A Multi-Center, Open-Label, Single-Arm Trial to Evaluate Efficacy, Pharmacokinetics, and Safety and Tolerability of IGSC 20% in Subjects With Primary Immunodeficiency
试验速览
- 阶段
- 3 期
- 状态
- 已完成
- 入组人数
- 61
- 试验地点
- 45
- 主要终点
- Rate of Serious Bacterial Infection (SBI) Per Participant Per Year
研究概览
简要总结
Approximately 60 subjects will be enrolled in order to have approximately 20 adult subjects and 20 pediatric subjects treated with subcutaneously administered Immune Globulin Subcutaneous (Human), 20% Caprylate/Chromatography Purified (IGSC 20%) who complete the entire study. This study will include 3 study stages: Screening/Previous Regimen Phase, IGSC 20% Treatment Stage 1 (13 IGSC 20% weekly doses), and IGSC 20% Treatment Stage 2 (39 IGSC 20% weekly doses). A total of 52 doses of IGSC 20% will be administered with a final follow-up visit 1 week after the last dose at Week 53. Subjects/caregivers will be trained on self-administration of IGSC 20% by the clinical site personnel.
详细描述
This is a prospective, multi-center, open-label, single-arm, efficacy, PK, safety and tolerability study of IGSC 20% in subjects with PI. Approximately 60 subjects will be enrolled in order to have approximately 20 adult subjects and 20 pediatric subjects treated with subcutaneously administered IGSC 20% who complete the entire study.
This study will include 3 study stages: Screening/Previous Regimen Phase, IGSC 20% Treatment Stage 1 (13 IGSC 20% weekly doses), and IGSC 20% Treatment Stage 2 (39 IGSC 20% weekly doses).
Previous Regimen Phase: Subjects will be infused with their current ongoing ("previous regimen") intravenous immune globulin/subcutaneous immune globulin (IVIG/SCIG) regimen (pIV/pSC) in the clinic to obtain 2 trough immunoglobulin G (IgG) levels (obtained prior to each pIV/pSC infusion) on each subject's "previous regimen".
20% IGSC Treatment Stage 1: The first dose of IGSC 20% will be administered at the clinical site immediately after Baseline assessments are complete (SC#1). All subjects will receive 13 IGSC 20% infusions at weekly intervals. IgG trough blood levels will be measured at all (except SC#3) study visits All other doses of IGSC 20% may be infused at home (once properly trained) or in the clinic. The Treatment Stage 1 dose will continue into IGSC 20% Treatment Stage 2.
IGSC 20% Treatment Stage 2: The IGSC 20% dose (mg/kg) will remain constant with no dose adjustment permitted in this phase, unless it is absolutely medically necessary. While all subjects will have a SC#17 clinic visit and standard assessments, serial pharmacokinetics (PK) sampling will only be performed in a subset of adult subjects:
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
- 2 Years 至 75 Years（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Pre-existing diagnosis of PI with features of hypogammaglobulinemia requiring IgG replacement therapy
- •No serious bacterial infection within the 3 months prior to Screening and has no serious bacterial infections (SBIs) up to the time of the Baseline Visit
- •Currently on IgG replacement therapy (stable regimen [dose and dosing interval] via IV or SC infusion) for ≥ 3 consecutive months at a dosage of at least 200 mg/kg per infusion
- •Documented (within previous 3 months) of an IgG trough level of ≥ 500 mg/dL on current IgG replacement therapy regimen
- •Screening/pre-Baseline trough IgG levels must be ≥ 500 mg/dL.
排除标准
- •Known serious adverse reaction to immunoglobulin or any severe anaphylactic reaction to blood or any blood-derived product
- •History of blistering skin disease, clinically significant thrombocytopenia, bleeding disorder, diffuse rash, recurrent skin infections, or other disorders where SC therapy would be contraindicated during the study
- •Isolated IgG subclass deficiency, isolated specific antibody deficiency disorder, or transient hypogammaglobulinemia of infancy
- •Nephrotic syndrome, and/or a history of acute renal failure, and/or severe renal impairment, and/or is on dialysis
- •Known previous infection with or clinical signs and symptoms consistent with current hepatitis B virus or hepatitis C virus infection
- •History of (year prior to Screening or 2 episodes in lifetime) or current diagnosis of deep venous thrombosis or thromboembolism (e.g., myocardial infarction, cerebrovascular accident, or transient ischemic attack)
- •Acquired medical condition known to cause secondary immune deficiency, such as chronic lymphocytic leukemia, lymphoma, multiple myeloma, chronic or recurrent neutropenia (absolute neutrophil count less than 1000/μL [1.0 x 10^9/L]), or human immunodeficiency virus infection/acquired immune deficiency syndrome
- •HIV positive by nucleic acid amplification technology based on a Screening blood sample
- •Uncontrolled arterial hypertension (adult subjects: systolic blood pressure > 160 mmHg and/or diastolic blood pressure > 100 mmHg)
- •Receiving any of the following medications: (a) immunosuppressants including chemotherapeutic agents, (b) immunomodulators, (c) long-term systemic corticosteroids defined as daily dose > 1 mg of prednisone equivalent/kg/day for > 30 days Note: Intermittent courses of corticosteroids of not more than 10 days would not exclude a subject. Inhaled or topical corticosteroids are allowed.
结局指标
主要结局
Rate of Serious Bacterial Infection (SBI) Per Participant Per Year
时间窗: IGSC 20% Treatment Stage 1: Week 1 to 13; IGSC 20% Treatment Stage 2: Week 14 to 53; IGSC 20% Overall: Week 1 to 53
The rate of SBI events per participant per year during IGSC 20% treatment was calculated as the total number of SBI events divided by the total duration of exposure in years across all participants. The 2-sided 98% confidence interval (CI) was determined from a generalized linear model for poisson regression for the log-transformed number of events with log-transformed duration of exposure in years as an offset variable.
次要结局
- Rate of Days of Work/School/Daily Activities Missed Per Participants Per Year Due to Infections and Related Treatment(IGSC 20% Treatment Stage 1: Week 1 to 13; IGSC 20% Treatment Stage 2: Week 14 to 53; IGSC 20% Overall: Week 1 to 53)
- Mean Trough Total IgG Concentration(Previous Regimen Phase: 2 timepoints pre-dose of pIV or pSC between Screening and Baseline (up to 8 weeks). IGSC 20% Phase: Pre-dose of IGSC 20% at Baseline (Week 1), Weeks 2, 5, 9, 13, 17, 18, 20, 24, 28, 32, 36, 40, 44, 48, 52, and at Week 53)
- Rate of Infection of Any Kind Per Participant Per Year(IGSC 20% Treatment Stage 1: Week 1 to 13; IGSC 20% Treatment Stage 2: Week 14 to 53; IGSC 20% Overall: Week 1 to 53)
- Rate of Days on Antibiotics Per Participants Per Year(IGSC 20% Treatment Stage 1: Week 1 to 13; IGSC 20% Treatment Stage 2: Week 14 to 53; IGSC 20% Overall: Week 1 to 53)
- Rate of Hospitalization Due to Infection Per Participants Per Year(IGSC 20% Treatment Stage 1: Week 1 to 13; IGSC 20% Treatment Stage 2: Week 14 to 53; IGSC 20% Overall: Week 1 to 53)