Joseph Charalel

Senior Associate

Meng Gao

Managing Partner

Rob Hopfner

Managing Partner

Robert Hopfner Ph.D

Managing Director

Ashish Khanna Ph.D

Partner

Ash Khanna

Partner

Jeni Lee

Partner

Simon Tsang

Operating Partner

43 past transactions

Windward Bio

Series A in 2025
Windward Bio is a clinical-stage biopharmaceutical company dedicated to enhancing outcomes for patients with advanced immunological diseases, focusing on severe respiratory conditions. The company is advancing a fully human monoclonal antibody targeting thymic stromal lymphopoietin (TSLP) into phase 2 clinical trials. This antibody, administered subcutaneously, potently binds to the TSLP ligand, extending its half-life and silencing its effector functions. Windward Bio is also developing innovative bispecific programs for other immunological disorders, led by a team of experienced biopharmaceutical executives aiming to address significant unmet medical needs in this field.

Evommune

Series C in 2024
Evommune, Inc. is a biotechnology company based in Los Altos, California, that develops and manufactures tissue-based medicines for inflammatory diseases. Incorporated in 2020, Evommune focuses on creating novel strategies to treat these disorders by addressing both symptoms and the underlying causes, thereby halting disease progression. The company employs a proprietary tissue-based platform that accelerates the discovery of innovative treatments, enhancing the potential for clinical success. With a commitment to improving the quality of life for patients, Evommune's pipeline includes initiatives aimed at tackling a range of prevalent inflammatory illnesses, positioning the company as a leader in advancing therapies in the fields of immunology and dermatology.

Zenas BioPharma

Series C in 2024
Zenas BioPharma is a clinical-stage biopharmaceutical company focused on developing immune-based therapies for autoimmune and immune-mediated diseases. Based in Florida, United States, the company advances biologic programs and aims to modulate B cell–driven pathology. Its lead product candidate, obexelimab, is a bifunctional monoclonal antibody designed to bind both CD19 and FcγRIIb on B cells, thereby inhibiting harmful immune activity without depleting B cells.

BioAge Labs

Series D in 2024
BioAge Labs develops medicines to treat aging and age-related diseases using its proprietary BioAge platform, which combines systems biology and AI. Its pipeline includes BGE-117 for multiple aging-related conditions, BGE-175 for immune aging and respiratory infections, and azelaprag for obesity in the elderly.

Heranova Lifesciences

Seed Round in 2023
Heranova Lifesciences is a company focused on providing innovative solutions for women's health, specifically in the fields of obstetrics and gynecology. It develops advanced medical technologies that address unmet needs related to women's health issues. By integrating diagnostics, pharmaceuticals, medical devices, and data, Heranova Lifesciences aims to facilitate the early development of innovative treatments for conditions such as endometriosis and gynecological inflammation. This comprehensive approach enables the company to effectively respond to the unique challenges faced by women in managing their health.

Avalyn Pharma

Series C in 2023
Avalyn Pharma is a biopharmaceutical company focused on developing therapies for severe respiratory diseases, notably idiopathic pulmonary fibrosis (IPF). Established in 2011, the company is headquartered in Seattle, Washington.

Evommune

Series B in 2023
Evommune, Inc. is a biotechnology company based in Los Altos, California, that develops and manufactures tissue-based medicines for inflammatory diseases. Incorporated in 2020, Evommune focuses on creating novel strategies to treat these disorders by addressing both symptoms and the underlying causes, thereby halting disease progression. The company employs a proprietary tissue-based platform that accelerates the discovery of innovative treatments, enhancing the potential for clinical success. With a commitment to improving the quality of life for patients, Evommune's pipeline includes initiatives aimed at tackling a range of prevalent inflammatory illnesses, positioning the company as a leader in advancing therapies in the fields of immunology and dermatology.

Heranova Lifesciences

Seed Round in 2023
Heranova Lifesciences is a company focused on providing innovative solutions for women's health, specifically in the fields of obstetrics and gynecology. It develops advanced medical technologies that address unmet needs related to women's health issues. By integrating diagnostics, pharmaceuticals, medical devices, and data, Heranova Lifesciences aims to facilitate the early development of innovative treatments for conditions such as endometriosis and gynecological inflammation. This comprehensive approach enables the company to effectively respond to the unique challenges faced by women in managing their health.

