A MultIceNTER Phase I Peptide VaCcine Trial to Exploit NeoePitope-Specific T Cells for the Treatment of H3-Mutated Gliomas - (INTERCEPT-H3)
试验速览
- 阶段
- 1 期
- 状态
- 进行中（未招募）
- 入组人数
- 15
- 试验地点
- 16
- 主要终点
- Assessment of safety of repeated fixed dose vaccinations with the H3K27M peptide vaccine administered with radiotherapy and Atezolizumab in patients with H3K27M-mutant gliomas. Primary safety endpoint is the Regime Limiting Toxicity (RLT).
研究概览
简要总结
The study "A MultIceNTER Phase I Peptide VaCcine Trial to Exploit NeoePitope-Specific T Cells for the Treatment of H3K27M-Mutated Gliomas - (INTERCEPT H3)" is a non-controlled, open-label, single arm, multicenter phase I trial involving patients with gliomas carrying an H3.1K27M or H3.3K27M mutation.
详细描述
The patient population will be molecularly defined and include adult patients with newly diagnosed K27M-mutant histone-3.1 (H3.1K27M) or histone-3.3 (H3.3K27M) diffuse midline gliomas (DMG).
Within this trial, a long peptide vaccine containing a K27M-mutated histone-3 sequence, will be administered subcutaneously in addition to standard radiotherapy and thereafter in combination with the human anti-PD-L1 antibody Atezolizumab.
Fifteen patients (pts. 1-15) will receive 11 doses of H3K27M peptide vaccine in total starting with standard radiotherapy (RT) and 14 doses of the human anti-PD-L1 antibody Atezolizumab (every three weeks, q3w) starting four weeks after completion of RT. The first 3 vaccines will be given bi-weekly (q2w) in combination with RT. One dose of vaccination will be given at the beginning of recovery (RE) period following RT. Vaccines 5-11 (q6w) will be initiated with Atezolizumab after completion of RE. In a safety lead-in, the first three patients (pts. 1-3) will be enrolled sequentially.
Following the last IMP administration, a safety / immunogenicity follow-up is planned for 24 weeks until end of study (EOS). To be able to assess safety, tolerability and immunogenicity of the peptide vaccine in combination with Atezolizumab 15 evaluable patients will be enrolled.
Diffuse gliomas of the thalamus, brain stem, spinal cord or other midline structures represent 3-4% of high-grade glioma and harbor H3.1K27M or H3.3K27M mutations as a characteristic founder mutation in > 70% of cases. H3K27M-mutant gliomas typically occur in children and adolescents but also in adult patients. After biopsy or resection, the standard of care consists of involved-field radiotherapy. Adding alkylating chemotherapy to radiotherapy does not offer additional benefit in retrospective case series and prospective clinical trials in children with pontine gliomas, probably as hypermethylation of the MGMT promoter in DMG is typically lacking. After radiotherapy gliomas frequently recur with a median 12-month progression-free survival of 20 %. Importantly, at recurrence particularly in the adult patient population, there is frequent distant progression and leptomeningeal dissemination, arguing for the necessity of systemic therapy upfront.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients present with histologically confirmed diagnosis of an H3.1K27M or H3.3K27M-mutated diffuse midline glioma WHO grade IV (with or without measurable residual tumor after tumor resection or biopsy after primary diagnosis)
- •Tumoral H3.1K27M or H3.3K27M mutation proven by immunohistochemistry or H3 DNA sequencing
- •No previous treatment except for surgery
- •Estimated creatinine clearance ≥ 30 mL/min according to the Cockcroft-Gault formula (or local institutional standard method)
- •Availability of tumor tissue for translational analyses (FFPE bulk tissue or biopsy)
- •Patients are scheduled to receive radiotherapy
- •Patients should be immunocompetent (i.e. no concomitant treatment with dexamethasone (or equivalent), or receive stable/decreasing steroid levels not exceeding 2 mg/day dexamethasone (or equivalent) during the last 3 days prior to clinical screening; no severe lymphopenia)
- •minimum 18 years old, smoking or non-smoking, of any ethnic origin and sex
- •Karnofsky Performance Status minimum
- •For patients with spinal gliomas, paralysis-caused mobility impairments will not be considered
- •Ability of patient to understand character and individual consequences of the clinical trial
- •Evidence of informed consent document personally signed and dated by the patient (or a witness in case the patient is unable to write) covering all trial-related procedures and indicating that the patient has been informed of all pertinent aspects of the study and that the patient consents to participate in the trial.
