Tourmaline Bio Announces Positive Topline Results from the Ongoing Phase 2 TRANQUILITY Trial Evaluating Pacibekitug in Patients with Elevated High-Sensitivity C-reactive Protein and Chronic Kidney Dis

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May 20, 2025
  • Tourmaline Bio (TRML, Financial) announces positive results from the Phase 2 TRANQUILITY trial.
  • Pacibekitug demonstrated significant reductions in hs-CRP with quarterly dosing.
  • The trial supports moving forward to Phase 3 trials for cardiovascular treatments.

Tourmaline Bio, Inc. (NASDAQ: TRML), a late-stage clinical biotechnology company, reported promising topline results from its ongoing Phase 2 TRANQUILITY trial. The trial evaluated pacibekitug, a long-acting, anti-IL-6 monoclonal antibody, for patients with elevated high-sensitivity C-reactive protein (hs-CRP) and chronic kidney disease (CKD).

All tested doses of pacibekitug showcased rapid, deep, and durable reductions in hs-CRP through Day 90 compared to placebo, achieving statistical significance (p<0.0001). Notably, the 50 mg quarterly dose achieved more than 85% reduction in hs-CRP, marking pacibekitug as the first IL-6 inhibitor to achieve such results with quarterly dosing.

Furthermore, the safety profile of pacibekitug was comparable to placebo, with adverse events recorded at 54% for the treatment group and 56% for the placebo group. A single COVID-19 related death was reported in the 25 mg quarterly arm, with no significant safety concerns detected.

Tourmaline plans to advance pacibekitug into a Phase 3 cardiovascular outcomes trial in atherosclerotic cardiovascular disease (ASCVD) and initiate a Phase 2 proof-of-concept trial in abdominal aortic aneurysm (AAA) in the second half of 2025.

The results underscore pacibekitug's potential to serve as a quarterly dosing option for reducing inflammatory markers in cardiovascular and other conditions, aligning with Tourmaline's commitment to transforming patient treatment.

Disclosures

I/We may personally own shares in some of the companies mentioned above. However, those positions are not material to either the company or to my/our portfolios.