Table 1

Clinical characteristics of participants with rheumatic and musculoskeletal diseases who withheld perivaccination mycophenolate

Participant	Age	Sex	Race	Diagnosis	Vaccine type	Mycophenolate dose	Number of doses held	Concurrent therapy	Antibody titre *	Flare
1	36	M	White	CT-ILD†	Moderna	2000 mg	3	No	>250	No
2	62	F	White	CT-ILD†	Pfizer	500 mg	88	Prednisone	>250	No
3	19	F	White	IA‡	Pfizer	1000 mg	5	Abatacept	16	Yes
4	58	F	White	IA‡	Pfizer	2000 mg	28	Tofacitinib	>250	No
5	46	F	White	Myositis	J+J	2000 mg	NA	Prednisone	82	No
6	53	F	White	Myositis	J+J	2500 mg	56	Prednisone	206	No
7	46	F	White	Myositis	Pfizer	3000 mg	20	IVIG§, HCQ¶	40	No
8	54	F	White	Myositis	Pfizer	3000 mg	NA	No	<0.40	No
9	35	F	White	Myositis	Moderna	3000 mg	24	No	>250	No
10	71	F	White	Overlap CTD**	Moderna	2000 mg	4	Rituximab	9.0	No
11	58	F	White	Overlap CTD**	Moderna	2000 mg	9	HCQ¶, Prednisone	8	No
12	55	F	White	Overlap CTD**	Moderna	2000 mg	30	HCQ¶, Prednisone	8	No
13	64	F	White	Overlap CTD**	Pfizer	500 mg	38	No	>250	No
14	70	M	White	Scleroderma	Moderna	3000 mg	42	Rituximab	<0.40	Yes
15	36	F	White	Scleroderma	Pfizer	3000 mg	14	No	35	No
16	40	F	White	Scleroderma	Pfizer	2500 mg	28	No	244	No
17	42	F	White	Scleroderma	Pfizer	3000 mg	8	Abatacept	22	No
18	63	F	White	Sjogren’s	Pfizer	2500 mg	NA	No	12	No
19	49	F	White	SLE††	J+J	3000 mg	13	No	>250	No
20	54	F	White	SLE††	Moderna	1000 mg	10	HCQ‡	>250	No
21	50	F	Black	SLE††	Pfizer	3000 mg	98	Belimumab, Prednisone	>250	No
22	31	F	White	SLE††	Pfizer	2000 mg	10	HCQ‡, Prednisone	80	No
23	38	F	White	SLE††	Pfizer	1500 mg	20	Prednisone	168	No
24	51	F	White	SLE††	Moderna	1000 mg	5	Abatacept	>250	No

*The assay ranges from<0.4 to >250 units/mL. Positive antibody was defined as an anti-SARS-CoV-2 receptor binding domain antibody titre>0.79 units/mL.
†Denotes connective tissue disease-related ILD.
‡Rheumatoid arthritis, ankylosing spondylitis, psoriatic arthritis, reactive arthritis, or inflammatory bowel disease-associated arthritis.
§Intravenous immunoglobulin.
¶Hydroxychloroquine.
**Denotes a combination of two or more of the rheumatic conditions.
††Systemic lupus erythematosus.