Boxer Capital

Century Therapeutics is a biotechnology company developing allogeneic cell therapies derived from induced pluripotent stem cells to treat cancer and related diseases. Its platform enables engineering of iPSCs into NK and T cells with master cell banks of modified cells that can be expanded and differentiated into standardized, off-the-shelf therapies. The company combines CRISPR-mediated gene editing, proprietary chimeric antigen receptors, Allo-Evasion technology, and manufacturing capabilities to enable scalable production of homogeneous cell products for hematologic and solid tumors. While focused on oncology, its platform also targets autoimmune and inflammatory diseases with the goal of improving cell therapy performance and reducing host immune rejection.

Alterome Therapeutics is a precision oncology biotechnology company focused on developing alteration-specific therapeutics to target high-value, validated oncogenic drivers. It employs structure-guided drug discovery and advanced computational chemistry to create small-molecule therapies that selectively address oncogenic alterations, with the aim of improving patient outcomes in cancer.

Avidity Biosciences is a biopharmaceutical company developing antibody oligonucleotide conjugates to enable tissue-selective delivery and precision RNA therapies for serious diseases. Its AOC platform combines monoclonal antibody tissue targeting with oligonucleotide therapies to access previously undruggable tissues and genetic drivers. The lead candidate, AOC 1001, targets myotonic dystrophy type 1, and its muscle programs address muscle atrophy, Duchenne muscular dystrophy, facioscapulohumeral muscular dystrophy, and Pompe disease. The pipeline also includes immune and other cell-type programs, including Del-zota for DMD, Del-desiran for DM1, and Del-brax for FSHD. Avidity is based in La Jolla, California.

Jasper Therapeutics, Inc. is a clinical-stage biotechnology company based in Menlo Park, California, that specializes in developing therapeutic agents for hematopoietic stem cell transplants and gene therapies. Founded in 2018, the company aims to enhance the safety and efficacy of conditioning agents to broaden the application of curative therapies. Jasper's lead product, JSP191, is a humanized monoclonal antibody currently in clinical development, designed to act as a conditioning agent by selectively clearing hematopoietic stem cells from bone marrow in patients undergoing stem cell transplants. The company also utilizes an engineered hematopoietic stem cells platform to address the limitations of transplant grafts, thereby increasing the accessibility of both allogeneic and autologous gene-edited hematopoietic stem cell therapies for a larger patient population.

Alterome Therapeutics is a precision oncology biotechnology company focused on developing alteration-specific therapeutics to target high-value, validated oncogenic drivers. It employs structure-guided drug discovery and advanced computational chemistry to create small-molecule therapies that selectively address oncogenic alterations, with the aim of improving patient outcomes in cancer.

SpringWorks Therapeutics is a clinical-stage biopharmaceutical company applying precision medicine to develop medicines for severe rare diseases and cancer. It maintains a differentiated targeted oncology portfolio with lead candidates nirogacestat, a gamma secretase inhibitor, and mirdametinib, a MEK inhibitor, both in late-stage trials; the pipeline also includes BGB-3245, an oral inhibitor of activating BRAF mutations, in Phase I, and several combination programs. The company pursues collaborations with BeiGene, GlaxoSmithKline, and Allogene and has license agreements with Pfizer for nirogacestat and mirdametinib. Founded in 2017 and headquartered in Stamford, Connecticut, SpringWorks aims to advance potentially registrational studies in rare tumor types and genetically defined cancers through partnerships that expand its portfolio and patient access.

Ceptur Therapeutics is focused on developing innovative genetic medicines for patients with unmet medical needs. The company utilizes its proprietary U1 Adaptor technology to achieve non-genotoxic, long-lasting silencing of disease-causing genes, particularly in challenging tissues beyond the liver and central nervous system. This technology addresses the limitations of existing gene silencing methods and has potential applications in cancer treatment, allowing healthcare providers to offer new therapeutic options for various cancer types. Through its advancements, Ceptur aims to improve patient outcomes by providing effective solutions for difficult-to-treat conditions.

Alterome Therapeutics is a precision oncology biotechnology company focused on developing alteration-specific therapeutics to target high-value, validated oncogenic drivers. It employs structure-guided drug discovery and advanced computational chemistry to create small-molecule therapies that selectively address oncogenic alterations, with the aim of improving patient outcomes in cancer.

Flare Therapeutics is a biotechnology company that develops small-molecule medicines by targeting transcription factors. It focuses on identifying switch sites—druggable regions that regulate transcription factor activity—to address disease-causing mutations. Leveraging insights into transcription factor biology, Flare aims to translate this understanding into precision medicines, building an early pipeline that is initially focused on precision oncology with potential expansions into neurology, rare genetic disorders, immunology, and inflammation. The company combines a drug-discovery platform with a biology-led approach to discover therapies that alter the trajectory of diseases driven by transcription factor dysregulation.

