PMID- 33175600 OWN - NLM STAT- MEDLINE DCOM- 20210705 LR - 20210705 IS - 2164-554X (Electronic) IS - 2164-5515 (Print) IS - 2164-5515 (Linking) VI - 17 IP - 5 DP - 2021 May 4 TI - Safety, reactogenicity, and immunogenicity of a 12-valent pneumococcal non-typeable Haemophilus influenzae protein D-conjugate vaccine in healthy toddlers: results from a phase I, randomized trial. PG - 1463-1469 LID - 10.1080/21645515.2020.1810493 [doi] AB - As a stepping stone toward evaluation in infants, the safety and immunogenicity of an investigational 12-valent pneumococcal non-typeable Haemophilus influenzae protein D-conjugate vaccine (12vPHiD-CV) was assessed in toddlers. 12vPHiD-CV contains CRM(197)-conjugated capsular polysaccharides of serotypes 6A and 19A in addition to capsular polysaccharides of the 10 serotypes in PHiD-CV. In this phase I, double-blind, multicenter study (NCT01485406) conducted in Germany, 61 healthy toddlers aged 12-23 months previously primed with three PHiD-CV doses were randomized (1:1) to receive one dose of 12vPHiD-CV or PHiD-CV. Safety and reactogenicity of 12vPHiD-CV were assessed in terms of occurrence of grade 3 vaccination-related solicited and unsolicited adverse events (AEs) and vaccination-related serious AEs. Immune responses were evaluated 1 month post-vaccination. Grade 3 solicited local AEs (all considered vaccination-related) were reported for two (6.5%, redness) and three (9.7%, swelling) toddlers in the 12vPHiD-CV group and one (3.4%, swelling) in the PHiD-CV group. Grade 3 vaccination-related solicited general AEs were only reported in the PHiD-CV group. No grade 3 unsolicited or serious AEs were reported. For PHiD-CV serotypes, 100% of toddlers in both groups had antibody concentrations >/=0.2 microg/mL 1 month post-vaccination, and antibody geometric mean concentrations increased from pre-boosting. For serotypes 6A and 19A, antibody responses tended to be higher in the 12vPHiD-CV than the PHiD-CV group. A single dose of 12vPHiD-CV administered in toddlers was well tolerated and no safety concerns were identified. Immune responses were comparable to those induced by PHiD-CV when administered in toddlers previously primed with three doses of PHiD-CV. FAU - Horn, Michael AU - Horn M AUID- ORCID: 0000-0002-4699-5969 AD - Pediatric Office, Schonau Am Konigssee, Germany. FAU - Behre, Ulrich AU - Behre U AD - Private Practice, Kehl, Germany. FAU - Traskine, Magali AU - Traskine M AD - HPV, Hepatitis and Pneumococcal Vaccines, Clinical R&D, GSK, Wavre, Belgium. FAU - Dobbelaere, Kurt AU - Dobbelaere K AUID- ORCID: 0000-0002-5426-2626 AD - HPV, Hepatitis and Pneumococcal Vaccines, Clinical R&D, GSK, Wavre, Belgium. FAU - Borys, Dorota AU - Borys D AUID- ORCID: 0000-0001-9704-8462 AD - HPV, Hepatitis and Pneumococcal Vaccines, Clinical R&D, GSK, Wavre, Belgium. LA - eng SI - ClinicalTrials.gov/NCT01485406 PT - Clinical Trial, Phase I PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20201111 PL - United States TA - Hum Vaccin Immunother JT - Human vaccines & immunotherapeutics JID - 101572652 RN - 0 (Antibodies, Bacterial) RN - 0 (Pneumococcal Vaccines) RN - 0 (Vaccines, Conjugate) SB - IM MH - Antibodies, Bacterial MH - Child, Preschool MH - Germany MH - *Haemophilus influenzae MH - Humans MH - Immunogenicity, Vaccine MH - Infant MH - *Pneumococcal Infections MH - Pneumococcal Vaccines MH - Vaccines, Conjugate PMC - PMC8078718 OTO - NOTNLM OT - PHiD-CV OT - Pneumococcal conjugate vaccine OT - booster dose OT - immunogenicity OT - safety OT - toddlers COIS- MT and DB are employed by the GSK group of companies. KD was employed by the GSK group of companies. DB and KD hold shares in the GSK group of companies. MH received a grant from the GSK group of companies for study conduct. UB has nothing to disclose. EDAT- 2020/11/12 06:00 MHDA- 2021/07/06 06:00 PMCR- 2020/11/11 CRDT- 2020/11/11 17:12 PHST- 2020/11/12 06:00 [pubmed] PHST- 2021/07/06 06:00 [medline] PHST- 2020/11/11 17:12 [entrez] PHST- 2020/11/11 00:00 [pmc-release] AID - 1810493 [pii] AID - 10.1080/21645515.2020.1810493 [doi] PST - ppublish SO - Hum Vaccin Immunother. 2021 May 4;17(5):1463-1469. doi: 10.1080/21645515.2020.1810493. Epub 2020 Nov 11.