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Cytotoxic T Lymphocytes

Phase 1

Covid19 | Small molecule | Infectious Disease |Tevogen Bio Holdings Inc.|Last Updated: Apr 29, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
NO_TREATMENT_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment30
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04765449Transfer of Infection Fighting Immune Cells Generated in the Laboratory to High Risk Patients With COVID-19 InfectionPHASE1 COMPLETED 30Sep 15, 2021Jan 19, 2023Apr 29, 20251 United States
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Study Endpoints
Primary Endpoints
Safety of COVID-19-specific CTLs: Infusion Reactions
Within 48 Hours of CTL Infusion

Safety will be measured by the absence of: Grade ≥ 3 acute infusion reactions

Safety of COVID-19-specific CTLs: Grade 4 AEs
Within 14 days of CTL infusion

Safety will be measured by the absence of: Any grade 4 or higher adverse event thought to be related to the CTL therapy and outside the spectrum of identified COVID related events.

Safety of COVID-19-specific CTLs: GVHD
Within 14 days of CTL infusion

Safety will be measured by the absence of: Any manifestation of acute GVHD (for acute grades 2-4 GVHD-Glucksberg criteria) 53 resistant to 2 mg/kg of solumedrol or equivalent

Safety of COVID-19-specific CTLs: Marrow Aplasia
Within 14 days of CTL infusion

Safety will be measured by the absence of: Marrow aplasia due to 3rd party engraftment

Safety of COVID-19-specific CTLs: Neurotoxicty
Within 14 days of CTL infusion

Safety will be measured by the absence of: Grade ≥ 2+ Neurotoxicity as measured by the ASTCT/ICANS consensus grading system

Safety of COVID-19-specific CTLs: CRS
Within 14 days of CTL infusion

Safety will be measured by the absence of: Grade ≥ 2+ CRS as measured by the ASTCT Consensus Grading Criteria for CRS

Secondary Endpoints
Measurement of COVID-19 viral load
Up to 14 Days
Studies to detect the persistence of the COVID-19-specific T cells after COVID-19 T cell infusion
Up to 6 months
Studies to examine the development of endogenous COVID-19 specific T cells
Up to 6 months
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
ARM A: Covid-19 Patients Receiving CTLsEXPERIMENTALPatients who have an HLA antigen in common with COVID-19 fighting T cells will receive the COVID-19 T cells. They will be premedicated with diphenhydramine and acetaminophen before the cells are infused intravenously. Close monitoring will continue in the patients' homes for 14 days. Three to six patients will receive a specific dose of T cells, and then if there are no serious side effects, the dose will be increased for the next group of patients. There are 4 doses of T cells to be tested, and each patient will complete a 14 day monitoring period before the next patient can be treated.
ARM B: Covid-19 Patients Not Receiving CTLsNO_INTERVENTIONPatients in the observation arm will not have inherited an HLA antigen in common with the COVID-19 T cells and so cannot receive the T cells. They will be monitored by the study staff for the 14 day monitoring period in their homes. They will be taught to record their own blood pressure, temperature, and oxygen level (pulse oximetry) at home and report this information, as well as their progress in getting over the COVID-19 infection, to the study staff every day by phone. The outcomes of patients on arm B will be compared to the outcomes of patients treated on Arm A to see if the T cells made a difference in how patients recovered from COVID-19. Patients in Arm B are not prevented from being treated with any available COVID-19 therapy.
Interventions
NameTypeDescription
Cytotoxic T LymphocytesDRUGGiven IV. Cytotoxic T Lymphocytes collected from healthy volunteer donors who have recovered from COVID-19. The T cells are collected, manufactured to be COVID-specific, and stored frozen at Thomas Jefferson University.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: Have a documented active COVID-19 infection and one of the following high-risk criteria: * Malignancy receiving radiation or chemotherapy in the prior 24 months. * Chronic lung disease such as asthma, COPD, interstitial lung disease, pulmonary hypertension or cystic fibrosis, r...

Countries:United States
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