HL-A antigens in cystic fibrosis.

HL-A frequencies of 28 patients with cystic fibrosis and of 240 unrelated 
controls were compared. No statistically significant difference of HL-A frequencies could 
be observed for both groups. A slightly increased HL-A 2 frequency 
is considered a chance phenomenon. In accordance with a previously demonstrated 
lacking association of the ABH blood group substances no correlation with 
certain HL-A antigens was demonstrable. 