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A Study of CA-170 (Oral PD-L1, PD-L2 and VISTA Checkpoint Antagonist) in Patients With Advanced Tumors and Lymphomas

A Phase 1, Open-Label, Dose Escalation and Dose Expansion Trial Evaluating the Safety, Pharmacokinetics, Pharmacodynamics, and Clinical Effects of Orally Administered CA-170 in Patients With Advanced Tumors and Lymphomas

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02812875
Enrollment
71
Registered
2016-06-24
Start date
2016-05-31
Completion date
2020-05-07
Last updated
2020-06-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Advanced Solid Tumors or Lymphomas

Keywords

Mesothelioma, PD-L1, VISTA, PD-1

Brief summary

CA-170 is a rationally designed and orally available, small molecule that directly targets the Programmed death-ligands 1 and 2 (PD-L1/PD-L2), and V-domain Ig suppressor of T cell activation (VISTA) immune checkpoints and results in activation of T cell proliferation and cytokine production. This is a multi-center, open-label, Phase 1 trial of orally administered CA-170 in adult patients with advanced solid tumors or lymphomas who have progressed or are non-responsive to available therapies and for which no standard therapy exists.

Interventions

DRUGCA-170

Dose escalation stage (Phase 1a) accelerated titration and standard 3+3 dose escalation in patients with advanced solid tumor or lymphoma. Dose expansion stage (Phase 1b) in patients with tumors that are shown to be responsive to anti-PD-1 or anti-PD-L1 checkpoint inhibitors and/or in tumor types known to express PD-L1 or VISTA, including but not limited to: mesothelioma, melanoma, non-small cell lung cancer, renal cell carcinoma, Hodgkin lymphoma, triple negative breast cancer, head and neck cancer, colorectal cancer, gastric cancer, bladder cancer, and ovarian cancer.

Sponsors

Curis, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Males and females ≥ 18 years of age; 2. Life expectancy of at least 3 months; 3. ECOG PS ≤ 1; 4. Acceptable bone marrow and organ function at screening; 5. Ability to swallow and retain oral medications; 6. Negative serum pregnancy test in women of childbearing potential; 7. Measurable disease; 8. Tumor for which standard therapy, including approved anti-PD-1 or anti-PD-L1 therapy, when applicable, does not exist or is no longer effective. For patients enrolling into backfill of dose levels at or below the MTD/RP2D, patients with tumor types known to have a high VISTA expression (such as metastatic malignant pleural mesothelioma of epithelioid histology).

Exclusion criteria

1. Prior treatment anti-cancer therapy or use of any investigational agent within the past 28 days or 5 half-lives, whichever is shorter; 2. Toxicity from prior chemotherapy that has not resolved to Grade ≤ 1; 3. Radiotherapy within the last 21 days; 4. Primary brain tumors or CNS metastases; 5. Major or minor surgery \< 28 and \<14 days from the start of treatment, respectively; 6. Active autoimmune disease or any medical condition requiring the use of systemic immunosuppressive medications; 7. Endocrinopathies, unless on stable hormone replacement therapy; 8. Active infection requiring systemic therapy; 9. Receipt of live vaccines against infectious diseases within 28 days; 10. HIV positive or an AIDS-related illness; 11. Active/chronic HBV or HCV infection; 12. Uncontrolled CHF (NYHA Class 2-4), angina, MI, CVA, coronary/peripheral artery bypass graft surgery, TIA, or PE in prior 3 months; 13. Cardiac dysrhythmias; 14. Gastrointestinal disease that interferes with receipt of oral drugs; 15. Concomitant malignancy; 16. Pregnant or lactating female;

Design outcomes

Primary

MeasureTime frame
The number of patients with a dose-limiting toxicity (DLT) in the first treatment cycleApproximately 24 months
Maximum tolerated dose (MTD) of CA-170Approximately 24 months
Recommended Phase 2 Dose (RP2D) of CA-170Approximately 24 months

Secondary

MeasureTime frameDescription
Pharmacokinetic (PK) Profile of CA-170From Day 1 of Cycle 1(each cycle is 21 days)Maximum Concentration (Cmax)
Preliminary Anti-tumor Activity of CA-170 based on RECIST and Immune Related Response Criterion (irRC) for Solid Tumors or Cheson for Lymphoma36 months

Countries

South Korea, Spain, United Kingdom, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 26, 2026