Oculis Holding

Post in 2023
Oculis Holding AG is a global biopharmaceutical company focused on advancing eye care and preserving vision. The company has developed a novel drug delivery platform that enhances the absorption of therapeutics to both the anterior and posterior segments of the eye. This innovative approach enables the treatment of posterior eye diseases, such as diabetic macular edema, through a simple topical application, thus offering a non-invasive alternative to traditional methods. Oculis's product pipeline includes OCS-01, a topical treatment for diabetic macular edema; OCS-02, a topical biologic for dry eye disease; and OCS-05, a disease-modifying candidate targeting acute optic neuritis and other neuro-ophthalmic disorders, including glaucoma and diabetic retinopathy. Through its cutting-edge technologies and therapeutic candidates, Oculis aims to significantly improve patient outcomes in the field of ophthalmology.

Zenas BioPharma

Series B in 2022
Zenas BioPharma is a clinical-stage biopharmaceutical company focused on developing immune-based therapies for autoimmune and immune-mediated diseases. Based in Florida, United States, the company advances biologic programs and aims to modulate B cell–driven pathology. Its lead product candidate, obexelimab, is a bifunctional monoclonal antibody designed to bind both CD19 and FcγRIIb on B cells, thereby inhibiting harmful immune activity without depleting B cells.

Plexium

Series B in 2022
Plexium, Inc. is a biotechnology company based in San Diego, California, specializing in the development of targeted protein degradation therapeutics aimed at treating cancer and neurodegenerative diseases. Founded in 2017, Plexium focuses on identifying E3 ligase modulating small molecules to create innovative therapies. The company has developed a screening platform known as DELPhe, which utilizes advanced techniques to miniaturize cell-based assays for high-content readouts. This platform enables the modulation of E3 ligases to selectively target various cancers, including small cell lung and breast tumors, while also inducing immune responses. By exploring next-generation drug candidates that extend beyond traditional approaches, Plexium is poised to uncover new therapeutic possibilities across a wide range of medical applications.

Arkuda Therapeutics

Series B in 2022
Arkuda Therapeutics, Inc. is a biotechnology company founded in 2018 and based in Cambridge, Massachusetts, focused on developing innovative treatments for patients with neurological diseases. The company utilizes new insights into progranulin and lysosomal biology to create therapies that aim to correct progranulin deficiency and address lysosomal dysfunction, particularly in genetically-defined frontotemporal dementia associated with mutations in the GRN gene. By targeting these underlying biological mechanisms, Arkuda's lead compounds are designed to improve cellular health in the brain, potentially delaying the progression of neurodegenerative diseases and the onset of their symptoms.

SanReno Therapeutics

Funding Round in 2021
SanReno Therapeutics is a biotechnology company that specializes in the development, manufacturing, and commercialization of therapies for kidney diseases and related conditions. Operating primarily in the People’s Republic of China, Hong Kong, Macau, Taiwan, and Singapore, the company is dedicated to advancing research and development in this therapeutic area. Formed as a joint venture between Chinook Therapeutics, Frazier Healthcare Partners, and Pivotal bioVenture Partners China, SanReno Therapeutics aims to create innovative solutions that enhance the quality of life for patients suffering from kidney-related ailments.

Ablaze Pharmaceuticals

Series A in 2021
Ablaze Pharmaceuticals is a clinical-stage biopharmaceutical company dedicated to developing Targeted Radiotherapy (TRT) treatments aimed at benefiting cancer patients. The company focuses on innovative TRT products, utilizing the extensive business experience and networks of its founders in cross-border product development and deal-making. By targeting the Chinese market, Ablaze Pharmaceuticals seeks to provide effective cancer treatment options tailored to the needs of patients in the region.

