A Phase I, Open-Label, Randomized, Pharmacokinetic, Pharmacodynamic, and Safety Study of Etrolizumab Followed by Open-Label Extension and Safety Monitoring in Pediatric Patients From 4 Years to Less Than 18 Years Of Age With Moderate to Severe Ulcerative Colitis or Moderate To Severe Crohn's Disease
试验速览
- 阶段
- 1 期
- 状态
- 终止
- 入组人数
- 24
- 试验地点
- 5
- 主要终点
- Maximum Serum Concentration (Cmax) of Etrolizumab After First and Last Dose During the Randomized Treatment Phase
研究概览
简要总结
This study will evaluate pharmacokinetics, pharmacodynamics and safety of etrolizumab in pediatric patients of 4 to <18 years of age with moderate to severe ulcerative colitis (UC) or with moderate to severe Crohn's disease (CD).
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 4 Years 至 17 Years（Child）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Age of 4 years to <18 years at the time of signing the Informed Consent Form.
- •Weight of 13 kilograms (kg) or more
- •Diagnosis of ulcerative colitis (UC) or Crohn's Disease (CD) confirmed by biopsy and established for ≥3 months (i.e., after first diagnosis by a physician according to American College of Gastroenterology [ACG] guidelines) prior to screening
- •Inadequate response, loss of response or intolerance to prior immunosuppressants and/or corticosteroid treatment and/or anti-tumor necrosis factor (TNF) therapy
- •For postpubertal females of childbearing potential: agreement to remain abstinent (refrain from heterosexual intercourse) or use acceptable contraceptive methods during the treatment period and for at least 24 weeks after the last dose of etrolizumab.
- •For male patients: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraceptive measures, and agreement to refrain from donating sperm
排除标准
- •Pregnant or lactating
- •Lack of peripheral venous access
- •Congenital or acquired immune deficiency
- •Neurological conditions or diseases that may interfere with monitoring for progressive multifocal leukoencephalopathy (PML)
- •History of demyelinating disease
- •History of cancer, including hematologic malignancy, solid tumors, and carcinoma in situ, within 5 years before screening
- •Exclusion Criteria Related to Inflammatory Bowel Disease:
- •Prior extensive colonic resection, subtotal or total colectomy, or planned surgery
- •Past or present ileostomy or colostomy
- •Diagnosis of indeterminate colitis
- •Suspicion of ischemic colitis, radiation colitis, or microscopic colitis
- •Diagnosis of toxic megacolon within 12 months of initial screening visit
- •Abdominal abscess
- •A history or current evidence of colonic mucosal dysplasia
- •Patients with fixed symptomatic stenosis of the intestine
- •Patients with history or evidence of adenomatous colonic polyps that have not been removed
- •Exclusion Criteria Related to Ulcerative Colitis:
- •Severe extensive colitis per investigator judgment that colectomy is imminent
- •Exclusion Criteria Related to Crohn's Disease:
- •Sinus tract with evidence for infection (e.g., purulent discharge) in the clinical judgment of the investigator
- •Short-bowel syndrome
- •Evidence of abdominal or perianal abscess
- •Expected to require surgery to manage CD-related complications during the study
- •Exclusion Criteria Related to Prior or Concomitant Therapy:
- •Any prior treatment with anti-integrin agents (including natalizumab, vedolizumab, and efalizumab), ustekinumab, anti-adhesion molecules (e.g., anti-MAdCAM-1), or rituximab
- •Use of IV steroids within 30 days prior to screening with the exception of a single administration of IV steroid
- •Use of agents that deplete B or T cells (e.g., alemtuzumab or visilizumab) within 12 months prior to Day 1, with the exception of AZA and 6-MP
- •Use of cyclosporine, tacrolimus, sirolimus, or mycophenolate mofetil (MMF) within 4 weeks prior to Day 1
- •Use of other biologics (e.g. anti-TNF) within 8 weeks before dosing (unless drug level is below detectability before completion of the 8-week interval)
- •Chronic nonsteroidal anti-inflammatory drug (NSAID) use
- •Patients who are currently using anticoagulants
- •Apheresis (i.e., Adacolumn apheresis) within 2 weeks prior to Day 1
- •Received any investigational treatment including investigational vaccines within 12 weeks prior to Day 1 of the study or 5 half-lives of the investigational product, whichever is greater
- •History of moderate or severe allergic or anaphylactic/anaphylactoid reactions to chimeric, human, or humanized antibodies, fusion proteins, or murine proteins or hypersensitivity to etrolizumab (active drug substance) or any of the excipients (L-histidine, L-arginine, succinic acid, polysorbate 20)
研究组 & 干预措施
Etrolizumab Q4W
Etrolizumab 1.5 milligrams per kilogram of body weight (mg/kg) was administered by subcutaneous (SC) injection once every 4 weeks (Q4W) for a total of 4 doses over the course of the 24-week randomized treatment phase (16-week treatment period plus 8-week safety follow-up). Participants were then given the option to participate in the 312-week open-label extension (OLE) treatment phase with etrolizumab 1.5 mg/kg SC Q4W followed by the 104-week safety surveillance phase (no etrolizumab treatment) to monitor for progressive multifocal leukoencephalopathy (PML). All participants who chose not to enter the OLE phase after the 24-week randomized treatment phase entered the 104-week PML monitoring phase.
