TCG Crossover Management

TCG Crossover Management is a venture capital investment firm founded in 2020 and based in Palo Alto, California. The firm specializes in investing in companies within the drug discovery and medicine sectors, focusing primarily on opportunities in the United States and Europe. TCG Crossover Management is dedicated to advancing innovative healthcare solutions and supporting entrepreneurs who are committed to developing improved treatment options for patients. As a Registered Investment Adviser, the firm operates with a strong emphasis on identifying and nurturing companies that have the potential to make significant advancements in healthcare.

Cariad Chester

Managing Partner

57 past transactions

Arbor Biotechnologies

Series C in 2025
Arbor Biotechnologies, Inc., founded in 2016 and headquartered in Cambridge, Massachusetts, operates as a bio-discovery company in the biotechnology sector. The company focuses on developing genomic tools that enhance human health and sustainability. Utilizing a combination of artificial intelligence, genome sequencing, gene synthesis, and high-throughput screening, Arbor's platform accelerates the discovery of proteins and facilitates human diagnostic development. The technology aggregates genomic sequence data through AI and machine learning, enabling drug developers to replace entire genes and precisely correct mutations. This approach aims to streamline the development of curative treatments for previously incurable genetic diseases, ultimately improving the lives of patients affected by such conditions.

Solid Biosciences

Post in 2025
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.

Aviceda Therapeutics

Series C in 2025
Aviceda Therapeutics is a late-stage, pre-clinical biotechnology company focused on developing innovative treatments for glyco-immune diseases. By leveraging glycobiology and a proprietary cell-based high-throughput screening platform, the company aims to create next-generation immunomodulators that target the innate immune system and address chronic non-resolving inflammation. Aviceda's product pipeline includes candidates for a variety of conditions, such as eye diseases, fibrosis, neurology, and oncology. Key products under development include AVD-104, AVD-302, and AVD-401 for dry eye, diabetic retinopathy, and retinoblastoma, as well as AVD-601, AVD-701, and AVD-801 targeting oncology, neurology, and fibrosis. Through its advanced technologies and biological insights, Aviceda seeks to provide breakthrough glycol-therapeutics that improve patient outcomes.

Rapt

Post in 2024
RAPT Therapeutics, Inc., established in 2015 and headquartered in South San Francisco, California, is a clinical-stage biopharmaceutical company specializing in immunology-based therapies. The company focuses on developing oral small molecule treatments for patients with unmet needs in oncology and inflammatory diseases. Its lead drug candidates are FLX475, an oral C-C motif chemokine receptor 4 antagonist in Phase 2 clinical trials for various cancer types, and RPT193, which selectively inhibits type 2 T helper cell migration into inflamed tissues. Additionally, RAPT is exploring other targets like general control nonderepressible 2 and hematopoietic progenitor kinase 1 in the discovery phase.

Adcendo

Series B in 2024
ADCendo ApS is a biotechnology company focused on developing innovative anti-cancer drugs through the use of antibody-drug conjugates (ADCs). The company targets novel receptors that are overexpressed in various cancer types, addressing significant unmet medical needs in the field of oncology. Its ADCs aim to provide targeted therapy for patients suffering from aggressive cancers such as soft-tissue sarcoma, osteosarcoma, glioblastoma multiforme, and triple-negative breast cancer, as well as other carcinomas including those of the breast, colon, pancreas, prostate, ovary, and kidney. Through its research and development efforts, ADCendo strives to create effective treatment options for patients facing challenging cancer diagnoses.

Cidara Therapeutics

Post in 2024
Cidara Therapeutics is a biotechnology company based in San Diego, California, established in 2012. The company specializes in the discovery and development of innovative anti-infective therapies for serious diseases, particularly those that affect individuals with compromised immune systems. Its lead candidate, rezafungin acetate, is an antifungal agent designed to treat and prevent severe invasive fungal infections, such as candidemia and invasive candidiasis, which carry significant mortality risks. In addition to its antifungal efforts, Cidara is advancing its proprietary Cloudbreak platform, which focuses on developing antiviral Fc-conjugates aimed at preventing and treating various viral infections, including influenza, RSV, HIV, and coronavirus. Cidara's mission is to transform treatment and prevention strategies for life-threatening illnesses.

ViceBio

Series B in 2024
ViceBio is a biopharmaceutical company focused on developing innovative vaccines to combat respiratory viral infectious diseases. Utilizing its patented Molecular Clamp Technology, ViceBio stabilizes viral glycoproteins in their prefusion conformation, which allows for the creation of effective and ready-to-use liquid vaccines. This technology enables long-term storage and easy administration of vaccines targeting various respiratory viruses, including respiratory syncytial virus (RSV), metapneumovirus, influenza, and SARS-CoV-2. Through its commitment to advancing vaccination strategies, ViceBio aims to prevent potentially fatal infections caused by these viruses.

