A Phase 2 interventional study of Eculizumab in Atypical Hemolytic-Uremic Syndrome, sponsored by Alexion Pharmaceuticals, Inc.. Completed at 17 sites in 9 countries. Open to participants aged 1 Month to 18 Years. Per ClinicalTrials.gov, last updated 2015-04-29.
Sponsored by Alexion Pharmaceuticals, Inc. (part of AstraZeneca) · Phase 2, Interventional, and Treatment
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Among 10 studies testing eculizumab in Atypical Hemolytic Uremic Syndrome — 1 open to participants now, 1 under way, 1 of them phase 3. eculizumab · Atypical Hemolytic Uremic Syndrome.
Among the 10 studies testing eculizumab in Atypical Hemolytic Uremic Syndrome, this one is the 5th largest by enrollment, is one of 2 that started in 2010, is one of 8 in phase 2, and was the 5th registered.
45 studies on the registry are indexed under Atypical Hemolytic Uremic Syndrome; 14 are open to participants now.
Browse Atypical Hemolytic Uremic Syndrome studies →1 of the 10 studies testing eculizumab in Atypical Hemolytic Uremic Syndrome is open now, in 1 country. Recruiting first, the newest first:
Assistance Publique - Hôpitaux de Paris · Sites in France
Ages 18+
By country, each count listing its studies:
eculizumab: first FDA approval 2007 (SOLIRIS), first EMA approval 2007. What it is approved for, and how studies give it, is on its page →
Of the 12 Atypical Hemolytic Uremic Syndrome studies recruiting now, 10 (83%) set no upper age limit and none (0%) stop at 75 or younger; 6 take children under 18; 2 take healthy volunteers.
This study: 1 Month to 18 Years · all sexes · no healthy volunteers.
The full table on the hub →This tab as a report to print or save as PDF → With an account.
10 studies; the count open now beside each. This study's row is marked.
First in 2009; this study’s year is marked. 2 started in 2010.
This study's enrollment of 22 is below the median of 34 across 26 interventional studies indexed under Atypical Hemolytic Uremic Syndrome.
Median enrollment 19 across the 10 interventional studies. Of the 9 that completed or were terminated, 7 (78%) have results posted.
This tab as a report to print or save as PDF → With an account.
7 of 10 have an industry lead sponsor. The 4 most frequent:
This study is registered under Alexion Pharmaceuticals, Inc., one of the names counted as AstraZeneca. Under that name alone:
Alexion Pharmaceuticals, Inc. is the lead sponsor of 255 studies on the registry; 23 are open to participants now.
Of its 101 completed or terminated interventional studies of FDA-regulated products, 75 (74%) have results posted.
19 studies in Atypical Hemolytic Uremic Syndrome by AstraZeneca: 4 open now, 5 under way, none of them phase 3. Of 14 finished, 9 (64%) have results posted.
Among the 19 studies in Atypical Hemolytic Uremic Syndrome by AstraZeneca, this one is the 4th largest by enrollment of the 10 interventional ones that give a count, is one of 2 that started in 2010, is one of 7 in phase 2, and was the 5th registered.
AstraZeneca’s Atypical Hemolytic Uremic Syndrome studies by the year they started, since 2009.
None of the studies under way reaches primary completion within a year.
Among the 10 studies testing eculizumab in Atypical Hemolytic Uremic Syndrome, from their registry updates:
Nothing recorded among them since 2026-09-25.
Among AstraZeneca’s 19 in Atypical Hemolytic Uremic Syndrome:
Nothing recorded among them since 2026-09-25.
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The primary purpose is to assess the efficacy and safety of eculizumab in pediatric patients with aHUS to control TMA as characterized by thrombocytopenia, hemolysis and renal impairment.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion:
Any of the following was regarded as a criterion for exclusion from the study:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Platelets
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ULN (upper limit of normal)
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hemoglobin (Hb)
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Excipients
The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Drug: Eculizumab
Fixed dosing is based on body weight cohorts. Adjustment of dose to accommodate patient growth is possible.
Proportion of Patients With Complete TMA Response
Proportion of Patients with Complete TMA response was determined and defined by normalization of hematological parameters (platelet count and LDH) and ≥ 25% improvement in serum creatinine from baseline which was sustained for at least two consecutive measurements obtained at least four weeks apart).
