Evicenter
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Imlifidase

Kidney transplantation in highly sensitized patients

Manufacturer
Hansa Biopharma
Regulatory submission
BLA submitted December 2025
85 sources

Section 4 of 6

Clinical evidence

159 evidence topics · 30 sources

Study summaries

ConfIdeS

Objective
Location and study date
Study design
Eligibility criteria
Treatment
Study outcomes
Rationale for using estimated glomerular filtration rate at 12 months as the primary endpoint
Validation of the primary endpoint as a surrogate for long-term clinical benefit

No evidence found.

Statistical analysis description
Number of participants (Planned and analyzed)
Description of analysis sets

No evidence found.

Results
Participant disposition
Timing of transplantation
DispositionParticipants
Imlifidase arm: transplanted at randomization“28”
Control arm: transplanted at randomization“3”
Control arm: additional later transplants“12”
Baseline characteristics

No evidence found.

Efficacy results
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results
Treatment-emergent adverse events and patient survival
OutcomeQuoted result
Treatment-emergent adverse events, total events“386”
Patient survival: imlifidase“97%”
Patient survival: control“100%”
Study limitations
Summary

ConfIdeS randomized 64 participants but was open label, and its control arm allowed several desensitization approaches or continued waiting. The comparison therefore does not isolate imlifidase against one standardized active regimen. The rejection counts use denominators of 28 and 13 rather than the complete randomized population, so they should not be interpreted as randomized-population rejection risks. The reported primary comparison concerns kidney function at 12 months, not a demonstrated long-term survival benefit.

Highdes

Objective
Location and study date
Recruitment start and participating countries
Study characteristicQuoted record
Recruitment start“30 Sep 2016”
Participating country“Sweden”
Participating country“France”
Participating country“United States”
Study design
Eligibility criteria
Treatment
Dosing groups
RegimenDose
Single intravenous infusion“0.25 mg/kg”
Two intravenous infusions“2 x 0.25 mg/kg”
Study outcomes
Rationale for using crossmatch conversion within 24 hours as the primary endpoint
Statistical analysis description
Number of participants (Planned and analyzed)
Screened and enrolled populations
Description of analysis sets
Registry analysis populations and statistical approach
AnalysisQuoted record
Primary efficacy analysis set“Full analysis”
Primary endpoint analysis population“19”
Endpoint summaries“descriptive statistics”
Results
Participant disposition
Completion by dosing group
DispositionOne infusionTwo infusions
Started“16”“3”
Completed“13”“3”
Baseline characteristics
Median sensitization
Baseline characteristicQuoted value
Median calculated panel-reactive antibody“99.83%”
Efficacy results
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results
Study limitations
Summary

Highdes enrolled 19 participants without a randomized control group. Its primary endpoint was crossmatch conversion, which enables transplantation but does not alone establish long-term graft survival or freedom from rejection. The five-year single-site report concerns 8 participants from the same trial, not an additional independent trial population.

13-HMedIdeS-03

Objective
Location and study date
Country and recruitment start
Study characteristicQuoted record
Country“Sweden”
Recruitment start“04 Jun 2015”
Study design
Eligibility criteria

No evidence found.

Treatment
Intravenous dose groups
Study outcomes
Rationale for using safety parameters as the primary endpoint

Not applicable.

Statistical analysis description
Number of participants (Planned and analyzed)
Enrollment
Description of analysis sets
Results
Participant disposition
Study completion
DispositionFirst dose groupSecond dose group
Completed“5”“5”
Baseline characteristics
Sex distribution
Efficacy results
HLA antibody levels acceptable for transplantation within 24 hours
OutcomeFirst dose groupSecond dose group
Participants meeting the endpoint“5”“5”
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results
Adverse events through the study follow-up period
OutcomeFirst dose groupSecond dose group
Adverse events, total events“52”“54”
Study limitations
Summary

This unblinded study enrolled 10 participants in two dose groups of 5 and used descriptive analyses. It does not provide a randomized estimate of treatment effect. Its 52 and 54 adverse-event counts are numbers of events, not numbers of affected participants. The combined early-trial publication should not be added to this enrollment count as an independent population.

14-HMedIdeS-04

Objective
Location and study date
Study design
Eligibility criteria
Treatment
Study outcomes
Rationale for using allograft rejection as the primary endpoint
Endpoint-specific validation

No evidence found.

Statistical analysis description
Number of participants (Planned and analyzed)
Protocol planned enrollment
Sponsor-reported enrollment for NCT02426684
PopulationParticipants
Enrolled“17”
United States participants in the combined publication
PopulationParticipants
United States subgroup in the earlier publication“14”
Description of analysis sets
Results
Participant disposition

No evidence found.

