Final answer:
Basophilia can be a sign of myeloproliferative disease, specifically CML.
Step-by-step explanation:
Basophilia is uncommon but can be a sign of myeloproliferative disease, particularly Chronic Myeloid Leukemia (CML). Basophils are a type of white blood cell that are involved in the inflammatory response. In certain diseases like CML, abnormal production and activation of basophils can occur, leading to an increase in their count in the blood. Therefore, the statement is true.