A Prospective, Non-interventional, Observational Study of Presentation, Treatment Patterns and Outcomes in Atypical Hemolytic Uremic Syndrome Patients

N/AActive Not RecruitingNCT06099236

AstraZeneca367 enrolled

Overview

This is a China, non-interventional, observational study and will follow the Good Phar-macoepidemiology Practices guidelines. This study will enrol paediatric and adult patients diagnosed with aHUS who will be treated according to routine clinical practice defined by local institutional treatment guidelines/protocol. Those aHUS patients who will be treated with a supportive therapy, which does not contain eculizumab, will be monitored for up to 12 months since the ini-tial diagnosis. Patients initiated on eculizumab treatment anytime between aHUS diagno-sis until 12 months will be followed for additional 12 months, starting from the ecu initia-tion. Patient disposition, characteristics, outcomes and safety will be described for all pa-tients enrolled into this study

Study Type

OBSERVATIONAL

Enrollment

367

Conditions

Atypical Hemolytic Uremic Syndrome(aHUS)

Eligibility

Sex: ALL

Medical Language ↔ Plain English

Inclusion Criteria: Participants are eligible to be included in the study. Age 1. Patients of any age, who are diagnosed as aHUS by a professional physician (first epi-sode or relapse). Type of Patient and Disease Characteristics 2. Evidence of TMA, including thrombocytopenia, evidence of hemolysis, and kidney dys-function, based on the following laboratory findings, should be recorded within 2 weeks time frame: 1. Platelet count \< 150,000 per microliter (μL), and 2. Mechanic hemolytic anemia evident by LDH ≥ 1.5 × upper limit of normal (ULN), and hemoglobin ≤ lower limit of normal (LLN) for age and gender and 3. Serum creatinine level ≥ ULN in adults (≥18 years of age), or ≥ 97.5th percentile for age at screening in children (patients who require dialysis for acute kidney injury are also eligi-ble). 3. Gender: Male and/or female. Informed Consent 4. Willing and able to give written informed consent and comply with the study visit schedule as described in Section 6.2.1. For patients \< 18 years of age, patient's legal guardian must be willing and able to give written informed consent and the patient must be willing to give written informed assent (if applicable as determined by the central. Exclusion Criteria: Participants are excluded from the study if any of the following criteria apply: Medical Conditions 1. Patients who were diagnosed with HUS only due to Shiga toxin-producing Escherichia coli (STEC). 2. Patients who were diagnosed with TTP (ADAMTS13 activity \<10%). Other Exclusions 3. Unable to give written informed consent. 4. Any medical or psychological condition that, in the opinion of the Investigator, could increase the risk to the participant by participating in the study or confound the outcome of the study.

Locations (26)

Research Site

Beijing, Beijing Municipality, China

Research Site

Chongqing, Sichuan, China

Research Site

Anhui, China

Research Site

Beijing, China

Research Site

Chongqing, China

Research Site

Fujian, China

Research Site

Guangdong, China

Research Site

Guangxi, China

Research Site

Guizhou, China

Research Site

Hainan, China

...and 16 more locations

Outcomes

Primary Outcomes

Event free survival, where event defined as ESRD or death on or after TMA onset.

Time frame: 12 Months

Secondary Outcomes

Death

Time frame: 12 Months

End-stage renal disease(ESRD)

Time frame: 12 Months

Complete TMA Response during observation the as evidenced by simultaneous normalization of hemato-logical parameters (platelet count and LDH) and ≥ 25% improvement in serum creatinine from baseline

Time frame: 12 Months

Complete Thrombotic Microangiopathy(TMA ) Response status over time

Time frame: 12 Months

Time to Complete Thrombotic Microangiopathy(TMA ) Response

Time frame: 12 Months

Thrombotic Microangiopathy(TMA ) relapse

Time frame: 12 Months

Observed value and change from baseline in estimated glomerular filtration rate (eGFR)

Time frame: 12 Months

Chronic kidney disease (CKD) stage, as evaluated by the Investigator and classified as improved, stable (no change), or worsened compared to baseline

Time frame: 12 Months

Proteinuria over time.

Time frame: 12 Months

Urine protein-to-creatinine ratio over time.

Time frame: 12 Months

Plasma C3, C4, CH50, Factor H and I, soluble C5b-9 (sC5b-9) and CD46 expression over time.

Time frame: 12 Months

The proportion of patients with normal platelet count (≥150 x 109/L),LDH levels ≤upper limit of normal , serum creatinine < up-per limit of normal for age or an improvement > 25% compared to baseline,eGFR≥ 60 mL/min/1.73 m2, proteinuria negative.

Time frame: 12 Months

Descriptive data of events of interest (serious infec-tions (Aspergillus infections and infections due to en-capsulated bacteria such as Neisseria meningitidis), pregnancy, lactation, and follow-up-data on neonates for 3 months after delivery)

Time frame: 12 Months

Descriptive data of Serious Adverse Events (SAEs) for treatment period 2.

Time frame: 12 Months

Observed Value in Platelet Count

Time frame: 12 Months

Observed Value in Lactate Dehydrogenase (LDH) (mg/dL)

Time frame: 12 Months

Observed Value in Hemoglobin (mg/dL)

Time frame: 12 Months

Change from Baseline in Platelet Count

Time frame: 12 Months

Change from Baseline in Lactate Dehydrogenase (LDH) (mg/dL)

Time frame: 12 Months

Change from Baseline in Hemoglobin (mg/dL)

Time frame: 12 Months

The number of patients still on dialysis during each follow-up visit

Time frame: 12 Months