Hos en lille procentdel af de cancerpatienter, der deltager i visse studier med Zevalin, er der blevet indberettet andre typer cancer, der relateres til blodet: myelodysplasi eller akut myeloid leukæmi (AML), som endda kan medføre døden.
In a small percentage of cancer patients participating in certain Zevalin studies, other types of cancer have been reported that relate to the blood: myelodysplastic syndrome or acute myeloid leukaemia (AML), which can even lead to death.