Time frame: Through 26 weeks
Proportion of Patients With Complete Hematologic Response
Proportion of Patients with Complete Hematologic response through 26 weeks of treatment was determined and defined by normalization of platelet count and LDH sustained for at least two consecutive measurements obtained at least four weeks apart.
Time frame: Through 26 weeks
Proportion of Patients With Platelet Count Normalization
Proportion of Patients with Platelet Count Normalization through 26 weeks of treatment was determined and defined as the platelet count observed to be ≥ 150 x 109/L on at least two consecutive measurements which span a period of at least four weeks.
Time frame: Through 26 weeks
Proportion of Patients With Estimated Glomerular Filtration Rate (eGFR) Improvement
Proportion of Patients with Estimated Glomerular Filtration Rate (eGFR) Improvement was determined and defined as an increase in eGFR by ≥ 15 mL/min/1.73m2 from baseline, sustained for at least two consecutive measurements obtained at least four weeks apart.
Time frame: Through 26 weeks
Platelet Count Change From Baseline to 26 Weeks
Time frame: Through 26 weeks
Proportion of Patients With Complete TMA Response
Proportion of Patients with Complete TMA response was determined and defined by normalization of hematological parameters (platelet count and LDH) and ≥ 25% improvement in serum creatinine from baseline which was sustained for at least two consecutive measurements obtained at least four weeks apart).
Time frame: Through End of Study, Median Exposure 55 Weeks
Proportion of Patients With Complete Hematologic Response
Proportion of Patients with Complete Hematologic response through end of study was determined and defined by normalization of platelet count and LDH sustained for at least two consecutive measurements obtained at least four weeks apart.
Time frame: Through End of Study, Median Exposure 55 Weeks
Proportion of Patients With Platelet Count Normalization
Proportion of Patients with Platelet Count Normalization through end of study was determined and defined as the platelet count observed to be ≥ 150 x 109/L on at least two consecutive measurements which span a period of at least four weeks
Time frame: Through End of Study, Median Exposure 55 Weeks
Proportion of Patients With Estimated Glomerular Filtration Rate (eGFR) Improvement
Proportion of Patients with Estimated Glomerular Filtration Rate (eGFR) Improvement was determined and defined as an increase in eGFR by ≥ 15 mL/min/1.73m2 from baseline, sustained for at least two consecutive measurements obtained at least four weeks apart.
Time frame: Through End of Study, Median Exposure 55 Weeks
Platelet Count Change From Baseline to 52 Weeks
Time frame: Through 52 Weeks
Pharmacokinetics (PK) and Pharmacodynamics (PD); Minimum and Maximum Blood Concentration (Body Weight Cohort 5 - <10kg) N=3
Time frame: Induction Phase was between 1 and 4 weeks in length depending on patient weight cohort.Maintenance Phase was started 1 week after induction phase and dosing of eculizumab administration was every 2 weeks or every 3 weeks depending on patient weight cohort
Pharmacokinetics (PK) and Pharmacodynamics (PD); Minimum and Maximum Blood Concentration (Body Weight Cohort 10 - <20kg) N=7
Time frame: Induction Phase was between 1 and 4 weeks in length depending on patient weight cohort.Maintenance Phase was started 1 week after induction phase and dosing of eculizumab administration was every 2 weeks or every 3 weeks depending on patient weight cohort
Pharmacokinetics (PK) and Pharmacodynamics (PD); Minimum and Maximum Blood Concentration (Body Weight Cohort 20 - <30kg)
Time frame: Induction Phase was between 1 and 4 weeks in length depending on patient weight cohort. Maintenance Phase was started either 2 weeks or 3 weeks after induction phase depending on patient weight cohort
Pharmacokinetics (PK) and Pharmacodynamics (PD); Minimum and Maximum Blood Concentration (Body Weight Cohort 30 - <40kg) N=1
Time frame: Induction Phase was between 1 and 4 weeks in length depending on patient weight cohort. Maintenance Phase was started either 2 weeks or 3 weeks after induction phase depending on patient weight cohort
Pharmacokinetics (PK) and Pharmacodynamics (PD); Minimum and Maximum Blood Concentration (Body Weight Cohort ≥40kg) N=5
Time frame: Induction Phase was between 1 and 4 weeks in length depending on patient weight cohort. Maintenance Phase was started either 2 weeks or 3 weeks after induction phase depending on patient weight cohort
A total of 27 patients diagnosed with aHUS signed the informed consent and of these, 22 patients were treated. Five patients were excluded from the study due to failed screening procedure and did not receive eculizumab.
