Ornek E, et al. – Study authors explored the link between mean platelet volume–to–lymphocyte ratio (MPVLR) and coronary collateral circulation (CCC) development in patients with stable angina pectoris undergoing coronary arteriography. Findings indicated that measurement of MPVLR might predict the development of CCC in this population. In these patients, an independent association of increased MPVLR with impaired CCC was obvious.