A Phase 2 interventional study of TOUR006 - 50 MG and TOUR006 - 25 MG in Chronic Kidney Diseases, Chronic Kidney Insufficiency and Chronic Renal Diseases, sponsored by Tourmaline Bio, Inc., a Novartis Company. Completed at 38 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-11.
Sponsored by Tourmaline Bio, Inc., a Novartis Company · Phase 2, Interventional, and Treatment
This study will evaluate the safety, tolerability, pharmacokinetics, and CRP-lowering effect of quarterly and monthly subcutaneous administration of TOUR006 (also known as pacibekitug) in participants with chronic kidney disease and elevated hs-CRP.
Previous clinical studies have suggested that IL-6-driven inflammation plays a key role in the pathogenesis of cardiovascular diseases including atherosclerotic cardiovascular disease (ASCVD) and heart failure. This Phase 2 study will evaluate the safety, tolerability, pharmacokinetics, and CRP-lowering effect of quarterly and monthly subcutaneous administration of TOUR006, a fully human monoclonal antibody against IL-6. TOUR006 binds the IL-6 cytokine and inhibits downstream IL-6 signaling, thereby reducing the pharmacodynamic marker, hs-CRP.
3,144 studies on the registry are indexed under Renal Insufficiency, Chronic; 704 are open to participants now.
This study's enrollment of 143 is above the median of 74 across 2,176 interventional studies indexed under Renal Insufficiency, Chronic.
Browse Renal Insufficiency, Chronic studies →Tourmaline Bio, Inc., a Novartis Company is the lead sponsor of 2 studies on the registry; none are open to participants now.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
50 mg administered subcutaneously at Day 1 and Day 90 (Placebo administered at 30, 60, 120, and 150 Day timepoints)
Drug: TOUR006 - 50 MG
25 mg administered subcutaneously at Day 1 and Day 90 (Placebo administered at 30, 60, 120, and 150 Day timepoints)
Drug: TOUR006 - 25 MG
15 mg administered subcutaneously at Days 1, 30, 60, 90, 120, and 150
Drug: TOUR006 - 15 MG
Administered subcutaneously at Days 1, 30, 60, 90, 120, and 150
Other: Placebo
TOUR006 50 MG
Also known as: Pacibekitug 50 MG
TOUR006 25 MG
Also known as: Pacibekitug 25 MG
TOUR006 15 MG
Also known as: Pacibekitug 15 MG
Placebo
Time-Averaged Percent Change From Baseline in High-Sensitivity C-Reactive Protein (Hs-CRP) Through Day 90
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.
Time frame: Baseline through 90 days. Baseline is defined as the average of the last two available visits prior to study treatment administration.
Proportion of Participants With Time-averaged Hs-CRP < 2 mg/L (90 Days)
Proportion of participants with time-averaged hs-CRP \< 2 mg/L (90 Days)
Time frame: 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
Time-averaged percent change from baseline in high-sensitivity C-reactive protein (hs-CRP) through Day 180. 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 180 visits (approximately 150 days if visits occur according to the protocol). The calculation uses the linear trapezoidal rule according to the observed visit days.
Time frame: 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
Mean trough serum concentrations (ng/mL) of TOUR006 at Days 30, 60, 90,120, 150, 180, 240, 300, and 365. On dosing visits (BL and Day 30, 60, 90, 120, and 150 visits), PK samples were collected pre-dose. PK blood samples were collected on Study Days 180, 240, 300, and 365 at approximately the same time as the pre-dose samples were collected on previous dosing visits.
Time frame: Baseline through Day 365
Evaluate the Safety and Tolerability of TOUR006 in Participants With Elevated Cardiovascular Risk and CKD
Evaluates the percentage of participants with treatment emergent adverse events (AE), which includes serious and nonserious AEs. Treatment-emergent is defined as AEs that initiated or worsened after receiving at least 1 dose of study drug and includes a total of 141 participants.
Time frame: Baseline through Day 365.
Evaluate the Safety and Tolerability of TOUR006 in Participants With Elevated Cardiovascular Risk and CKD
Evaluates the percentage of participants with serious treatment emergent adverse events. Treatment-emergent is defined as AEs that initiated or worsened after receiving at least 1 dose of study drug and includes a total of 141 participants.
Time frame: Baseline through Day 365.
