Jäger Jäger U U Inhibition of complement C1s improves severe hemolytic anemia in cold agglutinin disease: a first-in-human trial Inhibition of complement C1s improves severe hemolytic anemia in cold agglutinin disease: a first-in-human trial Blood Blood 2019 2019 133 133 9 9 893 893 901 901 supplied-pmid 30559259? The gene discussed is C1S; the disease is cold agglutinin disease.