Candid Therapeutics

Series A in 2024
Candid Therapeutics is a biotechnology company specializing in the development of innovative therapies for immunological disorders. The company's primary focus is on creating novel, user-friendly treatments for autoimmune diseases. Their core technology involves advanced T-cell engager antibodies, which precisely redirect T-cells to selectively eliminate autoreactive B-cells, aiming to deliver transformative efficacy and improved therapeutic outcomes for patients.

Pathalys Pharma

Series B in 2024
Pathalys Pharma is a clinical biopharmaceutical company focused on developing innovative therapeutics for late-stage chronic kidney disease. The company primarily aims to address the unmet medical need associated with secondary hyperparathyroidism (SHPT), a condition characterized by the overactivity of the parathyroid glands due to external diseases. Pathalys is developing upacicalcet, a novel calcimimetic designed to improve SHPT treatment in patients undergoing hemodialysis. Upacicalcet works by mimicking the action of calcium on tissues, activating the calcium-sensing receptor found in various human organs. This approach has the potential to enhance patient care for those suffering from end-stage chronic kidney disease.

Savara Pharmaceuticals

Post in 2024
Savara is an orphan lung disease company. Savara’s pipeline comprises Molgradex, an inhaled granulocyte-macrophage colony-stimulating factor, or GM-CSF, in Phase 3 development for autoimmune pulmonary alveolar proteinosis, or aPAP, in Phase 2a development for nontuberculous mycobacteria, or NTM, lung infection, and in preparation for Phase 2a development in cystic fibrosis, or CF, affected individuals with chronic NTM lung infection; and AeroVanc, a Phase 3 stage inhaled vancomycin for treatment of persistent methicillin resistant staphylococcus aureus, or MRSA, lung infection in CF. Savara’s strategy involves expanding its pipeline of potentially best-in-class products through indication expansion, strategic development partnerships and product acquisitions, with the goal of becoming a leading company in its field. The most recent acquisition is aerosolized amikacin/fosfomycin, a Phase 2 ready, proprietary combination antibiotic, which has demonstrated potent and broad-spectrum antibacterial activity against highly drug resistant pathogens. Savara’s management team has significant experience in orphan drug development and pulmonary medicine, identifying unmet needs, developing and acquiring new product candidates, and effectively advancing them to approvals and commercialization.

Disc Medicine

Post in 2024
Disc Medicine, Inc. is a clinical-stage biopharmaceutical company based in Cambridge, Massachusetts, focused on developing innovative treatments for severe hematologic disorders. Founded in 2017, the company specializes in human genetics-based therapeutics that aim to improve red blood cell production in patients suffering from various hematologic diseases. Disc Medicine's pipeline includes therapeutic candidates targeting critical pathways involved in red blood cell biology, such as heme biosynthesis and iron homeostasis. Notable programs include bitopertin, which is being developed for conditions like erythropoietic porphyrias and Diamond-Blackfan anemia. Through its research and development efforts, Disc Medicine seeks to transform the lives of patients affected by these challenging disorders.

Pheon Therapeutics

Series B in 2024
Pheon Therapeutics is a London-based company established in 2022, specializing in the development of Antibody-Drug Conjugates (ADCs) aimed at addressing a variety of difficult-to-treat cancers. The company focuses on creating next-generation ADCs, with its lead program targeting a novel antigen that is significantly expressed in solid tumors across multiple hard-to-treat cancer types. By enhancing the therapeutic options available to healthcare providers, Pheon Therapeutics aims to provide effective treatment alternatives for patients whose cancers do not respond to existing therapies.

Obsidian Therapeutics

Series C in 2024
Obsidian Therapeutics develops innovative cell and gene therapies aimed at enhancing adoptive immunotherapy for cancer patients. Founded in 2015 and based in Cambridge, Massachusetts, the company focuses on creating next-generation therapies that utilize pharmacologic operating systems to provide precise control over protein activity within cells. This technology allows for the development of adoptive cell therapies with advanced functionalities that can be managed by physicians using simple, safe, and orally active medications. By offering improved control over treatment, Obsidian Therapeutics aims to provide better outcomes for patients compared to existing cell therapy options.

Avalo Therapeutics

Post in 2024
Avalo Therapeutics is a clinical-stage biopharmaceutical company that focuses on developing highly targeted therapeutics for immune dysregulation and other areas of significant unmet clinical need. The company employs a precision medicine approach in its research and development efforts. Its lead asset, AVTX-009, is an anti-IL-1B monoclonal antibody designed to address inflammatory diseases. In addition to AVTX-009, Avalo's pipeline includes quisovalimab, an anti-LIGHT monoclonal antibody, and AVTX-008, a BTLA agonist fusion protein, which further exemplify its commitment to advancing innovative treatments for complex medical conditions.

Mirador Therapeutics

Series A in 2024
Mirador Therapeutics specializes in developing precision medicine technologies to tackle immune-mediated inflammatory and fibrotic diseases. The company's core offering is a proprietary data analytics engine that integrates comprehensive patient molecular profiles, pinpoints novel therapeutic targets, and facilitates the creation of targeted diagnostics. This enables researchers and healthcare providers to tailor treatments to individual patients' genetics, potentially enhancing outcomes for those with chronic conditions.

