MRL Ventures Fund

MRL Ventures Fund, established in 2015 and based in Cambridge, Massachusetts, is an independent venture capital investment group affiliated with Merck Research Laboratories, the research and development division of Merck & Co., Inc. The fund focuses on creating and investing in seed and early-stage therapeutics companies that are grounded in translatable breakthrough science. MRL Ventures aims to support the development of innovative medicines that can significantly enhance human health.

Olga Danilchanka

Principal

Peter Dudek

President

Justin Feng

Senior Associate

Karin Kleinhans

Partner

Jason Ruth

Partner

Jason Ruth

Partner

38 past transactions

Ray Therapeutics

Series A in 2023
Ray Therapeutics is a company focused on developing innovative optogenetic gene therapies aimed at treating patients with blinding diseases. By creating technology that enhances the understanding of rare retinal conditions, the company strives to empower healthcare professionals to effectively diagnose, cure, and manage inherited retinal diseases. Through its commitment to advancing optogenetics, Ray Therapeutics seeks to improve the quality of life for those affected by these debilitating conditions.

Anavo Therapeutics

Seed Round in 2023
Anavo Therapeutics is pioneering the systematic drugging of phosphatases, a target area that has long been deemed undruggable. The company focuses on developing first-in-class therapeutic programs, particularly in oncology, leveraging its expertise in phosphatase-driven disease biology and drug discovery. Anavo aims to create a diverse pipeline of therapeutics across various indications by fostering strategic partnerships and collaborations. Through this innovative approach, Anavo seeks to unlock the potential of phosphatase-targeted allosteric modulators, advancing the field of targeted therapies in medicine.

Carisma Therapeutics

Series C in 2022
Carisma Therapeutics is a biotechnology company based in Philadelphia, Pennsylvania, focused on developing innovative cellular immunotherapies for the treatment of solid tumors. Founded in 2016, the company specializes in engineering chimeric antigen receptor (CAR) macrophages and monocytes, which are types of white blood cells that play a crucial role in the immune response. By harnessing advances in macrophage biology and adoptive cell transfer, Carisma aims to enhance cancer therapies, allowing for more effective treatment options for patients with solid tumors. The company is in the clinical stage of development, working to translate its proprietary technology into transformative therapies for various serious diseases.

LifeMine

Series C in 2022
LifeMine Therapeutics, Inc. is a biotechnology company focused on discovering new drug modalities from eukaryotic microbes, particularly fungi. Founded in 2016 and headquartered in Cambridge, Massachusetts, with an additional office in New York, the company employs an integrated, genomically-enabled drug discovery platform that combines genomics, artificial intelligence, and synthetic biology. LifeMine aims to elucidate human biology and develop innovative therapeutics that target the underlying causes of serious diseases. By mining fungal biodiversity, the company seeks to create novel therapeutics designed to tackle previously intractable medical challenges, ultimately enhancing treatment options for healthcare providers.

Eyebiotech

Series A in 2022
Eyebiotech is a privately held ophthalmology biotechnology company working to deliver a new generation of therapies for eye diseases.

AmbAgon Therapeutics

Series A in 2022
AmbAgon Therapeutics is a developer of cancer molecule therapeutics. The company offers research of a small molecule that augments a tumor-suppressing protein. AmbAgon Therapeutics was founded by Christian Ottmann, Lucas Brunsveld, and Michelle Arkin.

Mozart Therapeutics

Series A in 2021
Developer of disease-modifying therapies designed to focus on developing novel immune engagers. The company offers CD8 T-cell immune modulators for the treatment of autoimmune diseases as well as it specifically targets a subset of t-lymphocytes to delay the onset and ameliorate targeted autoimmune diseases, enabling doctors to administer state-of-the-art drugs for treating autoimmune disorders in patients.

PAQ Therapeutics

Series A in 2021
PAQ Therapeutics is a biotechnology company focused on restoring health and curing diseases by harnessing autophagy, the body's natural process for cellular degradation. The company develops a novel class of small-molecule degraders using autophagosome-tethering compound technology. This innovative approach allows these compounds to bind a diverse array of substrates to the autophagy pathway, enabling healthcare providers to create effective treatments for serious diseases where traditional therapeutic options are often limited. Through its research and development efforts, PAQ Therapeutics aims to provide new solutions for patients in need of advanced medical therapies.

