Objectives: To determine the correlation between cardiovascular risk calculated using the Framingham equation and the circulating levels of 4 'emerging'predictors of vascular events: fibrinogen (Fib), lipoprotein (a) (Lp(a)), albumin (Alb) and bilirubin (Bil) (F-L-A-B).
Patients and methods: A retrospective survey was carried out using patients referred to a specialist university-based clinic. A total of 376 patients with primary dyslipidaemia (209 men), without overt vascular disease, had their cardiovascular risk estimated using the Framingham equation.
Results: Among the men, smokers (n=45) were significantly younger (p =0.014) than non-smokers (n=164). Smokers when compared with non-smokers had significantly higher median Fib levels (3.84 (1.15-5.87) vs. 3.08 (1.44-5.47) g/l; p<0.0001) and lower median Bil levels (8 (3-17) vs. 10 (1-28) micromol/l; p=0.016). When non-smoker men without clinically evident vascular disease were considered, there was a significant positive Fib and negative Alb correlation with calculated risk, whether the family history was considered or not. Moreover in smokers, the only significant correlation was a negative one between Bil and cardiovascular disease risk. Lp(a) correlated with risk for stroke in women non-smokers whether the family history was considered or not, while Alb correlated with risk for stroke in women non-smokers without family history.
Conclusion: Fib, Lp(a), Alb and Bil (F-L-A-B) may be predictors of vascular events in high-risk populations. Prospective studies should evaluate whether the F-L-A-B markers are useful in the assessment of cardiovascular risk load. Such an advantage would make treatment more cost effective by improving patient targeting. The F-L-A-B markers could eventually become targets for new drugs.