Participants were recruited from 49 study centers in the United States between May 2024 and December 2024. Of 49 sites, 38 sites enrolled participants. The first participant was enrolled on May 15, 2024 and the last participant was enrolled on December 3, 2024.
| Milestone | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG |
|---|---|---|---|---|
| Started | 36 | 35 | 36 | 36 |
| Dosed | 36 | 35 | 35 | 35 |
| Completed | 33 | 33 | 29 | 32 |
| Not completed | 3 | 2 | 7 | 4 |
| Withdrew: Withdrawal by subject | 2 | 0 | 4 | 4 |
| Withdrew: Death | 0 | 1 | 1 | 0 |
| Withdrew: Adverse event | 0 | 0 | 1 | 0 |
| Withdrew: Non-compliance | 1 | 0 | 0 | 0 |
| Withdrew: Lost to follow-up | 0 | 1 | 0 | 0 |
| Withdrew: Eligibility violation | 0 | 0 | 1 | 0 |
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.
| Time-Averaged Percent Change in hsCRP | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG |
|---|---|---|---|---|
| Time-Averaged Percent Change From Baseline in High-Sensitivity C-Reactive Protein (Hs-CRP) Through Day 90 | -14.8 (-35.8 to 17.4) | -75.2 (-82.3 to -69.7) | -85.7 (-92.3 to -78.0) | -84.7 (-92.3 to -70.3) |
Proportion of participants with time-averaged hs-CRP \< 2 mg/L (90 Days)
| Participants | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG |
|---|---|---|---|---|
| Proportion of Participants With Time-averaged Hs-CRP < 2 mg/L (90 Days) | 8 | 25 | 24 | 30 |
Time-averaged percent change from baseline in high-sensitivity C-reactive protein (hs-CRP) through Day 180. 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 180 visits (approximately 150 days if visits occur according to the protocol). The calculation uses the linear trapezoidal rule according to the observed visit days.
| Time-averaged percent change in hsCRP | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG |
|---|---|---|---|---|
| Time-Averaged Percent Change From Baseline in High-Sensitivity C-Reactive Protein (Hs-CRP) Through Day 180 | 6.8 (-27.2 to 51.9) | -76.4 (-82.1 to -65.9) | -85.3 (-93.1 to -72.2) | -88.8 (-91.9 to -72.8) |
Mean trough serum concentrations (ng/mL) of TOUR006 at Days 30, 60, 90,120, 150, 180, 240, 300, and 365. On dosing visits (BL and Day 30, 60, 90, 120, and 150 visits), PK samples were collected pre-dose. PK blood samples were collected on Study Days 180, 240, 300, and 365 at approximately the same time as the pre-dose samples were collected on previous dosing visits.
| ng/mL | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG |
|---|---|---|---|
| Day 30 | 1347.86 ± 544.50 | 2753.95 ± 718.79 | 857.00 ± 335.31 |
| Day 60 | 964.92 ± 345.99 | 1735.04 ± 597.82 | 1473.06 ± 559.41 |
| Day 90 | 668.35 ± 257.77 | 1117.06 ± 416.79 | 1830.07 ± 742.07 |
| Day 120 | 1999.28 ± 692.93 | 3502.15 ± 1129.17 | 1963.65 ± 799.95 |
| Day 150 | 1361.08 ± 507.40 | 2098.06 ± 680.55 | 2031.46 ± 986.05 |
| Day 180 | 872.10 ± 322.20 | 1383.64 ± 609.80 | 2067.92 ± 909.09 |
| Day 240 | 395.98 ± 197.27 | 566.17 ± 371.68 | 1025.93 ± 610.17 |
| Day 300 | 180.37 ± 131.07 | 241.66 ± 200.18 | 419.44 ± 333.82 |
| Day 365 | 62.53 ± 89.77 | 87.27 ± 106.79 | 164.45 ± 171.32 |
Evaluates the percentage of participants with treatment emergent adverse events (AE), which includes serious and nonserious AEs. Treatment-emergent is defined as AEs that initiated or worsened after receiving at least 1 dose of study drug and includes a total of 141 participants.
| Participants | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG |
|---|---|---|---|---|
| Evaluate the Safety and Tolerability of TOUR006 in Participants With Elevated Cardiovascular Risk and CKD | 23 | 22 | 21 | 21 |
Evaluates the percentage of participants with serious treatment emergent adverse events. Treatment-emergent is defined as AEs that initiated or worsened after receiving at least 1 dose of study drug and includes a total of 141 participants.