Baseline characteristics

No evidence found.

Efficacy results
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results
Combined early-trial safety results: pooled, not specific to the United States study
OutcomeQuoted count
Serious adverse events“38”
Participants with serious adverse events“15”
Events adjudicated as possibly related to IdeS“5”
Participants with antibody-mediated rejection across both countries“10”
United States participants with antibody-mediated rejection“7”
Study limitations
Summary

The protocol describes an exploratory open-label study that was not powered for efficacy endpoints. Planned enrollment was 20 participants, and the later sponsor update reported 17. The earlier combined publication included 14 United States participants and reported several outcomes across 25 participants from both countries. Those pooled efficacy and safety counts must not be treated as outcomes for all 17 participants in this study alone.

20-HMedIdeS-19

Objective
Location and study date
Recruitment and geographic coverage
Study characteristicQuoted record
First participant enrolled“May 2022”
Participating transplant centers“22”
Participating countries“11”
Study design
Eligibility criteria
Recipient eligibility
CriterionQuoted value
Recipient age range, years“18-75”
Sensitization threshold“≥95%”
Treatment
Study outcomes
Rationale for using graft failure-free survival at one year as the primary endpoint
Validation against a randomized comparator

No evidence found.

Statistical analysis description
Number of participants (Planned and analyzed)
Description of analysis sets
Analysis sets in the sponsor presentation
PopulationImlifidaseConcurrent reference
Safety analysis set“51 (100)”“63 (100)”
Intention-to-treat analysis set“50 (98.0)”“63 (100)”
Results
Participant disposition
Trial completion in the sponsor presentation
DispositionImlifidaseConcurrent reference
Completed trial“48 (94.1)”“57 (90.5)”
Baseline characteristics
Baseline age in the sponsor presentation
CharacteristicImlifidaseConcurrent reference
Mean age, years“50.1”“55.6”
Efficacy results
One-year kidney function in the results announcement
OutcomeQuoted value
Mean eGFR, mL/min/1.73 m²“52.4”
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results
Serious treatment-emergent adverse events in the sponsor presentation
PopulationParticipants
Imlifidase safety population with serious treatment-emergent adverse events“28 (54.9)”
Study limitations
Summary

The presentation distinguishes a safety population of 51 imlifidase-treated participants from an intention-to-treat population of 50. Its concurrent reference cohort is explicitly non-comparative, so the reported outcomes do not constitute a randomized comparative-effectiveness estimate. Forty-eight imlifidase-treated participants completed the trial. The one-year results do not resolve longer-term graft outcomes.

17-HMedIdeS-14

Objective
Location and study date
Study design
Eligibility criteria
Treatment

No evidence found.

Study outcomes
Rationale for using long-term graft survival as the primary endpoint
Surrogate endpoint justification for survival outcomes

Not applicable.

Statistical analysis description
Number of participants (Planned and analyzed)
Description of analysis sets
Results
Participant disposition
Five-year assessment population
PopulationParticipants
Functioning grafts with reported five-year eGFR“24”
Baseline characteristics
Baseline sensitization
CharacteristicQuoted value
Median cPRA“99.62%”
Efficacy results
Five-year estimated glomerular filtration rate among functioning grafts
Estimation methodMean eGFR, mL/min/1.73 m²
Modification of Diet in Renal Disease“50.1”
Chronic Kidney Disease Epidemiology Collaboration, 2021“55.8”
Third reported estimation equation, 2023“52.5”
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results
Five-year follow-up extension, NCT03611621: late antibody-mediated rejection
Study limitations
Summary

This non-interventional follow-up analysis includes 39 crossmatch-positive participants from earlier trials. It is not a new randomized treatment comparison. Five-year kidney-function estimates were available for 24 functioning grafts, so these estimates are conditional on graft function and available follow-up rather than representing all original participants. The three-year, five-year, and correspondence publications concern overlapping follow-up evidence and should not be counted as separate trial populations.

High-strength donor-specific antibody single-center cohort

Objective
Location and study date

No evidence found.

Study design
Eligibility criteria
Treatment
Study outcomes
Rationale for using crossmatch conversion as the primary endpoint

Not applicable.

Statistical analysis description
Number of participants (Planned and analyzed)
Reported cohort
PopulationParticipants
Transplant candidates“7”
Description of analysis sets

No evidence found.

Results
Participant disposition

No evidence found.

