Asherson R A, Benbow A G, Speirs C J, Jackson N, Hughes G R
Ann Rheum Dis. 1986 Sep;45(9):771-3. doi: 10.1136/ard.45.9.771.
A patient who developed pulmonary hypertension and systemic lupus erythematosus as a complication of hydralazine therapy is reported. She was a slow acetylator and in addition was found to have a null allele at the C4A locus.