Mission BioCapital

Mission BioCapital is a life science venture capital firm investing in early-stage companies within the biotechnology sector. Founded in Cambridge, Massachusetts in 2009, the company is known for its experienced leadership team and deep support provided to portfolio companies.

Cassidy Blundell

Partner

Zach Collins

Partner

Zachary Collins Ph.D

Partner

Eric Linsley

Managing General Partner

Peter Parker

Managing General Partner

Past deals in Pharmaceuticals

D2B3

Pre Seed Round in 2025
D2B3 is a biotechnology startup focused on developing innovative drug delivery technologies for the brain and central nervous system. The company operates a pre-clinical platform that temporarily and selectively opens the blood-brain barrier, allowing for targeted and effective treatment of central nervous system diseases. Its proprietary technology is versatile and can be applied to various drugs and therapeutic classes, providing a plug-and-play approach.

SiteOne Therapeutics

Series C in 2024
SiteOne Therapeutics is a San Francisco-based company developing innovative therapeutics and diagnostics for acute and chronic pain. Their lead candidates are selective inhibitors of the Naᵥ1.7 ion channel, aiming to treat pain safely and effectively without relying on NSAIDs or opioids.

Alessa Therapeutics

Seed Round in 2024
Alessa Therapeutics, Inc. is a pre-clinical stage biotechnology company based in San Francisco, California, focused on developing localized treatments for solid organ diseases. Founded in 2018, the company specializes in a drug delivery implantable system specifically designed to treat prostate cancer. This innovative system allows for the sustained and localized administration of anti-androgen drugs directly to the tumor in the prostate, minimizing systemic exposure and enhancing treatment efficacy. By concentrating on localized therapies, Alessa Therapeutics aims to improve patient outcomes in the management of various organ diseases.

Nuvig Therapeutics

Series B in 2024
Nuvig Therapeutics focuses on developing innovative therapies aimed at restoring immune homeostasis and rebalancing immune function. The company is dedicated to creating a pipeline of novel immune therapeutics specifically targeting chronic inflammatory and autoimmune diseases. By harnessing natural mechanisms to modulate immune responses, Nuvig seeks to enhance treatment options for patients, ultimately improving their health outcomes.

Babylon Biosciences

Pre Seed Round in 2024
Babylon Biosciences is a biotechnology company dedicated to discovering and developing small-molecule therapeutics to treat Alzheimer's disease. Its proprietary platform facilitates the identification and advancement of these therapeutics, aiming to alleviate the burden of nerve and brain-related diseases.

Bullseye Bio

Pre Seed Round in 2024
Bullseye Bio is a biotechnology company specializing in drug discovery services. It operates a therapeutics discovery platform designed to generate scalable data for machine learning, with a focus on unlocking the therapeutic potential of intracellular protein-protein interactions. The company's pipeline includes treatments for cardiometabolic, inflammation, and oncology indications, aiming to provide life-saving therapies for high-need conditions.

Velocity Bio

Seed Round in 2024
Velocity Bio is a biotechnology company based in San Carlos, California, and is a spinout from Stanford University. The company focuses on high-throughput platforms designed for selectivity-first allosteric drug discovery, specifically targeting under-drugged human enzymes associated with severe diseases. Currently operating in stealth mode, Velocity Bio aims to innovate in the field of drug development by addressing critical unmet medical needs through its advanced technological approaches.

March Biosciences

Series A in 2024
March Biosciences is a clinical-stage biotechnology company specializing in cell therapies for hematological cancers. It focuses on developing CAR-T cell therapies, with its lead product, MB-105, targeting CD5 in refractory T-cell lymphoma and leukemia. The company's approach involves biologically informed target selection, simplified CAR-T engineering, and a streamlined manufacturing process to ensure cell functionality and consistency.

Nocion Therapeutics

Series B in 2024
Nocion Therapeutics is a biopharmaceutical company developing novel therapies called 'nocions' that selectively target actively firing nociceptors to provide relief for serious conditions such as cough, itch, pain, and inflammation.

