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. 2022 Jan 22;9(1):35–47. doi: 10.1007/s40472-022-00359-0

Table 1.

Humoral response to two doses of SARS-CoV-2 vaccine in solid organ transplant recipients

Organ transplanted, number of patients Type of vaccine % Seropositive humoral response Associations with seronegative response Associations with seropositive response Adverse Events (AE) Time from second dose of vaccine
Bertrand et al. [35] Kidney, 45 BNT162b2 (Pfizer-BioNTech) 17.8%

Duration of kidney transplantation

and a cyclosporin-based immunosuppressive regimen

1 month
Boyarsky et al. [77]

Total = 436

Kidney, 219

Liver, 78

Heart, 66

Lung, 50

• BNT162b2 (Pfizer-BioNTech)

• mRNA-1273 (Moderna)

17.4%

18.7%

47.4%

18.2%

10%

Regimen includes anti-metabolite (OR = 0.22 (0.1–0.3))

Age (OR = 0.83 (0.7–0.9))

mRNA-1273 (OR = 2.1 (1.3–3.5)) compared to BNT162b2 20 days post first dose
Boyarsky et al. [78••]

Total = 658

Kidney, 322

Liver, 129

Heart, 97

Lung, 71

Pancreas, 5

• BNT162b2 (Pfizer-BioNTech)

• mRNA-1273 (Moderna)

54%

48%

80%

57%

39%

20%

Younger age

Type of vaccine (BNT162b2 > BNT162b2)

More years since transplantation

Organ transplanted

Maintenance includes anti-metabolite

28–31 days
Bruminhent et al. [79] Kidney, 35 Inactivated whole-virus SARS-CoV-2 vaccine 9%

Low-dose mycophenolic acid

Cyclosporine-based regimen

No serious AE 2 weeks
Crespo et al. [80] Kidney, 90 mRNA-1273 (Moderna) 63%  > 6 months after transplantation (OR 0.29 (0.08–1.0)) No serious AE 28 days
Cucchiari et al. [39•] Kidney, 117 mRNA-1273 (Moderna) 30% Combination Tacrolimus + mTOR inhibitors (OR 0.3 (0.09–0.8)) No serious AE 2 weeks
Grupper et al. [74] Kidney, 136 BNT162b2 (Pfizer-BioNTech) 37.5%

Older age (1.7 (1.2–2.7))

High-dose corticosteroids in the last 12 months (1.3 (1.09–1.8)),

Maintenance with triple immunosuppression (1.4 (1.06–2.1))

Regimen that includes mycophenolate (1.5 (1.3–2.3))

No serious AE 14–21 days
Grupper et al. [63••] Kidney, 128 BNT162b2 (Pfizer-BioNTech) 52%

Vaccination post-transplantation (22.4 (3.6–36))

Age (1.04 (1.01–1.1))

Time on dialysis ((1.02 (1.01–1.04))

Higher lymphocyte count ((0.52(0.3–0.9)) No serious AE 95 days after second dose
Guarino et al. [81] Liver, 365 BNT162b2 (Pfizer-BioNTech) 75%

Older age (> 65 years)

Higher BMI

Shorter time from transplantation

Immunosuppressive regimens (anti-metabolite, mTORS, 2 < Immunosuppressive medications)

No serious AE 4 weeks
Hallett et al. [82]

Heart, 134

Lung, 103

• BNT162b2 (Pfizer-BioNTech)

• mRNA-1273 (Moderna

62%

36%

Heart vs. lung transplant (1.55 (1.2–2.0))

Anti-metabolite maintenance immunosuppression (0.7 (0.5–0.8))

Younger age ((0.61 (0.4–0.9))

 > 6 years out from transplantation (1.22 (1.1–1.3))

No serious AE 28 days
Itzhaki Ben Zadok et al. [83] Heart, 37 BNT162b2 (Pfizer-BioNTech) 49%

Older age

Treatment with anti-metabolite-based protocols

No serious AE 35–40 days post first dose
Marion et al. [84•]

Total = 367

Kidney, 271

Liver, 58

Thoracic organs, 33

• BNT162b2 (Pfizer-BioNTech)

• mRNA-1273 (Moderna)