Ocular Therapeutix

Post in 2024
Ocular Therapeutix, Inc. is a biopharmaceutical company focused on developing and commercializing innovative therapies for eye diseases using its proprietary bioresorbable hydrogel platform technology. The company offers several products, including ReSure Sealant, a hydrogel ophthalmic wound sealant designed to protect corneal incisions after cataract surgery, and DEXTENZA, an ophthalmic insert for the treatment of post-surgical ocular pain and inflammation, as well as allergic conjunctivitis and dry eye diseases. Ocular Therapeutix is also developing OTX-TP, an insert aimed at reducing intraocular pressure in glaucoma patients, and OTX-TIC, an intracameral implant for similar indications, along with OTX-TKI, an intravitreal implant targeting wet age-related macular degeneration. In addition, the company has preclinical programs focused on various ocular conditions. Ocular Therapeutix collaborates with Regeneron Pharmaceuticals to integrate its hydrogel technology with Regeneron's VEGF-targeting compounds for retinal disease treatments. Founded in 2006, the company is headquartered in Bedford, Massachusetts.

Cogent Biosciences

Post in 2024
Cogent Biosciences is a biotechnology company dedicated to developing precision therapies for genetically defined diseases, aiming to treat the underlying causes and improve patient lives. The company employs proprietary T-cell engineering technology alongside tumor-targeting antibodies to harness the body's immune system against cancer. One of its key programs, CGT9486, is a selective tyrosine kinase inhibitor designed to inhibit specific mutations in KIT exon 17, which are associated with Systemic Mastocytosis and advanced gastrointestinal stromal tumors (GIST).

Mineralys Therapeutics

Post in 2024
Mineralys Therapeutics, Inc. is a clinical-stage biopharmaceutical company focused on developing innovative therapies for hypertension. The company is advancing its lead product candidate, MLS-101, a highly selective and potent aldosterone synthase inhibitor licensed from Mitsubishi Tanabe Pharma Corporation. Mineralys aims to provide a targeted treatment for patients with uncontrolled hypertension, particularly those who do not achieve adequate blood pressure control despite using multiple antihypertensive medications. By addressing the underlying factors associated with elevated aldosterone levels, Mineralys seeks to improve treatment outcomes for individuals suffering from this condition.

Adverum Biotechnologies

Post in 2024
Adverum Biotechnologies is a clinical-stage gene therapy company focused on developing innovative treatments for ocular and rare diseases. Headquartered in Redwood City, California, the company aims to establish gene therapy as a new standard of care, aspiring to provide functional cures that restore vision and prevent blindness. Its pipeline includes several product candidates, notably ADVM-022, which targets wet age-related macular degeneration through a single intravitreal injection designed to deliver long-term therapeutic effects. Other candidates include ADVM-043 for alpha-1 antitrypsin deficiency and ADVM-053 for hereditary angioedema. Adverum collaborates with partners like Editas Medicine and Regeneron Pharmaceuticals to leverage advanced AAV vectors and develop treatments for various inherited retinal diseases and ocular therapeutic targets. Founded in 2006, the company was previously known as Avalanche Biotechnologies and rebranded in 2016.

Silence Therapeutics

Post in 2024
Silence Therapeutics plc is a biotechnology company based in London, specializing in the discovery and development of innovative RNA therapeutics. The company focuses on utilizing short interfering RNA (siRNA) technology to modulate gene expression and address various medical conditions, including hematology, cardiovascular diseases, and rare metabolic disorders. Its pipeline includes several product candidates, such as SLN124, aimed at treating iron overload disorders by silencing the TMPRSS6 gene, and SLN360, which targets the LPA gene to reduce the risk of cardiovascular diseases. Silence Therapeutics has established strategic collaborations with major organizations, including AstraZeneca, to advance the development of siRNA therapeutics across multiple disease areas. The company leverages its proprietary genetic toolkit and delivery systems to optimize therapeutic outcomes, harnessing the body's natural biological mechanisms for effective treatment.

Astria Therapeutics

Post in 2024
Astria Therapeutics is a biopharmaceutical company based in Cambridge, Massachusetts, dedicated to developing innovative therapies for patients affected by rare allergic and immunological diseases. The company focuses on creating life-changing treatments, with its lead program, STAR-0215, being a monoclonal antibody designed to inhibit plasma kallikrein, currently in preclinical development for hereditary angioedema. Additionally, Astria is advancing STAR-0310, another monoclonal antibody, which targets the OX40 receptor and is also in preclinical development for atopic dermatitis, a condition characterized by impaired skin barrier function and significant itching. Through its targeted approach, Astria Therapeutics aims to address unmet medical needs in the field of immunology.

LB Pharmaceuticals

Series C in 2024
LB Pharmaceuticals Inc is a New York-based life sciences company focused on discovering and developing drugs for central nervous system disorders, particularly schizophrenia. Established in 2015, the company aims to commercialize novel and improved versions of existing CNS treatments that have not been developed or marketed in the United States. Its primary asset, LB-102 (n-Methyl amisulpride), is a patented reformulation of amisulpride, a drug recognized for its effectiveness in treating schizophrenia. By employing a pro-drug approach, LB Pharmaceuticals modifies the chemical structure of amisulpride to enhance its efficacy and safety, thereby offering improved treatment options for patients who do not respond well to current medications. The company is dedicated to generating innovative intellectual property and advancing its research-focused agenda in the pharmaceutical landscape.

