C9 and tuberculosis: In another study, analysis by aptamer-based SOMAscan assays identified a 6-protein panel comprising cytoplasmic tryptophan-tRNA ligase (SYWC), kallistatin, C9, gelsolin, testican-2, and aldolase C (16), which could distinguish TB from non-TB samples with a similar sensitivity and specificity to our panel, though limited data were available regarding the patients that made up the non-TB group.