Puma Biotechnology, Inc. | March 16, 2023
Puma Biotechnology, Inc., a biopharmaceutical company, recently announced the online publication of the Phase II TBCRC041 randomized clinical trial results in JAMA Oncology. The trial investigated the use of alisertib, an adenosine triphosphate–competitive and reversible inhibitor of aurora kinase A, alone or in combination with fulvestrant in postmenopausal women with endocrine-resistant, HER2-negative metastatic breast cancer who were previously treated with fulvestrant.
The Phase II randomized clinical trial was conducted via the Translational Breast Cancer Research Consortium and included patients previously treated with CDK 4/6 inhibitors and everolimus.
The trial enrolled 91 evaluable patients, with baseline characteristics balanced between the two arms of the trial. However, more patients in the alisertib plus fulvestrant arm had previously received chemotherapy for metastatic disease (47.8% in the alisertib alone arm vs. 68.9% in the alisertib plus fulvestrant arm). In each arm of the trial, all patients had earlier been treated with CDK 4/6 inhibitors. Everolimus was previously administered to 37% of patients in the alisertib alone arm and 57.8% in the alisertib plus fulvestrant arm.
The trial's efficacy results indicated that nine partial responses were observed in the 46 evaluable patients in the alisertib alone arm, leading to an overall response rate of 19.6%. The median duration of response was 15.1 months, with a clinical benefit rate of 41.3% at 24 weeks. The projected median progression-free survival (PFS) was 5.6 months. Nine of the 45 evaluable patients in the alisertib plus fulvestrant arm of the study responded, for an overall response rate of 20.0%. There was one patient who had a complete response and eight patients who showed partial responses. The median duration of response was 8.5 months, with a clinical benefit rate of 28.9% at 24 weeks. The median PFS was expected to be 5.4 months.
The most prevalent grade 3 or higher adverse events in the alisertib alone arm of the trial were neutropenia (43.4%), anemia (19.6%) and leukopenia (17.4%). The most prevalent grade 3 or higher adverse events in the alisertib plus fulvestrant arm of the study were neutropenia (42.2%), leukopenia (31.1%), lymphopenia (15.6%), fatigue (11.1%), and anemia (8.9%).
About Puma Biotechnology, Inc.
Puma Biotechnology, Inc. is a leading biopharmaceutical company specializing in the development and commercialization of innovative treatments for cancer. Its flagship product is Nerlynx (neratinib), an oral tyrosine kinase inhibitor approved by the USFDA for the extended adjuvant treatment of HER2-positive early-stage breast cancer. In addition to Nerlynx, it has a robust pipeline of product candidates in various stages of development. The company is firmly committed to research and development and collaborates with leading academic institutions and research organizations to advance the understanding of cancer and develop new therapies.
INDUSTRIAL IMPACT, MEDICAL
Twist Bioscience | March 10, 2023
On March 9, 2023, Twist Bioscience Corporation, a leading firm providing high-quality synthetic DNA through its silicon platform, announced the launch of integrated antibody discovery services. This premium offering combines the company's synthetic libraries and AI machine learning with an in vivo immunization approach acquired through its acquisition of Abveris, also known as Twist Boston. This service provides customers with optimized, development-ready antibody candidates.
The combined team, now called Twist Biopharma Solutions, is led by Tracey Mullen, MBA, the senior vice president of biopharma for Twist Bioscience. This newly formed entity leverages years of industry expertise, scientific excellence, and proprietary technology to discover the best antibody candidate for therapeutic targets of interest.
Twist Biopharma Solutions offers an end-to-end workflow for centralized antibody discovery and optimization, including target validation, hit generation, lead selection, lead optimization, and lead characterization. Twist, supported by high-throughput DNA synthesis and IgG antibody production, constructs extensive and particular synthetic antibody libraries with discovery starting with either in vivo or in vitro diversity.
The newly integrated in vivo discovery approach from Abveris of single B cell screening and hybridoma discovery enables parallel paths where multiple technology methods can be leveraged to build a panel of highly diverse antibody leads with broad epitope coverage. In addition, this multi-pronged approach can increase the likelihood of discovering highly specific, high-affinity functional antibodies by sampling synthetic and natural diversity.
The South San Francisco and Boston biopharma teams were combined to create Twist Biopharma Solutions, led by Tracey Mullen. Aaron Sato, Ph.D., remains integrally involved in Twist Biopharma Solutions and, as a chief scientific officer of Twist Bioscience, extends his expertise across the organization. Tracey Mullen joined Twist Bioscience in November 2021 through the acquisition of Abveris. In April 2022, she took on the position of senior vice president of operations, driving the completion of the Factory of the Future in Wilsonville, Oregon, which began shipping products in January 2023. Before joining Twist, she served as CEO of Abveris and worked on the antibody discovery team at Biogen.
About Twist Bioscience
Twist Bioscience is a leading biotechnology company specializing in synthetic biology and genomics. It has developed a proprietary DNA synthesis platform that enables the production of custom-designed DNA strands faster, more accurately, and at a lower cost than traditional methods. In addition, Twist collaborates with partners across industries to develop customized DNA sequences for specific applications and offers a range of other products and services, such as oligonucleotides, synthetic genes, and custom panels for next-generation sequencing. The company has also developed a library of over 100 billion synthetic antibodies, which can be used for diagnostic and therapeutic applications.
CELL AND GENE THERAPY, INDUSTRIAL IMPACT
Biocytogen | January 05, 2023
RenNano™, a fully human heavy-chain antibody platform developed by Biocytogen Pharmaceuticals Co., Ltd., has been launched officially. RenNano™ joins RenMab™ and RenLite® as the newest member of the RenMice™ family. All three RenMice™ technologies from Biocytogen work together to speed up the search and development of entirely human monoclonal, bispecific/multispecific, and single-domain antibodies (sdAbs, or nanobodies).
Camels and sharks produce heavy-chain-only antibodies (HCAb), indicating their variable domains (VHH or sdAb) are functional without pairing with the light chain. Still, humans and mice produce antibodies that require heavy and light chain coupling to be effective. Because of their molecular weight and size, sdAbs can enter solid tumor tissues and breach the blood-brain barrier. Additionally, the sdAb's larger CDR3 region allows for detecting the otherwise concealed epitopes of GPCRs and other challenging targets.
Nanobodies offer their benefits, but it's challenging to use animals that naturally make HCAbs, like camels, in large numbers to create monoclonal antibodies due to their size, slow reproduction rate, and limited offspring supply. However, humanizing camelid antibody sequences for pharmaceutical use adds another layer of complexity and time to the drug development process.
Accordingly, Biocytogen modified the constant area of the entirely human RenMab™ model to create the RenNano™ Mouse, which is genetically modified to manufacture HCAbs. RenNano™ Mouse is one of the world's most comprehensive human antibody platforms due to the substitution of the mouse genes with the complete human heavy chain variable genes.
Biocytogen, a global biotechnology company, is at the forefront of developing cutting-edge methods for studying and creating new antibody-based pharmaceuticals. Biocytogen has streamlined the entire drug development process by integrating its drug efficacy screening platforms and clinical solid development expertise with its proprietary RenMab™, RenLite®, and RenNano™ platforms for the fully human monoclonal antibody, bispecific/multispecific antibody, and nanobody develo