- •Non-nursing and non-pregnant women: Women of child-bearing potential (WOCBP) must have a negative urine pregnancy test (minimum sensitivity 25 IU/L or equivalent units of HCG) prior to the start of the investigational medicinal product (IMP). A woman is considered of childbearing potential, i.e. fertile, following menarche and until becoming post-menopausal unless permanently sterile. Permanent sterilization methods include hysterectomy, bilateral salpingectomy and bilateral oophorectomy. A postmenopausal state is defined as no menses for 12 months without an alternative medical cause. In case of possible postmenopausal status or doubtful childbearing potential, assessment of serum FSH (follicle-stimulating hormone) level will be performed once at baseline visit to confirm postmenopausal status. In this case, urine pregnancy tests during the trial as well as contraception are not necessary. However, in the absence of 12 months of amenorrhea, a single FSH measurement is insufficient.
- •WOCBP must be using a highly effective method of birth control (failure rate of less than 1% per year) to avoid pregnancy throughout the study and at least 5 months after the last dose of the IMP. Such methods include:
- •combined (estrogen and progestogen containing) hormonal contraception associated with inhibition of ovulation: oral intravaginal transdermal
- •progestogen-only hormonal contraception associated with inhibition of ovulation: oral injectable implantable
- •intrauterine device (IUD)
- •intrauterine hormone-releasing system (IUS)
- •bilateral tubal occlusion
- •vasectomised partner
- •sexual abstinence
- •Fertile men must be willing and able to use an effective method of birth control (condom) throughout the study for up to at least 5 months after the last dose of the IMP, if their sexual partners are WOCBP, using an effective method as well (acceptable methods see above). A man is considered fertile after puberty unless permanently sterile by bilateral orchidectomy.
- •Patients who are willing and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures
排除标准
- •Current use of immunosuppressive medication including treatment with systemic immunomodulatory agents at least 4 weeks or five half-lives of the drug, prior to starting study treatment, EXCEPT for the following: a. intranasal, inhaled, topical steroids, or local steroid injection (e.g., intra-articular injection); b. Systemic corticosteroids at physiologic doses ≤ 10 mg/day of prednisone or equivalent; c. Steroids as premedication for hypersensitivity reactions (e.g., CT scan premedication).
- •Previous or concurrent standard or experimental treatment for the tumor other than resection. This includes local therapies such as interstitial radiotherapy or local chemotherapy (i.e. BCNU wafers), loco-regional hyperthermia, electric fields, and antiangiogenic therapy (such as Bevacizumab).
- •Abnormal (≥ Grade 2 CTCAE v5.0) laboratory values for thyroid gland: free T4 and TSH
- •Abnormal (≥ Grade 2 CTCAE v5.0) laboratory values for hematology, liver and renal function (serum creatinine). In detail, the following values apply as exclusion criteria:
- •Hemoglobin < 9 g/dL (5.59 mmol/L)
- •White blood cell count (WBC) decrease (<3.0 x 109/L) or increase (> 10.0 x 109/L)
- •Absolute neutrophil count (ANC) decrease (< 1.5 x 109/L)
- •Platelet count decrease (< 100 x 109/L)
- •Bilirubin > 1.5 x ULN (upper limit of normal according to the performing lab´s reference range)
- •ALT > 2.5 x ULN
- •AST > 2.5 x ULN
- •GGT > 2.5 x ULN
- •Serum creatinine increase (> 1.5 x ULN)
- •Patients with history or presence of HIV and/or HBV/HCV positivity (testing performed according to local standards)
- •Patients with history or known presence of tuberculosis (positive QuantiFERON®-TB Gold test or tuberculin skin test). Patients with an indeterminate result of the QuantiFERON®-TB Gold test are not eligible unless additional testing demonstrates a negative result (tuberculin skin test or repeated QuantiFERON®-TB Gold test). If a tuberculin skin test is performed, an induration of > 6 mm is "positive" for a patient with history of BCG vaccine, while an induration of > 10 mm is "positive" for a patient without history of BCG vaccine. If necessary, a QuantiFERON®-TB Gold test might be complemented by additional specific diagnostic tests as per standard procedures.
- •Patients with severe infection(s) or signs/symptoms of infection within 2 weeks prior to start of treatment including radiotherapy and IMP
- •Active infection requiring systemic therapy
- •Patients who have received a live, attenuated vaccine within 4 weeks prior to start of treatment including radiotherapy and IMP
- •Patients with a prior solid organ transplantation or hematopoietic stem cell transplantation
- •Active autoimmune disease including history of severe autoimmune disease that might deteriorate when receiving an immuno-stimulatory agent. Patients with diabetes type I, vitiligo, psoriasis, or hypo- or hyperthyroid diseases not requiring immunosuppressive treatment are eligible
- •Clinically significant (i.e. active) cardiovascular disease: Cerebral vascular accident/stroke (< 6 months prior to enrolment), myocardial infarction (< 6 months prior to enrolment), unstable angina, congestive heart failure (≥ New York Heart Association Classification Class II), or serious cardiac arrhythmia requiring medication
- •History of other malignancies (except for adequately treated basal or squamous cell carcinoma or carcinoma in situ) within the last 5 years unless the patient has been diseasefree for 5 years.