Tourmaline Bio

Post in 2023
Tourmaline Bio is a clinical biotechnology company focused on developing transformative medicines aimed at improving the lives of patients suffering from immune diseases. The company is in the late stages of clinical development and is centered on its lead product candidate, TOUR006, a fully human monoclonal antibody designed to selectively target interleukin-6 (IL-6), a significant proinflammatory cytokine implicated in various autoimmune and inflammatory disorders. The IL-6 antibody class has a well-established history, with over two decades of clinical and commercial experience, having successfully treated more than a million patients with diverse autoimmune and inflammatory conditions. Through its innovative research, Tourmaline Bio seeks to address the unmet medical needs of patients affected by life-altering immune diseases.

VistaGen Therapeutics

Post in 2023
VistaGen Therapeutics, Inc. is a clinical-stage biopharmaceutical company focused on developing and commercializing innovative therapies for central nervous system disorders, particularly depressive and social anxiety disorders. The company's lead product candidate, AV-101, is an orally available treatment currently in Phase 2 development for major depressive disorder, targeting patients who have not adequately responded to standard antidepressants. Additionally, VistaGen is advancing PH94B, a neuroactive nasal spray, which is preparing for Phase III clinical trials for the acute treatment of anxiety in adults with social anxiety disorder. Another product in its pipeline, PH10, is being planned for Phase 2b development as a treatment for major depressive disorder. VistaGen has established licensing and collaboration agreements to facilitate the clinical development and commercialization of its products, including a strategic partnership for PH94B in Greater China, South Korea, and Southeast Asia. Founded in 1998, VistaGen is headquartered in South San Francisco, California.

Inhibrx

Post in 2023
Inhibrx, Inc. is a clinical-stage biotechnology company based in La Jolla, California, dedicated to developing a diverse pipeline of novel biologic therapeutic candidates. The company employs advanced protein engineering techniques, including its proprietary sdAb platform, to target complex disease biology, with a focus on oncology, orphan diseases, and infectious diseases. Inhibrx's lead candidates include INBRX-109, a multivalent agonist in Phase 1 trials for solid tumors; INBRX-105, an antagonist of PD-L1 also in Phase 1 trials; INBRX-101, an Fc-fusion protein for alpha-1 antitrypsin deficiency; and INBRX-103, a monoclonal antibody targeting CD47. Additionally, the company is developing preclinical programs such as INBRX-106, an agonist of OX40, and INBRX-111, an antibody targeting Pseudomonas aeruginosa. Inhibrx has established collaborations with organizations like Celgene and Bluebird Bio and has received funding from various granting agencies, including the NIH and CARB-X.

COMPASS Pathways

Post in 2023
COMPASS Pathways is a mental health care company based in Cheshire, United Kingdom, with operations in the United States. The company is focused on developing innovative therapies for treatment-resistant depression (TRD) using its proprietary psilocybin formulation, COMP360. Currently undergoing Phase IIb clinical trials, COMP360 aims to provide a new treatment option for patients who have not responded to traditional depression therapies. COMPASS Pathways emphasizes the combination of psilocybin-assisted therapy with psychological support to enhance treatment efficacy. The company is committed to addressing the significant unmet needs in mental health care by advancing evidence-based solutions for those suffering from mental health challenges.

AN2 Therapeutics

Post in 2023
AN2 Therapeutics, Inc. is a biopharmaceutical company based in Menlo Park, California, founded in 2017. The company is dedicated to the research, development, and commercialization of innovative medicines aimed at addressing infectious diseases. AN2 Therapeutics is focused on developing epetraborole, a once-daily oral treatment for patients suffering from chronic non-tuberculous mycobacterial lung disease, which represents a significant unmet medical need. Additionally, the company has established a strategic partnership with Brii Biosciences to enhance its development efforts.

Taysha Gene Therapies

Post in 2023
Taysha Gene Therapies, Inc. is a gene therapy company based in Dallas, Texas, established in 2019, focused on developing adeno-associated virus (AAV)-based gene therapies for monogenic diseases affecting the central nervous system (CNS). The company’s product pipeline includes several therapies currently in development, such as TSHA-101 for GM2 gangliosidosis, TSHA-118 for CLN1 disease, TSHA-102 for Rett syndrome, TSHA-103 for SLC6A1 haploinsufficiency disorder, and TSHA-104 for Surfeit locus 1 deficiency. Taysha Gene Therapies aims to translate innovative treatments from research to clinical practice efficiently, leveraging a strategic partnership with The University of Texas Southwestern Medical Center to enhance its development and commercialization capabilities. The company's mission is to create curative medicines that target both rare and prevalent CNS conditions, thereby addressing severe and life-threatening diseases.

