HMGB1 and triple-A syndrome: In line with previous research, we also found that elevated serumHMGB2 and HMGB1 levels were independently associated with the incidence of AAA.Our study is the first to report that serum HMGB2 levels were positivelycorrelated with AAA diameter, with incremental increases in AAA diametercorresponding to elevated HMGB2 levels.