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Trial · NCT03157037

Open-Label Phase II Study to Evaluate the Efficacy and Safety of IdeS in Anti-GBM Disease

NCT03157037, Phase 2, Completed, Mårten Segelmark; results first posted 2022-04-07

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. Open-Label Phase II Study to Evaluate the Efficacy and Safety of IdeS in Anti-GBM Disease. Trials, record NCT03157037. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT03157037

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
Open-Label Phase II Study to Evaluate the Efficacy and Safety of IdeS in Anti-GBM Disease
NCT number
NCT03157037
Status
Completed
Phases
Phase 2
Enrollment
15 participants, actual
Lead sponsor
Mårten Segelmark
Conditions
Anti-Glomerular Basement Membrane Antibody Disease
Interventions
Imlifidase
First posted
2017-05-17
Last updated
2022-04-07
Results first posted
2022-04-07

Source ClinicalTrials.gov

Registered outcomes16

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryNumber of Patients With Independent Renal Function at 6 Months6 months after dosingNumber of patients without need for dialysis at 6 months. A patient with independent renal function is defined as a patient without need for dialysis.
SecondaryNumber of Patients With Independent Renal Function at 3 Months3 months after dosingNumber of patients without need for dialysis at 3 months. A patient with independent renal function is defined as a patient without need for dialysis.
SecondaryRenal Function at 3 and 6 Months3 and 6 months after imlifidase dosing
Estimated glomerular filtration rate (eGFR) is a measure of kidney function. eGFR was calculated based on p-creatinine according to the modification of diet in renal disease (MDRD) equation. eGFR for a kidney with normal function is above 90 mL/min/1.73m\^2. Reduced kidney function is characterised by a decreased eGFR value.
SecondaryNumber of Patients With Renal Function Over Time Stratified by Ranges of eGFRPre-imlifidase, 1, 3 and 6 months after imlifidase dosing
eGFR is a measure of kidney function. eGFR has been calculated based on p-creatinine according to the modification of diet in renal disease (MDRD) equation. eGFR for a kidney with normal function is above 90 mL/min/1.73m\^2. Reduced kidney function is characterised by a decreased eGFR value. Number of patients per 4 different eGFR categories (0-15, 15-30, 30-60, ≥60 mL/min/1.73m\^2) are presented. A shift towards a higher category during the study indicates improved renal function over time.
SecondaryNumber of Patients With Anti-GBM Antibodies Above a Toxic Level Stratified by Number of Study VisitsPredose up to 6 months after dosing
Anti-GBM antibodies above a toxic level defined as \>20 U/mL. The level of anti-GBM antibodies was measured centrally using the Phadia ELiA(TM) anti-GBM kit. The enzyme-linked immunoassay (ELiA) is a fluorescence enzyme immunoassay.
SecondaryNumber of Patients With Haematuria (Blood in Urine)At 6 months after dosing
Haematuria was assessed using urine dipstick. The result was presented as: Negative/Trace/+1/+2/+3/+4. In the analysis results being +2 or above are considered as relevant. Haematuria was an inclusion criterion. All 15 patients had haematuria when included in the study.
SecondaryChange in Proteinuria During the StudyPre-imlifidase, 3 and 6 months after imlifidase dosingChange in proteinuria measured as u-albumin/creatinine (g/mol) in morning void during the study .
SecondaryNumber of PLEXs Needed Over TimePre-screening and up to Day 93 after imlifidase dosingNumber of PLEXs needed before anti-GBM antibodies are below toxic levels. PLEX was initiated at the discretion of the investigator throughout the study.
SecondaryPharmacokinetics of Imlifidase (Cmax)Pre-dose, 45min, 2h, 6h, 24h, Day3, Day 7, Day 10, and Day15Maximum observed plasma concentration of IdeS following dosing (Cmax)
SecondaryPharmacokinetics of Imlifidase (AUC)Pre-dose, 45min, 2h, 6h, 24h, Day3, Day 7, Day 10, and Day15Area under the plasma concentration versus time curve (AUC)

