Immunogenicity After Revaccination With 23-valent Pneumococcal Polysaccharide Vaccine: Healthy Elderly People Versus Diabetic Patients

NCT04875858 | Unknown Phase 4

• 1 other identifier: 2020GR0143
• Study Type: interventional
• Target: 254
• Locations: 1 country
• Sites: 1

Brief Summary

Pneumococcal disease causes thousands of infections, such as meningitis, bloodstream infections, pneumonia, and ear infections in US annually. As pneumococcal vaccines provide serotype-specific protection, it is important to induce sufficient immune responses for the most clinically relevant serotypes. All adults aged 65 years or older are recommended to receive PPSV23 vaccination irrespective of underlying medical conditions. Thus, since May 2013, South Korea introduced PPSV23 in the national immunization program for elderly individuals aged ≥65 years. Following PPSV23 vaccination, serotype-specific IgG concentrations and OPA titers increase and then decline over time thereby decreasing protective efficacy, although these might remain above pre-vaccination levels until 5 years from PPSV23 administration. The decline of pneumococcal immunity may be more prominent among chronically ill patients, including those with diabetes. Currently however, revaccination is not recommended. In this study, we aimed to evaluate the serotype specific immunogenicity between healthy elderly people and old adults with diabetes after revaccination with PPSV23 at the age of 70-75 years. Serotype-specific IgG concentrations and opsonophagocytic killing activity (OPA) titers will be assessed.

Conditions

Pneumococcal Infections

Keywords

Streptococcus pneumoniae; Diabetes Mellitus; Immunogenicity, Vaccine; Pneumococcal Vaccines

Outcome Measures

Primary Outcomes (1)

• Serotype-specific immunogenicity assessed by opsonophagocytic killing assay.

  After PPSV23 vaccination, blood samples (10 mL) will be collected before vaccination and at 4 weeks post-vaccination. Serotype-specific opsonophagocytic activity (OPA) will be evaluated from those blood samples by opsonophagocytic killing assay for 4 serotypes (5, 6B, 18C, 19A).

  up to one month after vaccination

Secondary Outcomes (2)

• Serotype-specific IgG antibody concentrations assessed by ELISA.

  up to one month after vaccination

• Number of participants with treatment-related adverse events as assessed by CTCAE v4.0

  up to one month after vaccination

Study Arms (2)

healthy old adults aged 70-75 years who received PPSV23

ACTIVE COMPARATOR

Recruitment of 254 healthy 70-75-year healthy old adults who meet the selection and exclusion criteria and voluntarily agree to participate in this study. Vaccination -Based on guidelines for vaccination. Injecting muscles on the triceps Visit 4 weeks after vaccination ․ Blood sample collection for evaluation of immunogenicity (10 mL) ․ Comparison of GMT and seroconversion rates of IgG antibody titers against 13 pneumococcal serotypes (serotypes 1, 3, 4, 5, 6B, 7F, 9V, 14, 18C, 19A, 19F, 22F and 23F) -Comparison of GMT and seroconversion rates of opsonophagocytic killing assay (OPA) for four pneumococcal serotypes (serotypes 5, 6B, 18C, 19A)

Drug: ProDiax-23 (PPSV23)

old adults who have diabetes mellitus aged 70-75 years who rec

EXPERIMENTAL

Recruitment of 254 healthy 70-75-year diabetic old adults who meet the selection and exclusion criteria and voluntarily agree to participate in this study. Vaccination -Based on guidelines for vaccination. Injecting muscles on the triceps Visit 4 weeks after vaccination ․ Blood sample collection for evaluation of immunogenicity (10 mL) ․ Comparison of GMT and seroconversion rates of IgG antibody titers against 13 pneumococcal serotypes (serotypes 1, 3, 4, 5, 6B, 7F, 9V, 14, 18C, 19A, 19F, 22F and 23F) -Comparison of GMT and seroconversion rates of opsonophagocytic killing assay (OPA) for four pneumococcal serotypes (serotypes 5, 6B, 18C, 19A)

