Key clinical point: Low levels of von Willebrand Factor and blood group O were not associated with a first intracerebral hemorrhage.
Major finding: The researchers found no association between blood group O and the risk of ICH.
Study details: A prospective, population-based study of 176 ICH cases and 349 age- and sex-matched controls.
Disclosures: The study was funded by public institutions in Sweden. The authors declared that they had no conflicts.
Johansson K et al. Thromb Res. 2020 Jul 5;195:77-80.