Safety and Immunogenicity of PCV20 in Pediatric Patients With Autoimmune Rheumatic Diseases

Summary

This clinical trial evaluates the immunogenicity (humoral and cellular) and safety of the 20-valent pneumococcal conjugate vaccine (PCV20) in children, adolescents, and young adults aged 2-25 years with autoimmune rheumatic diseases (ARDs). All participants will receive PCV20 according to prior vaccine history. Antibody titers, opsonophagocytic activity, cellular immune responses, and adverse events will be measured up to 6 months post-vaccination. Effects of immunosuppressive therapy and physical activity levels related vaccine response will also be assessed.

Timeline

Start

2026-01-16

Primary completion

2026-12-30

Completion

2027-12-30

Publications

• Background Kobayashi M, Bennett NM, Gierke R, Almendares O, Moore MR, Whitney CG, Pilishvili T. Intervals Between PCV13 and PPSV23 Vaccines: Recommendations of the Advisory Committee on Immunization Practices (ACIP). MMWR Morb Mortal Wkly Rep. 2015 Sep 4;64(34):944-7. doi: 10.15585/mmwr.mm6434a4.
• Background Jensen L, Christensen AE, Nielsen S, Pedersen FK, Rosthoj S, Jorgensen CS, Poulsen A. Response to pneumococcal conjugate and polysaccharide vaccination in children with rheumatic disease. Scand J Immunol. 2022 Feb;95(2):e13118. doi: 10.1111/sji.13118. Epub 2021 Nov 22.
• Background Aikawa NE, Franca IL, Ribeiro AC, Sallum AM, Bonfa E, Silva CA. Short and long-term immunogenicity and safety following the 23-valent polysaccharide pneumococcal vaccine in juvenile idiopathic arthritis patients under conventional DMARDs with or without anti-TNF therapy. Vaccine. 2015 Jan 29;33(5):604-9. doi: 10.1016/j.vaccine.2014.12.030. Epub 2014 Dec 29.
• Background Aikawa NE, Campos LM, Goldenstein-Schainberg C, Saad CG, Ribeiro AC, Bueno C, Precioso AR, Timenetsky Mdo C, Silva CA, Bonfa E. Effective seroconversion and safety following the pandemic influenza vaccination (anti-H1N1) in patients with juvenile idiopathic arthritis. Scand J Rheumatol. 2013;42(1):34-40. doi: 10.3109/03009742.2012.709272. Epub 2012 Sep 20.
• Background Aikawa NE, Campos LM, Silva CA, Carvalho JF, Saad CG, Trudes G, Duarte A, Miraglia JL, Timenetsky Mdo C, Viana VS, Franca IL, Bonfa E, Pereira RM. Glucocorticoid: major factor for reduced immunogenicity of 2009 influenza A (H1N1) vaccine in patients with juvenile autoimmune rheumatic disease. J Rheumatol. 2012 Jan;39(1):167-73. doi: 10.3899/jrheum.110721. Epub 2011 Nov 15.

Drugs

Indications