| Milestone | Eculizumab |
|---|---|
| Started | 27 |
| Completed | 22 |
| Not completed | 5 |
| Withdrew: Screen failure | 5 |
| Milestone | Eculizumab |
|---|---|
| Started | 22 |
| Completed | 19 |
| Not completed | 3 |
| Withdrew: Positive shiga-toxin result vial local | 1 |
| Withdrew: Serious adverse event | 1 |
| Withdrew: Patient requested to withdraw | 1 |
| Milestone | Eculizumab |
|---|---|
| Started | 17 |
| Completed | 16 |
| Not completed | 1 |
| Withdrew: Physician decision | 1 |
| Milestone | Eculizumab |
|---|---|
| Started | 10 |
| Completed | 8 |
| Not completed | 2 |
| Withdrew: Patient did not return for visit | 2 |
Proportion of Patients with Complete TMA response was determined and defined by normalization of hematological parameters (platelet count and LDH) and ≥ 25% improvement in serum creatinine from baseline which was sustained for at least two consecutive measurements obtained at least four weeks apart).
| Percentage of Participants | Eculizumab |
|---|---|
| Proportion of Patients With Complete TMA Response | 63.6 (40.7 to 82.8) |
Proportion of Patients with Complete Hematologic response through 26 weeks of treatment was determined and defined by normalization of platelet count and LDH sustained for at least two consecutive measurements obtained at least four weeks apart.
| Percentage of Participants | Eculizumab |
|---|---|
| Proportion of Patients With Complete Hematologic Response | 81.8 (59.7 to 94.8) |
Proportion of Patients with Platelet Count Normalization through 26 weeks of treatment was determined and defined as the platelet count observed to be ≥ 150 x 109/L on at least two consecutive measurements which span a period of at least four weeks.
| Percentage of Participants | Eculizumab |
|---|---|
| Proportion of Patients With Platelet Count Normalization | 95.5 (77.2 to 99.9) |
Proportion of Patients with Estimated Glomerular Filtration Rate (eGFR) Improvement was determined and defined as an increase in eGFR by ≥ 15 mL/min/1.73m2 from baseline, sustained for at least two consecutive measurements obtained at least four weeks apart.
| Percentage of Participants | Eculizumab |
|---|---|
| Proportion of Patients With Estimated Glomerular Filtration Rate (eGFR) Improvement | 86.4 (65.1 to 97.1) |
| 10^9 cells/L | Eculizumab |
|---|---|
| Platelet Count Change From Baseline to 26 Weeks | 204.96 (164.44 to 245.49) |
Proportion of Patients with Complete TMA response was determined and defined by normalization of hematological parameters (platelet count and LDH) and ≥ 25% improvement in serum creatinine from baseline which was sustained for at least two consecutive measurements obtained at least four weeks apart).
| Percentage of Participants | Eculizumab |
|---|---|
| Proportion of Patients With Complete TMA Response | 68.2 (45.1 to 86.1) |
Proportion of Patients with Complete Hematologic response through end of study was determined and defined by normalization of platelet count and LDH sustained for at least two consecutive measurements obtained at least four weeks apart.
| Percentage of Participants | Eculizumab |
|---|---|
| Proportion of Patients With Complete Hematologic Response | 90.9 (70.8 to 98.9) |
Proportion of Patients with Platelet Count Normalization through end of study was determined and defined as the platelet count observed to be ≥ 150 x 109/L on at least two consecutive measurements which span a period of at least four weeks
| Percentage of Participants | Eculizumab |
|---|---|
| Proportion of Patients With Platelet Count Normalization | 95.5 (77.2 to 99.9) |
Proportion of Patients with Estimated Glomerular Filtration Rate (eGFR) Improvement was determined and defined as an increase in eGFR by ≥ 15 mL/min/1.73m2 from baseline, sustained for at least two consecutive measurements obtained at least four weeks apart.
