A Randomized Phase 2 Trial to Evaluate the Efficacy of BCL-2 Inhibitor Therapy With Chemotherapy Compared to Chemotherapy Alone in Adult Patients With Newly Diagnosed T-Cell ALL and T-Cell Lymphoblastic Lymphoma

This phase II trial tests the safety and effectiveness of giving chemotherapy with or without venetoclax and/or navitoclax for the treatment of patients with newly diagnosed T-cell acute lymphoblastic leukemia (T-ALL) or T-cell lymphoblastic lymphoma (T-LBL). Chemotherapy drugs work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Venetoclax and navitoclax are in a class of medications called B-cell lymphoma-2 (BCL-2) inhibitors. They may stop the growth of cancer cells by blocking Bcl-2, a protein needed for cancer cell survival. Giving chemotherapy with or without venetoclax and/or navitoclax may be effective treatments for patients with newly diagnosed T-ALL or T-LBL.

Start Date09 Aug 2024

Sponsor / Collaborator

National Cancer Institute

100 Clinical Results associated with Bcl-xl x Bcl-2 x Bcl-w

100 Translational Medicine associated with Bcl-xl x Bcl-2 x Bcl-w

0 Patents (Medical) associated with Bcl-xl x Bcl-2 x Bcl-w

279

Literatures (Medical) associated with Bcl-xl x Bcl-2 x Bcl-w

01 Dec 2024·Oral Oncology

Comprehensive functional evaluation of head and neck squamous cell carcinoma with BH3-profiling demonstrates apoptotic competency and therapeutic efficacy of BH3-mimetics

Article

Author: Thomas, Carlos ; Guha, Chandan ; Gavathiotis, Evripidis ; Mehta, Vikas ; Augustine, Stelby ; Schlecht, Nicolas F. ; Ow, Thomas J ; Segall, Jeff ; Ow, Thomas J. ; Shrivastava, Nitisha ; Lopez, Andrea ; Prystowsky, Michael B. ; Smith, Richard V. ; Smith, Richard V ; Chan, Wesley ; Schiff, Bradley A. ; Li, Daniel ; Rosenblatt, Gregory ; Schiff, Bradley A ; Schlecht, Nicolas F ; Prystowsky, Michael B ; Burk, Robert

Evasion of apoptosis promotes tumor survival and contributes to resistance to cancer therapeutics in head and neck squamous cell carcinoma (HNSCC). Our recent work has demonstrated that HNSCC's highly express pro-survival anti-apoptotic proteins Bcl-xL and Mcl-1. Nevertheless, the mechanism of HNSCC to evade apoptosis is still not well understood. We used BH3 profiling, a functional assay which measures mitochondrial depolarization in response to the introduction of BH3 peptides, to evaluate apoptosis competency and dependency upon BCL-2 family anti-apoptotic proteins in a panel of immortalized and patient-derived HNSCC lines. We assessed response to BH3 mimetics including ABT-263 (navitoclax), an inhibitor of Bcl-2/Bcl-xL/Bcl-w, and S63845, an inhibitor of Mcl-1, both as single agents and in combination. We demonstrate that apoptosis signaling appears to be intact in the majority of HNSCC cells, and they are co-dependent upon Bcl-xL and Mcl-1 for survival. We found the combination to be highly synergistic in 2D culture and in 3D organoid models of HHNSCC. Given our findings that co-dependency on Bcl-xL and Mcl-1 is common, and co-inhibition of these molecules is synergistic for growth suppression in HNSCC cells, these results elucidate the therapeutic potential of BCL-xL and MCL-1 inhibition in HNSCC.

11 Jun 2024·ACS Omega

Delineating the Antiapoptotic Property of Apigenin as an Antitumor Agent: A Computational and In Vitro Study on HeLa Cells

Article

Author: Hussain, Arif ; Khorami, Sherareh ; Vohra, Huzefa ; Bhagavatula, Deepika ; Hasan, Tarique Noorul

Apigenin, a flavonoid, is reported to have multiple health benefits including cancer prevention; this study evaluates the drug likeliness and Swiss ADME properties of apigenin. Apoptosis, which is a key hallmark of cancer, is associated with the deregulation of the balance between proapoptotic proteins and antiapoptotic proteins such as BCL-2,BCL-xl, BFL-1, BCL-w, BRAG-16, and MCL-1. The docking studies of apigenin with the mentioned proteins was performed to identify the interactions between the ligand and proteins, which suggested that apigenin was able to bind to most of the proteins similar to the inhibitory molecules of its native structure. A remarkable reduction in the total energy after energy minimization of apigenin-antiapoptotic protein complexes suggested increased stability of the docked complexes. The same complexes were found to be stable over a 10 ns period of molecular simulation at 300 K. These findings advocated the study to evaluate apigenin's potential to inhibit the HeLa cells at 5, 10, and 15 μM concentrations in the clonogenic assay. Apigenin inhibited the colony-forming ability of HeLa cells in a dose-dependent manner over a fortnight. Light microscopy of the treated cells displayed the morphological evidence characteristic of apoptosis in HeLa cells such as blebbing, spike formation, cytoplasmic oozing, and nuclear fragmentation. Thus, these results clearly indicate that apigenin may be used as a potential chemopreventive agent in cervical cancer management.

01 Sep 2023·Oncogene

BCL-W makes only minor contributions to MYC-driven lymphoma development.

Article

Author: La Marca, John E ; Young, Savannah ; Strasser, Andreas ; Diepstraten, Sarah T ; Chang, Catherine ; Kelly, Gemma L

The BH3-mimetic drug Venetoclax, a specific inhibitor of anti-apoptotic BCL-2, has had clinical success for the treatment of chronic lymphocytic leukaemia and acute myeloid leukaemia. Attention has now shifted towards related pro-survival BCL-2 family members, hypothesising that new BH3-mimetic drugs targeting these proteins may emulate the success of Venetoclax. BH3-mimetics targeting pro-survival MCL-1 or BCL-XL have entered clinical trials, but managing on-target toxicities is challenging. While increasing evidence suggests BFL-1/A1 is a resistance factor for diverse chemotherapeutic agents and BH3-mimetic drugs in haematological malignancies, few studies have explored the role of BCL-W in the development, expansion, and therapeutic responses of cancer. Previously, we found that BCL-W was not required for the ongoing survival and growth of various established human Burkitt lymphoma and diffuse large B cell lymphoma cell lines. However, questions remained about whether BCL-W impacts lymphoma development. Here, we show that BCL-W appears dispensable for MYC-driven lymphomagenesis, and such tumours arising in the absence of BCL-W show no compensatory changes to BCL-2 family member expression, nor altered sensitivity to BH3-mimetic drugs. These results demonstrate that BCL-W does not play a major role in the development of MYC-driven lymphoma or the responses of these tumours to anti-cancer agents.

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