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TOUR006

Phase 2

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

TOUR006 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 Trials2
Total Enrollment222

FDA Designations

No designations recorded

TOUR006 clinical trials

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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Recent Changes (Last 90 Days)

MEDIUMSep 11, 2026NCT06362759TRIAL_REMOVED: changed
MEDIUMSep 11, 2026NCT06362759TRIAL_REMOVED: changed
MEDIUMSep 11, 2026NCT06362759TRIAL_REMOVED: changed

Frequently asked questions about TOUR006

What is TOUR006?

TOUR006 is an investigational small molecule developed by Tourmaline Bio, Inc. (ticker TRML). It is being studied in Phase 2 clinical trials for chronic kidney disease and thyroid eye disease. It is designed to target IL-6, a cytokine, and is not yet approved for any indication.

What is TOUR006 used for?

TOUR006 is being evaluated for the treatment of chronic kidney disease and thyroid eye disease. In chronic kidney disease, it is studied in patients with elevated high-sensitivity C-reactive protein. Both uses remain investigational and are in Phase 2 clinical development.

What does TOUR006 target?

TOUR006 targets IL-6, a cytokine. By binding to this target, the drug is designed to modulate IL-6 signaling, which is associated with inflammation. This mechanism underlies its study in conditions where inflammation plays a role, such as chronic kidney disease with elevated hs-CRP and thyroid eye disease.

Who makes TOUR006?

TOUR006 is developed by Tourmaline Bio, Inc., which trades under the ticker TRML. The company is the sponsor of the clinical trials evaluating the drug in chronic kidney disease and thyroid eye disease.

What phase is TOUR006 in?

TOUR006 is in Phase 2 clinical development. It is investigational and has not been approved by the FDA. One Phase 2 trial in chronic kidney disease has been completed, and a Phase 2 trial in thyroid eye disease is active but not recruiting.

What clinical trials is TOUR006 in?

TOUR006 has been studied in two Phase 2 trials. NCT06362759 evaluated TOUR006 in patients with chronic kidney disease and elevated hs-CRP and is completed, with 143 participants. NCT06088979 is investigating TOUR006 in participants with thyroid eye disease and is active but not recruiting, with 79 participants.