A Phase 1/2 Clinical Study to Evaluate the Optimal Dose and the Protective Effect of CMV-MVA Triplex Vaccine in Pediatric Patients Receiving an Allogeneic Hematopoietic Stem Cell Transplant
试验速览
- 阶段
- 1 期
- 状态
- 招募中
- 发起方
- 入组人数
- 80
- 试验地点
- 1
- 主要终点
- Optimal dose (Phase I)
研究概览
简要总结
This phase I/II trial studies the side effects and best dose of multi-antigen cytomegalovirus (CMV)-modified vaccinia ankara vaccine and to see how well it works in treating pediatric patients with positive cytomegalovirus who are undergoing donor stem cell transplant. Multi-antigen CMV-modified vaccinia ankara vaccine may help people resist CMV life-threatening complications.
详细描述
PRIMARY OBJECTIVES:
I. To investigate the optimal dose of multi-antigen CMV-modified vaccinia ankara vaccine (Triplex) in CMV-positive pediatric patients receiving human leukocyte antigen (HLA) matched, mismatched, or haploid-identical hematopoietic cell transplantation (HCT). (Phase I) II. To evaluate the safety profile of Triplex in this patient population. (Phase I) III. To determine if Triplex reduces the frequency of CMV events when compared to historical data. (Phase II)
SECONDARY OBJECTIVES:
I. To characterize CMV reactivation and disease by assessing: time to CMV reactivation, duration of viremia, recurrence of viremia, incidence of late CMV viremia/disease (defined as > 100 days and =< 365 days post HCT), use of anti-viral drugs triggered by rising CMV viremia or viremia >= 3750 IU/mL, cumulative number of CMV specific antiviral treatment days.
II. To evaluate the impact of Triplex on transplant related outcomes by assessing the incidence of acute and chronic graft versus host disease (GVHD), relapse, non-relapse mortality (NRM), all-cause mortality, infections.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Supportive Care
- 盲法
- None
入排标准
- 年龄范围
- 1 Year 至 21 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •All subjects (or their guardians) must have the ability to understand and the willingness to sign a written informed consent; age appropriate assent will be obtained per institutional guidelines; to allow non-English patients to participate in this study, bilingual health services will be provided in the appropriate language when feasible
- •Participant must be willing to comply with study and/or follow-up procedures, including willingness to be followed for one year post-HCT
- •Planned allogenic (allo)-HCT, with 9/10 or 10/10 (A, B, C, DRB1, DQB1) high/intermediate resolution HLA donor allele matching and with no T-cell depletion of graft
- •Planned related HCT with molecular 3/6 HLA donor allele matching (haploidentical) (for phase I only)
- •CMV seropositive at the time of HCT
- •Conditioning and immunosuppressive regimens according to institutional guidelines are permitted
- •Negative serum or urine beta-human chorionic gonadotropin (HCG) test (female patient of childbearing potential only) within two weeks of registration
- •Seronegative for human immunodeficiency virus (HIV), hepatitis C virus (HCV); if hepatitis B virus (HBV) core seropositive, absence of HBV deoxyribonucleic acid (DNA) within 2 months of registration
- •Agreement by females of childbearing potential and sexually active males to use an effective method of contraception (hormonal or barrier method of birth control or abstinence) prior to study entry and for up to 90 days post-HCT; should a woman become pregnant or suspect that she is pregnant while participating on the trial, she should inform her treating physician immediately
排除标准
- •TRANSPLANT RELATED CRITERIA: Patients undergoing cord blood transplant (CB-HCT)
- •Any prior investigational CMV vaccine
- •Anti-CMV therapy in the last 6 months
- •Live attenuated vaccines
- •Medically indicated subunit (Engerix-B for HBV; Gardasil for human papillomavirus [HPV]) or killed vaccine (e.g. influenza, pneumococcal)
- •Allergy treatment with antigens injections
- •Alemtuzumab, cyclophosphamide, ATG or any equivalent in vivo T-cell depleting agent; Note: Pre-transplant ATG is permitted
