Can chemotherapy cause thrombocytopenia?

Yes: Thrombocytopenia, or low platelet count, is commonly caused by chemotherapy.

Yes: Supression to bone marrow resulting in anemia, low white blood cells, low platelet ( Rituxan (rituximab) ) - is one of the most common possible adverse events of chemotherapy= severity of problem will depend on the type of chemo. Some biological therapy may or may not cause thrombocytopenia.