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CMV-MVA Triplex Vaccination of Stem Cell Donors in Preventing CMV Viremia in Participants With Allogeneic Transplant

CMV-MVA Triplex Vaccination of Stem Cell Donors to Enhance CMV Specific Immunity and Prevent CMV Viremia in Recipients After Stem Cell Transplant

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03560752
Enrollment
34
Registered
2018-06-18
Start date
2018-08-20
Completion date
2026-07-29
Last updated
2025-12-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Accelerated Phase CML, BCR-ABL1 Positive, Acute Lymphoblastic Leukemia in Remission, Acute Myeloid Leukemia in Remission, Chronic Lymphocytic Leukemia, Chronic Phase CML, BCR-ABL1 Positive, Cytomegalovirus Positive, Donor, Hematopoietic Cell Transplant Recipient, Hodgkin Lymphoma, Myelodysplastic Syndrome, Myelodysplastic/Myeloproliferative Neoplasm, Non-Hodgkin Lymphoma, Myelofibrosis, Hematopoietic and Lymphoid Cell Neoplasm

Brief summary

This phase II trial studies how well multi-peptide CMV-modified vaccinia Ankara (CMV-MVA Triplex) vaccination of stem cell donors works in preventing cytomegalovirus (CMV) viremia in participants with blood cancer undergoing donor stem cell transplant. Giving a vaccine to the donors may boost the recipient's immunity to this virus and reduce the chance of CMV disease after transplant.

Detailed description

PRIMARY OBJECTIVES: I. Establish the feasibility and safety of priming CMV immunity in donors by Triplex vaccination prior to peripheral blood stem cell (PBSC) harvest. SECONDARY OBJECTIVES: I. Examine if Triplex vaccination of hematopoietic stem cell transplant (HCT) donors has an impact on CMV events. OUTLINE: Donors receive multi-peptide CMV-modified vaccinia Ankara vaccine injection between days -60 and -10 prior to granulocyte colony stimulating factor mobilization. Participants undergo hematopoietic cell transplantation on day 0. After completion of study treatment, participants are followed up for 1 year.

Interventions

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
City of Hope Medical Center
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
Yes

Inclusion criteria

* DONOR: Ability to comprehend the investigational nature of the study and provide informed consent * DONOR: Willing to receive Triplex vaccination, a minimum of 14 days prior to the PBSC collection * DONOR VACCINATION: Donors are eligible to be vaccinated prior to the determination of their human immunodeficiency virus (HIV), hepatitis B virus (HBV), hepatitis C virus (HCV) and human T-cell lymphotropic virus (HTLV) status. The

Exclusion criteria

for transplant is independent of eligibility for vaccination and is determined by the

Design outcomes

Primary

MeasureTime frameDescription
Delayed EngraftmentUp to 1 year from stem cell infusion.Time to neutrophil engraftment was defined as days from stem cell infusion to the first of three consecutive days of absolute neutrophil count ≥0.5 x 109/L. Delayed engraftment was defined as ≥20 days to neutrophil recovery.
Severe (Grade III-IV) Acute Graft Versus Host DiseaseUp to 6 months from stem cell infusionAcute graft versus host disease (aGvHD) happens within days or as late as 6 months after allogeneic transplants. The three main tissues that acute GVHD affects are the skin, liver, and gastrointestinal tract.
Number of Recipients With Grade 3-4 Adverse EventsUp to 1 year from stem cell infusion.Toxicities were assessed in recipients by Common Terminology Criteria for Adverse Events version 4.0.
Number of Donors With Grade 2-3 Adverse EventsUp to 6 months after G-CSF mobilizationToxicities were assessed in recipients by Common Terminology Criteria for Adverse Events version 4.0.
100-Day Non-Relapse Mortality (NRM)From stem cell infusion up to 100 days post-HSCT (hematopoietic stem cell transplantation).NRM was defined as death without recurrent or progressive disease after allogeneic transplant. Probabilities of NRM were estimated with the use of cumulative incidence curves, with relapse viewed as a competing risk.

Countries

United States

Participant flow

Participants by arm

ArmCount
Donor (Multi-peptide CMV-modified Vaccinia Ankara Vaccine)
Donors receive multi-peptide CMV-modified vaccinia Ankara vaccine injection between days -60 and -10 prior to granulocyte colony stimulating factor mobilization.
17
Receipient (Multi-peptide CMV-modified Vaccinia Ankara Vaccine)
Participants undergo hematopoietic cell transplantation on day 0 and receive multi-peptide CMV-modified Vaccinia Ankara vaccine injection on days 28 and 56.
17
Total34

Baseline characteristics

CharacteristicDonor (Multi-peptide CMV-modified Vaccinia Ankara Vaccine)TotalReceipient (Multi-peptide CMV-modified Vaccinia Ankara Vaccine)
Age, Continuous53 years53 years56 years
Ethnicity (NIH/OMB)
Hispanic or Latino
7 Participants16 Participants9 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
10 Participants18 Participants8 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
6 Participants11 Participants5 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
11 Participants23 Participants12 Participants
Region of Enrollment
United States
17 participants34 participants17 participants
Sex: Female, Male
Female
10 Participants19 Participants9 Participants
Sex: Female, Male
Male
7 Participants15 Participants8 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 172 / 17
other
Total, other adverse events
16 / 175 / 17
serious
Total, serious adverse events
0 / 172 / 17

Outcome results

Primary

100-Day Non-Relapse Mortality (NRM)

NRM was defined as death without recurrent or progressive disease after allogeneic transplant. Probabilities of NRM were estimated with the use of cumulative incidence curves, with relapse viewed as a competing risk.

Time frame: From stem cell infusion up to 100 days post-HSCT (hematopoietic stem cell transplantation).

ArmMeasureValue (NUMBER)
Recipients (Multi-peptide CMV-modified Vaccinia Ankara Vaccine)100-Day Non-Relapse Mortality (NRM)0 percentage of evaluable participants
Primary

Delayed Engraftment

Time to neutrophil engraftment was defined as days from stem cell infusion to the first of three consecutive days of absolute neutrophil count ≥0.5 x 109/L. Delayed engraftment was defined as ≥20 days to neutrophil recovery.

Time frame: Up to 1 year from stem cell infusion.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Recipients (Multi-peptide CMV-modified Vaccinia Ankara Vaccine)Delayed Engraftment0 Participants
Primary

Number of Donors With Grade 2-3 Adverse Events

Toxicities were assessed in recipients by Common Terminology Criteria for Adverse Events version 4.0.

Time frame: Up to 6 months after G-CSF mobilization

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Recipients (Multi-peptide CMV-modified Vaccinia Ankara Vaccine)Number of Donors With Grade 2-3 Adverse Events3 Participants
Primary

Number of Recipients With Grade 3-4 Adverse Events

Toxicities were assessed in recipients by Common Terminology Criteria for Adverse Events version 4.0.

Time frame: Up to 1 year from stem cell infusion.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Recipients (Multi-peptide CMV-modified Vaccinia Ankara Vaccine)Number of Recipients With Grade 3-4 Adverse Events0 Participants
Primary

Severe (Grade III-IV) Acute Graft Versus Host Disease

Acute graft versus host disease (aGvHD) happens within days or as late as 6 months after allogeneic transplants. The three main tissues that acute GVHD affects are the skin, liver, and gastrointestinal tract.

Time frame: Up to 6 months from stem cell infusion

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Recipients (Multi-peptide CMV-modified Vaccinia Ankara Vaccine)Severe (Grade III-IV) Acute Graft Versus Host Disease2 Participants

Source: ClinicalTrials.gov · Data processed: Feb 17, 2026