Therini Bio

Seed Round in 2021
Therini Bio is dedicated to the research and development of novel therapeutics for the treatment of neurological diseases. The company's approach is based on novel findings by the Akassoglou lab at Gladstone/UCSF that implicate fibrin as a key driver of neuroinflammation.

Entrada Therapeutics

Series B in 2021
Entrada Therapeutics, Inc., a biotechnology company, engages in the treatment of diseases through the intracellular delivery of biologic. The company enables intracellular delivery of proteins, peptides, and nucleic acids and allows development of programs across intracellular target classes. Its Intracellular enzyme replacement therapy (IC-ERT) is a medical treatment that corrects an enzyme deficiency in the cell, Protein-Protein Interaction Inhibitors. The company was founded in 2016 and is based in Boston, Massachusetts.

Carisma Therapeutics

Series B in 2021
Carisma Therapeutics is a biotechnology company based in Philadelphia, Pennsylvania, focused on developing innovative cellular immunotherapies for the treatment of solid tumors. Founded in 2016, the company specializes in engineering chimeric antigen receptor (CAR) macrophages and monocytes, which are types of white blood cells that play a crucial role in the immune response. By harnessing advances in macrophage biology and adoptive cell transfer, Carisma aims to enhance cancer therapies, allowing for more effective treatment options for patients with solid tumors. The company is in the clinical stage of development, working to translate its proprietary technology into transformative therapies for various serious diseases.

Xilio Therapeutics

Series C in 2021
Xilio Therapeutics is a biotechnology company advancing next-generation cancer immunotherapies designed to improve patient outcomes by unleashing the power of the immune system selectively at the site of the tumor. The company’s tumor-selective immunotherapies are based on its proprietary technology, which maximizes the potency of proven immuno-oncology therapies and restricts their activity to the tumor to minimize peripheral side effects. The broad applicability of these therapies across cancer types means that all patients could benefit from these potentially curative medicines. These tumor-selective therapies are designed to overcome the significant toxicities associated with validated IO therapies, such as IL-2 and aCTLA4, which have historically limited the number of patients that can be treated and prevented patients from completing full courses of treatment Xilio Therapeutics proprietary technology enables the explosion of therapeutic activity specifically within the tumor while reducing toxicity throughout the body a nod to the company name, Xilio, derived from the Latin term, Ex Nihilo, meaning creation or big-bang. The company applying its technology to build a broad pipeline of engineered antibodies, cytokines and chemokines as potential new options for people living with cancer. Xilio Therapeutics was founded in 2016 and is headquartered in Waltham, Massachusetts, United States.

Carisma Therapeutics

Series B in 2021
Carisma Therapeutics is a biotechnology company based in Philadelphia, Pennsylvania, focused on developing innovative cellular immunotherapies for the treatment of solid tumors. Founded in 2016, the company specializes in engineering chimeric antigen receptor (CAR) macrophages and monocytes, which are types of white blood cells that play a crucial role in the immune response. By harnessing advances in macrophage biology and adoptive cell transfer, Carisma aims to enhance cancer therapies, allowing for more effective treatment options for patients with solid tumors. The company is in the clinical stage of development, working to translate its proprietary technology into transformative therapies for various serious diseases.

LifeMine

Series B in 2021
LifeMine Therapeutics, Inc. is a biotechnology company focused on discovering new drug modalities from eukaryotic microbes, particularly fungi. Founded in 2016 and headquartered in Cambridge, Massachusetts, with an additional office in New York, the company employs an integrated, genomically-enabled drug discovery platform that combines genomics, artificial intelligence, and synthetic biology. LifeMine aims to elucidate human biology and develop innovative therapeutics that target the underlying causes of serious diseases. By mining fungal biodiversity, the company seeks to create novel therapeutics designed to tackle previously intractable medical challenges, ultimately enhancing treatment options for healthcare providers.