Drug: ProDiax-23 (PPSV23)

Interventions

ProDiax-23 (PPSV23) DRUG

diabetic old adults aged 70-75 years who received PPSV23 in previous 5-7 years (Persons 65-70 years old who have been inoculated with PPSV23 and 5-7 years have passed) and healthy old adults aged 70-75 years who received PPSV23 in previous 5-7 years (Persons 65-70 years old who have been inoculated with PPSV23 and 5-7 years have passed)

healthy old adults aged 70-75 years who received PPSV23; old adults who have diabetes mellitus aged 70-75 years who rec

Eligibility Criteria

• Age: 70 Years - 75 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Older Adult (65+)

You may qualify if:

• Elderly people aged 70-75 years
• Had received PPSV23 in the previous 5-7 years

You may not qualify if:

• Immunocompromised patients
• Subjects receiving immunosuppressive agents
• Subjects with a history of vaccination with pneumococcal conjugate vaccine
• Subjects with a history of pneumococcal disease (positive culture from blood or other sterile fluid)
• Fever (defined as an oral temperature \>37.5℃) within 24 h before PPSV23 vaccination

Sponsors & Collaborators

• Korea University Guro Hospital: lead
• Merck Sharp & Dohme LLC: collaborator

Study Sites (1)

Koera University Guro Hospital

Seoul, 08308, South Korea

Location

Related Publications (3)

• Song JY, Cheong HJ, Tsai TF, Chang HA, Choi MJ, Jeon JH, Kang SH, Jeong EJ, Noh JY, Kim WJ. Immunogenicity and safety of concomitant MF59-adjuvanted influenza vaccine and 23-valent pneumococcal polysaccharide vaccine administration in older adults. Vaccine. 2015 Aug 26;33(36):4647-52. doi: 10.1016/j.vaccine.2015.05.003. Epub 2015 May 14.

  PMID: 25980426 BACKGROUND

• Kawakami K, Kishino H, Kanazu S, Toshimizu N, Takahashi K, Sterling T, Wang M, Musey L. Revaccination with 23-valent pneumococcal polysaccharide vaccine in the Japanese elderly is well tolerated and elicits immune responses. Vaccine. 2016 Jul 19;34(33):3875-81. doi: 10.1016/j.vaccine.2016.05.052. Epub 2016 Jun 10.

  PMID: 27265450 BACKGROUND

• Choi WS, Choi JH, Kwon KT, Seo K, Kim MA, Lee SO, Hong YJ, Lee JS, Song JY, Bang JH, Choi HJ, Choi YH, Lee DG, Cheong HJ; Committee of Adult Immunization; Korean Society of Infectious Diseases. Revised adult immunization guideline recommended by the korean society of infectious diseases, 2014. Infect Chemother. 2015 Mar;47(1):68-79. doi: 10.3947/ic.2015.47.1.68. Epub 2015 Mar 30. No abstract available.

  PMID: 25844267 BACKGROUND

MeSH Terms

Conditions

Pneumococcal Infections; Diabetes Mellitus

Interventions

23-valent pneumococcal capsular polysaccharide vaccine

Condition Hierarchy (Ancestors)

Streptococcal Infections; Gram-Positive Bacterial Infections; Bacterial Infections; Bacterial Infections and Mycoses; Infections; Glucose Metabolism Disorders; Metabolic Diseases; Nutritional and Metabolic Diseases; Endocrine System Diseases

Study Officials

• Joon Young Song, MD, PhD.

  Professor

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Hye Seong, MD, PhD.

CONTACT

+82-10-4840-5965; msmjoonhoo@gmail.com

Study Design

• Study Type: interventional
• Phase: phase 4
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor

Study Record Dates

• First Submitted: November 24, 2020
• First Posted: May 6, 2021
• Study Start: May 1, 2021
• Primary Completion: April 30, 2022
• Study Completion: April 30, 2022
• Last Updated: May 6, 2021

Record last verified: 2021-05

Locations

KR (1)