HotSpot Therapeutics

Series C in 2021
HotSpot Therapeutics is a biotechnology startup based in Boston, Massachusetts, established in 2017. The company specializes in the development of allosteric therapies that target regulatory sites on proteins. Its innovative therapeutic platform is designed to identify hotspots and locate pathway treatments for cancer, metabolic disorders, and rare diseases. By leveraging a comprehensive database of hotspot structures and utilizing data science, HotSpot Therapeutics employs a multidisciplinary approach to drug discovery. This approach aims to enhance the effectiveness of treatments and improve patient outcomes across a range of conditions.

Evommune

Series A in 2021
Evommune, Inc. is a biotechnology company based in Los Altos, California, that develops and manufactures tissue-based medicines for inflammatory diseases. Incorporated in 2020, Evommune focuses on creating novel strategies to treat these disorders by addressing both symptoms and the underlying causes, thereby halting disease progression. The company employs a proprietary tissue-based platform that accelerates the discovery of innovative treatments, enhancing the potential for clinical success. With a commitment to improving the quality of life for patients, Evommune's pipeline includes initiatives aimed at tackling a range of prevalent inflammatory illnesses, positioning the company as a leader in advancing therapies in the fields of immunology and dermatology.

Obsidian Therapeutics

Series B in 2021
Founded in 2015 and based in Cambridge, Massachusetts, Obsidian Therapeutics develops next-generation controllable cell and gene therapies designed to extend adoptive immunotherapy to every cancer patient. Its innovative approach uses pharmacologic operating systems to precisely control protein activity in cells, enabling physicians to improve upon current cell therapies using simple, safe, orally-active marketed drugs.

Vigil Neuroscience

Series B in 2021
Vigil Neuroscience is a clinical-stage biotechnology company focused on developing therapeutics that restore the function of microglia, the brain's immune cells. The company aims to improve outcomes for patients with neurodegenerative diseases by advancing its lead monoclonal antibody TREM2 agonist through Phase 1 trials and progressing its small molecule TREM2 agonist towards an Investigational New Drug (IND) application.

Oculis Holding

Series C in 2021
Oculis Holding AG is a global biopharmaceutical company focused on advancing eye care and preserving vision. The company has developed a novel drug delivery platform that enhances the absorption of therapeutics to both the anterior and posterior segments of the eye. This innovative approach enables the treatment of posterior eye diseases, such as diabetic macular edema, through a simple topical application, thus offering a non-invasive alternative to traditional methods. Oculis's product pipeline includes OCS-01, a topical treatment for diabetic macular edema; OCS-02, a topical biologic for dry eye disease; and OCS-05, a disease-modifying candidate targeting acute optic neuritis and other neuro-ophthalmic disorders, including glaucoma and diabetic retinopathy. Through its cutting-edge technologies and therapeutic candidates, Oculis aims to significantly improve patient outcomes in the field of ophthalmology.

Exscientia

Series D in 2021
Exscientia is a biotechnology company that leverages artificial intelligence and machine learning to enhance the discovery and design of novel therapeutic compounds. By integrating human expertise with advanced computational techniques, Exscientia accelerates the development of small-molecule drug candidates, aiming to produce safe and effective treatments for clinical testing. The company's innovative approach seeks to revolutionize the pharmaceutical industry by improving the precision and efficiency of drug discovery, ultimately enhancing patient outcomes.

Arctic Vision

Series B in 2021
Arctic Vision is a clinical-stage specialty ophthalmology company based in China, focused on developing innovative therapies to meet the unmet clinical needs in ophthalmic diseases. The company boasts a leading portfolio of breakthrough technologies aimed at addressing various eye care challenges in China, Asia, and globally. Established by prominent life sciences investors, Arctic Vision is guided by a team of experienced professionals from the ophthalmic industry, who possess extensive knowledge in research and development as well as commercialization of eye care products. The company's efforts include the development of new ophthalmic medicines, particularly gene therapies, that hold significant commercial potential and aim to improve the recovery outcomes for patients with rare ophthalmic conditions.

