NCT06635525

Brief Summary

The aim of this observational study is to determine if and how kidney failure affects the development of protective immune responses following vaccination in patients on chronic dialysis. Researchers will compare the effectiveness of the influenza vaccine in inducing protective antibodies between hemodialysis patients and subjects without chronic kidney disease. Participants will:

  • Be enrolled at the time of influenza vaccination
  • Visit the clinic at 7, 14, 30, 60, and 120 days after vaccination
  • Be asked to provide relevant clinical information and a blood sample at each visit

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
146

participants targeted

Target at P50-P75 for all trials

Timeline
2mo left

Started Oct 2024

Geographic Reach
1 country

3 active sites

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress91%
Oct 2024Jul 2026

First Submitted

Initial submission to the registry

October 8, 2024

Completed
2 days until next milestone

First Posted

Study publicly available on registry

October 10, 2024

Completed
6 days until next milestone

Study Start

First participant enrolled

October 16, 2024

Completed
1.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2026

Last Updated

March 30, 2026

Status Verified

March 1, 2026

Enrollment Period

1.7 years

First QC Date

October 8, 2024

Last Update Submit

March 25, 2026

Conditions

Keywords

VaccineInfluenzaChronic Kidney DiseaseHemodialysisPeritoneal dialysisHumoral Response

Outcome Measures

Primary Outcomes (1)

  • Frequency of serological response to influenza vaccination

    From enrollment to 30±3 days after vaccination

Secondary Outcomes (5)

  • Titer of influenza-specific antibodies after vaccination

    From enrollment to 30±3 days after vaccination

  • Correlation between virus-specific antibody concentration after influenza vaccination and the frequency of circulating T follicular helper cell subsets

    From enrollment to 120±5 days after vaccination

  • Degree of antigen-specific activation of T follicular helper and B cells in vitro after influenza vaccination

    From enrollment to 120±5 days after vaccination

  • Degree of polyclonal activation of T follicular helper and B cells in vitro after exposure to the serum of subjects vaccinated against influenza

    From enrollment to 120±5 days after vaccination

  • Single-cell transcriptome expression in circulating T follicular helper cell subsets

    From enrollment to 120±5 days after vaccination

Other Outcomes (3)

  • SARS-CoV-2-specific antibody concentration after vaccination

    From enrollment to 30±3 days after vaccination

  • Correlation between virus-specific antibody concentration after SARS-CoV-2 vaccination and the frequency of circulating T follicular helper cell subsets

    From enrollment to 120±5 days after vaccination

  • Degree of antigen-specific activation of T follicular helper and B cells in vitro after SARS-CoV-2 vaccination

    From enrollment to 120±5 days after vaccination

Study Arms (3)

Hemodialysis patients

Subjects with advanced chronic kidney disease requiring thrice-weekly hemodialysis

Biological: Influenza vaccinationBiological: SARS-CoV-2 vaccine

Peritoneal dialysis patients

Subjects with advanced chronic kidney disease on peritoneal dialysis

Biological: Influenza vaccinationBiological: SARS-CoV-2 vaccine

Healthy controls

Subjects without a prior history of chronic kidney disease

Biological: Influenza vaccinationBiological: SARS-CoV-2 vaccine

Interventions

Single-dose

Healthy controlsHemodialysis patientsPeritoneal dialysis patients

Single-dose

Healthy controlsHemodialysis patientsPeritoneal dialysis patients

Eligibility Criteria

Age18 Years - 70 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

The study populations consist of (1) subjects with advanced chronic kidney disease requiring thrice-weekly hemodialysis, (2) subjects with advanced chronic kidney disease on peritoneal dialysis, and (3) subjects without a prior medical history of chronic kidney disease, who are eligible to receive an influenza vaccine according to standard clinical practice guidelines.

You may qualify if:

  • Age between 18 and 70 years
  • Patients undergoing thrice-weekly hemodialysis / peritoneal dialysis for at least 3 months OR healthy individuals without a history of renal insufficiency
  • Subjects eligible to receive a seasonal influenza vaccine
  • Signed informed consent for participation in the study

You may not qualify if:

  • Recent influenza infection (clinically resolved less than 3 months ago).
  • Administration of immunosuppressive drugs in the two weeks prior to vaccination.
  • Administration of another vaccine in the three weeks prior to enrollment (co-administration of other vaccines with those under study does not contraindicate participation).
  • Systemic infection clinically resolved less than two weeks before enrollment.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (3)

Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico

Milan, 20122, Italy

RECRUITING

ASST Santi Paolo e Carlo

Milan, 20142, Italy

NOT YET RECRUITING

ASST Fatebenefratelli Sacco

Milan, 20157, Italy

NOT YET RECRUITING

Biospecimen

Retention: SAMPLES WITH DNA

Serum and peripheral blood mononuclear cells

MeSH Terms

Conditions

Influenza, HumanRenal Insufficiency, Chronic

Interventions

Influenza VaccinesCOVID-19 Vaccines

Condition Hierarchy (Ancestors)

Respiratory Tract InfectionsInfectionsOrthomyxoviridae InfectionsRNA Virus InfectionsVirus DiseasesRespiratory Tract DiseasesRenal InsufficiencyKidney DiseasesUrologic DiseasesFemale Urogenital DiseasesFemale Urogenital Diseases and Pregnancy ComplicationsUrogenital DiseasesMale Urogenital DiseasesChronic DiseaseDisease AttributesPathologic ProcessesPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Viral VaccinesVaccinesBiological ProductsComplex Mixtures

Central Study Contacts

Manuel A Podesta', MD, PhD

CONTACT

Giuseppe Castellano, MD, PhD

CONTACT

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 8, 2024

First Posted

October 10, 2024

Study Start

October 16, 2024

Primary Completion (Estimated)

July 1, 2026

Study Completion (Estimated)

July 1, 2026

Last Updated

March 30, 2026

Record last verified: 2026-03

Locations