Expression of Myeloid Antigen in Neoplastic Plasma Cells Is Related to Adverse Prognosis in Patients with Multiple Myeloma

Table 3

Multivariate regression analysis of factors significantly associated with PFS and OS.

Variables	PFS			OS
	HR	95% CI	𝑃	HR	95% CI	𝑃
CD13+	3.46	0.8–14.8	0.093	2.77	0.4–17.7	0.283
CD33+	3.86	1.1–13.7	0.037	13.8	3.1–61.3	0.001
β2-Microglobulin > 3.5 mg/dL	6.93	2.0–24.1	0.002	4.02	1.0–16.7	0.055
LDH > 202 U/L	1.84	0.5–6.9	0.370	2.88	0.6–14.2	0.195
Age ≥ 65 years	0.40	1.1–0.1	0.076	1.50	0.5–4.6	0.481
t(4;14)	0.51	0.1–2.2	0.368	1.21	0.2–6.4	0.823

PFS: progression free survival; OS: overall survival; HR: hazard ratio; CI: confidence interval.