ADARx Pharmaceuticals

Series C in 2023
ADARx Pharmaceuticals, Inc. is a clinical-stage biotechnology company based in San Diego, California, focused on the research and development of RNA editing therapeutics. Founded in 2019, the company specializes in the precise targeting and correction of single point mutations on mRNA transcripts using a proprietary platform that leverages endogenous enzymes known as adenosine deaminase acting on RNA (ADAR). This innovative approach aims to restore the production of functional proteins, addressing genetic mutations that lead to various diseases. ADARx Pharmaceuticals is developing a diverse pipeline of ribonucleic acid targeting therapeutics aimed at treating conditions across multiple therapeutic areas, including genetic disorders, cardiometabolic diseases, complement-mediated diseases, and central nervous system disorders.

Gracell Biotechnologies

Post in 2023
Gracell Biotechnologies Inc. is a clinical-stage biopharmaceutical company based in Shanghai, China, focused on discovering and developing cell therapies for cancer treatment. The company’s lead product candidates include GC012F, a dual-target autologous CAR-T therapy for multiple myeloma, and GC019F, which targets adult B cell acute lymphoblastic leukemia and is also being investigated for relapsed or refractory B cell non-Hodgkin’s lymphoma. Additionally, Gracell is developing GC007F for B cell non-Hodgkin's lymphoma and GC027, an allogeneic CAR-T product candidate for adult T cell acute lymphoblastic leukemia. The company also has GC007g, a donor-derived therapy for relapsed or refractory B cell acute lymphoblastic leukemia, and a pipeline of earlier stage candidates targeting other cancer types, including ovarian cancer and breast cancer. Founded in 2017, Gracell aims to provide innovative cellular therapeutics that enhance treatment options for patients suffering from various hematological malignancies and solid tumors.

CG Oncology

Series F in 2023
CG Oncology is a clinical-stage biopharmaceutical company dedicated to developing innovative immunotherapies for cancer treatment, particularly focusing on bladder cancer. The company specializes in oncolytic immunotherapies, with its lead candidate, cretostimogene grenadenorepvec, designed as a targeted, intravesical immunotherapy. Currently, CG Oncology is conducting multiple clinical trials, including two phase three trials aimed at high-risk patients with non-muscle invasive bladder cancer (NMIBC) who are unresponsive to BCG therapy, as well as an additional phase two study in combination with a checkpoint inhibitor. The company aims to provide effective bladder-sparing treatment options for patients while advancing the development of its proprietary therapies.

Upstream Bio

Series B in 2023
Upstream Bio is a clinical-stage biotechnology company dedicated to developing antibody therapies for inflammatory diseases, particularly severe asthma and other respiratory disorders. The company's lead candidate, verekitug, is a monoclonal antibody that acts as an antagonist to the Thymic Stromal Lymphopoietin (TSLP) receptor. TSLP is a key cytokine that drives inflammatory responses and is strategically positioned upstream of various signaling pathways influencing immune cells. Upstream Bio aims to address unmet medical needs in the treatment of severe respiratory conditions by leveraging this validated target to create effective therapies.

Alkeus Pharmaceuticals

Series B in 2023
Alkeus Pharmaceuticals is a Boston-based clinical-stage biopharmaceutical company dedicated to developing treatments for serious and untreatable ophthalmic conditions. The company's primary focus is on its lead drug candidate, an orally delivered compound aimed at addressing Stargardt disease and age-related macular degeneration. This innovative treatment has the potential to help medical professionals manage symptoms of irreversible vision loss early in life, offering hope to patients affected by these debilitating eye diseases.

Carmot Therapeutics

Series E in 2023
Carmot Therapeutics, Inc. is a clinical-stage biotechnology company based in Berkeley, California, with an additional office in San Francisco. Founded in 2008, the company focuses on discovering and developing therapies for metabolic diseases, including obesity and diabetes. Carmot employs a proprietary drug discovery approach known as Chemotype Evolution, which enables the exploration of novel chemical and biological frontiers. The company is advancing a portfolio of clinical-stage drug candidates, including CT-388, a once-weekly injectable dual GLP-1/GIP receptor agonist; CT-996, a once-daily oral GLP-1 receptor agonist; and CT-868, a once-daily injectable dual GLP-1/GIP receptor agonist for treating type 1 diabetes in patients with overweight or obesity. These innovative therapies aim to enhance glucose clearance and promote weight loss, addressing the fundamental causes of metabolic diseases.

Icosavax

Post in 2023
Icosavax, Inc. is a biotechnology company based in Seattle, Washington, founded in 2017. The company specializes in developing vaccines using its innovative virus-like particle (VLP) technology platform, which allows for the multivalent display of complex viral antigens. This technology aims to provide broad and durable protection against various infectious diseases, with an initial focus on life-threatening respiratory illnesses. Icosavax's pipeline includes vaccine candidates targeting respiratory syncytial virus (RSV), human metapneumovirus (hMPV), and SARS-CoV-2. The company is dedicated to advancing its VLP technology to discover, develop, and ultimately commercialize effective vaccines against these infectious diseases.