| Participants | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG |
|---|---|---|---|---|
| Evaluate the Safety and Tolerability of TOUR006 in Participants With Elevated Cardiovascular Risk and CKD | 6 | 7 | 6 | 3 |
Collected over Baseline through Day 365.. Non-serious events are listed at a 1% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Placebo | 0/36 (0%) | 6/36 (16.7%) | 22/36 (61.1%) |
| TOUR006 - 25 MG | 1/35 (2.9%) | 7/35 (20%) | 21/35 (60%) |
| TOUR006 - 50 MG | 1/35 (2.9%) | 6/35 (17.1%) | 21/35 (60%) |
| TOUR006 - 15 MG | 0/35 (0%) | 3/35 (8.6%) | 21/35 (60%) |
| Event | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG |
|---|---|---|---|---|
| Acute Kidney InjuryRenal and urinary disorders | 0/36 | 0/35 | 1/35 | 2/35 |
| PneumoniaInfections and infestations | 2/36 | 1/35 | 1/35 | 0/35 |
| Cardiac Failure CongestiveCardiac disorders | 2/36 | 0/35 | 1/35 | 0/35 |
| Appendicitis PerforatedInfections and infestations | 0/36 | 0/35 | 1/35 | 0/35 |
| BacteraemiaInfections and infestations | 0/36 | 1/35 | 0/35 | 0/35 |
| COVID-19Infections and infestations | 0/36 | 1/35 | 0/35 | 0/35 |
| Gastroenteritis RotavirusInfections and infestations | 0/36 | 1/35 | 0/35 | 0/35 |
| Necrotising Fasciitis StreptococcalInfections and infestations | 0/36 | 1/35 | 0/35 | 0/35 |
| SepsisInfections and infestations | 0/36 | 1/35 | 0/35 | 0/35 |
| Wound CellulitisInfections and infestations | 0/36 | 1/35 | 0/35 | 0/35 |
| Event | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG |
|---|---|---|---|---|
| Urinary Tract InfectionInfections and infestations | 4/36 | 1/35 | 2/35 | 4/35 |
| Back PainMusculoskeletal and connective tissue disorders | 1/36 | 3/35 | 0/35 | 1/35 |
| HypertensionVascular disorders | 2/36 | 0/35 | 3/35 | 0/35 |
| COVID-19Infections and infestations | 1/36 | 0/35 | 1/35 | 2/35 |
| PneumoniaInfections and infestations | 2/36 | 0/35 | 2/35 | 1/35 |
| Upper Respiratory Tract InfectionInfections and infestations | 2/36 | 1/35 | 2/35 | 0/35 |
| Ear InfectionInfections and infestations | 1/36 | 0/35 | 2/35 | 0/35 |
| Otitis MediaInfections and infestations | 0/36 | 0/35 | 2/35 | 0/35 |
| HypokalaemiaMetabolism and nutrition disorders | 0/36 | 0/35 | 1/35 | 2/35 |
| HypercalcaemiaMetabolism and nutrition disorders | 0/36 | 2/35 | 0/35 | 0/35 |
Includes all randomized participants who received any amount of investigational product, had a baseline hs-CRP ≥1.9 mg/L, and did not miss more than one post-baseline hs-CRP assessment in the first 90 days of study. (Modified-ITT)
| Age, Continuous(years) | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG | Total |
|---|---|---|---|---|---|
| Median | 72 (62 to 77) | 73 (66 to 76) | 70 (61 to 78) | 65 (60 to 73) | 71 (62 to 77) |
| Sex/Gender, Customized(Participants) | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG | Total |
|---|---|---|---|---|---|
| Female | 21 | 17 | 19 | 21 | 78 |
| Ethnicity (NIH/OMB)(Participants) | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG | Total |
|---|---|---|---|---|---|
| Hispanic or Latino | 8 | 10 | 7 | 7 | 32 |
| Not Hispanic or Latino | 23 | 21 | 23 | 27 | 94 |
| Unknown or Not Reported | 0 | 0 | 0 | 0 | 0 |
| Race (NIH/OMB)(Participants) | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG | Total |
|---|---|---|---|---|---|
| American Indian or Alaska Native | 0 | 0 | 0 | 0 | 0 |
| Asian | 0 | 0 | 0 | 0 | 0 |
| Native Hawaiian or Other Pacific Islander | 0 | 0 | 0 | 0 | 0 |
| Black or African American | 7 | 8 | 11 | 12 | 38 |
| White | 24 | 23 | 19 | 21 | 87 |
| More than one race | 0 | 0 | 0 | 0 | 0 |
| Unknown or Not Reported | 0 | 0 | 0 | 1 | 1 |
| Region of Enrollment(participants) | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG | Total |
|---|---|---|---|---|---|
| United States | 31 | 31 | 30 | 34 | 126 |
| CKD Stage (IWRS)(Participants) | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG | Total |
|---|---|---|---|---|---|
| CKD Stage 3 or UPCR ≥ 200 mg/g and eGFR ≥ 60 mL/min/1.73m2 | 26 | 27 | 25 | 30 | 108 |
| CKD Stage 4 | 5 | 4 | 5 | 4 | 18 |
| hs-CRP, mg/L(mg/L) | Placebo | TOUR006 - 25 MG | TOUR006 - 50 MG | TOUR006 - 15 MG | Total |
|---|---|---|---|---|---|
| Median | 3.60 (2.70 to 5.10) | 3.90 (2.35 to 5.55) | 5.18 (3.60 to 7.35) | 4.73 (3.80 to 7.40) | 4.45 (3.00 to 6.15) |
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Tourmaline Bio, Inc., a Novartis Company