Safety and Preliminary Efficacy of VIR-5525 and VIR-5525 + Pembrolizumab in Participants With Locally Advanced or Metastatic Solid Tumors

Launched by VIR BIOTECHNOLOGY, INC. · Apr 28, 2025

Keywords

ClinConnect Summary

This clinical trial is studying a new treatment called VIR-5525, both on its own and together with another medication called pembrolizumab. The goal is to find out if these treatments are safe and if they can help patients with certain types of advanced solid tumors, particularly those that express a protein called EGFR. This study is in the early phase, which means it's the first time these treatments are being tested in people. It will be conducted in four parts, gradually increasing the doses to see how well they work and to monitor any potential side effects.

To be eligible for this trial, participants must be at least 18 years old and have a specific type of solid tumor that cannot be surgically removed. They should also have a good performance status, meaning they can carry out daily activities with minimal assistance, and their disease should be measurable according to certain guidelines. Additionally, participants should not have any serious infections or certain medical conditions that could increase the risk of side effects. If someone joins the study, they can expect to receive close monitoring and support throughout the treatment process. This trial is not yet recruiting, so interested individuals should keep an eye out for updates on participation.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • I 01. Are ≥ 18 years of age, or at the country's legal age of majority of the legal adult age is \>18 years, at the time of signing the ICF.
• • I 02. Have an ECOG performance status of 0 to 1.
• • I 03. Have a life expectancy of at least 12 weeks.
• • I 04. Have histological, pathological, or cytological confirmation of disease type that is unresectable, locally advanced, or metastatic.
• • I 05. Have measurable disease per RECIST v1.1 as assessed by the local site investigator/radiology. Lesions situated in a previously irradiated area are considered measurable if progression has been demonstrated in such lesions.
• I 06. Have diseases under study, lines of therapy, and biomarker status, as follows:
• Have one of the following:
• • • (Parts 1 and 3): NSCLC (nonsquamous or squamous histology), CRC, HNSCC, or CSCC.
• • Note: Participants with nasopharyngeal tumors are eligible. Note: Participants with upper esophageal or salivary gland tumors are not eligible.
• • OR
• • • Have a solid tumor with EGFR amplification (as previously determined locally with an analytically validated assay in a certified testing laboratory).
• • Have no available standard systemic therapy; or standard therapy is intolerable, not effective, or not accessible; or participant has refused standard therapy.
• Exclusion Criteria:
• • E 01. Are a WOCBP with a positive serum or urine pregnancy test within 72 hours prior to treatment.
• E 02. Have acute or chronic infections, including the following:
• • Acute or chronic active Epstein-Barr virus (EBV) infection (Exception: asymptomatic EBV-positive participants are still eligible)
• • Chronic active EBV disease defined as a chronic illness lasting at least 6 months, an increased EBV level in either the tissue or the blood, and lack of evidence of a known underlying immunodeficiency
• • History of hepatitis B infection (defined as hepatitis B surface antigen \[HBsAg\] reactive) or known active hepatitis C virus (HCV) infection (defined as HCV \[HCV RNA; qualitative\] is detected)
• • History of HIV infection. No HIV testing is required unless mandated by the local health authority.
• • Active infection requiring systemic therapy within 14 days of Cycle 1 Day 1
• • Known positive COVID-19 test result at screening (Exception: If follow-up test is negative, participants may be eligible if asymptomatic and upon consultation with medical monitor)
• • E 03. Have a concomitant medical or inflammatory condition that may increase the risk of toxicity to VIR-5525 or pembrolizumab, per the investigator
• • E 04. Have a QT interval corrected by Fridericia's method (QTcF) that is \>480 ms
• • E 05. Have received prior systemic anti-cancer therapy, including investigational agents, within 5 half-lives prior to first dose of study intervention. For drugs with a long t1/2, such as mAbs, or for drugs for which the t1/2 is not known, the last dose should not have been within 28 days prior to first dose of study intervention.
• • Note: If the participant has had major surgery, the participant must have recovered adequately from the procedure and/or any complications from the surgery prior to starting study intervention.
• • E 06. Have received prior radiotherapy within 2 weeks of start of study intervention Note: Participants must have recovered from all radiation-related toxicities to Grade ≤1 or baseline, must not require corticosteroids, and must not have had radiation pneumonitis.
• • Exception: External beam radiotherapy, including palliative external radiation, is allowed.
• • A 1-week washout is permitted for palliative radiation (≤2 weeks of radiotherapy) to non-CNS disease.
• • The above information is not intended to contain all considerations relevant to the potential participation in a clinical trial.