although hla-dr3 was significantly increased in whites ( 25 of 50 , 50 % ) and blacks ( 4 of 5 , 80 % ) with primary ss compared with race-matched normal controls , it was not appreciably elevated in those with systemic lupus erythematosus ( sle ) -ss , rheumatoid arthritis ( ra ) -ss , or connective tissue disease-ss .
C0151449
primary ss
C1527336
ss