title: The effect of anti-TNF treatment on the immunogenicity and safety of the 7-valent conjugate pneumococcal vaccine in children with juvenile idiopathic arthritis.
abstract: Our aim was to study the effect of anti-TNF treatment on immunogenicity and safety of the 7-valent conjugate pneumococcal vaccine in children with juvenile idiopathic arthritis. Thirty-one children (mean age:12.9+/-4.6 years) treated with anti-TNFs plus Disease Modifying Anti-Rheumatic Drugs (DMARDs) and 32 age-matched children treated only with DMARDs were vaccinated with two doses of PCV7. After the first vaccine dose geometric mean titers (GMTs) were significantly increased for all vaccine serotypes (p<0.0001) in both groups and were found to be protective (>0.35microg/ml) in 87-100% of all children, depending on the serotype. Children receiving anti-TNFs achieved a significantly lower GMTs against serotypes 4, 14 and 23F (p<0.05). A >or=4-fold increase of the baseline titers to >or=5 vaccine serotypes was observed in 50% and 75% of the anti-TNF and control patients, respectively (p=0.0697). No patient developed vaccine-associated serious adverse events or disease flares.
authors.affiliation: 1st Department of Pediatrics, Pediatric Immunology and Rheumatology Referral Center, Hippokration General Hospital, Aristotle University of Thessaloniki, 49 Konstantinoupoleos St., 54642 Thessaloniki, Greece. farmakg@med.auth.gr
authors.forename: Evangelia
authors.initials: E
authors.lastname: Farmaki
authors.forename: Florentia
authors.initials: F
authors.lastname: Kanakoudi-Tsakalidou
authors.forename: Vana
authors.initials: V
authors.lastname: Spoulou
authors.forename: Maria
authors.initials: M
authors.lastname: Trachana
authors.forename: Polyxeni
authors.initials: P
authors.lastname: Pratsidou-Gertsi
authors.forename: Maria
authors.initials: M
authors.lastname: Tritsoni
authors.forename: Maria
authors.initials: M
authors.lastname: Theodoridou
mesh_terms: D000293:Adolescent; D000907:Antibodies, Bacterial / Q000097:blood; D018501:Antirheumatic Agents / Q000627:therapeutic use*; D001171:Arthritis, Juvenile / Q000188:drug therapy* / Q000276:immunology; D002648:Child; D002675:Child, Preschool; D016572:Cyclosporine / Q000627:therapeutic use; D005260:Female; D000069443:Heptavalent Pneumococcal Conjugate Vaccine; D006801:Humans; D008297:Male; D008727:Methotrexate / Q000627:therapeutic use; D022242:Pneumococcal Vaccines / Q000009:adverse effects / Q000276:immunology*; D011241:Prednisone / Q000627:therapeutic use; D014409:Tumor Necrosis Factor-alpha / Q000037:antagonists & inhibitors*; D018074:Vaccines, Conjugate / Q000009:adverse effects / Q000276:immunology
chemical_list: D000907:Antibodies, Bacterial; D018501:Antirheumatic Agents; D000069443:Heptavalent Pneumococcal Conjugate Vaccine; D022242:Pneumococcal Vaccines; D014409:Tumor Necrosis Factor-alpha; D018074:Vaccines, Conjugate; D016572:Cyclosporine; D011241:Prednisone; D008727:Methotrexate