nelitolimod (SD-101)

P1/2, N=23, Terminated, TriSalus Life Sciences, Inc. | N=89 --> 23 | Active, not recruiting --> Terminated; The decision was made to terminate the study after the completion of Phase 1b enrollment and not proceed with Phase 2. Trial termination was not due to patient safety or data concerns.

P1, N=67, Terminated, TriSalus Life Sciences, Inc. | Active, not recruiting --> Terminated; The decision was made to terminate the study after the completion of Phase 1 enrollment and not proceed with Phase 2. Trial termination was not due to patient safety or data concerns.

Transgenic pigs (oncopigs) with liver tumors received intra-arterial infusions of fluorescently labeled ODN2395 or nelitolimod either via PEDD with a specialized infusion device or with conventional microcatheter delivery in both lobar and selective infusions. PEDD of nelitolimod significantly reduced immunosuppressive MDSCs and an increase in cytotoxic CD8 + T cells within the LM. In conclusion, use of PEDD enhanced targeted therapeutic delivery in swine liver tumors and reduced tumor progression by promoting anti-tumor immunity in murine LM in association with suppressive myeloid cell elimination.

P1, N=10, Not yet recruiting, Northwell Health

P1, N=60, Active, not recruiting, TriSalus Life Sciences, Inc. | Recruiting --> Active, not recruiting | Trial completion date: Oct 2026 --> Oct 2027 | Trial primary completion date: Oct 2024 --> Sep 2027

P1, N=20, Recruiting, University of California, San Diego | Not yet recruiting --> Recruiting

P2, N=23, Active, not recruiting, David Oh | Trial completion date: Oct 2024 --> Aug 2025 | Trial primary completion date: Oct 2024 --> Aug 2025

P1, N=20, Not yet recruiting, University of California, San Diego

The combination of neoadjuvant paclitaxel and pembrolizumab ± SD101 intratumoral injection was associated with early increases in regional lymphadenopathy on MRI despite decreased breast tumor size. Increased lymphadenopathy was not associated with node positive disease at surgery.

The SQ route of CPI delivery was equivalent to Sys in combination with nelitolimod, suggesting SQ-CPI may be a rational choice in combination with PEDD of nelitolimod for liver tumor treatment.

Treatment included weekly paclitaxel (T) plus ICI-based tx x 4 cycles, followed by doxorubicin/cyclophosphamide (AC) every 2-3 weeks x 4. 6 completed investigational arms included ICIs: T+pembro x 4, T+pembro x 8 (+/- AC), T+pembro+SD101 (TLR9 agonist), T+durvalumab+olaparib, T+cemiplimab (cemi), and T+cemi+REGN3767 (anti-LAG-3)... The incidence of AI in EBC is higher than has previously been reported in advanced disease, with higher rates observed in those tx with dual immune modulation. No correlation was observed with age; correlation of AI with response predictive subtype and other clinicopathologic features is ongoing and will be presented. Given the high incidence of AI in EBC, close monitoring in the peri/postoperative setting and education of pts and providers is critical, as risk persists even after completion of tx.

"Haystack Oncology...has entered a research collaboration with TriSalus Life Sciences to evaluate therapeutic response and provide molecular insights in connection with the clinical development of TriSalus' SD-101, an investigational class C toll-like receptor-9 (TLR9) agonist. SD-101 is delivered via hepatic arterial infusion or pancreatic retrograde venous infusion in their phase 1 and 1b clinical trials using their proprietary Pressure-Enabled Drug Delivery™ (PEDD™) to overcome the challenges associated with intratumoral pressure for patients diagnosed with hepatocellular carcinoma, intrahepatic cholangiocarcinoma, and pancreatic adenocarcinoma."