Plexium

Series A in 2021
Plexium, Inc. is a biotechnology company based in San Diego, California, specializing in the development of targeted protein degradation therapeutics aimed at treating cancer and neurodegenerative diseases. Founded in 2017, Plexium focuses on identifying E3 ligase modulating small molecules to create innovative therapies. The company has developed a screening platform known as DELPhe, which utilizes advanced techniques to miniaturize cell-based assays for high-content readouts. This platform enables the modulation of E3 ligases to selectively target various cancers, including small cell lung and breast tumors, while also inducing immune responses. By exploring next-generation drug candidates that extend beyond traditional approaches, Plexium is poised to uncover new therapeutic possibilities across a wide range of medical applications.

Visen Pharmaceuticals

Series B in 2021
Visen Pharmaceuticals is an innovative biopharmaceutical company focused on developing and providing advanced treatments for endocrine diseases in China. With a patient-centric approach, Visen aims to deliver first-in-class or best-in-class products, covering both common and rare endocrine conditions in adults and children. The company leverages cutting-edge technologies and global resources, with established offices in Shanghai, Beijing, Hong Kong, and Taipei, along with a Greater China R&D and manufacturing site in Suzhou.

Evommune

Seed Round in 2020
Evommune, Inc. is a biotechnology company based in Los Altos, California, that develops and manufactures tissue-based medicines for inflammatory diseases. Incorporated in 2020, Evommune focuses on creating novel strategies to treat these disorders by addressing both symptoms and the underlying causes, thereby halting disease progression. The company employs a proprietary tissue-based platform that accelerates the discovery of innovative treatments, enhancing the potential for clinical success. With a commitment to improving the quality of life for patients, Evommune's pipeline includes initiatives aimed at tackling a range of prevalent inflammatory illnesses, positioning the company as a leader in advancing therapies in the fields of immunology and dermatology.

Arctic Vision

Series A in 2020
Arctic Vision is a clinical-stage specialty ophthalmology company based in China, focused on developing innovative therapies to meet the unmet clinical needs in ophthalmic diseases. The company boasts a leading portfolio of breakthrough technologies aimed at addressing various eye care challenges in China, Asia, and globally. Established by prominent life sciences investors, Arctic Vision is guided by a team of experienced professionals from the ophthalmic industry, who possess extensive knowledge in research and development as well as commercialization of eye care products. The company's efforts include the development of new ophthalmic medicines, particularly gene therapies, that hold significant commercial potential and aim to improve the recovery outcomes for patients with rare ophthalmic conditions.

Bolt Biotherapeutics

Series C in 2020
Bolt Biotherapeutics is a biotechnology company developing cancer immunotherapies based on the Boltbody platform, which links tumor-targeting antibodies to immune-stimulating payloads to activate innate and adaptive immune responses against solid tumors. The platform aims to transform non-responsive, or cold, tumors into immunologically active ones by delivering immune stimulants at the tumor site. The company’s pipeline includes BDC-1001 as a monotherapy for HER2-expressing solid tumors, with additional candidates such as BDC-3042 and Next-Gen ISAC designed to broaden its immuno-oncology program. Bolt Biotherapeutics focuses on myeloid biology and tumor-targeted therapies to leverage immune mechanisms for cancer treatment.

Avalyn Pharma

Series B in 2020
Avalyn Pharma is a biopharmaceutical company focused on developing therapies for severe respiratory diseases, notably idiopathic pulmonary fibrosis (IPF). Established in 2011, the company is headquartered in Seattle, Washington.

Rallybio

Series B in 2020
Rallybio is a clinical-stage biopharmaceutical company focused on developing therapies for severe and rare diseases. Its programs cover hematology, immuno-inflammation, maternal-fetal health and metabolic disorders, with a lead candidate aimed at preventing fetal and neonatal alloimmune thrombocytopenia, a life-threatening condition that can cause bleeding in fetuses and newborns. Founded in 2018 and based in New Haven, Connecticut, Rallybio develops therapies across antibodies, small molecules and engineered proteins to address unmet needs in rare diseases. Guided by experienced biopharma leadership, the company emphasizes translating biology into transformative therapies for underserved patients.

