Open Access

Table II

Summary of studies comparing risk of postoperative infection in patients on biological therapy [9, 1138].

Study Population Sample size Biologic therapy Type of surgery Comparator groups Results
Abou Zahr et al.20 (2015) Rheumatoid arthritis 896 Various Various Continued TNF⍺ inhibitor
Discontinued TNF⍺ inhibitor
Increased infection rates with continued biologics but did not reach statistical significance
Bafford et al.21 (2013) Crohn's disease 196 Various Abdominal Preoperative biologic use
No preoperative biologic use
Similar infection rates
Bakkour et al.10 (2016) Psoriasis, psoriatic arthritis 42 ADA, ETN, INF Orthopaedic, cardiovascular, skin Continued biologic therapy
Interruption to biological therapy
Similar infection rates
Bibbo et al.22 (2004) Rheumatoid arthritis 31 ETN, INF Orthopaedic Continued TNF⍺ inhibitor
Discontinued TNF⍺ inhibitor
Similar infection rates
Bongartz et al.23 (2008) Rheumatoid arthritis 50 ETN, INF, ADA Orthopaedic Continued TNF⍺ inhibitor
Discontinued TNF⍺ inhibitor
Similar infection rates
den Broeder et al.24 (2007) Rheumatoid arthritis 196 ETN, INF, ADA Orthopaedic Continued TNF⍺ inhibitor
Discontinued TNF⍺ inhibitor
Similar infection rates but increased risk of wound healing complication with continued biologics (OR 11.2, 95% CI 1.4-90)
Cohen et al.25 (2019) Inflammatory bowel disease 955 Various Abdominal Biologic use within 12 weeks of surgery/detectable anti-TNF levels
No biologic use within 12 weeks of surgery/undetectable anti-TNF levels
Similar infection rates
Gainsbury et al.26 (2011) Ulcerative colitis 81 INF Abdominal Continued TNF⍺ inhibitor
Discontinued TNF⍺ inhibitor
Similar infection rates
George et al.6 (2017) Rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, inflammatory bowel disease 4288 INF Orthopaedic Continued TNF⍺ inhibitor
Discontinued TNF⍺ inhibitor
Similar infection rates
George et al.27 (2018) Rheumatoid arthritis 1537 ABT Orthopaedic Continued TNF⍺ inhibitor
Discontinued TNF⍺ inhibitor
Similar infection rates
Giles et al.28 (2006) Rheumatoid arthritis 91 ETN, INF, ADA Orthopaedic Continued TNF⍺ inhibitor
Continued conventional DMARDs
Increased risk of infection with continued biologics (p<0.05) OR 5.3 CI 1.1-24.9
Godot et al.29 (2013) Rheumatoid arthritis 140 RTX Various Postoperative complications
No postoperative complications
Similar infection rates
Hirano et al.30 (2009) Rheumatoid arthritis 44 TCZ Orthopaedic Continued TNF⍺ inhibitor
Continued conventional DMARDs
Similar infection rates
Hirano et al.31 (2010) Rheumatoid arthritis 113 ETN, INF Orthopaedic Discontinued TNF⍺ inhibitor
Continued conventional DMARDs
Similar infection rates
Holubar et al.32 (2021) Inflammatory bowel disease 1562 Various Abdominal Biologic use within 60 days of surgery
No biologic use within 60 days of surgery
Similar infection rates
Kawakami et al.33 (2010) Rheumatoid arthritis 128 ETN, INF Orthopaedic Continued TNF⍺ inhibitor
Continued conventional DMARDs
Increased risk of infection with continued biologics (p<0.05) OR 21.8 CI 1.23-386.1
Kim et al.34 (2018) Ulcerative colitis 315 Various Abdominal Preoperative biologic use
No preoperative biologic use
Similar infection rates
Kubota et al.35 (2012) Rheumatoid arthritis 554 INF, ETN, ADA, TCZ Orthopaedic Patients on biological therapy
Patients not on biological therapy
Similar infection rates
Kunitake et al.36 (2008) Crohn's disease, ulcerative colitis 413 INF Abdominal Continued TNF⍺ inhibitor
Discontinued TNF⍺ inhibitor
Similar infection rates
Kulaylat et al.37 (2021) Crohn's disease 2364 Various Abdominal Biological therapy
No biological therapy
Increased postoperative infection (OR 1.6; 95% CI, 1.2– 2.0)
Latourte et al.38 (2017) Rheumatoid arthritis 263 ABT Various Postoperative complications
No postoperative complications
Similar infection rates
Lau et al.7 (2015) Inflammatory bowel disease 331 INF, ADA, CTZ Abdominal Total serum level of TNFα inhibitor drug detected ≥ 0.98 µg/mL Infectious complications significantly higher in the ≥ 3 µg/mL group (OR = 3.0, P = 0.03)
Marchal et al.39 (2004) Crohn's disease 79 INF Abdominal Continued TNF⍺ inhibitor
Discontinued TNF⍺ inhibitor
Similar infection rates
Mitsuya et al.40 (2019) Inflammatory bowel disease 62 INF, ADA, VDZ Abdominal Preoperative biologic use
No preoperative biologic use
Similar infection rates
Momohara et al.41 (2011) Rheumatoid arthritis 420 ENT, INF, ADA Orthopaedic Continued TNF⍺ inhibitor
Continued conventional DMARDs
Increased risk of infection with continued biologics (p<0.05) OR 5.69 CI 2.07-15.6
Ruyssen-Witrand et al.42 (2005) Rheumatoid arthritis, spondyloarthropathies, other 101 ETN, INF, ADA Orthopaedic, abdominal, gynaecological Discontinued TNF⍺ inhibitor <2 HL
Discontinued TNF⍺ inhibitor 2-5 HL
Discontinued TNF⍺ inhibitor >5 HL
Increased infection rates with continued biologics but did not reach statistical significance
Talwalker et al.43 (2005) Rheumatoid arthritis, psoriatic arthritis 16 ETN, INF, ADA Orthopaedic Continued TNF⍺ inhibitor
Discontinued TNF⍺ inhibitor
Similar infection rates
Waterman et al.44 (2013) Inflammatory bowel disease 473 Various Abdominal Preoperative biologic use
No preoperative biologic use
Similar infection rates
Wendling45 (2007) Rheumatoid arthritis 50 ETN, INF, ADA Orthopaedic, abdominal, head and neck Continued TNF⍺ inhibitor
Discontinued TNF⍺ inhibitor
Similar infection rates

ABT = abatacept, ADA = adalimumab, CTZ = certolizumab pegol, ETN = etanercept, HL = half-life, INF = infliximab, OR = odds ratio, RTX = rituximab, TCZ = tocilizumab, VDZ = vedolizumab.

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