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Coversin

Phase 3

Paroxysmal Nocturnal Haemoglobinuria (PNH) | Small molecule | Hematology |Akari Therapeutics Plc|Trials Updated: May 4, 2025

Coversin development status

Highest phase Phase 3 (NCT03829449)
Phase scored for AKTXPhase 2
Registered trials 6 across 1 sponsor since Oct 2015

Coversin target and mechanism

ModalitySmall molecule

Also known as rVA576, rEV576

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials4
Total Enrollment20

FDA Designations

No designations recorded

Coversin clinical trials

Coversin · 4 trials · 3 indications

Phase 3 1Phase 2 3
NCT03588026Treating Paroxysmal Nocturnal Haemoglobinuria Patients With rVA576Paroxysmal Nocturnal Hemoglobinuria (PNH)
COMPLETED9 Analytics
PHASE3COMPLETED
Treating Paroxysmal Nocturnal Haemoglobinuria Patients With rVA576
Paroxysmal Nocturnal Hemoglobinuria (PNH)Unlock trial analytics

Study Endpoints

Primary Endpoints

HB (Haemoglobin) stabilisation rate and the avoidance of packed red blood cells (PRBC) transfusions
9 months

Haemoglobin stabilisation rate defined as haemoglobin greater than the set point for each patient during the pre-study randomisation period and the avoidance of PRBC transfusions during the treatment period.

Safety parameter
42 days

Proportion of participants reporting grade 3, 4 and 5 adverse events, which are related/possibly related to rVA576 during the treatment period. Treatment emergent adverse events (TEAEs) consist of: * Change from baseline in physical examination * ECG * Clinical laboratory tests * Vital signs The Common Terminology Criteria for Adverse Events (CTCAE v4.03) will be used to grade adverse events.

Measurement of Serum Lactate Dehydrogenase (LDH)
Baseline to Day 186

Measurement of serum lactate dehydrogenase (LDH)

Measurement of Ratio of LDH to the Upper Limit of Normal (ULN)
Day 0 and Day 28

LDH is an indicator of disease progression in patients with PNH and is expected to fall to within 2x upper limit of normal (ULN) within 28 days in successfully treated patients. Units are measured in ratio of LDH:ULN, where the ULN is 250 U/L. The primary efficacy endpoint was the LDH AUC from Day 0 to 28 compared with 28 days pretreatment. Data for the 28 days pre-treatment was not collected, and as only one patient was recruited, the LDH values compared with baseline and the ratio of LDH to the Upper Limit of Normal (ULN) are presented.

Number and Type of Adverse Events (AE)
2 years

The number and type of reported AEs will be recorded as well as the opinion of the Principle Investigator (PI) as to their possible relationship to the study drug.

Secondary Endpoints

Number of units of packed red blood cells (PRBC) transfused
Day 1 to Day 180
Percentage of patients who achieve transfusion avoidance
Day 1 to Day 180
Change in (QOl) Quality of Life score
Day 1 to Day 180
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Arm 1 - 9 months of treatment (rVA576 plus SOC)EXPERIMENTAL6 months (SOC plus rVA576), Followed by a further 3 months of (SOC plus rVA576).
Arm 2 - 6 months on SOCEXPERIMENTAL6 months on SOC only. Followed by 3 months (SOC plus rVA576).
Open-label single arm studyEXPERIMENTAL -
Coversin treatmentEXPERIMENTALCoversin - 22.5mg followed by 45mg for 6 months.
Coversin (Nomacopan)OTHERThis is an open label, non-comparator study. Patient will be given a single ablating dose of 0.57mg/kg per subject followed by daily repeat maintenance doses. The initial repeat dose will be 25% of the ablating dose. If this is insufficient to maintain complement inhibition at ≤10% of baseline (pre-treatment) level after 5 days of treatment the daily dose will be increased by doubling until that level of inhibition is achieved. In the event of 100% inhibition being achieved the dose may be titrated downwards at the PI's discretion until a satisfactory clinical result is obtained. If at any point in treatment complement inhibition falls to less than 50% of baseline a further ablating dose of 0.57mg/kg should be given. Coversin lyophilised powder in each vial was diluted with 0.6 mL water for injection prior to use.

Interventions

NameTypeDescription
rVA576DRUG6 months of treatment, rVA576 plus SOC. Followed by a further 3 months of rVA576 plus SOC. In total, 9 months on rVA576 plus SOC.
Standard of care (SOC)OTHER6 months on SOC followed by 3 months of treatment with rVA576 plus SOC. In total, 3 months on rVA576 plus SOC.
CoversinDRUGCoversin - 22.5mg followed by 45mg for 6 months.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites3

Inclusion Criteria: 1. Willing to give informed consent to treatment with rVA576 2. Diagnosed with paroxysmal nocturnal haemoglobinuria (PNH) 3. Have not received any complement inhibitor within the 4 months prior to screening 4. ≥ 18 years of age at the time of screening 5. Weight ≥50kg 6. Complet...

Countries:KazakhstanLithuaniaSri LankaGermanyNetherlandsUnited States
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Frequently asked questions about Coversin

What is Coversin used for?

Coversin is an investigational small molecule being developed for Paroxysmal Nocturnal Haemoglobinuria (PNH), also known as Paroxysmal Nocturnal Hemoglobinuria. It is in Phase 2 clinical development for this hematologic condition. Coversin is not FDA approved and remains under investigation.

Who makes Coversin?

Coversin is being developed by Akari Therapeutics Plc, a biopharmaceutical company traded on the NASDAQ under the ticker AKTX. The company is conducting clinical trials to evaluate Coversin as a potential treatment for Paroxysmal Nocturnal Haemoglobinuria (PNH).

What phase is Coversin in?

Coversin is in Phase 2 clinical development for Paroxysmal Nocturnal Haemoglobinuria (PNH). It is an investigational drug and has not received FDA approval. Clinical trials are ongoing to assess its safety and efficacy in this patient population.

What clinical trials is Coversin in?

Coversin has been studied in two completed Phase 2 clinical trials. The first, NCT02591862, evaluated Coversin in patients with Paroxysmal Nocturnal Haemoglobinuria (PNH) in the Netherlands. The second, NCT03427060, assessed Coversin in PNH patients with resistance to eculizumab due to complement C5 polymorphisms in the United States.

Is Coversin the same as a complement inhibitor?

Coversin is being studied in patients with Paroxysmal Nocturnal Haemoglobinuria (PNH) who have resistance to eculizumab, a complement C5 inhibitor. The trials focus on patients with complement C5 polymorphisms, suggesting Coversin may target the complement system, though its specific molecular target is not detailed.