On September 14, 2026 Telomir Pharmaceuticals, Inc. (NASDAQ:TELO), a clinical-stage biotechnology company developing small-molecule therapeutics targeting epigenetic and metabolic drivers of cancer, reported new research findings from The Ohio State University College of Veterinary Medicine demonstrating that Telomir-Zn produces inhibition of cell growth across human and canine osteosarcoma models. The findings establish a translational foundation for evaluating the compound in a naturally occurring disease setting while the company’s TNBC program simultaneously advances toward site initiation and Phase 1/2 patient enrollment.

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Research Findings
Conducted under the direction of Shay Bracha, DVM, MS, DACVIM (Oncology) at Ohio State’s College of Veterinary Medicine, the study examined Telomir-Zn across three osteosarcoma cell line models: HOS (human), D17 (canine), and Abrams (canine). Researchers evaluated the dose-dependent anti-tumor activity of the compound across all three models.

All three osteosarcoma cell lines demonstrated growth inhibition at similar low drug concentrations. "Osteosarcoma in large-breed dogs remains devastating, with limited treatment options and poor outcomes," noted Bracha, an associate professor at The Ohio State University College of Veterinary Medicine. "These findings suggest Telomir-Zn may offer a meaningful therapeutic opportunity for veterinary patients. The consistency of anti-tumor activity across both canine and human cell lines is particularly compelling because it positions us to explore efficacy in naturally occurring canine osteosarcoma—a model that could accelerate development for both animals and humans."

These results validate the therapeutic potential of Telomir-Zn in osteosarcoma and support further translational investigation.

Osteosarcoma: An Unmet Clinical Need
Osteosarcoma is the most common primary bone malignancy in children and young adults. Despite decades of chemotherapy-based treatment, survival rates for metastatic disease remain below 30%, with minimal improvement over three decades. In veterinary medicine, osteosarcoma is similarly devastating in large-breed dogs, accounting for the majority of primary bone tumors.

The biological similarities between canine and human osteosarcoma, including genetics, tumor biology, and therapeutic response patterns, make the canine model one of the most clinically predictive disease models available for translational research.

Strategic Development Pathway
Based on these findings, Telomir is assessing osteosarcoma development in canine models as a potential therapeutic pathway, which could support both veterinary indication development and translational advancement toward human osteosarcoma:

Track 1: TNBC in Humans — The company’s TNBC program is advancing toward site initiation and Phase 1/2 patient enrollment under an active IND cleared by the FDA, targeting advanced or metastatic triple-negative breast cancer.
Track 2: Osteosarcoma in Dogs — Based on these preclinical findings, Telomir is in conversations with The Ohio State University College of Veterinary Medicine and assessing next steps for a potential in vivo efficacy study in canine osteosarcoma. Such research could accelerate clinical development in canine and human osteosarcoma.
While the company’s immediate focus remains advancing TNBC toward site initiation and Phase 1/2 patient enrollment, these preclinical findings position potential osteosarcoma development in canine models as a strategic opportunity. If pursued, such a dual-pathway approach could expand the therapeutic indication profile while advancing our platform.

The Iron-Modulation Platform
Telomir-Zn targets intracellular iron and copper homeostasis to modulate epigenetic pathways. The mechanism involves disruption of intracellular labile iron pools and inhibition of iron-dependent histone demethylases (KDMs), which reverses cancer-associated epigenetic silencing.

The company’s strategic focus is triple-negative breast cancer, where the TNBC program is advancing toward site initiation and Phase 1/2 patient enrollment. The osteosarcoma preclinical findings provide an additional translational opportunity to validate the mechanism in a naturally occurring disease model (canine) while simultaneously advancing the lead TNBC indication.

(Press release, Telomir Pharmaceutical, SEP 14, 2026, View Source [SID1234670847])