CytoDyn to Prepare a Phase 3 Protocol to Submit to the FDA for a Three-Arm Comparative and Combination Trial of Leronlimab and Remdesivir
BY GlobeNewswire
— 6:00 AM ET 05/18/2020
Three arms of this trial will be leronlimab, remdesivir, and leronlimab + remdesivir
VANCOUVER, Washington, May 18, 2020 (GLOBE NEWSWIRE) -- CytoDyn Inc.
“CytoDyn” or the “Company”), a late-stage biotechnology company developing leronlimab (PRO 140), a CCR5 antagonist with the potential for multiple therapeutic indications, today announced it will be submitting a protocol to the U.S. Food and Drug Administration (FDA) for a factorial design trial to compare effectiveness of leronlimab versus remdesivir and in combination with remdesivir for the treatment of COVID-19.
Leronlimab was administered to more than sixty patients with COVID-19 under emergency Investigational New Drug (eINDs) authorizations granted by the FDA. Preliminary results from this patient population led to CytoDyn’s Phase 2b/3 clinical trial for 390 patients, which is randomized, placebo-controlled with 2:1 ratio (active drug to placebo ratio). has also been granted a Phase 2 randomized clinical trial study in the U.S. for a Phase 2 randomized clinical trial for mild-to-moderate COVID-19 population in the U.S. CytoDyn plans to update the public regarding current eIND results later this week.
“We believe the randomized head-to-head comparison of leronlimab to remdesivir and in combination will provide answers to the lingering question regarding effective treatment options for patients suffering from COVID-19. We look forward to working both in the United States and with potential international sites to help provide effective treatment options for COVID-19,” said Jacob Lalezari, M.D., Chief Science Officer of CytoDyn.
“Unfortunately, COVID-19 remains a global public health challenge, and its economic impact continues to devastate the world economy. With a second wave of potential cases threatening to surface in the fall and winter of 2020, it is more important than ever to be sure successful treatment options are available to protect the lives of patients. CytoDyn ( CYDY
Loading... Loading...
) has assurance from its manufacturer that it will have available over 1 million vials this year and could ramp up production to 2-3 million vials this year alone,” said, Nader Pourhassan, Ph.D., President and Chief Executive Officer of CytoDyn ( CYDY ).
About Coronavirus Disease 2019
CytoDyn ( CYDY
Loading... Loading...
) is currently enrolling patients in two clinical trials for COVID-19, a Phase 2 randomized clinical trial for mild-to-moderate COVID-19 population in the U.S. and a Phase 2b/3 randomized clinical trial for severe and critically ill COVID-19 population in several hospitals throughout the country.
SARS-CoV-2 was identified as the cause of an outbreak of respiratory illness first detected in Wuhan, China. The origin of SARS-CoV-2 causing the COVID-19 disease is uncertain, and the virus is highly contagious. COVID-19 typically transmits person to person through respiratory droplets, commonly resulting from coughing, sneezing, and close personal contact. Coronaviruses are a large family of viruses, some causing illness in people and others that circulate among animals. For confirmed COVID-19 infections, symptoms have included fever, cough, and shortness of breath. The symptoms of COVID-19 may appear in as few as two days or as long as 14 days after exposure. Clinical manifestations in patients have ranged from non-existent to severe and fatal. At this time, there are minimal treatment options for COVID-19.
About Leronlimab (PRO 140) and BLA Submission for the HIV Combination Therapy
The FDA has granted a “Fast Track” designation to CytoDyn ( CYDY
Loading... Loading...
) for two potential indications of leronlimab for deadly diseases. The first as a combination therapy with HAART for HIV-infected patients and the second is for metastatic triple-negative breast cancer. Leronlimab is an investigational humanized IgG4 mAb that blocks CCR5, a cellular receptor that is important in HIV infection, tumor metastases, and other diseases, including NASH. Leronlimab has completed nine clinical trials in over 800 people, including meeting its primary endpoints in a pivotal Phase 3 trial (leronlimab in combination with standard antiretroviral therapies in HIV-infected treatment-experienced patients).
In the setting of HIV/AIDS, leronlimab is a viral-entry inhibitor; it masks CCR5, thus protecting healthy T cells from viral infection by blocking the predominant HIV (R5) subtype from entering those cells. Leronlimab has been the subject of nine clinical trials, each of which demonstrated that leronlimab could significantly reduce or control HIV viral load in humans. The leronlimab antibody appears to be a powerful antiviral agent leading to potentially fewer side effects and less frequent dosing requirements compared with daily drug therapies currently in use.
The Company filed its BLA for Leronlimab as a Combination Therapy for Highly Treatment Experienced HIV Patients with the FDA on April 27, 2020, and submitted additional FDA requested clinical datasets on May 11, 2020. After the BLA submission is deemed completed, the FDA sets a PDUFA goal date. CytoDyn ( CYDY
Loading... Loading...
) has Fast Track designation for leronlimab and a rolling review for its BLA, as previously assigned by the FDA, and the Company plans to request a priority review for the BLA. A priority review designation means the FDA’s goal is to take action on the marketing application within six months of receipt (compared with 10 months under standard review).
In the setting of cancer, research has shown that CCR5 may play a role in tumor invasion, metastases, and tumor microenvironment control. Increased CCR5 expression is an indicator of disease status in several cancers. Published studies have shown that blocking CCR5 can reduce tumor metastases in laboratory and animal models of aggressive breast and prostate cancer. Leronlimab reduced human breast cancer metastasis by more than 98% in a murine xenograft model. CytoDyn ( CYDY
Loading... Loading...
) is, therefore, conducting a Phase 1b/2 human clinical trial in metastatic triple-negative breast cancer and was granted Fast Track designation in May 2019.
The CCR5 receptor appears to play a central role in modulating immune cell trafficking to sites of inflammation. It may be crucial in the development of acute graft-versus-host disease (GvHD) and other inflammatory conditions. Clinical studies by others further support the concept that blocking CCR5 using a chemical inhibitor can reduce the clinical impact of acute GvHD without significantly affecting the engraftment of transplanted bone marrow stem cells. CytoDyn ( CYDY
Loading... Loading...
) is currently conducting a Phase 2 clinical study with leronlimab to support further the concept that the CCR5 receptor on engrafted cells is critical for the development of acute GvHD, blocking the CCR5 receptor from recognizing specific immune signaling molecules is a viable approach to mitigating acute GvHD. The FDA has granted “orphan drug” designation to leronlimab for the prevention of GvHD.
News 
Market Data 
Discover 
