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TNX-1500

Phase 2

Kidney Transplant | Small molecule | Nephrology |Tonix Pharmaceuticals Holding Corp.|Last Updated: Mar 16, 2026

Target and mechanism

Molecular targetCD40L
Target classProtein
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment5

FDA Designations

No designations recorded

Clinical trial landscape

TNX-1500 · 2 trials · 5 indications

Phase 2 1Phase 1 1
NCT07204080(TNX-1500) in Kidney Transplant RecipientsKidney Transplant
NOT YET_RECRUITING5 Analytics
PHASE2NOT YET_RECRUITING
(TNX-1500) in Kidney Transplant Recipients
Kidney TransplantUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Adverse Events in each subject
12 Months

The primary endpoint is the cumulative incidence of all AEs and SAEs in subjects treated with TNX-1500 at 12-months (Day 364, Week 52).

Number of Serious Adverse Events in each subject
12 Months

The primary endpoint is the cumulative incidence of all AEs and SAEs in subjects treated with TNX-1500 at 12-months (Day 364, Week 52).

Nature, frequency, and severity of treatment-emergent adverse events (TEAEs)
From enrollment to the end of the study at Day 120

Secondary Endpoints

Incidence of Biopsy Proven Acute Rejection
12 months
Incidence of treatment for acute rejection
12 Months
Incidence of de novo DSA development
Months 1, 3, 6, 9, 12
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Kidney Transplant RecipientEXPERIMENTAL -
Arm 1: TNX-1500 3 mg/kgEXPERIMENTAL -
Arm 2: TNX-1500 10 mg/kgEXPERIMENTAL -
Arm 3: TNX-1500 30 mg/kgEXPERIMENTAL -
Arm 4: PlaceboEXPERIMENTAL -

Interventions

NameTypeDescription
TNX-1500DRUGThis is an open-label, single-center, single-arm study to assess the safety and efficacy of TNX-1500, an Fc-modified anti-DF154 mAb in five adult kidney transplant recipients.
Kidney TransplantPROCEDUREKidney Transplant
Placebo: USP 0.9% sterile saline for injectionDRUGThe placebo comparator arm (Arm 4)
Keyhole Limpet Hemocyanin (KLH)BIOLOGICALKLH is not the primary therapeutic drug being tested. Instead, it is an "immunogenic T-cell dependent antigen" used as a challenge tool to assess the pharmacological and immunosuppressant effects of TNX-1500
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites2

Inclusion Criteria: 1. Male or female subjects ≥18 to 75 years of age. 2. Kidney transplant candidates with chronic kidney disease (stage IV or V) or end-stage kidney disease evaluated and listed for transplantation at Massachusetts General Hospital. 3. Recipient of an ABO-compatible, non-human leu...

Countries:United States
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Frequently asked questions about TNX-1500

What is TNX-1500 used for?

TNX-1500 is an investigational small molecule being developed for use in kidney transplant recipients to address kidney transplant failure and rejection, and for immunosuppression after kidney transplantation. It is also being studied in a Phase 1 first-in-human trial involving healthy subjects to evaluate its safety, tolerability, pharmacokinetics, and pharmacodynamics.

What does TNX-1500 target?

TNX-1500 targets CD40L, a protein involved in immune system signaling. By targeting CD40L, TNX-1500 is being studied for its potential role in immunosuppression in the setting of kidney transplantation.

Who makes TNX-1500?

TNX-1500 is being developed by Tonix Pharmaceuticals Holding Corp., a biopharmaceutical company traded on the NASDAQ under the ticker symbol TNXP.

What phase is TNX-1500 in?

TNX-1500 is in Phase 2 clinical development for kidney transplant recipients. A Phase 1 first-in-human study in healthy subjects has been completed. TNX-1500 is investigational and has not been approved by the FDA.

What clinical trials is TNX-1500 in?

TNX-1500 is involved in two clinical trials. NCT07204080 is a Phase 2 trial in kidney transplant recipients, not yet recruiting, with an enrollment of 5. NCT07473752 is a completed Phase 1 randomized, double-blind, placebo-controlled single ascending dose study in healthy subjects with an enrollment of 26.

Is TNX-1500 the same as any other drug?

No alternative names for TNX-1500 have been disclosed. It is identified solely by the code name TNX-1500 in clinical trial registrations.