Theseus Pharmaceuticals is a biopharmaceutical company dedicated to enhancing the lives of cancer patients through the development of targeted therapies. The company focuses on discovering and commercializing innovative treatments that specifically address drug resistance mutations in critical driver oncogenes, which are genes that, when mutated, contribute to cancer progression. By leveraging advanced technology, Theseus Pharmaceuticals aims to transform cancer care and improve patient outcomes.

Day One Biopharmaceuticals is a clinical-stage biotechnology company focused on developing targeted therapies for genetically defined cancers across all ages, with an initial emphasis on pediatric patients. The company aims to bring effective cancer treatments to families by advancing therapies that can benefit both children and adults, prioritizing programs that can progress to the market rapidly. Day One pursues licensing or acquisition of promising products from research institutions and industry partners to expand its pipeline. Its lead candidate, DAY101, is an oral, brain-penetrant, highly selective type II pan-RAF kinase inhibitor designed to target cancers driven by the RAF signaling pathway. By applying insights from childhood cancer biology, the company seeks to address unmet needs in oncology and broaden access to precision therapies.

Gemini Therapeutics, Inc. is a precision medicine company based in Cambridge, Massachusetts, founded in 2015. The company specializes in developing new therapies for patients experiencing dry age-related macular degeneration (AMD) and related rare genetic diseases. Gemini Therapeutics focuses on genetically defined conditions, creating therapeutic candidates that address molecular abnormalities in patients with significant clinical needs. Their diverse pipeline encompasses monoclonal antibodies, recombinant proteins, and gene therapies, positioning the company to potentially introduce first-in-class therapeutics. The development of these innovative treatment options is supported by collaborations with leading life science investors and academic institutions worldwide, reflecting a commitment to advancing medical care for individuals suffering from these conditions.

Shoreline Biosciences, Inc. is a biotechnology company based in La Jolla, California, founded in 2020. The company specializes in developing cell-based immunotherapies aimed at treating seriously ill patients. Shoreline's proprietary technology platform leverages advanced methods in induced pluripotent stem cell (iPSC) differentiation and genetic programming, specifically targeting the IL-15/CISH pathway. This approach enhances the metabolic fitness and persistence of engineered natural killer (NK) cells, improving their anti-cancer activity. Shoreline's focus includes creating clinically effective immunotherapies using iPSC-derived NK cells and macrophages, providing innovative and cost-effective treatment options for oncology and other serious health conditions.

Biomea Fusion is a precision medicine company focused on accelerating cancer drug development by targeting specific gene alterations that drive tumor growth. Its lead program aims to disrupt the protein-to-protein interaction between menin and the MLL complex for treating various tumors.

Solid Biosciences Inc. is a life science company focused on developing therapies for Duchenne muscular dystrophy (DMD), a genetic muscle-wasting disease primarily affecting boys. The company's lead product candidate, SGT-001, is a gene transfer therapy currently undergoing a Phase I/II clinical trial aimed at restoring functional dystrophin protein expression in patients' muscles. In addition to SGT-001, Solid Biosciences is advancing the Anti-LTBP4 program, which involves a monoclonal antibody designed to reduce fibrosis and inflammation by targeting the LTBP4 protein. The company also develops biomarkers and sensors, as well as the Solid Suit program, which focuses on creating wearable assistive devices with functional and therapeutic benefits. Founded in 2013 and headquartered in Cambridge, Massachusetts, Solid Biosciences has established a strategic collaboration with Ultragenyx to enhance gene therapy development for DMD. With no current cure for DMD, the company aims to provide innovative solutions for a condition that affects an estimated 10,000 to 15,000 cases in the United States.

Achilles Therapeutics Ltd. is a biopharmaceutical company based in London, United Kingdom, specializing in the development of patient-specific immunotherapies designed to combat cancer. Founded in 2016, the company focuses on personalized vaccines and T cell therapies that utilize the body's immune system to target and eliminate cancer cells. Achilles Therapeutics aims to identify and target truncal tumor neoantigens and other markers present on cancer cells, allowing for precise attacks on tumors while sparing healthy tissue. The company is currently conducting clinical trials, including the CHIRON trial for non-small-cell lung cancer and the THETIS trial for recurrent or metastatic melanoma, to evaluate the efficacy and safety of its innovative therapies.

Elevation Oncology develops precision medicines for genomically defined cancers. Its lead candidate, seribantumab, inhibits tumor growth driven by NRG1 fusions, currently in Phase 2 trials.

Rain Oncology Inc. is a late-stage precision oncology company focused on developing targeted therapies aimed at oncogenic drivers. The company employs a genetic selection strategy to identify patients who are most likely to benefit from its treatments, utilizing a tumor-agnostic approach that prioritizes the underlying genetics of tumors over traditional histological classifications. Its lead product candidate, milademetan, is a small molecule oral inhibitor of MDM2, which plays a role in various cancers. Additionally, Rain Oncology is advancing a preclinical program aimed at inducing synthetic lethality in cancer cells by inhibiting RAD52, further diversifying its therapeutic pipeline.

