Thirty-four of 99 multiply transfused Chinese (49 females, 50 males) w
ith thalassaemia major were positive for antibody to hepatitis C virus
. There was no sex predominance in seropositivity with 18 females and
16 males positive. The mean (+/- SD) age and units of blood transfused
were significantly higher in the seropositive patients (167 +/- 48 mo
nths, 206 +/- 82 units respectively) than the seronegative patients (1
13 +/- 56 months, 124 +/- 80 units respectively). The seropositive pat
ients had higher mean (+/- SD) serum alanine aminotransferase, asparta
te aminotransferase and ferritin concentrations (91 +/- 82 IU/L, 67 +/
- 38 IU/L, 4797 +/- 2522 ng/ml respectively) than the seronegative pat
ients (38 +/- 29 IU/L, 48 +/- 28 IU/L, 3620 +/- 2140 ng/ml respectivel
y). Serum ferritin had an independent and significant effect on serum
alanine aminotransferase in addition to that of seropositivity to hepa
titis C virus.