Clinical Trial Details
— Status: Enrolling by invitation
Administrative data
NCT number |
NCT05571735 |
Other study ID # |
VIR21002 |
Secondary ID |
|
Status |
Enrolling by invitation |
Phase |
|
First received |
|
Last updated |
|
Start date |
April 15, 2023 |
Est. completion date |
December 14, 2024 |
Study information
Verified date |
May 2024 |
Source |
University of Oxford |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Observational
|
Clinical Trial Summary
This study is a non-randomized observation and comparison of immune response between
bacteriologically confirmed TB patients under treatment cohort who received COVID-19 vaccine
(n=54) vs healthy individuals (n=54).
Each participant will receive single or double doses of one of COVID-19 vaccines
(Pfizer-BioNTech COVID-19 vaccine, AstraZeneca vaccine or Janssen Ad26.COV2.S COVID-19
vaccine) in the deltoid muscle of the non-dominant arm. Study Duration approximately 1 year.
The main focus of this study is to compare the humoral and cellular immunological responses
of the COVID-19 vaccines between bacteriologically confirmed TB patients under treatment vs
healthy individuals.
This study is funded by the Wellcome Trust. The grant reference number is 220211/A/20/Z.
Description:
In late 2020, COVID-19 pandemic was occurred globally. Like Tuberculosis (TB), severe acute
respiratory syndrome coronavirus-2 (SARS-CoV-2) infection is primarily affected in
respiratory tract with increased risk of severe clinical complications especially in
particular risk population like diabetic patients and old ages. Like other viral infections,
there is evidence that both acquired humoral and cellular immunological responses against the
SARS-CoV-2 infection are key in providing protective immunity. Although the magnitude and
durability of both binding and neutralizing antibodies after seroconversion of COVID-19
patients are highly variable at the individual patient level, higher level of neutralizing
antibodies appears to be correlated with protection against reinfection.
As natural immunity alone after COVID-19 infection appears to be insufficient for protection
against COVID-19, since the beginning of COVID-19 pandemic, several COVID-19 vaccines
developed based on different technical platforms have been introduced globally. Up to August
2021, twenty COVID-19 vaccines has been included in WHO's Emergency Use Listing (EUL).
As protection against COVID-19 infection among TB patients is critical to prevent severe
clinical outcomes, COVID-19 immunization program is carrying out among TB patients in the
SMRU TB centers with supply of COVID-19 vaccines from Ministry of public health, Thailand. In
Thailand, Pfizer-BioNTech COVID-19 vaccine, AstraZeneca vaccine and Janssen Ad26.COV2.S
COVID-19 vaccine are widely available in COVID-19 vaccination campaigns.
Pfizer-BioNTech COVID-19 vaccine is an mRNA vaccine and its two-dose regimen with inter-dose
interval of 21 days apart can provide effective protection against SARS-CoV-2- infection.
Mild local and systemic reactions can occur after vaccination but serious adverse effects can
be complicated rarely. It can also be provided for children over 6 months of age and
reactogenicity is also less frequent.
AstraZeneca vaccine is a replication-deficient chimpanzee adenovirus-vectored vaccine
expressing full-length SARS CoV-2 spike glycoprotein gene. Efficacy, immunogenicity and
safety profiles of the vaccine are acceptable and reasonably well tolerated in healthy young
and old adults, symptomatic COVID-19 patients and people with HIV infection.
Janssen Ad26.COV2.S COVID-19 vaccine is a recombinant, replication-incompetent adenovirus
serotype 26 (Ad26) vector encoding a full-length and stabilized SARS-CoV-2 spike protein. The
vaccine needs single dose of administration intramuscularly into the deltoid muscle.
Multicenter, placebo-controlled, phase 1-2a trial has shown that single dose of the vaccine
has an efficacy of 66.9% against symptomatic COVID-19 infection, 76.7% against severe
COVID-19 disease after 14 days, and 85.4% after 28 days. The vaccine appears to be safe like
other COVID-19 vaccines because no severe allergic or anaphylactic reaction has been recorded
in clinical trials except from occurrence of a very rare syndrome of blood clotting combined
with low platelet counts in some countries. However, there has been no sufficient data on
pregnancy and people with co-morbidity especially HIV/TB patients.
As there is limited knowledge about immunogenicity of COVID-19 vaccines among TB patients,
examination of immunological responses from the COVID-19 vaccines offering in community
COVID-19 vaccination campaigns among TB patients as well as healthy population is warranted.
Protectability and immune response to the COVID-19 vaccines in TB patients under treatment
should be studied to get better understanding about immunological responses among population
with co-morbidity. Along with antibodies response, reactogenicity, clinical and laboratory
safety profiles of the COVID-19 vaccines in this specific group will also be assessed and
compared with the healthy control.
This study is a non-randomized observational study aimed to compare humoral and cellular
immunological responses of the COVID-19 vaccines between bacteriologically confirmed TB
patients under treatment cohort (n=54) vs healthy individuals (n=54) after receiving a
COVID-19 vaccine. Each participant will receive single or double doses of one of
aforementioned COVID-19 vaccines in the deltoid muscle of the non-dominant arm.
Follow-up appointments will be scheduled on 2nd dose visit and 28 days after 2nd dose in
double dose scheduled COVID-19 vaccines and 28 days and 56 days after vaccination in single
dose scheduled COVID-19 vaccine. For assessment of reactogenicity, participants will be
informed to attend follow-up appointments every day for 7 days following each dose of
vaccination.
Frequency, incidence and nature of solicited local and systemic adverse events (AEs) and
unsolicited AEs will be recorded at their follow up visits. For immunological responses,
humoral and cellular antibody level to SARS-CoV-2 virus will be assessed over time (before
1st dose, before 2nd dose , 28 days after 2nd dose in double dose scheduled COVID-19 vaccine
or before single dose vaccination, 28 days and 56 days after vaccination in single dose
scheduled COVID-19 vaccine) and compared between TB patients and healthy individuals.
Baseline laboratory investigations such as liver function tests, renal function tests, serum
electrolytes, iron, complete blood count and C reactive protein will be tested on Day 0 and
rechecked on the same days as immunological tests to review changes after vaccination.
Infection serological tests such as Human immunodeficiency virus (HIV), Hepatitis B surface
antigen (HBsAg), and Hepatitis C antibody (HCV Ab) tests will be performed at screening visit
with consent of potential participants. Moreover, nasopharyngeal swab for COVID-19 PCR test
will be tested before being enrolled. These tests can be repeated if there are symptoms
suggestive of these infections.