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Herpes ZosterPhase 2VZV-ZostavaxNCT01573182

Herpes Zoster Vaccine for Bone Marrow Transplant Donors

A Phase 2 study testing Zostavax in people with Herpes Zoster, run by University of Sydney at 1 site in Australia.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to determine whether vaccination of stem cell donors with Zostavax can reduce the rate of Herpes Zoster reactivations in transplant recipients. The clinical hypotheses is: 1) that Zostavax given to stem cell donors will induce protective VZV specific T cell proliferation in allogeneic stem… Read more about this study

Who is it for?
Ages 50 years and older
Conditions the study is for
Herpes Zoster
What is being tested?
Zostavax
Could I receive a placebo?
No, everyone receives an active treatment
How many people
8 participants
Where
1 siteAustralia
Study dates
Apr 2012to 3 May 2018
Phase
Phase 2
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 50 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Allogeneic HSCT Recipient-donor pair
  • Donor aged 50 years and over
  • Recipients and donors willing to be recruited as a pair to this study
  • Recipients undergoing myeloablative or non myeloablative non T cell depleted, allogeneic stem cell transplants from HLA identical or 1 HLA antigen mismatched siblings.

Who cannot join

  • Lack of informed consent
  • Inability to recruit donor and recipient as a pair
  • Autologous transplant
  • Contraindication to Zostavax in donor
  • Donor aged <50 years
  • Recipient VZV immunoglobulin G (IgG) negative pre-transplantation,
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  • Donor VZV IgG negative
  • Pregnancy of donor at randomisation
  • Inability to follow study protocol (donor and recipient)
  • Malignancy or immunosuppression of HSC donor
  • Expected HSCT within 30 to 42 days

Trial locations and contacts

1 site in 1 country.

Australia1 site
  • Westmead Hospital

    Sydney, New South Wales, 2145

Other trials in Australia

About this study

Official title: A Phase II Clinical Trial of Vaccination of Stem Cell Donors With Zostavax to Reduce the Incidence of Herpes Zoster in Transplant Recipients - A Pilot Study

The purpose of this study is to determine whether vaccination of stem cell donors with Zostavax can reduce the rate of Herpes Zoster reactivations in transplant recipients.

The clinical hypotheses is: 1) that Zostavax given to stem cell donors will induce protective VZV specific T cell proliferation in allogeneic stem cell transplant recipients that can be transferred to recipients; 2) and that donor vaccination with Zostavax is safe for transplant recipients as measured by viral load measurement by polymerase chain reaction assay (PCR) at the time of stem cell donation.

Read the detailed description

Infection is a major cause of morbidity and death among haemopoietic stem cell transplantation patients (HSCTs). Beyond the initial post-transplant (BMT) phase of neutropenia, the most common infections are cytomegalovirus (CMV) and fungal infections. Another common infection for which BMT patients are at increased risk is varicella-zoster virus (VZV) (both primary varicella and herpes zoster). VZV infection is controlled by specific T cell responses that are impaired post stem cell transplant.

Heat inactivated VZV vaccine has been shown to more than halve the incidence of herpes zoster in adult BMT patients undergoing autologous transplantation. Clinical protection was correlated with in vitro CD4 T-cell proliferation in response to varicella-zoster virus. Being a live vaccine, attenuated VZV and (herpes zoster (HZ) vaccines are contraindicated within 24 months after allogeneic HSCT. However, priming of donor T-cells with herpes zoster vaccine may be a feasible alternative. One possible complication is the transfer of live virus from vaccinated donors to immunocompromised stem cell transplant recipients.

Normal donors donating for HLA matched siblings will be vaccinated with the Varivax vaccine prior to donation. Stem cell products will be assessed at the time of donation for evidence of VZV by PCR and for response to vaccination by T cell proliferation. Transfer of VZV proliferative responses in transplant recipients will be assessed by VZV specific T cell proliferation at 3, 6, 9 and 12 months post transplantation.

Conditions
Herpes Zoster
Being tested
Zostavax
Keywords
Zostavax, Herpes Zoster, VZV vaccination, Allogeneic haemopoietic stem cell transplantation
Medical subject headings
Herpes Zoster

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • ZostavaxBiological

    VZV seropositive donors 50 years and over will receive vaccination with a live attenuated herpes zoster vaccine (Zostavax) by the IM route 4 to 6 weeks prior to stem cell harvesting.

Study groups in NCT01573182
Study groupRoleWhat they receive
DonorExperimentalVZV seropositive donors 50 years and over will receive vaccination with a live attenuated herpes zoster vaccine (Zostavax) by the intramuscular (IM) route 4 to 6 weeks prior to stem cell harvesting..
Receives: Biological: Zostavax

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percentage of transplant recipients with VZV specific T cell proliferation within the first 12 moths post-transplant.

    VZV specific T cell proliferation will be assessed at 3, 6, 9 and 12 months post transplant in stem cell transplant recipients.

    Measured: incidence of VZV specific T cell proliferation in the first 12 months post allogeneic stem cell transplant in recipients receiving stem cells from Zostavax vaccinated donors

Secondary outcomes (1)
  1. Donor VZV positivity by PCR and genotype and donor VZV specific T cell response to vaccination

    Donor VZV positivity by PCR and VZV specific T cell proliferation will be assessed 4 to 6 weeks after vaccination.

    Measured: 4 to 6 weeks after vaccination

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted6 Apr 2012 (estimated)
  2. Study startApr 2012
  3. Primary completion3 May 2018
  4. Study completion3 May 2018

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
8 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01573182
Sponsor's protocol ID
VADOVAR
Acronym
VZV-Zostavax
Status last verified
May 2018
First submitted
29 Mar 2012
Last updated
11 May 2018
Results posted
No
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Zostavax in people with Herpes Zoster, run by University of Sydney at 1 site in Australia.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 11 May 2018. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Australia. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of transplant recipients with VZV specific T cell proliferation within the first 12 moths post-transplant. (time frame: incidence of VZV specific T cell proliferation in the first 12 months post allogeneic stem cell transplant in recipients receiving stem cells from Zostavax vaccinated donors). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 11 May 2018.

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