Table 2.

Answers refer to the time and frequency of IgG levels monitor, and management for the hypogammaglobulinemia patients.

Question	Answers	N (%)
When would you typically check IgG levels in a patient with CLL?	At diagnosis	18 (37.50)
	At treatment initiation	3 (6.25)
	Regularly (e.g., every 3 months or annually)	22 (45.83)
	If an infectious complication arises	1 (2.08)
	Never or rarely	1 (2.08)
	I do not manage patients with CLL	1 (2.08)
	Other (please specify)	2 (4.17)
Do you routinely check uninvolved immunoglobulin subtypes in your patients with myeloma to look for hypogammaglobulinemia?	Routinely, on a regular basis (e.g., every 3 months or annually)	33 (68.75)
	Routinely, at diagnosis only	3 (6.25)
	Only in the event of an infectious complication	2 (4.17)
	Never or rarely	6 (12.50)
	I do not manage patients with myeloma	1 (2.08)
	Other (please specify)	1 (2.08)
What treatments do you use to prevent infections in secondary hypogammaglobulinemia? (check all that apply)	Intravenous immunoglobulin replacement	34 (70.83)
	Subcutaneous immunoglobulin replacement	1 (2.08)
	Pneumococcal vaccination	1 (2.08)
	Prophylactic antibiotics	5 (10.42)
	None	10 (20.83)
	Other (please specify)	0 (0)

CLL = chronic lymphocytic leukemia.