E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Primary Immunodeficiency Diseases (PID) |
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E.1.1.1 | Medical condition in easily understood language |
Primary Immunodeficiency Diseases (PID) |
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E.1.1.2 | Therapeutic area | Body processes [G] - Immune system processes [G12] |
MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The primary objective of the study is to assess serum trough IgG concentrations following weekly administration of IGSC, 20% (Epoch 2) and serum trough IgG concentration after biweekly administration of IGSC, 20% (Epoch 3), in Japanese subjects with PID. |
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E.2.2 | Secondary objectives of the trial |
- To assess serum trough IgG concentrations following every 3-week or every 4-week administration of IGIV (Epoch 1) in Japanese subjects with PID. - To characterize the PK profiles of IGSC, 20% in Japanese subjects with PID following weekly SC administration (Epoch 2). - To evaluate the safety and tolerability of IGSC, 20% (Epoch 2, Epoch 3) and of IGIV (Epoch 1) in Japanese subjects with PID. - To evaluate the efficacy of IGSC, 20% (Epoch 2, Epoch 3) and of IGIV (Epoch 1) in Japanese subjects with PID. - To assess quality of life aspects, treatment satisfaction, and treatment preference of Japanese subjects with PID (Epoch 1, Epoch 2, Epoch 3). |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Be of Japanese descent, defined as born in Japan and having Japanese parents and Japanese maternal and paternal grandparents. 2. Subject must have a documented diagnosis of a form of primary humoral immunodeficiency involving antibody formation and requiring gammaglobulin replacement, as defined according to the IUIS Committee 2017 (Picard et al., 2018). The diagnosis must be confirmed by the Medical Director prior to treatment with IP. 3. Subject is 2 years or older at the time of screening. 4. Written informed consent is obtained from either the subject or the subject's legally authorized representative prior to any study-related procedures and study product administration. 5. Subject has been receiving a consistent dose of IGIV over a period of at least 3 months prior to screening of 200 - 600 mg/kg BW at 3- or 4-week intervals. 6. Subject has a serum trough level of IgG ≥5 g/L at screening. 7. Subject has not had a serious bacterial infection within the 3 months prior to screening. 8. Subject is willing and able to comply with the requirements of the protocol. |
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E.4 | Principal exclusion criteria |
1. Subject has a known history of or is positive at screening for one or more of the following: hepatitis B surface antigen (HBsAg), polymerase chain reaction (PCR) for hepatitis C virus (HCV), PCR for human immunodeficiency virus (HIV) Type 1/2. 2. Abnormal laboratory values at screening meeting any one of the following criteria (abnormal tests may be repeated once to determine if they are persistent): a. Persistent alanine aminotransferase (ALT) and aspartate amino transferase (AST) >2.5 times the upper limit of normal (ULN) for the testing laboratory b. Persistent severe neutropenia (defined as an absolute neutrophil count [ANC] ≤500/mm3) 3.Subject has presence of renal function impairment defined by estimated glomerular filtration rate [eGFR] <60 mL/min/1.73m2 4. Subject has been diagnosed with or has a malignancy (other than adequately treated basal cell or squamous cell carcinoma of the skin or carcinoma in situ of the cervix), unless the disease-free period prior to screening exceeds 5 years. 5. Subject is receiving anti-coagulation therapy or has a history of thrombotic episodes (including deep vein thrombosis, myocardial infarction, cerebrovascular accident, pulmonary embolism) within 12 months prior to screening or a history of thrombophilia. 6. Subject has abnormal protein loss (protein losing enteropathy, nephrotic syndrome). 7. Subject has anemia that would preclude phlebotomy for laboratory studies according to standard practice at the site. 8. Subject has an ongoing history of hypersensitivity or persistent reactions (urticaria, breathing difficulty, severe hypotension, or anaphylaxis) following IV immunoglobulin, SC immunoglobulin, and/or Immune Serum Globulin (ISG) infusions. 