rVA576 (Coversin) Long Term Safety and Efficacy Surveillance Study (CONSERVE)

CONSERVE: rVA576 (Coversin) Long Term Safety and Efficacy Surveillance Study

Long term management of patients with complement related diseases including Paroxysmal Nocturnal Haemoglobinuria and Atypical Haemolytic Uraemic Syndrome

Study Overview

• Status: Terminated
• Conditions: Paroxysmal Nocturnal Hemoglobinuria
• Intervention / Treatment: Drug: rVA576

Detailed Description

Patients with diseases requiring complement inhibition who have previously taken part in Akari clinical trials and who wish to continue to receive rVA576 (Coversin) after their active participation in the parent trial has completed and patients treated under compassionate use or named patient arrangements who wish to continue on rVA576 (Coversin) therapy

• Study Type: Interventional
• Enrollment (Actual): 15
• Phase: Phase 3

Contacts and Locations

Study Locations

• Poland
  • Warsaw, Poland, 02-776
    • Instytut Hematologii i Transfuzjologii

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Patients 18 years and above treated with rVA576 (Coversin) under other Akari clinical trial protocols and wish to remain on rVA576 (Coversin) at the conclusion of that trial.
2. In the opinion of the treating responsible clinician patient is receiving clinical benefit from continued treatment with study drug.
3. Evidence of sustained complement inhibition by CH50 assay. .
4. Women of childbearing potential (WOCBP) must agree to use effective contraception consistently throughout the study and have a negative pregnancy test at screening and a negative urine pregnancy test per the schedule of visits. Women cannot donate their eggs. Women are considered post-menopausal and not of childbearing potential if they have had 12 months of amenorrhea or have had surgical bilateral oophorectomy (with or without hysterectomy) or tubal ligation at least six weeks previously.
5. Males with a childbearing potential partner must agree to use effective contraception consistently OR have had a vasectomy
6. Weight ≥50-100kg
7. Willing to receive appropriate prophylaxis against Neisseria meningitidis infection, by both immunisation and continuous or intermittent antibiotics
8. The patient is willing to give voluntary written informed consent
9. The patient is willing in the process of preparation and self-administration of the study drug.

Exclusion Criteria:

1. Patient experienced any safety event in the previous study protocol, which puts the patient at unacceptable risk in current protocol as judged by the investigator and sponsor.
2. Patient is unwilling to complete the Quality of Life instruments and diary card
3. Active meningococcal infection (section 4.3.1 for additional information)
4. Any other reason for which, in the opinion of the Investigator, it would not be in the interests of the patient to remain on rVA576 (Coversin).
5. If female, the subject is pregnant or lactating or intending to become pregnant before, during, or within 90 days after last dose; or intending to donate ova during such time period.
6. If male, the subject intends to donate sperm while on the study this study or for 90 days after last dose.
7. Failure to satisfy the Investigator of fitness to participate for any other reason or any other condition which, in the opinion of the investigator, could increase the subject's risk by participating in the study or confound the outcome of the study.
8. Use of prohibited medication
9. The subject has a history of drug abuse (defined as any illicit drug use) or a history of alcohol abuse.
10. Participation in other clinical trials with investigational product.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: rVA576 Coversin; The study population will consist of patients who have completed participation in clinical trials under other Akari protocols and who wish to continue to receive rVA576 (Coversin) for up to 4 years.	Drug: rVA576; The study population will consist of patients who have completed participation in clinical trials under other Akari protocols and who wish to continue to receive rVA576 (Coversin).; Other Names: nomacopan

