Health Canada Authorizes Emergency Use of Leronlimab for Treatment of First Triple-Negative Breast Cancer Patient in Canada

CytoDyn Inc. (OTCQB: CYDY) (“CytoDyn” or the “Company”), a late-stage biotechnology company developing leronlimab, a CCR5 antagonist with the potential for multiple therapeutic indications, today announced that Health Canada authorized the emergency use of leronlimab for the treatment of a patient with metastatic triple-negative breast cancer (mTNBC).

Nader Pourhassan, Ph.D., CytoDyn’s President and Chief Executive Officer, said, “We are encouraged by Health Canada’s emergency use approval of leronlimab, which we believe could have potential benefit as a therapeutic option for treating mTNBC. We now plan to ask Health Canada to allow expanded access use for all mTNBC patients who might have no other treatment options. We are also seeking similar approvals in other countries and look forward to providing leronlimab for mTNBC patients, as well as for treatment of other solid tumor cancers, in the future. In addition, we will be filing for expanded access use for mTNBC patients in the U.S. shortly.”

About CytoDyn

CytoDyn is a late-stage biotechnology company developing innovative treatments for multiple therapeutic indications using leronlimab, a novel humanized monoclonal antibody targeting the CCR5 receptor. CCR5 plays a critical role in the ability of HIV to enter and infect healthy T-cells and appears to be implicated in tumor metastasis and immune-mediated illnesses, such as NASH.

CytoDyn successfully completed a Phase 3 pivotal trial using leronlimab combined with standard antiretroviral therapies in HIV-infected patients who were heavily treatment-experienced individuals with limited treatment options. CytoDyn is working diligently to resubmit its BLA for this HIV combination therapy since receiving a Refusal to File in July 2020. In July 2021, CytoDyn announced that it had submitted a dose justification report to the FDA, an integral step in the resubmission process for its BLA, which it expects to complete during the first quarter of calendar 2022. CytoDyn also completed a Phase 2b/3 investigative trial with leronlimab used as a once-weekly monotherapy for HIV-infected patients. CytoDyn plans to initiate a registration-directed study of leronlimab monotherapy indication. If successful, it could support a label expansion approval. Clinical results to date from two trials have shown that leronlimab can maintain a suppressed viral load in a sub-population of R5 HIV patients who chose to switch from their daily pills regimen to once-a-week subcutaneous dose of leronlimab. Several patients on leronlimab’s Phase 2b extension arm have remained virally suppressed for almost 7 years and many patients in our Phase 2b/3 investigative trial are passing two and some four years of monotherapy with suppressed viral load.