Tallac Therapeutics

Series A in 2020
Tallac Therapeutics, Inc. develops immunotherapies for cancer patients. Tallac Therapeutics, Inc. was formerly known as Tollnine, Inc. The company was founded in 2018 and is based in Burlingame, California.

Imago BioSciences

Series C in 2020
Imago BioSciences is a clinical-stage biotechnology company based in San Carlos, California, focused on developing innovative therapies for hematologic diseases, including leukemia and myelodysplastic syndromes. Established in 2012, the company specializes in small molecule product candidates that target lysine-specific demethylase 1 (LSD1), an enzyme crucial for blood cell production in the bone marrow. Its lead candidate, Bomedemstat, is an orally available inhibitor of LSD1, being evaluated for its potential to modify the disease course in patients with myeloproliferative neoplasms, a group of chronic bone marrow cancers. Imago aims to translate advanced scientific insights into effective treatments that can significantly improve the quality and duration of life for patients facing these challenging conditions.

Lava Therapeutics

Series C in 2020
Lava Therapeutics B.V. is a biotechnology company based in Utrecht, the Netherlands, focused on developing innovative immune oncology biopharmaceuticals. Founded in 2016, the company specializes in a bispecific antibody platform designed to engage gamma-delta T cells, which play a crucial role in the immune response against cancer. Lava Therapeutics aims to create next-generation bispecific antibodies that not only activate and recruit the immune system but also enhance its ability to identify and eliminate tumor cells. The company's approach seeks to provide effective, safe, and cost-efficient treatments for both hematological and solid cancers, empowering healthcare professionals to better harness the body's immune capabilities in the fight against cancer.

HotSpot Therapeutics

Series B in 2020
HotSpot Therapeutics is a developer of a therapy platform designed to discover medicines and provide proper treatment. The company's platform helps to identify hotspots and locate pathway treatments for cancer, metabolic and rare diseases, leverages a database of hotspot structures, harnessing the power of data science in its multidisciplinary approach to drug discovery enabling patients to get treatment against several diseases.

Xilio Therapeutics

Series B in 2020
Xilio Therapeutics is a biotechnology company advancing next-generation cancer immunotherapies designed to improve patient outcomes by unleashing the power of the immune system selectively at the site of the tumor. The company’s tumor-selective immunotherapies are based on its proprietary technology, which maximizes the potency of proven immuno-oncology therapies and restricts their activity to the tumor to minimize peripheral side effects. The broad applicability of these therapies across cancer types means that all patients could benefit from these potentially curative medicines. These tumor-selective therapies are designed to overcome the significant toxicities associated with validated IO therapies, such as IL-2 and aCTLA4, which have historically limited the number of patients that can be treated and prevented patients from completing full courses of treatment Xilio Therapeutics proprietary technology enables the explosion of therapeutic activity specifically within the tumor while reducing toxicity throughout the body a nod to the company name, Xilio, derived from the Latin term, Ex Nihilo, meaning creation or big-bang. The company applying its technology to build a broad pipeline of engineered antibodies, cytokines and chemokines as potential new options for people living with cancer. Xilio Therapeutics was founded in 2016 and is headquartered in Waltham, Massachusetts, United States.

Caraway Therapeutics

Venture Round in 2020
Rheostat’s mission is to invent novel treatments for neurodegenerative disease through modulation of mitophagy and autophagy. They believe that the degradation of toxic cellular components, whether they are damaged organelles or aggregated proteins, is a fundamental node of biology. Mutations that impair these clearance pathways cause multiple neurodegenerative diseases, many of which are associated with cognitive impairment. They aim to leverage our understanding of these critical pathways to discover and develop novel small molecules that will restore cellular balance and treat neurodegenerative and rare diseases.