Abivax

Post in 2023
Abivax is a clinical-stage biotechnology company based in France that develops therapeutics aimed at harnessing the body's natural immune response to treat autoimmune diseases, viral infections, and cancer. The company is currently evaluating its drug candidate, obefazimod, in Phase 3 clinical trials for the treatment of adults with moderately to severely active ulcerative colitis. Abivax focuses on addressing significant unmet medical needs in chronic inflammatory diseases, particularly inflammatory bowel diseases, which include ulcerative colitis and Crohn's disease. Through its innovative drug development platforms, Abivax aims to provide novel and effective treatment options for patients suffering from these conditions.

Tourmaline Bio

Series A in 2023
Tourmaline Bio is a clinical biotechnology company focused on developing transformative medicines aimed at improving the lives of patients suffering from immune diseases. The company is in the late stages of clinical development and is centered on its lead product candidate, TOUR006, a fully human monoclonal antibody designed to selectively target interleukin-6 (IL-6), a significant proinflammatory cytokine implicated in various autoimmune and inflammatory disorders. The IL-6 antibody class has a well-established history, with over two decades of clinical and commercial experience, having successfully treated more than a million patients with diverse autoimmune and inflammatory conditions. Through its innovative research, Tourmaline Bio seeks to address the unmet medical needs of patients affected by life-altering immune diseases.

VectivBio

Post in 2022
VectivBio AG is a clinical-stage biotechnology company based in Basel, Switzerland, founded in 2019 as a spinout from Therachon. The company specializes in the discovery, development, and commercialization of innovative treatments for severe rare diseases, particularly those with significant unmet medical needs. Its lead product candidate, Apraglutide, is a synthetic GLP-2 analog designed to enhance the intestine’s ability to absorb fluids and nutrients, thereby reducing the reliance on parenteral support in patients with short bowel syndrome. VectivBio is dedicated to developing best-in-disease therapies that aim to meaningfully improve the lives of patients and their families, providing more than just incremental advancements over existing standard-of-care options.

Immunovant

Post in 2022
Immunovant, headquartered in New York, is a clinical-stage biopharmaceutical company dedicated to improving the lives of patients with autoimmune diseases. Its primary focus is on developing monoclonal antibodies, notably IMVT-1401, a fully human antibody that targets the neonatal Fc receptor (FcRn). This investigational product is designed for subcutaneous injection and aims to address various IgG-mediated autoimmune conditions. IMVT-1401 is currently in Phase IIa clinical trials for myasthenia gravis and thyroid eye disease, with Phase II trials also initiated for warm autoimmune hemolytic anemia. Additionally, the company is developing batoclimab and IMVT-1402, both targeting FcRn.

Allakos

Post in 2022
Allakos Inc. is a clinical-stage biopharmaceutical company based in Redwood City, California, founded in 2012. The company focuses on developing antibody-based therapeutics aimed at treating various conditions linked to dysregulation of the T-helper type 2 immune response, such as allergic diseases and chronic inflammation. Its lead product, antolimab (AK002), targets conditions including eosinophilic gastritis, eosinophilic gastroenteritis, chronic urticaria, indolent systemic mastocytosis, and severe allergic conjunctivitis. Additionally, Allakos is developing AK006, an antibody that targets Siglec-6, an inhibitory receptor found on mast cells. By binding to Siglec-6, AK006 is designed to enhance the receptor's natural inhibitory function, thereby reducing mast cell activation and associated inflammatory responses.

Abivax

Post in 2022
Abivax is a clinical-stage biotechnology company based in France that develops therapeutics aimed at harnessing the body's natural immune response to treat autoimmune diseases, viral infections, and cancer. The company is currently evaluating its drug candidate, obefazimod, in Phase 3 clinical trials for the treatment of adults with moderately to severely active ulcerative colitis. Abivax focuses on addressing significant unmet medical needs in chronic inflammatory diseases, particularly inflammatory bowel diseases, which include ulcerative colitis and Crohn's disease. Through its innovative drug development platforms, Abivax aims to provide novel and effective treatment options for patients suffering from these conditions.

Aktis Oncology

Series A in 2022
Aktis Oncology is a biotechnology company focused on developing targeted radiopharmaceuticals for the treatment of various solid tumor cancers. The company has created proprietary platforms that generate tumor-targeting agents optimized for alpha radiotherapy. These agents are engineered to achieve high penetration into tumors and prolonged residence time, allowing for effective tumor elimination while reducing side effects associated with treatment. Additionally, Aktis Oncology's innovative approach enables clinicians to visualize and confirm target engagement before administering therapeutic radioisotopes, enhancing the precision of cancer treatment.

Upstream Bio

Series A in 2022
Upstream Bio is a clinical-stage biotechnology company dedicated to developing antibody therapies for inflammatory diseases, particularly severe asthma and other respiratory disorders. The company's lead candidate, verekitug, is a monoclonal antibody that acts as an antagonist to the Thymic Stromal Lymphopoietin (TSLP) receptor. TSLP is a key cytokine that drives inflammatory responses and is strategically positioned upstream of various signaling pathways influencing immune cells. Upstream Bio aims to address unmet medical needs in the treatment of severe respiratory conditions by leveraging this validated target to create effective therapies.

