Higher estimated risk for clonal hematopoiesis of indeterminate potential seen for those with ischemic but not hemorrhagic stroke Radon exposure is associated with an increased risk for clonal hematopoiesis of indeterminate potential (CHIP) among postmenopausal women with ischemic stroke, according to a study published online Jan. 3 in Neurology. Kurtis M. Anthony, M.P.H., from the Gillings...