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Long Term Safety and Efficacy of rVA576 (Coversin) Therapy Assessed by AEs, SAEs, Standard Lab Tests and ECG Results.	To determine the safety profile of long-term rVA576 (Coversin) treatment as assessed by AEs, SAEs, Standard Lab tests and ECG results.	On entry and every 3 months thereafter, for the duration of the study (approximately 3 years and 5 months)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Proportion of Subjects With Thrombotic and Haemolytic Event Free Status During Each 3month Time Period Since the Start of the Study.	Thrombotic and Haemolytic Events will include, but are not limited to, the following: haemolytic anaemia, thrombocytopenia, red blood cell haemolysis indicated by dark urine, Budd-Chiara syndrome, any other thrombotic or haemolytic event deemed to be associated with PNH. A haemolytic event will be defined as a rise in LDH or other biochemical evidence of haemolysis accompanied by an increase in symptoms and/or frank haemoglobinuria. Increased symptoms without objective haematological or biochemical evidence of haemolysis will not be counted as haemolytic events. In addition, the following signs and symptoms may be reviewed and classified as Thrombotic/Haemolytic events if appropriate: Acute kidney failure, Hypertension, Myocardial infarction, Stroke, Lung complications, Seizure, Coma, Premature death.	On entry and every 3 months thereafter, for the duration of the study (approximately 3 years and 5 months)
Time to Thrombotic or Haemolytic Event Since Joining This Study.	Time to thrombotic or haemolytic event since joining this study.	Approximately 3 years and 5 months
Proportion of Subjects Who Require PRBC Transfusion During Each 3-month Period Since the Start of the Study and Over the Entire Period of the Study	Proportion of subjects who require PRBC transfusion during each 3-month period since the start of the study and over the entire period of the study	On entry and every 3 months thereafter, for the duration of the study (approximately 3 years and 5 months)
Time to First Transfusion Since Joining the Study.	Time to first transfusion since joining the study.	approximately 3 years and 5 months
Proportion of Subjects With no Adverse Change in Overall Scores of Quality of Life Using the EORTC QLQ-C30, the EQ-5D-5L and FACIT-F Instruments at Each 3-month Time Period Since the Start of the Study.	Proportion of subjects with no adverse change in overall scores of Quality of Life using the EORTC QLQ-C30, the EQ-5D-5L and FACIT-F instruments at each 3-month time period since the start of the study.	Every 3 months up to 39 months
Proportion of Subjects With Serum Lactate Dehydrogenase (LDH) <1.8, >1.8 to 2.4, >2.4 to 3, and >3 Times the Upper Limit of Normal (ULN) at Each 3-month Time Period Since the Start of the Study.	Proportion of subjects with serum Lactate Dehydrogenase (LDH) <1.8, >1.8 to 2.4, >2.4 to 3, and >3 times the upper limit of normal (ULN) at each 3-month time period since the start of the study.	12 weeks
Proportion of Subjects With Median Serum Lactate Dehydrogenase (LDH) <1.8, >1.8 to 2.4, >2.4 to 3, and >3 Times the Upper Limit of Normal (ULN) Over the Entire Duration of the Study.	Proportion of subjects with median serum Lactate Dehydrogenase (LDH) <1.8, >1.8 to 2.4, >2.4 to 3, and >3 times the upper limit of normal (ULN) over the entire duration of the study.	Approximately 3 years and 5 months
Proportion of Transfusion-independent Subjects at Each 3-month Time Point, With Haemoglobin (g/L) Above the Baseline Haemoglobin Value They Had at the Start of the Trial From Which They Entered CONSERVE	Proportion of transfusion-independent subjects at each 3-month time point, with haemoglobin (g/L) above the baseline haemoglobin value they had at the start of the trial from which they entered CONSERVE	Baseline and every 3 months up to 39 months
Proportion of Transfusion-independent Subjects Over the Entire Duration of the Study With Mean Haemoglobin (g/L) Above the Baseline Haemoglobin Value They Had at the Start of the Trial From Which They Entered CONSERVE	Proportion of transfusion-independent subjects over the entire duration of the study with mean haemoglobin (g/L) above the baseline haemoglobin value they had at the start of the trial from which they entered CONSERVE	Approximately 3 years and 5 months
Proportion of Patients Experiencing Major Adverse Vascular Events (MAVE) Over the Entire Period of the Study.	Proportion of patients experiencing Major Adverse Vascular Events (MAVE) over the entire period of the study.	Approximately 3 years and 5 months
Time to First Major Adverse Vascular Event (MAVE) for Each Subject Since Joining the Study.	Time to first Major Adverse Vascular Event (MAVE) for each subject since joining the study.	Approximately 3 years and 5 months
Number of Major Adverse Vascular Events (MAVE) Over the Entire Period of the Study.	Number of Major Adverse Vascular Events (MAVE) over the entire period of the study.	Approximately 3 years and 5 months

Collaborators and Investigators

• Sponsor: AKARI Therapeutics
• Investigators: Study Director: Wynne Weston Davies, AKARI Therapeutics

Study record dates

Study Major Dates

• Study Start (Actual): March 13, 2017
• Primary Completion (Actual): August 29, 2020
• Study Completion (Actual): August 29, 2020

Study Registration Dates

• First Submitted: December 20, 2018
• First Submitted That Met QC Criteria: February 1, 2019
• First Posted (Actual): February 4, 2019

Study Record Updates

• Last Update Posted (Actual): April 10, 2025
• Last Update Submitted That Met QC Criteria: April 8, 2025
• Last Verified: February 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Urogenital Diseases; Male Urogenital Diseases; Urologic Diseases; Female Urogenital Diseases; Female Urogenital Diseases and Pregnancy Complications; Urination Disorders; Urological Manifestations; Hematologic Diseases; Bone Marrow Diseases; Anemia, Hemolytic; Anemia; Myelodysplastic Syndromes; Proteinuria; Hemoglobinuria; Hemoglobinuria, Paroxysmal
• Other Study ID Numbers: AK581

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No