Mediar Therapeutics

Series A in 2023
Mediar Therapeutics is a pre-clinical stage biotechnology company focused on developing therapeutics to treat fibrosis in chronically damaged organs. It designs antibodies that neutralize mediators driving fibrotic activity with the aim of halting and reversing fibrosis to improve patient outcomes. Founded in 2019 and based in Cambridge, Massachusetts, the company targets key fibrotic mediator proteins to address late-stage disease with precision and efficacy.

Nuvig Therapeutics

Series A in 2022
Nuvig Therapeutics focuses on developing innovative therapies aimed at restoring immune homeostasis and rebalancing immune function. The company is dedicated to creating a pipeline of novel immune therapeutics specifically targeting chronic inflammatory and autoimmune diseases. By harnessing natural mechanisms to modulate immune responses, Nuvig seeks to enhance treatment options for patients, ultimately improving their health outcomes.

Ambagon Therapeutics

Series A in 2022
Ambagon Therapeutics is a biotechnology company focused on developing small-molecule therapeutics for cancer treatment. The company specializes in research aimed at stabilizing the interactions of oncogenic proteins, which are often difficult to modulate with traditional methods. By selectively enhancing the activity of tumor-suppressing proteins associated with transcription factors and oncoproteins, Ambagon aims to provide new therapeutic options for addressing significant unmet clinical needs in oncology. Founded by Christian Ottmann, Lucas Brunsveld, and Michelle Arkin, the company is dedicated to advancing innovative solutions in cancer care.

Asher Bio

Series B in 2021
Asher Biotherapeutics, Inc. is a biotechnology company based in South San Francisco, California, founded in 2019. The company specializes in the development of immunotherapy drugs aimed at effectively treating cancer. Its innovative therapies are designed to enhance the immune system's ability to target and eliminate cancer cells while minimizing side effects. This focus allows healthcare providers to deliver effective treatments to patients in a shorter timeframe, aiming to improve overall outcomes in cancer care.

Mediar Therapeutics

Seed Round in 2021
Mediar Therapeutics is a pre-clinical stage biotechnology company focused on developing therapeutics to treat fibrosis in chronically damaged organs. It designs antibodies that neutralize mediators driving fibrotic activity with the aim of halting and reversing fibrosis to improve patient outcomes. Founded in 2019 and based in Cambridge, Massachusetts, the company targets key fibrotic mediator proteins to address late-stage disease with precision and efficacy.

Pandion Therapeutics

Series B in 2020
Pandion Therapeutics, Inc. is a clinical-stage biopharmaceutical company based in Watertown, Massachusetts, focused on developing innovative therapeutics for patients with autoimmune diseases. The company’s lead product candidate, PT101, is an engineered interleukin-2 variant currently undergoing Phase 1a clinical trials for various autoimmune and inflammatory conditions, including moderate-to-severe ulcerative colitis and systemic lupus erythematosus. In addition to PT101, Pandion's pipeline includes PT627, a systemic PD-1 agonist in preclinical studies, and two bifunctional molecules, PT001 and PT002, designed to provide tissue-selective immunomodulation by targeting specific adhesion molecules in the gastrointestinal tract. Pandion employs a network-based approach to immune system conceptualization through its TALON drug design platform and collaborates with Astellas Pharma to develop locally acting immunomodulators for pancreatic autoimmune diseases. The company aims to create a new generation of therapeutics that offer enhanced efficacy and safety for the treatment of autoimmune and inflammatory diseases.

Nocion Therapeutics

Series A in 2019
Nocion Therapeutics is a biopharmaceutical company developing novel therapies called 'nocions' that selectively target actively firing nociceptors to provide relief for serious conditions such as cough, itch, pain, and inflammation.

Alessa Therapeutics

Venture Round in 2019
Alessa Therapeutics, Inc. is a pre-clinical stage biotechnology company based in San Francisco, California, focused on developing localized treatments for solid organ diseases. Founded in 2018, the company specializes in a drug delivery implantable system specifically designed to treat prostate cancer. This innovative system allows for the sustained and localized administration of anti-androgen drugs directly to the tumor in the prostate, minimizing systemic exposure and enhancing treatment efficacy. By concentrating on localized therapies, Alessa Therapeutics aims to improve patient outcomes in the management of various organ diseases.

