Table 2.

Anti-spike IgG levels.

	Total MMa patients	IgA MM patients	IgG MM patients	Light chain MM patients	Otherb MM patients	SMMc patients	Healthy controls	Pre-COVID-19 controls
Number of subjects	96	18	48	24	6	7	31	34
Anti-spike IgG levels (IU/mL)
Baseline median	7.28	8.35	5.79	7.96	12.06	22.25	30.50	21.85
Baseline standard deviation	13.83	8.84	15.40	15.31	6.62	11.48	137.84	11.38
D1 median	11.58	12.27	7.91	14.45	63.83	42.48	117.25	N/A
D1 standard deviation	297.25	49.24	417.86	51.17	36.51	81.66	584.38	N/A
D2 median	173.72	304.16	136.02	178.87	2077.77	555.78	893.6	N/A
D2 standard deviation	1653.32	1883.30	1793.42	530.06	2614.65	1245.66	1474.76	N/A

NA not applicable.

^aMultiple myeloma.

^bTwo IgM, IgD, and nonsecretory patients each.

^cSmoldering multiple myeloma.