34%

33%

50%

12%

Most mild

1 acute cellular rejection in kidney recipient

28 days
Masset et al. [85•] Kidney, 456 BNT162b2 (Pfizer-BioNTech) 50%

Anti-metabolite

drugs (5.7 (3.0–11.5))

or steroids (3.6

(2.1–6.6))

Age (1.03 (

1.01–1.06))

Impaired allograft

function (0.98 (0.96–0.99))

Transplant < 4 years (2.9 (1.70–5.1))

1 month
Mazzola et al. [86]

Total = 133

Kidney, 59

Liver, 58

Heart, 26

BNT162b2 (Pfizer-BioNTech)

28.%

16.6%

37.5%

34.8%

Transplantation < 2 years (2.8 (1.06–7.7))

Diabetes (3.4 (1.3–8.5))

Kidney transplantation (4.0 (1.5–10.2))

No serious AE 28 days
Peled et al. [87] Heart, 77 BNT162b2 (Pfizer-BioNTech) 18% Mycophenolate use (0.12 (0.01–0.8)) No serious AE 28 days
Prendecki et al. [88••] Kidney, 920

• ChAdOx1 (Oxford University–AstraZeneca)

• BNT162b2 (Pfizer-BioNTech)

Pfizer 66%

Astra zeneca 44%

 < 1 year after transplant (0·2 0.15–0·5))

Diabetes (0·6 (0·4–0·9))

Vaccination with BNT162b2 (2.4 (1.7–3.4))

Tacrolimus monotherapy (5.2 (3.6–7.6))

31 days
Rabinowich et al. [89] Liver, 80 BNT162b2 (Pfizer-BioNTech) 47%

Age (1.3 (1.1–1.9))

Lower eGFR (0.8 (0.4–0.9))

High-dose prednisone in the past 12 months (1.8 (1.5–4.6))

Triple therapy immunosuppression (1.7 (1.2–2.5))

Low-dose steroids (1.5 (0.9–4.1))

MMF (1.8 (1.1–3.5))

No serious AE 10–20 days
Rashidi-Alavijeh et al. [90] Liver, 43 BNT162b2 (Pfizer-BioNTech) 79% MMF treatment 15 days
Rozen-Zvi et al. [91] Kidney, 308 BNT162b2 (Pfizer-BioNTech) 36%

eGFR (1.02 (1.01–1.04))

Lower mycophenolic acid dose (2.3 (1.8–3.1))

Younger age (1.03 (1.01–1.05))

Lower calcineurin inhibitor blood level (1.9 (1.1–3.4))

No serious AE 2–4 weeks
Sattler et al. [34•] Kidney, 39 BNT162b2 (Pfizer-BioNTech) 8.3% No significant associations No serious AE 24 days
Shostak et al. [92] Lung, 168 BNT162b2 (Pfizer-BioNTech) 18%

Age (0.9 (0.92–0.98))

Use of antimetabolites (0.2 (0.08–0.8))

Use of mTOR (0.1 (0.02–0.99))

No serious AE 14–21 days
Strauss et al. [93] Liver, 161

• BNT162b2 (Pfizer-BioNTech)

• mRNA-1273 (Moderna)

81% Antimetabolites (0.6 (0.5–0.8)) mRNA-1273 (1.25 (1.09–1.4)) 30 days
Stumpf et al. [36•] Kidney, 368

• BNT162b2 (Pfizer-BioNTech)

• mRNA-1273 (Moderna)

42%

Age (1.02 (1.008–1.04))

Time since transplantation (0.9 (0.91–0.98))

Number of immunosuppressive drugs (2.0 (1.3–3.1))

mRNA-1273 v (0.35 (0.2–0.6)) compared to BNT162b2

Most mild,

1.6% hospitalization due to side effects

8 weeks post first dose
Thuluvath et al. [94] Liver, 62

• Johnson & Johnson

• BNT162b2 (Pfizer-BioNTech)

• mRNA-1273 (Moderna)

39%

Use of 2–3 immunosuppressive medications (14.4 (5–40.7))

Vaccination with a single dose of Johnson & Johnson

Vaccine (0.02 (0.01–0.1) compared to Moderna

0.06 (0.02–0.24 compared to Pfizer)

No serious AE 28 days