SUMMARY The distribution of 16 antigens of the HLA-A and 15 antigens of the HLA-B series of HLA system, the blood groups ABO, and Rh antigens were studied in 40 alcoholics with cirrhosis, 18 alcoholics without cirrhosis, and in normal control subjects. The group of alcoholics with cirrhosis showed a significantly high frequency of HLA-B13 (corrected P < 0-01) when compared with normal subjects, while the frequency of HLA-B13 was similar to normal in alcoholics without cirrhosis. On the basis of these findings, its seems that the carriers of HLA-B1 3 are more susceptible to liver damage caused by alcohol. Both groups of alcoholics and the normal controls had a similar distribution of ABO blood groups and Rh antigens.Many alcoholics do not develop hepatic disease no matter how long and how much alcohol they have ingested (Insunza et al., 1969). This seems to indicate a different individual resistance and/or susceptibility to hepatic damage related to diet, genetic background, or other possible factors. An important role has been assigned to the human leucocyte antigens (HLA) system in the susceptibility of the host to certain diseases, so that this system could well be a genetic marker in this respect (NIH, 1975;Sasazuki et al., 1977).On the other hand, an association between the blood groups of the ABO system and different diseases has also been reported (Doll et al., 1960;Kingsbury, 1971).In the present study, we examined the relationship between antigens of the HLA system and blood groups of the ABO system and Rh antigens and the heavy drinker's susceptibility to chronic liver damage.
MethodsHLA, blood groups, and Rh antigens were assayed in 58 subjects who were drinking or had been drinking more than the equivalent of 100 g ethanol daily for over 10 years. These 58 subjects were divided