Baseline characteristics
Baseline sensitization and donor type
CharacteristicQuoted value
Calculated panel-reactive antibody range“cPRA98-100%”
Deceased donors“5”
Living donors“2”
Efficacy results
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results
Study limitations
Summary

This single-center report describes 7 participants, including 5 deceased-donor and 2 living-donor transplant recipients. All had functioning grafts at a median follow-up of 235 days, but 3 experienced antibody rebound and antibody-mediated rejection. The small series does not provide a randomized comparator. Its participants should not be assumed to be independent of other trial or follow-up publications without confirmation of participant overlap.

Positive-crossmatch deceased-donor real-world cohort

Objective
Location and study date
Study design
Eligibility criteria
Treatment
Study outcomes
Rationale for using crossmatch conversion as the primary endpoint

Not applicable.

Statistical analysis description
Number of participants (Planned and analyzed)
Reported cohort size
PopulationParticipants
Transplanted cohort“9”
Description of analysis sets

No evidence found.

Results
Participant disposition

No evidence found.

Baseline characteristics
Baseline calculated panel-reactive antibody
CharacteristicQuoted value
Lower reported sensitization category“99%”
Higher reported sensitization category“100%”
Efficacy results
Kidney function and observation period
OutcomeQuoted value
Mean eGFR at last follow-up, mL/min/1.73 m²“56 ± 22”
Mean follow-up, months“7 ± 2.8”
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results
Study limitations
Summary

This clinical-practice cohort comprised 9 transplanted participants with at least 3 months of follow-up. The mean reported follow-up was 7 months. Crossmatch conversion occurred after one imlifidase injection, but 4 participants developed at least one infection. The small cohort and short follow-up do not establish comparative effectiveness or long-term graft survival.

DINKY

Objective
Location and study date
Study design
Eligibility criteria
Treatment
Study outcomes
Rationale for using crossmatch conversion as the primary endpoint
Statistical analysis description
Number of participants (Planned and analyzed)
Planned enrollment in the research summary
PopulationParticipants
Planned“10”
Description of analysis sets

No evidence found.

Results
Participant disposition

No evidence found.

Baseline characteristics

No evidence found.

Efficacy results

No evidence found.

Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results

No evidence found.

Study limitations
Summary

The research summary describes a single-arm pediatric trial with planned enrollment of 10 participants aged 1 to 17 years. This design does not provide a randomized comparator. No study results are included in this report, so the planned study cannot establish pediatric efficacy or safety here.

Lupus nephritis retransplantation case report

Objective
Location and study date

No evidence found.

Study design
Eligibility criteria

Not applicable.

Treatment
Study outcomes
Rationale for using donor-specific antibody reduction as the primary endpoint

Not applicable.

Statistical analysis description
Number of participants (Planned and analyzed)
Description of analysis sets

Not applicable.

Results
Participant disposition

No evidence found.

Baseline characteristics
Baseline features
CharacteristicQuoted record
Underlying kidney disease“lupus nephritis”
Sensitization“cPRA>99 %”
Efficacy results
Maximum reported total IgG depletion at 36 hours
OutcomeQuoted value
Total IgG reduction from baseline“-75 %”
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results

No evidence found.

Study limitations
Summary

The report concerns one 51-year-old woman with lupus nephritis undergoing retransplantation. The absence of donor-specific antibody rebound at six months is an individual observation, not an estimate of response probability. The case does not establish comparative efficacy or safety in other highly sensitized transplant candidates.

Desensitization with Imlifidase case report

Objective

No evidence found.

Location and study date

No evidence found.

Study design

No evidence found.

Eligibility criteria

No evidence found.

Treatment

No evidence found.

Study outcomes
Rationale for using clinical transplant outcomes as the primary endpoint

Not applicable.

Statistical analysis description
Number of participants (Planned and analyzed)

No evidence found.

Description of analysis sets

No evidence found.

Results
Participant disposition

No evidence found.

Baseline characteristics

No evidence found.

Efficacy results
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results

No evidence found.

Study limitations

No evidence found.

Anti-MICA antibody case report

Objective
Location and study date

No evidence found.

Study design
Eligibility criteria

Not applicable.

Treatment
Study outcomes
Rationale for using Anti-MICA antibody reduction as the primary endpoint

Not applicable.

Statistical analysis description
Number of participants (Planned and analyzed)
Description of analysis sets

Not applicable.

Results
Participant disposition

No evidence found.