Plexium

Series B in 2022
Plexium, Inc. is a biotechnology company based in San Diego, California, that specializes in developing targeted protein degradation therapies aimed at treating cancer and neurodegenerative diseases. Founded in 2017, Plexium utilizes a platform that identifies small molecules capable of modulating E3 ligases, which play a crucial role in protein degradation. This platform includes the DELPhe screening technology, designed for high-content readouts from cell-based assays. By harnessing E3 ligases, Plexium's approach enables selective targeting of various cancers, including small cell lung and breast tumors. The company's innovative research extends beyond existing therapies, exploring new drug-like protein degraders and molecular glues to enhance treatment options for cancer and inflammatory diseases.

Arbor Biotechnologies

Series B in 2021
Arbor Biotechnologies, Inc., founded in 2016 and headquartered in Cambridge, Massachusetts, operates as a bio-discovery company in the biotechnology sector. The company focuses on developing genomic tools that enhance human health and sustainability. Utilizing a combination of artificial intelligence, genome sequencing, gene synthesis, and high-throughput screening, Arbor's platform accelerates the discovery of proteins and facilitates human diagnostic development. The technology aggregates genomic sequence data through AI and machine learning, enabling drug developers to replace entire genes and precisely correct mutations. This approach aims to streamline the development of curative treatments for previously incurable genetic diseases, ultimately improving the lives of patients affected by such conditions.

Structure Therapeutics

Series B in 2021
Structure Therapeutics is a clinical-stage biopharmaceutical company focused on developing novel oral therapeutics for chronic diseases with significant unmet medical needs. Utilizing advanced computational and structure-based technology, the company designs orally available small molecules that aim to overcome the limitations of traditional biologic and peptide drugs. Its lead product candidate, GSBR-1290, is a small molecule agonist targeting the glucagon-like peptide-1 receptor, which is relevant for treating type-2 diabetes and obesity. Additionally, Structure Therapeutics is advancing other oral therapeutics targeting G-protein-coupled receptors for conditions such as pulmonary and cardiovascular diseases, including candidates ANPA-0073 and LTSE-2578. The company combines expertise in drug design and development to create differentiated and effective treatments that can have a profound impact on patient care.

Alpine Immune Sciences

Post in 2021
Alpine Immune Sciences, Inc. is a clinical-stage biopharmaceutical company based in Seattle, Washington, that specializes in the discovery and development of protein-based immunotherapies aimed at treating cancer, autoimmune, and inflammatory disorders. The company leverages a proprietary scientific platform to transform native immune system proteins into innovative therapeutic candidates. Its leading programs include ALPN-101, a dual antagonist targeting the inducible T cell costimulator and CD28 pathways, designed for autoimmune and inflammatory conditions, and ALPN-303, a dual antagonist of the B cell activating factor and proliferation-inducing ligand, which is vital for B cell activation and survival. Additionally, Alpine Immune Sciences has established a collaboration with Kite Pharma to explore immunotherapies targeting the immune synapse for cancer treatment.

Obsidian Therapeutics

Series B in 2021
Obsidian Therapeutics develops innovative cell and gene therapies aimed at enhancing adoptive immunotherapy for cancer patients. Founded in 2015 and based in Cambridge, Massachusetts, the company focuses on creating next-generation therapies that utilize pharmacologic operating systems to provide precise control over protein activity within cells. This technology allows for the development of adoptive cell therapies with advanced functionalities that can be managed by physicians using simple, safe, and orally active medications. By offering improved control over treatment, Obsidian Therapeutics aims to provide better outcomes for patients compared to existing cell therapy options.

Versanis Bio

Series A in 2021
Versanis Bio is focused on discovering and developing medicines that target medical conditions commonly found in older adults. The company is advancing Bimagrumab, a human monoclonal antibody that inhibits activin type II receptors, blocking the action of ligands such as activin A and myostatin. Previous studies conducted by Novartis involved over 1,500 participants and demonstrated that Bimagrumab consistently induced significant fat loss while preserving lean mass. Additionally, the treatment has shown improvements in HbA1c levels and other cardiometabolic parameters, offering a promising option for overweight and obese adults aiming to achieve and maintain a healthier body composition.

Artios Pharma

Series C in 2021
Artios Pharma Limited is a biotechnology company based in Cambridge, United Kingdom, that specializes in developing innovative cancer treatments targeting DNA damage response (DDR) pathways. Founded in 2015, the company is dedicated to creating first-in-class therapies aimed at selectively killing cancer cells. Artios's product pipeline features several promising programs, including a focus on DNA polymerase theta (Polθ), which plays a crucial role in DNA repair processes. Additionally, the company is advancing an in-licensed program that targets a newly identified protein linked to DDR and is developing a novel treatment aimed at DNA nucleases involved in these pathways. Artios collaborates with Cancer Research Technology and prominent DNA repair researchers globally to enhance its research and development efforts.

