hla-a 2 or cw 7-positive patients with ra experienced a low frequency of side effects from penicillamine ( 12 % vs 49 % of a 2-negative patients : p less than 0.01 , 17 % vs 46 % of cw 7-negative patients : p less than 0.05 ) .
C0003873
ra
C0030817
penicillamine