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TOUR006

Phase 2

Chronic Kidney Diseases | Small molecule | Nephrology |Tourmaline Bio, Inc.|Last Updated: Aug 11, 2026

Target and mechanism

Molecular targetIL-6
Target classCytokine
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment143

FDA Designations

No designations recorded

Clinical trial landscape

TOUR006 · 2 trials · 10 indications

Phase 2 2
NCT06362759A Study to Evaluate TOUR006 in Patients With Chronic Kidney Disease and Elevated Hs-CRPChronic Kidney Diseases
COMPLETED143 Analytics
NCT06088979A Study to Investigate Efficacy and Safety of TOUR006 in Participants 18 to 80 Years of Age With Thyroid Eye DiseaseThyroid Eye Disease
ACTIVE NOT_RECRUITING79 Analytics
PHASE2COMPLETED
A Study to Evaluate TOUR006 in Patients With Chronic Kidney Disease and Elevated Hs-CRP
Chronic Kidney DiseasesUnlock trial analytics
PHASE2ACTIVE NOT_RECRUITING
A Study to Investigate Efficacy and Safety of TOUR006 in Participants 18 to 80 Years of Age With Thyroid Eye Disease
Thyroid Eye DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Time-Averaged Percent Change From Baseline in High-Sensitivity C-Reactive Protein (Hs-CRP) Through Day 90
Baseline through 90 days. Baseline is defined as the average of the last two available visits prior to study treatment administration.

Time-averaged percent change from baseline in high-sensitivity C-reactive protein (hs-CRP) through Day 90. The time-averaged percent change from baseline in hs-CRP is the area under the curve for percent change from baseline in hs-CRP divided by the number of days from the observed Day 30 to Day 90 visits (approximately 60 days if visits occur according to the protocol). The calculation uses the linear trapezoidal rule according to the observed visit days.

Percentage of participants achieving a proptosis response defined as a ≥2 mm reduction in proptosis from baseline in the study eye without deterioration [≥2 mm increase] of proptosis in the fellow eye and without need for rescue therapy/intervention).
20 weeks

Secondary Endpoints

Proportion of Participants With Time-averaged Hs-CRP < 2 mg/L (90 Days)
Baseline through 90 days. Baseline is defined as the average of the last two available visits prior to study treatment administration.
Time-Averaged Percent Change From Baseline in High-Sensitivity C-Reactive Protein (Hs-CRP) Through Day 180
Baseline through 180 days. Baseline is defined as the average of the last two available visits prior to study treatment administration.
Evaluate the Pharmacokinetics by Measuring Serum Concentrations of TOUR006
Baseline through Day 365
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
TOUR006 - 50 MGEXPERIMENTAL50 mg administered subcutaneously at Day 1 and Day 90 (Placebo administered at 30, 60, 120, and 150 Day timepoints)
TOUR006 - 25 MGEXPERIMENTAL25 mg administered subcutaneously at Day 1 and Day 90 (Placebo administered at 30, 60, 120, and 150 Day timepoints)
TOUR006 - 15 MGEXPERIMENTAL15 mg administered subcutaneously at Days 1, 30, 60, 90, 120, and 150
PlaceboPLACEBO_COMPARATORAdministered subcutaneously at Days 1, 30, 60, 90, 120, and 150
TOUR006 - 20 MGEXPERIMENTALIn part A of the study, participants will receive a total of three 20 mg subcutaneous injections: 1 injection every 8 weeks (Day 1, Week 8, Week 16) followed by treatment in part B of the study based on proptosis response and rescue therapy use.

Interventions

NameTypeDescription
TOUR006 - 50 MGDRUGTOUR006 50 MG
TOUR006 - 25 MGDRUGTOUR006 25 MG
TOUR006 - 15 MGDRUGTOUR006 15 MG
PlaceboOTHERPlacebo
TOUR006 - 20 MGDRUGTOUR006 20 MG
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites38

Inclusion Criteria: * Age ≥18 years at time of ICF signature. * Serum hs-CRP level ≥2.0 mg/L and \<15 mg/L * Diagnosis of chronic kidney disease, eGFR ≥15 and \<60 mL/min/1.73 m2 or eGFR ≥60 mL/min/1.73m2 and UPCR\>200 mg/g * Received COVID-19 vaccine at least 30 days prior to the Screening visit, ...

Countries:United StatesBrazilFranceItalyJordanLatviaNew ZealandPuerto RicoSlovakiaSouth KoreaSpain
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Frequently asked questions about TOUR006

What is TOUR006 used for?

TOUR006 is an investigational small molecule being developed for Thyroid Eye Disease and Chronic Kidney Diseases. In Thyroid Eye Disease, it is being studied in participants 18 to 80 years of age. In Chronic Kidney Disease, it is being evaluated in patients with elevated high-sensitivity C-reactive protein (hs-CRP).

What does TOUR006 target?

TOUR006 targets IL-6, a cytokine involved in inflammatory pathways. By targeting IL-6, the drug aims to modulate inflammation that contributes to conditions like Thyroid Eye Disease and Chronic Kidney Disease. This mechanism is central to its investigational use in these indications.

Who makes TOUR006?

TOUR006 is being developed by Tourmaline Bio, Inc., a biopharmaceutical company. The company's stock trades under the ticker symbol TRML. Tourmaline Bio is advancing TOUR006 through clinical trials for Thyroid Eye Disease and Chronic Kidney Disease.

What phase is TOUR006 in?

TOUR006 is in Phase 2 clinical development. It is not FDA approved and remains investigational. The drug is being studied in two Phase 2 trials: one for Thyroid Eye Disease and one for Chronic Kidney Disease with elevated hs-CRP. Both trials are randomized, double-blind, and placebo-controlled.

What clinical trials is TOUR006 in?

TOUR006 is being studied in two Phase 2 clinical trials. NCT06088979 is an active, not recruiting study in Thyroid Eye Disease with 79 participants across multiple countries. NCT06362759 is a completed study in Chronic Kidney Disease with elevated hs-CRP, enrolling 143 participants in the United States.

Is TOUR006 the same as TOUR006 - 20 MG?

Yes, TOUR006 is also known as TOUR006 - 20 MG. This alternative name refers to the same drug, likely indicating a specific dosage form or strength. Readers searching for either name will find information about the same investigational small molecule being developed by Tourmaline Bio.