Vaxcyte

Series D in 2020
Vaxcyte is a biotechnology company developing vaccines to prevent or treat infectious diseases worldwide. Its lead product is VAX-24, a 24-valent pneumococcal conjugate vaccine candidate. The company also develops vaccines targeting emerging strains of pneumococcal disease (VAX-XP), Group A Strep infections (VAX-A1), and periodontal disease (VAX-PG).

Akouos

Series B in 2020
Akouos is a biotechnology company focused on precision genetic medicine to restore and preserve hearing. Based in Boston, it develops gene therapies using a proprietary adeno-associated viral vector platform and delivery approaches to treat sensorineural hearing loss in genetically defined populations. The company's lead program, AK-OTOF, targets hearing loss caused by mutations in the OTOF gene. Akouos pursues research and development across gene-based interventions aimed at improving auditory function and long-term sensory outcomes. It has collaborations with academic and industry partners, including Massachusetts Eye and Ear and Lonza, to advance discovery and manufacturing capabilities. Founded in 2016, Akouos addresses unmet clinical needs in auditory health by seeking to restore physiologic hearing through targeted genetic therapies.

Aligos Therapeutics

Series B in 2020
Aligos Therapeutics is a biopharmaceutical company dedicated to developing innovative therapeutics targeting viral infections and liver diseases. Founded in 2018, the company focuses on chronic hepatitis B (CHB) and non-alcoholic steatohepatitis (NASH), leveraging its expertise in liver disease drug development.

Arcutis Biotherapeutics

Series C in 2019
Arcutis Biotherapeutics is a biopharmaceutical company dedicated to developing and commercializing treatments for immune-mediated dermatological diseases. Its lead product, ZORYVE roflumilast cream, has demonstrated symptomatic improvement in plaque psoriasis patients.

OncXerna Therapeutics

Series B in 2019
OncXerna Therapeutics, Inc. is a biotechnology company focused on developing precision medicines for cancer patients by utilizing an RNA-based biomarker platform. The company aims to improve patient outcomes by prospectively identifying individuals based on the unique RNA biology of their tumor microenvironments. This innovative approach enables OncXerna to match patients with targeted oncology therapies that correspond to their specific tumor characteristics. Founded in 2018 and based in Waltham, Massachusetts, with an additional location in Shanghai, China, OncXerna was formerly known as Oncologie, Inc. and changed its name in September 2020 to reflect its commitment to advancing next-generation precision medicine for a broader range of cancer patients.

Inozyme

Series A in 2019
Inozyme Pharma, Inc. is a biopharmaceutical company focused on developing therapies for rare diseases related to abnormal mineralization affecting the vasculature, soft tissue, and skeletal systems. The company's lead product candidate, INZ-701, is a recombinant protein designed to treat rare genetic conditions caused by ENPP1 and ABCC6 deficiencies, as well as calciphylaxis. Inozyme's therapies aim to address the underlying causes of these debilitating diseases, providing potentially disease-modifying treatments for conditions such as Generalized Arterial Calcification of Infancy and Autosomal Recessive Hypophosphatemic Rickets Type 2. The company has a licensing agreement with Yale University for certain therapeutic applications and is headquartered in Boston, Massachusetts. Established in 2015, Inozyme is dedicated to improving the quality of life for patients affected by severe metabolic disorders associated with mineral imbalances.

Fusion Pharmaceuticals

Series B in 2019
Fusion Pharmaceuticals is a clinical-stage biopharmaceutical company specializing in developing radiopharmaceuticals as precision medicines. It focuses on creating targeted alpha therapeutics using its proprietary linker technology to enhance the safety and efficacy of these drugs, ultimately improving cancer patient outcomes.

Karuna Therapeutics

Series B in 2019
Karuna Therapeutics is a biopharmaceutical company dedicated to developing innovative treatments for psychiatric and neurological disorders. Its primary focus is on creating novel therapies to address disabling neuropsychiatric conditions, with a particular emphasis on schizophrenia and the behavioral symptoms of Alzheimer's disease.

