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IARC MONOGRAPHS ON THE EVALUATION OF CARCINOGENIC ...

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Table 11 (contd)<br />

Reference Area Study base Type of analysis Exposure measures Outcome<br />

measures<br />

Sun et al.<br />

(2001)<br />

Yu et al.<br />

(1997a)<br />

Lu et al.<br />

(1998)<br />

Sun et al.<br />

(1999)<br />

Taiwan,<br />

China<br />

Same as Wang et al.<br />

(1996)<br />

Taiwan Male patients from<br />

Government<br />

Employee Central<br />

Clinics and a Taipei<br />

hospital, aged 30–65<br />

during enrolment,<br />

1988–92;<br />

n = 4841 HBsAgpositive,<br />

n = 2501 HBsAgnegative<br />

China Seven townships in<br />

Qidong.<br />

Men aged 20–60<br />

years during<br />

enrolment;<br />

follow-up: 1987–97<br />

China Men in 2 townships<br />

screened and found<br />

positive for chronic<br />

HBV infection,<br />

recruited in 1987–98;<br />

n = 145<br />

Nested case–control<br />

analysis based on 79<br />

cases and 149<br />

controls, all HBsAgpositive<br />

Nested case–control<br />

on 43 cases and 2<br />

matched controls per<br />

case, one HBsAg<br />

positive and one<br />

negative<br />

Nested case–control<br />

among HBsAg<br />

carriers; 30 cases and<br />

5 controls per case<br />

(matched for age,<br />

place of residence)<br />

Aflatoxin–albumin<br />

adducts<br />

Baseline interviews<br />

and measurement of<br />

urinary aflatoxin and<br />

aflatoxin adducts<br />

AFB1–albumin<br />

adducts<br />

Cohort analysis AFM1 measured in<br />

8 pooled urinary<br />

samples<br />

Same as Wang<br />

et al. (1996),<br />

1991–97<br />

Covariate Results Comments<br />

Same as Wang<br />

et al. (1996),<br />

anti-HCV,<br />

GSTM1,<br />

GSTT1<br />

HCC Sociodemographic,<br />

alcohol,<br />

smoking<br />

Cases OR 95% CI<br />

Aflatoxin– 47 2.0 1.1–3.7<br />

albumin<br />

adducts<br />

Cases OR 95% CI<br />

AFM1 23 6.0 1.2–29<br />

AFP1 18 2.0 0.5–8.0<br />

AFB1 17 2.0 0.7–5.8<br />

AFB1–N7- 6 2.8 0.6–13<br />

guanine<br />

adducts<br />

PLC Cases OR 95% CI<br />

HCC Anti-HCV,<br />

family history<br />

of HCC,<br />

smoking,<br />

alcohol<br />

AFB1- 23 3.5 [1.3–10]<br />

albumin<br />

adducts<br />

Cases RR 95% CI<br />

AFM1 17 4.5* 1.6–13<br />

Statistically significant<br />

interaction with GSTT1<br />

genotypes<br />

All analyses restricted to<br />

HBsAg-positive subjects<br />

Increased risks for HCC<br />

among anti-HCV (RR,<br />

6.0) and those with family<br />

history of HCC (RR, 4.7)<br />

*Adjusted for anti-HCV<br />

and HCC family history<br />

AFB1, aflatoxin B1; AFM1, aflatoxin M1; AFP1, aflatoxin P1; CI, confidence interval; GST, glutathione S-transferase; HBsAg, hepatitis B surface antigen; HBV, hepatitis B virus; HCC, hepatocellular carcinoma; HCV,<br />

hepatitis C virus; NA, not applicable; OR, odds ratio; OV, Opisthorchis viverrini; PHC, primary hepatocellular carcinoma; p–yr, person–years; RR, relative risk; SMR, standardized mortality ratio; SPIR, standardized<br />

proportionate incidence ratio<br />

AFLATOXINS 201

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