Outcomes16

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARYNumber of Patients With Independent Renal Function at 6 Months6 months after dosingParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYNumber of Patients With Independent Renal Function at 3 Months3 months after dosingParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYRenal Function at 3 and 6 Months3 and 6 months after imlifidase dosing
Only patients who were alive and dialysis independent at respective analysis time (3 and 6 months) were included in this analysis because assessment of eGFR is not considered meaningful for patients in dialysis.
mL/min/1.73m^2MEAN
SECONDARYNumber of Patients With Renal Function Over Time Stratified by Ranges of eGFRPre-imlifidase, 1, 3 and 6 months after imlifidase dosingOnly patients who were alive and dialysis independent at each specific analysis time are included in this analysis because eGFR is not applicable for patients in dialysis.ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYNumber of Patients With Anti-GBM Antibodies Above a Toxic Level Stratified by Number of Study VisitsPredose up to 6 months after dosingNumber of study visits with a toxic level are presented instead of number of patient days with an anti-GBM level \>20 U/mL as was the original plan.participantsNUMBER
SECONDARYNumber of Patients With Haematuria (Blood in Urine)At 6 months after dosingData was missing for 5 of the 15 patients at 6 months.Patients with haematuria (+2 or above)NUMBER
SECONDARYChange in Proteinuria During the StudyPre-imlifidase, 3 and 6 months after imlifidase dosingSome patients had missing data at some visitsg/molMEAN
SECONDARYNumber of PLEXs Needed Over TimePre-screening and up to Day 93 after imlifidase dosingNumber of PLEX performedNUMBER
SECONDARYPharmacokinetics of Imlifidase (Cmax)Pre-dose, 45min, 2h, 6h, 24h, Day3, Day 7, Day 10, and Day15µg/mLGEOMETRIC_MEAN
SECONDARYPharmacokinetics of Imlifidase (AUC)Pre-dose, 45min, 2h, 6h, 24h, Day3, Day 7, Day 10, and Day15h*µg/mLGEOMETRIC_MEAN

Results by group157

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
Number of Patients With Independent Renal Function at 6 MonthsDialysis Dependent at Baseline5Participants
Number of Patients With Independent Renal Function at 6 MonthsDialysis Independent at Baseline5Participants
Number of Patients With Independent Renal Function at 6 MonthsAll Patients10Participants
Number of Patients With Independent Renal Function at 3 MonthsDialysis Dependent at Baseline4Participants
Number of Patients With Independent Renal Function at 3 MonthsDialysis Independent at Baseline5Participants
Number of Patients With Independent Renal Function at 3 MonthsAll Patients9Participants
Renal Function at 3 and 6 MonthsDialysis Dependent at BaselineeGFR at 3 months20.3Standard Deviation 4.7mL/min/1.73m^2
Renal Function at 3 and 6 MonthsDialysis Independent at BaselineeGFR at 3 months26.5Standard Deviation 11.0mL/min/1.73m^2
Renal Function at 3 and 6 MonthsAll PatientseGFR at 3 months23.8Standard Deviation 8.9mL/min/1.73m^2
Renal Function at 3 and 6 MonthsDialysis Dependent at BaselineeGFR at 6 months24.8Standard Deviation 6.6mL/min/1.73m^2

Participant flow3

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Overall StudySTARTEDTreatment HMed-IdeS15
Overall StudyCOMPLETEDTreatment HMed-IdeS14
Overall StudyNOT COMPLETEDTreatment HMed-IdeS1

Adverse events70

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

TypeEventOrgan systemGroupAffectedAt riskEvents
otherAnaemiaBlood and lymphatic system disordersSafety Analysis Set6156
otherTinnitusEar and labyrinth disordersSafety Analysis Set2153
otherForeign body sensation in eyesEye disordersSafety Analysis Set1151
otherDiarrhoeaGastrointestinal disordersSafety Analysis Set2152
otherNauseaGastrointestinal disordersSafety Analysis Set4154
otherVomitingGastrointestinal disordersSafety Analysis Set2152
otherFatigueGeneral disordersSafety Analysis Set1151
otherCryoglobulinaemiaImmune system disordersSafety Analysis Set1151
otherHypogammaglobulinaemiaImmune system disordersSafety Analysis Set1151
otherClostridium difficile infectionInfections and infestationsSafety Analysis Set1151

Adverse event totals3

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortalitySafety Analysis Set115
Total, other adverse eventsSafety Analysis Set1515
Total, serious adverse eventsSafety Analysis Set515

Papers3

The papers the trial lists on ClinicalTrials.gov.

PMIDListed asSource
20616173BACKGROUNDPubMed
29162595BACKGROUNDPubMed
37385828DERIVEDPubMed

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons0

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

None in this release.

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

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