Bolt Biotherapeutics

Series B in 2019
Bolt Biotherapeutics is a biotechnology company developing cancer immunotherapies based on the Boltbody platform, which links tumor-targeting antibodies to immune-stimulating payloads to activate innate and adaptive immune responses against solid tumors. The platform aims to transform non-responsive, or cold, tumors into immunologically active ones by delivering immune stimulants at the tumor site. The company’s pipeline includes BDC-1001 as a monotherapy for HER2-expressing solid tumors, with additional candidates such as BDC-3042 and Next-Gen ISAC designed to broaden its immuno-oncology program. Bolt Biotherapeutics focuses on myeloid biology and tumor-targeted therapies to leverage immune mechanisms for cancer treatment.

Stealth BioTherapeutics

Convertible Note in 2018
Stealth BioTherapeutics is a clinical-stage biotechnology company dedicated to the discovery, development, and commercialization of innovative therapies targeting diseases associated with mitochondrial dysfunction. Founded in 2006 and headquartered in George Town, the Cayman Islands, the company’s lead product candidate, Elamipretide, aims to address both rare genetic and common age-related mitochondrial diseases. Additionally, Stealth BioTherapeutics is developing SBT-20, a small peptide designed to stabilize mitochondrial structure and function under oxidative stress, and SBT-272, which is being evaluated for its potential in treating rare neurodegenerative disorders, including amyotrophic lateral sclerosis. By focusing on mitochondrial health, Stealth BioTherapeutics seeks to improve outcomes for patients suffering from these challenging conditions.

OncXerna Therapeutics

Seed Round in 2018
OncXerna Therapeutics, Inc. is a biotechnology company focused on developing precision medicines for cancer patients by utilizing an RNA-based biomarker platform. The company aims to improve patient outcomes by prospectively identifying individuals based on the unique RNA biology of their tumor microenvironments. This innovative approach enables OncXerna to match patients with targeted oncology therapies that correspond to their specific tumor characteristics. Founded in 2018 and based in Waltham, Massachusetts, with an additional location in Shanghai, China, OncXerna was formerly known as Oncologie, Inc. and changed its name in September 2020 to reflect its commitment to advancing next-generation precision medicine for a broader range of cancer patients.

Oculis Holding

Series B in 2018
Oculis Holding AG is a global biopharmaceutical company focused on advancing eye care and preserving vision. The company has developed a novel drug delivery platform that enhances the absorption of therapeutics to both the anterior and posterior segments of the eye. This innovative approach enables the treatment of posterior eye diseases, such as diabetic macular edema, through a simple topical application, thus offering a non-invasive alternative to traditional methods. Oculis's product pipeline includes OCS-01, a topical treatment for diabetic macular edema; OCS-02, a topical biologic for dry eye disease; and OCS-05, a disease-modifying candidate targeting acute optic neuritis and other neuro-ophthalmic disorders, including glaucoma and diabetic retinopathy. Through its cutting-edge technologies and therapeutic candidates, Oculis aims to significantly improve patient outcomes in the field of ophthalmology.

Entasis Therapeutics

Series B in 2017
Entasis Therapeutics is a biopharmaceutical company focused on developing novel antibacterial products to treat serious infections caused by multi-drug resistant gram-negative bacteria. Its pipeline includes ETX2514SUL for Acinetobacter baumannii infections, ETX0282CPDP for Enterobacteriaceae infections, and zoliflodacin for Neisseria gonorrhoeae.

Iterum Therapeutics

Series B in 2017
Iterum Therapeutics is a clinical-stage pharmaceutical company focused on developing novel anti-infectives to combat multi-drug resistant pathogens. Its lead product, sulopenem, is a penem antibiotic with both oral and intravenous formulations, currently in Phase III trials for treating various urinary tract infections and intra-abdominal infections.

Vaxcyte

Series B in 2017
Vaxcyte is a biotechnology company developing vaccines to prevent or treat infectious diseases worldwide. Its lead product is VAX-24, a 24-valent pneumococcal conjugate vaccine candidate. The company also develops vaccines targeting emerging strains of pneumococcal disease (VAX-XP), Group A Strep infections (VAX-A1), and periodontal disease (VAX-PG).
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