Immunogenetic studies of multiple sclerosis patients in Caithness County, Scotland.

The present report indicates that there is an increased frequency of HLA-B7 in multiple sclerosis patients compared to unrelated controls and unaffected siblings. HLA-A3 was not significantly increased. The increased frequency of certain HLA antigens was not reflected in increased titres of serum measles antibodies in this group. In contrast to our previous studies, there were only minimal differences in the cellular response to measles antigen in multiple sclerosis patients as compared to siblings and unrelated controls.