ICAM1 and ischemic stroke: Clinical studies have shown increased expression of ICAM‐1 in brain and increased circulating levels of soluble ICAM‐1 and cerebrospinal fluid ICAM‐1 following ischemic stroke (Bitsch, Klene, Murtada, Prange, & Rieckmann, 1998; Deng et al., 2005; Ferrarese et al., 1999; Love & Barber, 2001).