- •Antiviral medications with known therapeutic effects on CMV such as ganciclovir (GCV)/valine (VAL), FOS, Cidofovir, CMX-001, maribavir; acyclovir has no known therapeutic efficacy against CMV and is allowable as standard of care to prevent herpes simplex virus (HSV)
- •Prophylactic therapy with CMV immunoglobulin or prophylactic antiviral CMV treatment; intravenous immunoglobulin therapy (IVIG) is allowed
- •Other investigational product-concurrent enrollment in other clinical trials using any investigational new drug (IND) drugs with unknown effects on CMV or with unknown toxicity profiles is prohibited
- •Other medications that might interfere with the evaluation of the investigational product
- •Patients with congenital immune deficiency
- •Patients with active autoimmune conditions requiring systemic immunosuppressive therapy within the previous 5 years are not eligible, the exception to this is patients with aplastic anemia, who are eligible
- •Pregnant women and women who are lactating; CMV-MVA Triplex risks to pregnant women are unknown; because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with the administered vaccine, also breastfeeding should be discontinued if the mother is enrolled on this study
- •Any other condition that would, in the investigator's judgment, contraindicate the patient's participation in the clinical study due to safety concerns or compliance with clinical study procedures, e.g., social/psychological issues, etc
- •Prospective participants who, in the opinion of the investigator, may not be able to comply with all study procedures (including compliance issue related to feasibility/logistics)
研究组 & 干预措施
Supportive Care (multi-antigen CMV-modified vaccinia ankara)
Patients receive multi-antigen CMV-modified vaccinia ankara vaccine IM on days 28 and 56 post-HCT.
干预措施: Laboratory Biomarker Analysis (Other)
Supportive Care (multi-antigen CMV-modified vaccinia ankara)
Patients receive multi-antigen CMV-modified vaccinia ankara vaccine IM on days 28 and 56 post-HCT.
干预措施: Multi-peptide CMV-Modified Vaccinia Ankara Vaccine (Biological)
结局指标
主要结局
Optimal dose (Phase I)
时间窗: Up to 1 year
Non-relapse mortality
时间窗: At 100 days post-HCT
Will be compared to historical controls at the final analysis, and a 90% lower confidence bound on the difference in 12-month event free survival will be produced.
Incidence of adverse events (Phase I)
时间窗: Up to 1 year
Adverse events will be characterized using the descriptions and grading scales according to Common Terminology Criteria for Adverse Events (CTCAE) version 4.0.
Severe (grade 3-4) acute graft versus host disease (aGVHD)
时间窗: Within 2 weeks from each vaccination
Incidence of grade 3-4 adverse events
时间窗: Within 2 weeks from each vaccination
Will be graded per CTCAE version 4.0.
Cytomegalovirus (CMV) events (reactivation >= 1250 IU/mL), or viremia treated by anti-viral therapy, or detection of CMV by histology (Phase II)
时间窗: Prior to day 100 post-hematopoietic cell transplantation (HCT) or viremia treated by anti-viral therapy, or detection of CMV by histology
Will be assessed with exact 90% confidence bounds.
次要结局
- NK function (cytotoxicity and cytokine production)(Up to 1 year post-HCT)
- Relapse defined by bone marrow and/or imaging studies(Up to 1 year)
- All-cause mortality(Up to 1 year)
- Non-relapse mortality(Up to 1 year)
- Infections(Up to 1 year)
- Time-to viremia(Number of days from transplant to the date of > 1250 IU/mL, assessed up to 1 year)
- Incidence of late CMV viremia(> 100 and =< 365 days post-HCT)
- Use of antiviral drugs (triggered by rising CMV viremia or viremia >= 3,750 IU/ml)(Up to 1 year, rising CMV viremia or viremia >= 3,705)
- Time to engraftment(Up to 1 year)
- Kinetics of CMV-specific T cell immunity(Up to 1 year post-HCT)
- Duration of viremia(Up to 1 year)
- Cumulative number of CMV specific antiviral treatment days(Up to 1 year)
- Incidence of acute graft versus host disease (aGVHD)(Up to 1 year)
- Chronic GVHD (cGVHD)(Up to 1 year)
- Levels of CMV-specific T cell immunity(Up to 1 year post-HCT)
- Natural killer (NK) phenotype(Up to 1 year post-HCT)