Telo Therapeutics

Venture Round in 2019
Telo Therapeutics is a biotechnology company focused on developing innovative cancer therapeutics aimed at reversing cancer cell immortality. The company employs a precision medicine approach to target telomerase, an enzyme that cancer cells utilize during the immortalization process. By inhibiting this enzyme, Telo Therapeutics seeks to leave healthy cells unscathed while improving treatment outcomes for patients who have exhausted other options. Through its unique platform, the company aspires to enhance survival and well-being in cancer patients, ultimately contributing to more effective treatment strategies and potential cures for various forms of cancer.

Principia Biopharma

Venture Round in 2018
Principia Biopharma Inc. is a late-stage biopharmaceutical company headquartered in South San Francisco, California, focused on developing innovative therapies for immune-mediated diseases. The company's lead product, rilzabrutinib, is an inhibitor undergoing Phase III clinical trials for pemphigus and pemphigus foliaceus, as well as Phase 1/2 trials for immune thrombocytopenia and Phase 2 trials for IgG4-related disease. Additionally, Principia is developing PRN2246/SAR442168, which is in Phase II for multiple sclerosis and other central nervous system conditions, alongside PRN473, a drug candidate in Phase I trials for immune-mediated diseases. Principia Biopharma maintains a collaboration agreement with Genzyme Corporation for the development of treatments for MS and other CNS diseases. Originally incorporated in 2008, the company is dedicated to addressing significant unmet medical needs in immunology and oncology through its innovative drug development platform.

Alector

Series E in 2018
Alector, Inc. is a clinical-stage biopharmaceutical company focused on developing novel therapies for neurodegenerative diseases, including Alzheimer’s disease and frontotemporal dementia. Founded in 2013 and headquartered in South San Francisco, California, the company utilizes advanced antibody technology and insights from neuroimmunology and human genetics to create innovative treatments. Alector’s pipeline includes several candidates, such as AL001, which is undergoing phase II clinical trials for frontotemporal dementia, and AL101, currently in phase I trials for Alzheimer's and Parkinson's diseases. Additionally, AL002 and AL003 are in phase 1b trials for Alzheimer’s disease. The company is actively engaged in research and development, with a total of ten programs at various stages. Alector has formed a strategic collaboration with Adimab, LLC to enhance its antibody research and development capabilities, aiming to efficiently generate and validate antibody drugs that target key disease-related mechanisms.

Avexegen Therapeutics

Venture Round in 2018
Avexegen Therapeutics Inc. is a development stage biotechnology company based in San Diego, California, founded in 2014. The company specializes in creating innovative therapies aimed at healing damaged and inflamed gut tissue in patients suffering from gastrointestinal disorders, particularly Crohn's disease and ulcerative colitis. Additionally, Avexegen focuses on addressing needs in premature infants with necrotizing enterocolitis. By employing a novel approach to treatment, Avexegen aims to improve the long-term health outcomes of patients with these serious conditions.

True North Therapeutics

Venture Round in 2018
True North Therapeutics is a biotechnology company based in South San Francisco, California, founded in 2013 as a spin-out of iPierian. The company focuses on developing therapies that target the classical pathway of the immune system's complement system to address rare diseases with high unmet clinical needs. Its lead product, TNT009, is a monoclonal antibody designed to selectively inhibit the classical complement pathway, aiming to treat conditions such as cold agglutinin disease, warm autoimmune hemolytic anemia, antibody-mediated rejection, bullous pemphigoid, and other rare diseases in hematologic, kidney transplant, dermatology, and neurological spaces. True North Therapeutics was acquired by Bioverativ Inc.

Epiodyne

Venture Round in 2017
Epiodyne, Inc. is a biotechnology company based in San Francisco, California, focused on developing innovative drugs derived from novel chemical matter and targeting delta opioid receptors. Founded in 2016, the company employs quantitative pharmacological and behavioral methodologies to translate its research insights into new therapeutic options. Epiodyne specializes in creating analgesics aimed at addressing neurobehavioral symptoms associated with brain disorders. By targeting the brain's opioid peptide system, Epiodyne seeks to restore the function of the brain's reward system, providing effective treatments for conditions such as compulsivity, self-injury, and addiction.