干预措施: Etrolizumab (Drug)
Etrolizumab Q8W
Etrolizumab 3.0 mg/kg was administered by subcutaneous (SC) injection once every 8 weeks (Q8W) for a total of 2 doses over the course of the 24-week randomized treatment phase (16-week treatment period plus 8-week safety follow-up). Participants were then given the option to participate in the 312-week open-label extension (OLE) treatment phase with etrolizumab 1.5 mg/kg SC Q4W followed by the 104-week safety surveillance phase (no etrolizumab treatment) to monitor for progressive multifocal leukoencephalopathy (PML). All participants who chose not to enter the OLE phase after the 24-week randomized treatment phase entered the 104-week PML monitoring phase.
干预措施: Etrolizumab (Drug)
结局指标
主要结局
Maximum Serum Concentration (Cmax) of Etrolizumab After First and Last Dose During the Randomized Treatment Phase
时间窗: Arm Etro Q4W: Day 1, 84 and Arm Etro Q8W: Day 1, 56
Etrolizumab concentrations in all pharmacokinetics (PK) samples were measured using a validated assay method. Non-compartmental analysis methods were employed to calculate PK parameters.
Time to Maximum Serum Concentration (Tmax) of Etrolizumab After First and Last Dose During the Randomized Treatment Phase
时间窗: Arm Etro Q4W: Days 1, 84 and Arm Etro Q8W: Days 1, 56
Etrolizumab concentrations in all pharmacokinetics (PK) samples were measured using a validated assay method. Non-compartmental analysis methods were employed to calculate PK parameters.
Area Under the Concentration-Time Curve Within the Last Dosing Interval (AUC-tau) of Etrolizumab During the Randomized Treatment Phase
时间窗: Arm Etro Q4W: Days 56, 84, 88, 98, 112 and Arm Etro Q8W: Day 56, 60, 70, 84, 88, 98, 112
Etrolizumab concentrations in all pharmacokinetics (PK) samples were measured using a validated assay method. Non-compartmental analysis methods were employed to calculate PK parameters.
Elimination Half-Life (t1/2) of Etrolizumab After Last Dose During the Randomized Treatment Phase
时间窗: Arm Etro Q4W: Days 84, 88, 98, 112, 126, 140, 168 and Arm Etro Q8W: Days 56, 60, 70, 84, 88, 98, 112, 126, 140, 168
Etrolizumab concentrations in all pharmacokinetics (PK) samples were measured using a validated assay method. Non-compartmental analysis methods were employed to calculate PK parameters.
Serum Trough Concentration (Ctrough) of Etrolizumab at the End of Each Dosing Interval During the Randomized Treatment Phase
时间窗: Arm Etro Q4W: Predose on Days 28, 56, 84, 112 and Arm Etro Q8W: Predose on Days 56, 112
Etrolizumab concentrations in all pharmacokinetics (PK) samples were measured using a validated assay method.
