Greenwich LifeSciences provides update on FLAMINGO-01 open label HLA data

Greenwich LifeSciences (GLSI) announced an update on FLAMINGO-01 open label HLA data. Analysis of the open label data from FLAMINGO-01 has commenced and has been conducted in a manner that maintains the study blind. A preliminary review of FLAMINGO-01 HLA data in both the HLA-A*02 treated and placebo arms and the third open label arm with all other HLA types, shows that approximately 46% of all screened patients have at least one HLA-A*02 allele from either parent. The main purpose of the open label arm is to investigate the safety and efficacy of GLSI-100 vaccination in patients who do not have an HLA-A*02 allele. It is possible that the open label arm may be large enough to draw immune response and efficacy conclusions. As discussed below, the HLA type can be analyzed by race and ethnicity in those patients who self-reported such information. The design of the Phase III trial can be seen here. The trial is a prospective, randomized, double-blinded, multi-center study. The patient population is defined by major screening criteria and is stratified to balance the patient population between the treated and placebo arms of the trial. As currently designed, approximately 500 patients with the HLA-A*02 allele will be randomized to receive GLSI-100 or placebo control in the first two pivotal arms of the trial with a planned interim analysis. In addition, patients without the HLA-A*02 allele will be enrolled in the third open label arm where all patients will receive GLSI-100 and where all endpoints will be open label. This non-HLA-A*02 arm was recently expanded from 100 to 250 patients based on recommendation of the steering committee and review/approval by the FDA and EMA.