Spiro Rombotis
Analyst · Ladenburg Thalmann
Thank you, Grace, and thank you, everyone, for joining us today for our fourth quarter and full year 2023 business update. We are delighted to be joined on today's call by Dr. Brian Schwartz, who has recently joined Cyclacel as Chief medical officer. Many of you may know Brian when he was CMO at ArQule prior to the acquisition by Merck in 2020, at which time he joined our Board of Directors. He has extensive clinical and product development experience, which will be instrumental in guiding our team to deliver key value inflection milestones. We are pleased to report on the progress of fadraciclib, our CDK2/9 inhibitor, or fadra for short. Having recently discovered a potential precision medicine approach for fadra, we have determined the recommended Phase 2 dose, or RP2D, and are ready to start the Phase 2 proof-of-concept part of our 065-101 study. Taken together, our clinical and preclinical data suggest a hypothesis that patients with one or more chromosomal abnormalities, including CDKN2A, CDKN2B, and/or MTAP, including deep deletions or loss of function, may be sensitive to fadra. In this part, we will evaluate patient cohorts selected for their mutation or profile and/or Phase 1 activity in very solid tumors and lymphoma. We will initially focus on two patient cohorts with CDKN2A and/or CDKN2B abnormalities and T-cell lymphoma, for both of which we saw Phase 1 signals of activity including responses. We believe that there is great unmet medical need and industry interest in the cancer patient populations identified by these abnormalities, which are closely located on chromosome 9 and are often co-deleted. CDKN2A gene deletions occur in several solid tumors, including bladder, breast, endometrial, esophageal, glioma, head and neck, hepatobiliary, lung, including squamous, melanoma, ovarian, pancreatic, and also in certain T-cell lymphomas. CDKN2B deletions occur in several solid tumors, including bladder, breast, cholangiocarcinoma, endometrial, esophageal, glioma, head and neck, hepatobiliary, lung, including squamous and mesothelioma, melanoma, pancreatic, and others. As mentioned in our press release, we expect two key data readouts for fadra this year. Final data from the dose escalation part of the 065-101 study at a major medical conference, and later on, initial clinical activity from the Phase 2 proof-of-concept part. Also, at the upcoming AACR 2024 meeting, independent investigators will present the clinical proof of concept data for fadra in various tumor types. I will now turn the call over to Brian to review our progress in the fadra and plogo studies and discuss some of our clinical results. Brian?