RayzeBio

Series C in 2021
RayzeBio, Inc. is a biotechnology company based in San Diego, California, founded in 2020. It specializes in developing tumor-targeted small molecule medicines that utilize the therapeutic potential of radioisotopes, particularly Actinium-225, an alpha-emitting radioisotope aimed at treating solid tumors. RayzeBio is focused on enhancing cancer treatment outcomes by creating a robust pipeline of radiopharmaceutical candidates targeting validated oncology drug targets. The company's portfolio includes a range of drug candidates at various stages of development, from discovery to late-stage clinical programs, addressing significant market opportunities in the field of cancer therapeutics.

Synthekine

Series B in 2021
Synthekine Inc. is a biotechnology company focused on developing innovative cytokine therapies and immunotherapies for cancer and autoimmune disorders. Established in 2018 and located in Menlo Park, California, the company employs advanced platforms such as engineered partial agonists and orthogonal cell therapies. Its Synthekine Platform utilizes surrogate agonists instead of traditional mutant cytokines, allowing for the creation of therapeutics that enhance efficacy while minimizing side effects. The product pipeline includes STK-009, an orthogonal ligand, and SYNCAR-001, a CAR-T therapy targeting CD-19, along with STK-012, which consists of partial agonists of IL-2. Synthekine aims to revolutionize treatment paradigms by harnessing the principles of cytokine partial agonism and immunological specificity, leading to novel immunotherapies that improve patient outcomes.

Magenta Therapeutics

Post in 2021
Magenta Therapeutics is a clinical-stage biotechnology company focused on developing innovative therapies to enhance stem cell transplantation for patients with blood cancers, genetic diseases, and autoimmune disorders. The company aims to improve the safety and efficacy of stem cell transplants, which are currently high-risk procedures often considered only as a last resort. Its pipeline includes several key product candidates, such as targeted antibody-drug conjugates for transplant conditioning, a novel stem cell mobilization agent, and allogeneic stem cell therapies. Magenta is also exploring collaborations to assess the effectiveness of its therapies in combination with existing treatments, such as gene therapies for sickle cell disease. Founded in 2015 and headquartered in Cambridge, Massachusetts, Magenta Therapeutics seeks to expand the curative potential of stem cell therapies to a broader patient population by addressing the toxicity and long-term side effects associated with current transplant methods.

Eikon Therapeutics

Series A in 2021
Eikon Therapeutics, Inc. is a biopharmaceutical company based in Hayward, California, focused on developing innovative treatments for chronic and life-threatening diseases. Founded in 2019, the company employs advanced super-resolution microscopy and live-cell imaging techniques to discover drugs targeting previously intractable proteins. By integrating biology, engineering, and chemistry, Eikon Therapeutics aims to enhance the understanding of cellular processes and improve drug discovery efficiency. Its proprietary platforms allow for the sensitive identification of compound-protein interactions, enabling the direct measurement of how chemical compounds affect individual proteins in live cells. This novel approach seeks to unlock new therapeutic opportunities and expand the company's pipeline of potential medications.

Affinia Therapeutics

Series B in 2021
Affinia Therapeutics Inc. is focused on developing gene therapies for various diseases, particularly those affecting the muscles and central nervous system. The company specializes in creating adeno-associated virus (AAV) vectors, leveraging advanced techniques in synthetic and systems biology, as well as high-throughput screening and tissue and single-cell resolution. Founded in 2019 and based in Waltham, Massachusetts, Affinia aims to address significant unmet medical needs by providing rationally designed gene therapies with improved properties. The company's innovative approach seeks to offer effective treatments for devastating conditions that currently lack adequate therapeutic options.

Entrada Therapeutics

Series B in 2021
Entrada Therapeutics, Inc. is a clinical-stage biotechnology company based in Boston, Massachusetts, focused on treating diseases through the intracellular delivery of biologics. Founded in 2016, the company has developed innovative technologies that facilitate the efficient delivery of proteins, peptides, and nucleic acids, targeting intracellular sites that have traditionally been difficult to access. Entrada's approach includes Intracellular Enzyme Replacement Therapy (IC-ERT) and Endosomal Escape Vehicle (EEV) therapeutics, which aim to improve the therapeutic index by enabling the delivery of a wide range of therapeutics across various organs and tissues. The company's pipeline addresses conditions related to neuromuscular diseases and expands into additional therapeutic areas, positioning Entrada at the forefront of advancing treatment options for patients with devastating illnesses.

Aktis Oncology

Series A in 2021
Aktis Oncology is a biotechnology company focused on developing targeted radiopharmaceuticals for the treatment of various solid tumor cancers. The company has created proprietary platforms that generate tumor-targeting agents optimized for alpha radiotherapy. These agents are engineered to achieve high penetration into tumors and prolonged residence time, allowing for effective tumor elimination while reducing side effects associated with treatment. Additionally, Aktis Oncology's innovative approach enables clinicians to visualize and confirm target engagement before administering therapeutic radioisotopes, enhancing the precision of cancer treatment.
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