9. Subject has immunoglobulin A (IgA) deficiency (IgA less than 0.07g/L), known anti IgA antibodies, and a history of hypersensitivity. 10. Subject is on preventative (prophylactic) systemic antibacterial antibiotics at doses sufficient to treat or prevent bacterial infections, and cannot stop these antibiotics at the time of screening. 11. Subject has active infection and is receiving antibiotic therapy for the treatment of infection at the time of screening. 12. Subject has a bleeding disorder, or a platelet count less than 20,000/μL, or, in the opinion of the investigator, would be at significant risk of increased bleeding or bruising as a result of subcutaneous therapy. 13. Subject has total protein >9 g/dL or myeloma, or macroglobulinemia (IgM) or paraproteinemia. 14. Women of childbearing potential meeting any one of the following criteria: a. Subject presents with a positive pregnancy test. b. Subject is breast feeding. c. Subject intends to begin nursing during the course of the study. d. Subject does not agree to employ adequate birth-control measures (e.g. intrauterine device, diaphragm or condom [for male partner] with spermicidal jelly or foam, or birth control pills/patches) throughout the course of the study. 15. Subject has participated in another clinical study and has been exposed to an IP or device within 30 days prior to study enrollment. 16. Subject is scheduled to participate in another non-observational (interventional) clinical study involving an IP or device during the course of the study. 17. Subject has severe dermatitis that would preclude adequate sites for safe product administration. |
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary endpoint is the total serum trough levels of IgG (total serum trough IgG antibodies) measured during Period 2 of Study Epoch 2 (weekly administration of IGSC, 20%) and during Epoch 3 (biweekly administration of IGSC, 20%). |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
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E.5.2 | Secondary end point(s) |
1. Epoch 1: Total Serum Trough Levels of Immune Globulin G (IgG) Antibodies 2. Epoch 2: Area Under the Curve (AUC) for Total Serum Levels of IgG and IgG Subclasses 3. Epoch 2: Apparent Clearance (CL/F) for Total Serum Levels of IgG and IgG Subclasses 4. Epoch 2: Maximum Concentration (Cmax) for Total Serum Levels of IgG and IgG Subclasses 5. Epoch 2: Minimum Concentration (Cmin) for Total Serum Levels of IgG and IgG Subclasses 6. Epoch 2: Time to Maximum Concentration (Tmax) for Total Serum Levels of IgG and IgG Subclasses 7. Trough Levels of Specific Antibodies to Clinically Relevant Pathogens 8. Number of Participants with Treatment Emergent Adverse Events (TEAEs) 9. Number of Participants with Tolerability Events Related to the Infusion of Investigational Product (IP) 10. Annual Rate of Validated Acute Serious Bacterial Infections (ASBI) 11. Annual Rate of All Infections 12. Number of Days Participants not Able to Attend School or Work to Perform Normal Daily Activities due to Illness/Infection 13. Number of Days Participants on Antibiotics 14. Number of Participants Hospitalized due to Illness or Infection 15. Length of Hospital Stay 16. Number of Participants will Report Acute Physician Visits due to Illness/Infection 17. Health-related Quality of Life (HRQoL): Pediatric Quality of Life Inventory (PedsQL) 18. EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) 19. Health-related Quality of Life (HRQoL): Short Form-36 Health Survey (SF-36) 20. Health Related Quality of Life: Treatment Satisfaction Questionnaire for Medication-9 (TSQM-9) 21. Health Related Quality of Life: Treatment Satisfaction Questionnaire for Life Quality Index (LQI) 22. Health Related Quality of Life: Treatment Preference
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.3 |
Will this trial be conducted at a single site globally?
| No |
E.8.4 | Will this trial be conducted at multiple sites globally? | Yes |
E.8.6 Trial involving sites outside the EEA |
E.8.6.2 | Trial being conducted completely outside of the EEA | Yes |
E.8.6.3 | Specify the countries outside of the EEA in which trial sites are planned |
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E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.2 | In all countries concerned by the trial years | 1 |
E.8.9.2 | In all countries concerned by the trial months | 4 |
E.8.9.2 | In all countries concerned by the trial days | 11 |