Table 2.

Neutropenia and FcγR Polymorphisms in 24 Patients Receiving Two Courses of Rituximab

Neutropenia	FcγR IIIa Polymorphism			FcγR IIa Polymorphism
	V/V (n = 3)	V/F (n = 9)	F/F (n = 12)	H/H (n = 7)	H/R (n = 11)	R/R (n = 6)
No neutropenia*	1	3	9	4	5	4
Neutropenia in one course	0	4	3	1	4	2
Neutropenia in both courses	2	2	0	2	2	0
Mean	1.33	0.89	0.25	0.77	0.72	0.33
Spearman rank correlation
r	0.495			0.140
P	.014			.520

^*Grade 3 or 4 (absolute neutrophil count < 1,000/μL).