On April 27, 2026 CytoDyn Inc. (OTCQB: CYDY) ("CytoDyn" or the "Company"), a clinical-stage oncology company advancing leronlimab, a first-in-class humanized monoclonal antibody targeting the CCR5 receptor with therapeutic potential across multiple indications, including metastatic triple-negative breast cancer ("mTNBC") and colorectal cancer ("mCRC"), reported the successful enrollment and initial dosing of the first participant in its Expanded Access Program (EAP) for patients with triple-negative breast cancer (TNBC).
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The EAP is designed to provide eligible patients access to leronlimab outside of a clinical study setting. The program is intended for patients who have exhausted available treatment options and are not eligible for ongoing or planned clinical studies, in accordance with U.S. Food and Drug Administration (FDA) guidelines.
"Dosing the first patient in our EAP marks an important step in making leronlimab available to individuals with urgent unmet medical needs, while also advancing our understanding of CCR5 biology in the treatment of aggressive cancers," said Jacob Lalezari, M.D., CEO of CytoDyn. "Data generated through this program may further inform how CCR5 inhibition influences the tumor microenvironment, including its potential role in modulating PD-L1 expression and supporting combination approaches with immune checkpoint inhibitors."
"For patients with advanced triple-negative breast cancer who have exhausted standard treatment options, expanded access programs can provide additional avenues for care," said Namita Chittoria, M.D., Assistant Professor at the Huntsman Cancer Institute and the University of Utah, and a member of CytoDyn’s Scientific Advisory Board. "Leronlimab is an investigational therapy being evaluated in this difficult-to-treat setting, and access outside of a clinical study may offer a meaningful option for select patients – both as an additional treatment opportunity and as a way to preserve valuable time with family. Beyond individual use, these programs also inform our understanding of emerging therapies."
In addition to providing compassionate access, the EAP is expected to generate real-world insights into the biological activity of leronlimab in heavily pretreated patients. Recent data, presented at the American Association for Cancer Research (AACR) (Free AACR Whitepaper) Annual Meeting 2026, highlight the potential role of CCR5 inhibition in modulating the tumor microenvironment in metastatic triple-negative breast cancer, with observed associations in PD-L1 expression and broader immune signaling pathways. Together, these findings provide a scientific foundation for the EAP and support continued exploration of leronlimab as a strategy to enhance responses to immune checkpoint inhibitor (ICI) therapies.
To support execution of the program, the Company has engaged With Every Patient (WEP Clinical) as the clinical research organization to support program execution, including patient identification, site coordination, and regulatory compliance. The EAP is now open for physician referrals, and CytoDyn expects to expand participation as additional sites are activated. The program will operate under applicable U.S. Food and Drug Administration (FDA) guidelines, and additional information for physicians and eligible patients, including referral details, is available on the Company’s website at www.cytodyn.com.
(Press release, CytoDyn, APR 27, 2026, View Source [SID1234664827])