“In cats with multiple myeloma and other related disorders, the degree of plasma cell differentiation is significantly correlated with survival. Cats with well-differentiated tumors (< 15% plasmablasts) have a median survival of 254 days, whereas cats with poorly differentiated tumors (≥ 50% plasmablasts) have a median survival of 14 days.”

—Rachel Sternberg, DVM; Jackie Wypij, DVM, DACVIM (oncology); and Anne M. Barger, DVM, DACVP

From An overview of multiple myeloma in dogs and cats