- •Other severe acute or chronic medical conditions including colitis, inflammatory bowel disease, pneumonitis, pulmonary fibrosis or psychiatric conditions including recent (within the past year) or active suicidal ideation or behavior; or laboratory abnormalities that may increase the risk associated with study participation or study treatment administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the patient inappropriate for entry into this study
- •History of hypersensitivity to the investigational medicinal product or to any drug with similar chemical structure or to any excipient present in the pharmaceutical form of the investigational medicinal product, including known severe hypersensitivity reactions to monoclonal antibodies (NCI CTCAE v5.0 Grade ≥ 3)
- •Participation in other clinical trials or their observation period during the last 30 days before start of treatment including radiotherapy and IMP
- •No patient will be allowed to enroll in this trial more than once.
研究组 & 干预措施
Standard patient cohort
All fifteen patients will receive in total 11 doses of H3K27M peptide vaccine starting with standard radiotherapy (RT) and 14 doses of the human anti-PD-L1 antibody Atezolizumab/ Tecentriq® (every three weeks, q3w) starting four weeks after completion of RT. The first 3 vaccines will be given bi-weekly (q2w) in combination with RT. One dose of vaccination will be given at the beginning of recovery (RE) period following RT. Vaccines 5-11 (q6w) will be initiated with Atezolizumab after completion of RE. The H3K27M peptide vaccine is administered in combination with topical Imiquimod that serves as an adjuvant.
For safety reasons, the first three patients will be enrolled sequentially: Each patient will receive the first vaccination at the earliest 28 days after the previous patient has received the first vaccination.
干预措施: Imiquimod (5%) (Other)
Standard patient cohort
All fifteen patients will receive in total 11 doses of H3K27M peptide vaccine starting with standard radiotherapy (RT) and 14 doses of the human anti-PD-L1 antibody Atezolizumab/ Tecentriq® (every three weeks, q3w) starting four weeks after completion of RT. The first 3 vaccines will be given bi-weekly (q2w) in combination with RT. One dose of vaccination will be given at the beginning of recovery (RE) period following RT. Vaccines 5-11 (q6w) will be initiated with Atezolizumab after completion of RE. The H3K27M peptide vaccine is administered in combination with topical Imiquimod that serves as an adjuvant.
For safety reasons, the first three patients will be enrolled sequentially: Each patient will receive the first vaccination at the earliest 28 days after the previous patient has received the first vaccination.
干预措施: Tecentriq 1200 MG in 20 ML Injection (Drug)
Standard patient cohort
All fifteen patients will receive in total 11 doses of H3K27M peptide vaccine starting with standard radiotherapy (RT) and 14 doses of the human anti-PD-L1 antibody Atezolizumab/ Tecentriq® (every three weeks, q3w) starting four weeks after completion of RT. The first 3 vaccines will be given bi-weekly (q2w) in combination with RT. One dose of vaccination will be given at the beginning of recovery (RE) period following RT. Vaccines 5-11 (q6w) will be initiated with Atezolizumab after completion of RE. The H3K27M peptide vaccine is administered in combination with topical Imiquimod that serves as an adjuvant.
For safety reasons, the first three patients will be enrolled sequentially: Each patient will receive the first vaccination at the earliest 28 days after the previous patient has received the first vaccination.
干预措施: H3K27M peptide vaccine (Biological)
结局指标
主要结局
Assessment of safety of repeated fixed dose vaccinations with the H3K27M peptide vaccine administered with radiotherapy and Atezolizumab in patients with H3K27M-mutant gliomas. Primary safety endpoint is the Regime Limiting Toxicity (RLT).
时间窗: Through study completion, an average of one year
Safety of H3K27M peptide vaccine administered with radiotherapy and Atezolizumab. Primary safety endpoint is the Regime Limiting Toxicity (RLT).
Assessment of immunogenicity of repeated fixed dose vaccinations with the H3K27M peptide vaccine administered with radiotherapy and Atezolizumab in patients with H3K27M-mutant gliomas.
时间窗: From Day 1 until the date of study termination (until day 540); approximately 16 times
Immunogenicity (Immune response Yes/No) will be assessed for all evaluable patients. The primary immunogenicity endpoint is the presence of an H3K27M-specific T-cell response. H3K27M-specific T cell responses are measured on Peripheral Blood Mononuclear Cells (PBMC) using IFN-gamma ELISpot.
次要结局
- Progression-free survival (PFS)(From day of first diagnosis until the date of first documented progression or date of death from any cause, whichever came first, assessed up to the date of study termination (approximately until day 540))
- Analyze the association between immunogenicity and the clinical outcome parameters PFS(Through study completion, an average of one year)
- Overall response rate (ORR)(Baseline visit to end of study (approximately until day 540))
- Analyze the association between immunogenicity and the clinical outcome parameters ORR(Through study completion, an average of one year)