Tango Therapeutics is a biotechnology company focused on developing cancer therapies based on the genetic principle of synthetic lethality. It aims to counteract tumor suppressor gene loss, reverse immune evasion in cancer cells, and identify effective drug combinations.

Tango Therapeutics is a biotechnology company focused on developing cancer therapies based on the genetic principle of synthetic lethality. It aims to counteract tumor suppressor gene loss, reverse immune evasion in cancer cells, and identify effective drug combinations.

Nurix Therapeutics is a biopharmaceutical company focused on discovering, developing, and commercializing oral small-molecule therapies that modulate cellular protein levels to treat cancer and immune disorders. It operates DELigase, an integrated discovery platform that targets E3 ligases to alter protein abundance within cells. The company's product pipeline includes targeted protein degraders such as NX-2127, an oral Bruton's tyrosine kinase degrader for relapsed or refractory B-cell malignancies, and NX-1607, an oral Casitas B-lineage lymphoma proto-oncogene-B inhibitor for immuno-oncology indications; these are in preclinical stages. Nurix also explores inhibitors of CBL-B, an E3 ligase that regulates T cell activation. The company collaborates with major industry partners, including Gilead Sciences and Sanofi, and was founded in 2009 and is headquartered in San Francisco.

Boundless Bio develops innovative cancer therapeutics focused on understanding and treating previously untreatable cancers. It specializes in targeting extrachromosomal DNA (ecDNA) biology, a key driver of aggressive cancers.

Passage Bio is a gene therapy company dedicated to developing transformative treatments for rare, monogenic central nervous system disorders. It has an integrated pipeline of five AAV-delivered therapeutics and collaborates with the University of Pennsylvania's Gene Therapy Program for preclinical work.

Solid Biosciences Inc. is a life science company focused on developing therapies for Duchenne muscular dystrophy (DMD), a genetic muscle-wasting disease primarily affecting boys. The company's lead product candidate, SGT-001, is a gene transfer therapy currently undergoing a Phase I/II clinical trial aimed at restoring functional dystrophin protein expression in patients' muscles. In addition to SGT-001, Solid Biosciences is advancing the Anti-LTBP4 program, which involves a monoclonal antibody designed to reduce fibrosis and inflammation by targeting the LTBP4 protein. The company also develops biomarkers and sensors, as well as the Solid Suit program, which focuses on creating wearable assistive devices with functional and therapeutic benefits. Founded in 2013 and headquartered in Cambridge, Massachusetts, Solid Biosciences has established a strategic collaboration with Ultragenyx to enhance gene therapy development for DMD. With no current cure for DMD, the company aims to provide innovative solutions for a condition that affects an estimated 10,000 to 15,000 cases in the United States.

Encoded Therapeutics is a biotechnology company focused on precision gene therapies to treat a broad range of severe genetic disorders. It develops therapies and a platform that identifies human genome sequences that regulate gene expression using screening and computational approaches. The company's pipeline targets conditions across multiple pathways, including neurocircuitry, liver and metabolic disorders, neurodegeneration, and cardiovascular disease, aiming to help medical practitioners treat patients and improve outcomes. Based in South San Francisco, California, Encoded Therapeutics was founded in 2014 and was previously known as Encoded Genomics.

Poseida Therapeutics, Inc. is a clinical-stage biopharmaceutical company based in San Diego, California, dedicated to developing innovative therapeutics for patients with significant unmet medical needs. The company specializes in genome engineering technologies and is focused on creating targeted treatments, including a pipeline of autologous and allogeneic chimeric antigen receptor T cell (CAR-T) therapies aimed at addressing hematological malignancies and solid tumors. Additionally, Poseida is advancing gene therapies for rare and life-threatening diseases, such as Ornithine transcarbamylase deficiency and methylmalonic acidemia, along with therapies for genetic liver diseases. Founded in 2014, Poseida Therapeutics is committed to improving patient outcomes through its cutting-edge research and development efforts.

SpringWorks Therapeutics is a clinical-stage biopharmaceutical company applying precision medicine to develop medicines for severe rare diseases and cancer. It maintains a differentiated targeted oncology portfolio with lead candidates nirogacestat, a gamma secretase inhibitor, and mirdametinib, a MEK inhibitor, both in late-stage trials; the pipeline also includes BGB-3245, an oral inhibitor of activating BRAF mutations, in Phase I, and several combination programs. The company pursues collaborations with BeiGene, GlaxoSmithKline, and Allogene and has license agreements with Pfizer for nirogacestat and mirdametinib. Founded in 2017 and headquartered in Stamford, Connecticut, SpringWorks aims to advance potentially registrational studies in rare tumor types and genetically defined cancers through partnerships that expand its portfolio and patient access.

IDEAYA Biosciences is an oncology-focused biotechnology company dedicated to discovering targeted therapeutics for patient populations selected using molecular diagnostics. Its pipeline includes small molecule inhibitors targeting DNA damage and repair pathways, such as MAT2A, PARG, and Pol-theta, as well as immuno-oncology therapies targeting the tumor microenvironment.