Partial C4 deficiency in two children with systemic lupus erythematosus
Systemic lupus erythematosus (SLE) is a rare disease in childhood.Here two cases with SLE are panc mix gheos presented, both with C4 null alleles yielding a functional C4 deficiency.The first case, a 14-year-old girl with a C4A null allele only, had a mild disease course, whereas the second child, a seven-year-old boy with both C4A0 and C4B0, had a