Mitokinin

Series A in 2017
Mitokinin, Inc. is a biotechnology company based in New York, focused on developing small molecule therapeutics aimed at treating neurodegenerative diseases, particularly Parkinson's disease. The company specializes in medicinal chemistry to create kinetin analogs that optimize the activation of PINK1, a protein involved in cellular health. Mitokinin's compounds are designed to enhance the activity of active-form PINK1 without interfering with its natural regulation. Founded in 2017, the company comprises a team of neuroscientists, chemists, and pharmacologists dedicated to advancing disease-modifying therapies in the healthcare sector.

Atreca

Series B in 2017
Atreca is a biopharmaceutical company that discovers and develops antibody-based immunotherapeutics for various solid tumor types. Its lead product candidate, ATRC-101, is a monoclonal antibody with a novel mechanism of action and target derived from its proprietary discovery platform.

Effector Therapeutics

Series C in 2017
eFFECTOR Therapeutics, Inc. is a clinical-stage biotechnology company based in San Diego, California, that specializes in the development of selective translation regulators for the treatment of cancer and other serious diseases. Founded in 2012, the company is pioneering a new class of oncology drugs known as selective translation regulator inhibitors (STRIs). These drug candidates specifically target the eIF4F complex and its associated kinase, MNK 1/2, which play critical roles in protein synthesis and are linked to prominent cancer signaling pathways such as PI3K-AKT and RAS-MEK. eFFECTOR's products aim to inhibit pathways that drive tumor growth, survival, and immune evasion by regulating the expression of oncoproteins and immunosuppressive proteins. The lead candidate, tomivosertib, is currently being evaluated in a Phase 2b trial for non-small cell lung cancer in combination with pembrolizumab. Additionally, zotatifin, an inhibitor of eIF4A, is undergoing dose-escalation in a Phase 1/2 trial, with further expansion cohorts anticipated. The company also collaborates with Pfizer to advance inhibitors targeting eIF4E.

Vivace Therapeutics

Series B in 2017
Founded in 2014, Vivace Therapeutics is a biotechnology company based in the San Francisco Bay Area. It focuses on discovering and developing cancer therapeutics by targeting novel pathways, with a particular emphasis on the Hippo pathway which controls tissue regeneration and organ size.

Redwood Bioscience

Venture Round in 2017
Redwood Bioscience is a biotechnology company focused on precision protein-chemical engineering to develop optimized biotherapeutics. Established in 2008 and based in Emeryville, California, the company specializes in site-specific modification technology, which addresses the challenges of conjugating biologics with synthetic molecules. This innovative approach enables the creation of homogeneous hybrid biotherapeutics, enhancing the effectiveness of treatments. Redwood Bioscience's methods for optimizing drug conjugates leverage the binding specificity and extended half-life of biologic carriers while incorporating the potency advantages of small molecules and synthetic peptides, positioning the company at the forefront of advancements in antibody-drug conjugates and semi-synthetic biotherapeutics.

Circle Pharma

Series A in 2017
Circle Pharma, Inc. is an early-stage biotechnology company based in South San Francisco, California, founded in 2012 by Matt Jacobson and Scott Lokey. The company specializes in developing cell-permeable macrocyclic peptide therapeutics aimed at critical clinical targets. It employs proprietary computational design algorithms and innovative synthetic chemistry to create first-in-class macrocycle therapies that can be administered through various routes, including oral delivery. Circle Pharma's platform utilizes structure-based rational drug design and an iterative process to generate large virtual libraries of diverse macrocycle scaffolds, which are selected for their permeability. This approach enables the company to address challenging targets, particularly in the context of intracellular protein-protein interactions that play a significant role in cancer, thereby fulfilling unmet clinical needs. The company is led by David J. Earp.

SiteOne Therapeutics

Series B in 2017
SiteOne Therapeutics is a San Francisco-based company developing innovative therapeutics and diagnostics for acute and chronic pain. Their lead candidates are selective inhibitors of the Naᵥ1.7 ion channel, aiming to treat pain safely and effectively without relying on NSAIDs or opioids.
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