The crude incidence rates (95% confidence interval [CI])
of HCC in patients who did and did not receive TZD during
follow-up were 4.8 (2.3–8.8) and 11.9 (11.5–12.4) per 1,000
person-years, respectively. Use of TZD reduced the risk of
HCC after adjustment of age, gender, presence of cirrhosis,
laboratory parameters, use of other anti-diabetic agents and
medications, and nucleos(t)ide analogues (adjusted hazard
ratio [aHR] 0.47, 95% CI 0.22–0.98; P=0.045). On the other
hand, the use of metformin (aHR 0.74, 95% CI 0.68–0.81;
P<0.001), statins (0.83, 0.75–0.93; P<0.001), and aspirin or
clopidogrel (0.79, 0.71–0.88; P<0.001) also reduced the risk
of HCC, whereas the use of insulin (1.53, 1.38–1.70; P<0.001)
and sulfonylureas (1.11, 1.01–1.21; P=0.023) increased the
risk of HCC (Table 1). Conclusion: In patients with CHB
and DM, the use of TZD is associated with a lower risk of
HCC.
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