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S-303 Treated Red Blood Cells

Phase 3

Thalassemia Major | Monoclonal antibody | Hematology |Cerus Corporation|Trials Updated: Jul 18, 2018

S-303 Treated Red Blood Cells target and mechanism

ModalityMonoclonal antibody

Also known as S-303 Treated Red Blood Cells (RBCs)

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLED
Total Trials1
Total Enrollment86

FDA Designations

No designations recorded

S-303 Treated Red Blood Cells clinical trials

S-303 Treated Red Blood Cells · 1 trial · 1 indication

Phase 3 1
NCT01740531Study to Evaluate Efficacy and Safety of S303 Treated Red Blood Cells (RBCs)in Subjects With Thalassemia Major Requiring Chronic RBC TransfusionThalassemia Major
COMPLETED86 Analytics
PHASE3COMPLETED
Study to Evaluate Efficacy and Safety of S303 Treated Red Blood Cells (RBCs)in Subjects With Thalassemia Major Requiring Chronic RBC Transfusion
Thalassemia MajorUnlock trial analytics

Study Endpoints

Primary Endpoints

Primary Efficacy Endpoint - Hemoglobin consumption
12 months

Hemoglobin consumption measured as total hemoglobin mass transfused per subject adjusted for average body weight and the number of days during the efficacy evaluation period (adjusted hemoglobin (Hgb) consumption units are g Hgb/kg body weight/day).

Primary Safety Endpoint-Incidence of a treatment-emergent antibody with confirmed specificity to S 303 treated red blood cells (RBC)
12 months

Incidence of a treatment-emergent antibody with confirmed specificity to S 303 treated red blood cells (RBC) associated with clinically significant hemolysis

Secondary Endpoints

Secondary Efficacy Endpoint-Hemoglobin increment
12 months
Secondary Efficacy Endpoint-Proportional decline in post transfusion hemoglobin level per day (%/day)
12 months
Secondary Safety Endpoint-Adverse Events
12 months
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelCROSSOVER
PurposeOTHER

Treatment Arms

ArmTypeDescription
S-303 Treated Red Blood Cells (RBC)EXPERIMENTALPatients will be randomly assigned to the sequence of administration of Test and Control RBCs; eligible patients are randomly assigned to receive Test RBCs followed by Control RBCs or Control RBCs followed by Test RBCs. Each patient will complete both treatment periods.
Conventional, untreated Red Blood CellsACTIVE_COMPARATORPatients will be randomly assigned to the sequence of administration of Test and Control RBCs; eligible patients are randomly assigned to receive Test RBCs followed by Control RBCs or Control RBCs followed by Test RBCs. Each patient will complete both treatment periods.

Interventions

NameTypeDescription
S-303 Treated Red Blood Cells (RBCs)BIOLOGICAL -
Conventional, untreated Red Blood CellsBIOLOGICAL -
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Eligibility Criteria

Age Range10 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites3

Inclusion Criteria: * Age ≥10 years, of either gender * Diagnosed with thalassemia major and currently participating in a chronic transfusion program * At least a one year history of chronic RBC transfusion support with a stable transfusion requirement (per treating physician) * Intervals of at lea...

Countries:ItalyTurkey (Türkiye)
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Frequently asked questions about S-303 Treated Red Blood Cells

What is S-303 Treated Red Blood Cells used for?

S-303 Treated Red Blood Cells is being developed for thalassemia major in patients who require chronic red blood cell transfusion. It is a pathogen-reduced red blood cell product studied as an alternative transfusion option for this patient population. The program is in Phase 3 development.

Who makes S-303 Treated Red Blood Cells?

S-303 Treated Red Blood Cells is developed by Cerus Corporation, which trades on the Nasdaq under the ticker CERS. Cerus is the sponsor of the clinical program evaluating this pathogen-reduced red blood cell product in patients with thalassemia major.

What phase is S-303 Treated Red Blood Cells in?

S-303 Treated Red Blood Cells is in Phase 3 development. The program has one completed Phase 3 trial and no active trials. It is an investigational product and has not been approved by the FDA for any indication.

What clinical trials is S-303 Treated Red Blood Cells in?

S-303 Treated Red Blood Cells has been studied in one Phase 3 trial, NCT01740531, titled a study to evaluate efficacy and safety of S303 treated red blood cells in subjects with thalassemia major requiring chronic RBC transfusion. The trial is completed, enrolled 86 participants, and was conducted in Italy and Turkey.

Is S-303 Treated Red Blood Cells the same as S-303 Treated Red Blood Cells (RBCs)?

Yes. S-303 Treated Red Blood Cells (RBCs) is the same product as S-303 Treated Red Blood Cells. RBCs is simply shorthand for red blood cells, so both names refer to the same Cerus Corporation pathogen-reduced red blood cell product in Phase 3 development for thalassemia major.

How was the Phase 3 trial of S-303 Treated Red Blood Cells designed?

The completed Phase 3 trial NCT01740531 was randomized, double-blind, and active-controlled, enrolling 86 participants with thalassemia major who required chronic red blood cell transfusion. Participants were 10 years of age or older, and the study included sites in Italy and Turkey.