| Percentage of Participants | Eculizumab |
|---|---|
| Proportion of Patients With Estimated Glomerular Filtration Rate (eGFR) Improvement | 86.4 (65.1 to 97.1) |
| 10^9 cells/L | Eculizumab |
|---|---|
| Platelet Count Change From Baseline to 52 Weeks | 165.43 (98.43 to 232.46) |
| micrograms/mL | Eculizumab. Min and Max Blood Concentration |
|---|---|
| Min Concentration during induction period | 223.2 ± 19.0 |
| Max concentration during induction period | 312.8 ± 51.2 |
| Min concentration during maintenance | 187.2 ± 42.0 |
| Max concentration during maintenance | 499.7 ± 27.8 |
| micrograms/mL | Eculizumab. Min and Max Blood Concentration |
|---|---|
| Min Concentration during induction period | 297.2 ± 74.7 |
| Max concentration during induction period | 436.3 ± 128.3 |
| Min concentration during maintenance | 241.8 ± 106.0 |
| Max concentration during maintenance | 459.5 ± 105.5 |
| micrograms/mL | Eculizumab. Min and Max Blood Concentration |
|---|---|
| Min Concentration during induction period | 185.1 ± 19.5 |
| Max concentration during induction period | 242.5 ± 24.5 |
| Min concentration during maintenance | 337.6 ± 43.4 |
| Max concentration during maintenance | 579.5 ± 66.5 |
| micrograms/mL | Eculizumab. Min and Max Blood Concentration |
|---|---|
| Min Concentration during induction period | 196.8 |
| Max concentration during induction period | 282.2 |
| Min concentration during Maintenance | NA ± NA |
| Max concentration during Maintenance | NA ± NA |
| micrograms/mL | Eculizumab. Min and Max Blood Concentration |
|---|---|
| Min Concentration during induction period | 125.5 ± 26.3 |
| Max concentration during induction period | 180.9 ± 42.6 |
| Min concentration during maintenance | 278.4 ± 130.3 |
| Max concentration during maintenance | 572.8 ± 267.7 |
Collected over Through end of study; exposure to eculizumab in this study extended for a median duration of 12.6 months and ranged from 1 dose to 24.5 months.. Non-serious events are listed at a 0% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Eculizumab | — | 13/22 (59.1%) | 20/22 (90.9%) |
| Event | Eculizumab |
|---|---|
| AnaemiaBlood and lymphatic system disorders | 2/22 |
| PyrexiaGeneral disorders | 2/22 |
| Gastroenteritis viralInfections and infestations | 2/22 |
| Upper respiratory tract infectionInfections and infestations | 2/22 |
| Viral upper respiratory tract infectionInfections and infestations | 2/22 |
| HypertensionVascular disorders | 2/22 |
| Bone marrow failureBlood and lymphatic system disorders | 1/22 |
| Abdominal painGastrointestinal disorders | 1/22 |
| Device malfunctionGeneral disorders | 1/22 |
| Medical device complicationGeneral disorders | 1/22 |
| Event | Eculizumab |
|---|---|
| PYREXIAGeneral disorders | 11/22 |
| COUGHRespiratory, thoracic and mediastinal disorders | 9/22 |
| DIARRHOEAGastrointestinal disorders | 8/22 |
| ABDOMINAL PAINGastrointestinal disorders | 7/22 |
| VOMITINGGastrointestinal disorders | 7/22 |
| NASOPHARYNGITISInfections and infestations | 7/22 |
| UPPER RESPIRATORY TRACT INFECTIONInfections and infestations | 7/22 |
| RHINITISInfections and infestations | 5/22 |
| HEADACHENervous system disorders | 5/22 |
| URINARY TRACT INFECTIONInfections and infestations | 4/22 |
The intent-to-treat (ITT) population was defined as all patients who received any amount of eculizumab, and were considered evaluable for safety and efficacy analyses. For both the efficacy and safety analyses, all 22 patients who were treated with study drug were included in the ITT population.
| Age, Continuous(Years) | Eculizumab |
|---|---|
| Mean | 6.6 ± 6.06 |
| Sex: Female, Male(Participants) | Eculizumab |
|---|---|
| Female | 10 |
| Male | 12 |
| Race (NIH/OMB)(Participants) | Eculizumab |
|---|---|
| American Indian or Alaska Native | 0 |
| Asian | 2 |
| Native Hawaiian or Other Pacific Islander | 0 |
| Black or African American | 0 |
| White | 18 |
| More than one race | 0 |
| Unknown or Not Reported | 2 |
The record gives a start of Sep 2010, a primary completion of Jan 2014 and a completion of Apr 2014. It does not say whether these dates are actual or estimated.
Results were first posted in Apr 2015, 1 year 3 months after primary completion.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Apr 2015. You cannot join it, but the record below documents what was studied.
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Studies of the drug tested here: Eculizumab
Atypical Hemolytic Uremic Syndrome →
Alexion Pharmaceuticals, Inc. →