On October 13, 2022 Cyclacel Pharmaceuticals, Inc. (NASDAQ: CYCC, NASDAQ: CYCCP; "Cyclacel" or the "Company"), a biopharmaceutical company developing innovative medicines based on cancer cell biology, reported it will present preliminary dose escalation data from its ongoing 065-101 Phase 1/2 clinical trial of oral fadraciclib for the treatment of patients with advanced solid tumors and lymphoma during a poster presentation at the upcoming 34th EORTC-NCI-AACR (Free EORTC-NCI-AACR Whitepaper) (ENA) Symposium on Molecular Targets and Cancer Therapeutics, which is being held on October 26-28th, 2022, in Barcelona, Spain (Press release, Cyclacel, OCT 13, 2022, View Source [SID1234621997]).
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Details of the presentation are provided below:
Title: A Phase 1/2, Open-label, Multi-center Study to Investigate the Safety, Pharmacokinetics, and Efficacy of Fadraciclib (CYC065), an Oral CDK2/9 Inhibitor, in Subjects with Advanced Solid Tumors and Lymphoma
Abstract No: 50
Session Topic: Molecular Targeted Agents 1
Date and Time: Wednesday, October 26, 2022, 12:00 – 20:00 CEST
Location: Exhibition Hall
About Cyclin-Dependent Kinases and Fadraciclib
Cyclin-dependent kinases (CDKs) are critical for cell cycle control and transcriptional regulation. Dysregulated CDKs have been linked to the cancer hallmarks of uncontrolled proliferation and increased cancer cell survival. Fadraciclib, a next generation CDK inhibitor, is a highly selective, potent, orally and intravenously available, inhibitor of CDK2 and CDK9. CDK2 drives cell cycle transitions and CDK9 regulates transcription of genes through phosphorylation of the carboxy-terminal domain (CTD) of RNA polymerase II (RNAP II). By inhibiting CDK2 and CDK9 fadraciclib causes apoptotic death of cancer cells at sub-micromolar concentrations. Fadraciclib is being tested in a Phase 1/2 trial for the treatment of advanced solid tumors and lymphoma (065-101; NCT#04983810) and a Phase 1/2 trial for the treatment of hematological malignancies (065-102; NCT#05168904).
Preclinical data suggest that fadraciclib may benefit patients with certain cyclin E-addicted or MYC-amplified solid tumors, including certain forms of breast cancer, neuroblastoma, ovarian cancer, uterine serous carcinoma and adult and pediatric hematological malignancies, such as ALL, AML, B-cell lymphoma, CLL, and multiple myeloma. Similarly to FDA-approved CDK4/6 inhibitors, fadraciclib may be useful in combination with other anticancer drugs, including HER2 inhibitors, such as trastuzumab, or BCL2 inhibitors, such as venetoclax.
In a prior Phase 1 open-label trial (CYC065-01), patients with high copy CCNE (cyclin E), MYC or MCL1 showed sensitivity to intravenously administered, single-agent fadraciclib. A heavily pretreated patient with MCL1 amplified endometrial cancer achieved a radiographically confirmed partial response (PR) after a month and a half on fadraciclib, subsequently achieved CR and continues on treatment with fadraciclib for over three years. An additional patient with cyclin E amplified ovarian cancer achieved stable disease with 29% shrinkage in her target tumor lesions.