Baseline characteristics
Efficacy results
Antibody rebound and subsequent removal
OutcomeQuoted timing
Anti-MICA donor-specific antibody rebound after imlifidase“14 days”
Removal of anti-MICA antibodies after subsequent treatment“day 45”
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results
Study limitations
Summary

This report describes one recipient with preformed anti-MICA donor-specific antibodies. Antibody rebound occurred after 14 days, and early antibody-mediated rejection was reported. Later antibody removal followed immunoadsorption and daratumumab, so that outcome cannot be attributed to imlifidase alone.

Molecular diagnosis of early alloimmune injury case report

Objective

No evidence found.

Location and study date

No evidence found.

Study design

No evidence found.

Eligibility criteria

No evidence found.

Treatment

No evidence found.

Study outcomes
Rationale for using molecular assessment of alloimmune injury as the primary endpoint

Not applicable.

Statistical analysis description
Number of participants (Planned and analyzed)

No evidence found.

Description of analysis sets

No evidence found.

Results
Participant disposition

No evidence found.

Baseline characteristics

No evidence found.

Efficacy results
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results

No evidence found.

Study limitations

No evidence found.

Pediatric compassionate-use case report

Objective

No evidence found.

Location and study date

No evidence found.

Study design

No evidence found.

Eligibility criteria

No evidence found.

Treatment

No evidence found.

Study outcomes
Rationale for using clinical transplant outcomes as the primary endpoint

Not applicable.

Statistical analysis description
Number of participants (Planned and analyzed)

No evidence found.

Description of analysis sets

No evidence found.

Results
Participant disposition

No evidence found.

Baseline characteristics

No evidence found.

Efficacy results
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results

No evidence found.

Study limitations

No evidence found.

NCT03897205

Objective
Location and study date
Multinational trial sites
CharacteristicQuoted count
Transplant centers“14”
Study design
Eligibility criteria
Treatment
Randomized treatments
ArmQuoted treatment
Enzyme therapy“imlifidase”
Active comparator“PLEX”
Study outcomes
Rationale for using donor-specific antibody reduction within five days as the primary endpoint
Statistical analysis description
Number of participants (Planned and analyzed)
Randomized population
PopulationParticipants
Randomized“Thirty”
Description of analysis sets
Results
Participant disposition

No evidence found.

Baseline characteristics

No evidence found.

Efficacy results
Maximum donor-specific antibody reduction
OutcomeImlifidasePLEX
Primary-endpoint reduction“97%”“42%”
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results
Graft losses within six months
OutcomeImlifidasePLEX
Allograft losses“four”“one”
Study limitations
Summary

This randomized study addressed treatment of established antibody-mediated rejection after transplantation, not pretransplant desensitization. Thirty participants were randomized, and the trial was open label. Greater donor-specific antibody reduction with imlifidase did not establish clinical benefit; four graft losses occurred in the imlifidase arm and one in the plasma-exchange arm. These findings should not be pooled as direct evidence for the pretransplant indication.

13-HMedIdeS-02

Objective
Location and study date

No evidence found.

Study design
Eligibility criteria
Treatment
Dose levels
Dose levelQuoted dose
Lower dose per infusion“0.12 mg/kg”
Higher dose per infusion“0.25 mg/kg”
Study outcomes
Rationale for using safety and tolerability as the primary endpoint

Not applicable.

Statistical analysis description
Number of participants (Planned and analyzed)
Description of analysis sets
Results
Participant disposition

No evidence found.

Baseline characteristics
Baseline sensitization
CharacteristicQuoted value
Median cytotoxic panel-reactive antibody“64%”
Efficacy results
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results
Study limitations
Summary

This single-center, open-label ascending-dose study enrolled 8 participants with chronic kidney disease. It establishes pharmacodynamic and immunogenicity observations in a small population, not a randomized estimate of transplantation benefit or long-term safety. IgG depletion within 48 hours and anti-IdeS antibody development are distinct outcomes and should not be equated with sustained clinical benefit.

11-HMedIdeS-01

Objective
Location and study date
Study design
Eligibility criteria
Treatment
Study outcomes
Rationale for using safety and tolerability as the primary endpoint

Not applicable.

Statistical analysis description
Number of participants (Planned and analyzed)
Reported trial populations
PopulationQuoted count
Total participants“29”
Placebo recipients“nine”
Description of analysis sets
Results
Participant disposition

No evidence found.

Baseline characteristics

No evidence found.

Efficacy results
Health-related quality of life and patient-reported outcomes

No evidence found.

Safety results
Study limitations
Summary

The trial included 29 healthy male participants, with 20 receiving IdeS and 9 receiving placebo. No formal power calculation was performed. Although the study reported no serious adverse events, its small healthy-volunteer population does not establish safety or efficacy in highly sensitized kidney transplant candidates receiving concomitant immunosuppression.