Percentage of Baseline Absolute Numbers of Beta7 Receptor-Expressing Gut Homing CD3, CD4, and CD8 T Cells and CD19 B Cells With Unoccupied Beta7 Receptors in Peripheral Blood, Assessed by Flow Cytometry, During the Randomized Treatment Phase
时间窗: Predose (dosing days only) at Baseline (Day 1) and on Days 4, 56, 84, 98, and 112 (Treatment Period), and Days 126, 140, and 168 (Follow-Up Period)
Target engagement of etrolizumab was assessed via measurement of Beta7 receptor occupancy on Beta7 receptor-expressing gut homing lymphocyte subsets in peripheral blood, including CD3, CD4, and CD8 T cells and CD19 B cells, using qualified flow cytometry methods. A decrease to 0% of baseline (BL) in median absolute cell counts of Beta7 receptor-expressing T and B cell subsets with unoccupied Beta7 receptors following etrolizumab treatment indicated maximal receptor occupancy by etrolizumab.
次要结局
- Number of Participants With Adverse Events by Highest Severity Grade, Assessed According to National Cancer Institute Common Terminology Criteria for Adverse Events, Version 4.0 (NCI-CTCAE v4.0), During the Randomized Treatment Phase(From Baseline until 12 weeks (Q4W arm only) or 16 weeks (Q8W arm only) after the last dose of study drug during the randomized treatment phase (up to 24 weeks))
- Number of Participants With Serious Infection-Related Adverse Events During the Randomized Treatment Phase(From Baseline until 12 weeks (Q4W arm only) or 16 weeks (Q8W arm only) after the last dose of study drug during the randomized treatment phase (up to 24 weeks))
- Number of Participants With Hypersensitivity Reactions During the Randomized Treatment Phase(From Baseline until 12 weeks (Q4W arm only) or 16 weeks (Q8W arm only) after the last dose of study drug during the randomized treatment phase (up to 24 weeks))
- Number of Participants With Malignancies During the Randomized Treatment Phase(From Baseline until 12 weeks (Q4W arm only) or 16 weeks (Q8W arm only) after the last dose of study drug during the randomized treatment phase (up to 24 weeks))
- Number of Participants With Anti-Drug Antibodies (ADAs) to Etrolizumab at Baseline and Post-Baseline During the Randomized Treatment Phase(Predose (dosing days only) on Days 1, 28, 84, 112, and 168 (up to the end of the randomized treatment phase at Week 24))
- Long-Term Safety of Etrolizumab: Number of Participants With Adverse Events by Highest Severity Grade, Assessed According to NCI-CTCAE v4.0(OLE Period: From end of Week 24 to end of 12-week safety follow-up (up to 195 weeks); PML Period: After completion of safety follow up in Randomized Treatment phase or after completion of safety follow up after OLE treatment, up to approximately 92 weeks)
- Long-Term Safety of Etrolizumab: Number of Participants With Serious Infection-Related Adverse Events(OLE Period: From end of Week 24 to end of 12-week safety follow-up (up to 195 weeks); PML Period: After completion of safety follow up in Randomized Treatment phase or after completion of safety follow up after OLE treatment, up to approximately 92 weeks)
- Long-Term Safety of Etrolizumab: Number of Participants With Hypersensitivity Reactions(OLE Period: From end of Week 24 to end of 12-week safety follow-up (up to 195 weeks); PML Period: After completion of safety follow up in Randomized Treatment phase or after completion of safety follow up after OLE treatment, up to approximately 92 weeks)
- Long-Term Safety of Etrolizumab: Number of Participants With Malignancies(OLE Period: From end of Week 24 to end of 12-week safety follow-up (up to 195 weeks); PML Period: After completion of safety follow up in Randomized Treatment phase or after completion of safety follow up after OLE treatment, up to approximately 92 weeks)
- Long-Term Safety of Etrolizumab: Number of Participants With Anti-Drug Antibodies (ADAs) to Etrolizumab at Baseline and Post-Baseline(Predose (dosing days only) at Baseline (Day 1), Days 28, 84, and 112, Weeks 24, 36, 72, and 120, and every 12 weeks thereafter for up to 4.25 years)
- Number of Participants With Confirmed Progressive Multifocal Leukoencephalopathy (PML) During the Post-Treatment PML Monitoring Phase(PML Period: After completion of safety follow up in Randomized Treatment period or after completion of safety follow up after OLE treatment, up to approximately 92 weeks)