E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Chronic Kidney Disease with donor specific antibodies (ASA) |
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E.1.1.1 | Medical condition in easily understood language |
Chronic Kidney Disease with antibodies to donated organ |
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E.1.1.2 | Therapeutic area | Not possible to specify |
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 |
To asses the IdeS efficacy in creating a negative crossmatch test |
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E.2.2 | Secondary objectives of the trial |
To determine DSA levels at multiple times
To determine time to creating a negative CDC crossmatch test
To determine time to creating a negative FACS crossmatch test
To evaluate safety parameters
To monitor kidney function after IdeS treatment
To establish the pharmacokinetic (PK) profile of IdeS
To establish the pharmacodynamic (PD) profile of IdeS
To establish the immunogenicity profile (ADA) of IdeS |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
Male or female age 18-70 years at the time of screening
Patients on the kidney transplant waitlist who have previously undergone desensitization unsuccessfully or in whom effective desensitization will be highly unlikely. The breadth and strength of sensitization will predict an extremely low likelihood of successful desensitization or kidney paired donation. For Sweden eligible patients must fulfil the criteria to be listed on the Scandia Transplant Acceptable Mismatch Program (STAMP) - on transplantation waiting list more than 1 year - HLA antibody status with PRA more than or equal to 80% based on CDC and/or solid phase assay - HLA status confirmed by two consecutive samples over a period of more than 3 months - proven reactivity against HLA class I or II andtigens or both - last tested sample drawn less than 3 months before acceptande
Patients with a medically acceptable live donor are eligible if they fulfil the criteria to be listed on the Scandinavian Transplant Kidney Exchange Program (STEP) - recipient with donor specific antibodies - positive crossmatch between recipient and live donor.
Patients with a live or deceased donor with a positive crossmatch test.
Patient must be able to understand and sign the informed consent
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E.4 | Principal exclusion criteria |
Previous treatment with IdeS
Previous high dose IVIg treatment (2 g/kg BW) within 28 days prior to IdeS treatment
Lactating or pregnant females, women of child-bearing age who are not willing or able to practice FDA-approved forms of contraception. European centers will follow guidelines issued by EMAs Clinical Trial Facilitation Group (CTFG) 2014-09-15 as follows:
a - combined (estrogen and progestogen containing) hormonal contraception associated with inhibition of ovulation: i/ oral - ii/intravaginal - iii/ transdermal
b. - progesterone-only hormonal contraception associated with inhibition of ovulation: i/oral - ii/ injectable
c. - vasectomized partner provided that partner is the sole sexual partner of the trial participant and that the vasecomized partner has received medical assessment of the surgical success.
HIV-positive patients
Patients with HBV infection or HCV infection
Patients with active tuberculosis
A significantly abnormal general serum screening lab result according to the investigator’s judgement.
Severe other conditions requiring treatment and close monitoring, e.g. cardiac failure, unstable coronary disease or oxygen dependent COPD
Patients with active CMV or EBV infection
Patients with a history of clinically significant thrombotic episodes, and patients with active peripheral vascular disease
Allergy/sensivity to any of the ingredients of IMP
Patients who have a live donor and test positive for ImmunoCAP anti-IdeS IgE
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E.5 End points |
E.5.1 | Primary end point(s) |
Efficacy defined as IdeS ability to create a negative crossmatch test within 24 hours after IdeS dosing |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Within 24 hours after IdeS dosing |
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E.5.2 | Secondary end point(s) |
DSA levels at pre-dose and 2, 6, 24 and 48 hours and days 7, 14, 21, 28, 64, 90, 120 and 180 post IdeS treatment
Time to creating a negative CDC crossmatch test
Time to creating a negative FACS crossmatch test
Safety parameters (adverse events, clinical laboratory tests, vital signs and ECGs)
Kidney function after IdeS treatment assessed by, filtration (eGFR), creatinine and proteinuria up to 180 days post treatment
Pharmacokinetic (PK) profile of IdeS up to day 14
Pharmacodynamic (PD) profile of IdeS (cleavage and recovery of IgG) up to day 180 post IdeS
Immunogenicity profile of IdeS by measuring anti-drug antibodies (ADA)
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
DSA levels at pre-dose and 2, 6, 24 and 48 hours and days 7, 14, 21, 28, 64, 90, 120 and 180 post IdeS treatment
Safety parameters at 2, 6, 24 and 48 hours and days 3, 7, 9, 14, 21, 28, 64, 90, 120 and 180 post IdeS treatment
Kidney function at 24 and 48 hours and days 3, 7, 9, 14, 21, 28, 64, 90, 120 and 180 post IdeS treatment
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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 | Yes |
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 | Yes |
E.6.13.1 | Other scope of the trial description |
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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) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
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 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 2 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
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E.8.7 | Trial has a data monitoring committee | Yes |
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.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | 3 |
E.8.9.1 | In the Member State concerned days | 0 |
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 | 5 |
E.8.9.2 | In all countries concerned by the trial days | 0 |