LabCentral

Corporate Round in 2019
LabCentral is a provider of business incubation and acceleration services aimed at supporting startup entrepreneurs in the life sciences sector. It offers essential resources such as mentorship, coaching, and collaborative workspaces to facilitate the growth of emerging companies. Additionally, LabCentral organizes promotional events that connect entrepreneurs with potential investors, fostering opportunities for funding and business development. The facility has attracted companies like Conkwest, Inc., which focuses on developing novel cell-based treatments for cancer and viral infections. Through its comprehensive support system, LabCentral plays a vital role in nurturing innovation and advancing research in the biotech field.

Imago BioSciences

Series B in 2019
Imago BioSciences is a clinical-stage biotechnology company based in San Carlos, California, focused on developing innovative therapies for hematologic diseases, including leukemia and myelodysplastic syndromes. Established in 2012, the company specializes in small molecule product candidates that target lysine-specific demethylase 1 (LSD1), an enzyme crucial for blood cell production in the bone marrow. Its lead candidate, Bomedemstat, is an orally available inhibitor of LSD1, being evaluated for its potential to modify the disease course in patients with myeloproliferative neoplasms, a group of chronic bone marrow cancers. Imago aims to translate advanced scientific insights into effective treatments that can significantly improve the quality and duration of life for patients facing these challenging conditions.

Entrada Therapeutics

Series A in 2018
Entrada Therapeutics, Inc., a biotechnology company, engages in the treatment of diseases through the intracellular delivery of biologic. The company enables intracellular delivery of proteins, peptides, and nucleic acids and allows development of programs across intracellular target classes. Its Intracellular enzyme replacement therapy (IC-ERT) is a medical treatment that corrects an enzyme deficiency in the cell, Protein-Protein Interaction Inhibitors. The company was founded in 2016 and is based in Boston, Massachusetts.

Caraway Therapeutics

Series A in 2018
Rheostat’s mission is to invent novel treatments for neurodegenerative disease through modulation of mitophagy and autophagy. They believe that the degradation of toxic cellular components, whether they are damaged organelles or aggregated proteins, is a fundamental node of biology. Mutations that impair these clearance pathways cause multiple neurodegenerative diseases, many of which are associated with cognitive impairment. They aim to leverage our understanding of these critical pathways to discover and develop novel small molecules that will restore cellular balance and treat neurodegenerative and rare diseases.

Kymera Therapeutics

Series B in 2018
Kymera Therapeutics is a biopharmaceutical company based in Watertown, Massachusetts, established in 2015. It specializes in targeted protein degradation, developing innovative small molecule therapeutics that selectively degrade proteins associated with various diseases by utilizing the body's natural protein degradation mechanisms. The company is advancing several therapeutic programs, including the IRAK4 program aimed at treating immunology-inflammation diseases such as hidradenitis suppurativa, atopic dermatitis, and rheumatoid arthritis. Additionally, it is developing the IRAKIMiD program for MYD88-mutated diffuse large B cell lymphoma and the STAT3 program for hematologic malignancies and solid tumors, as well as autoimmune diseases. Through its proprietary predictive modeling platform, Kymera Therapeutics seeks to accelerate drug discovery and address previously untreatable conditions.

Alector

Series E in 2018
Alector, Inc. is a clinical stage biopharmaceutical company focused on developing therapies for neurodegenerative diseases, including Alzheimer's and frontotemporal dementia. The company's lead product, AL001, is a humanized recombinant monoclonal antibody currently in phase II clinical trials for frontotemporal dementia. Additionally, AL101 is in phase I clinical trials for various neurodegenerative diseases, while AL002 and AL003 are undergoing phase 1b trials specifically for Alzheimer's disease. Alector is leveraging advancements in antibody technology, neuroimmunology, and human genetics to create innovative therapeutics. The company maintains a collaboration with Adimab, LLC, which aids in the discovery and optimization of antibody therapeutics. Alector has a pipeline of ten programs in the research and development stage and aims to advance several candidates through pre-clinical development within the next two years. Founded in 2013, Alector is headquartered in South San Francisco, California.

Carisma Therapeutics

Series A in 2018
Carisma Therapeutics is a biotechnology company based in Philadelphia, Pennsylvania, focused on developing innovative cellular immunotherapies for the treatment of solid tumors. Founded in 2016, the company specializes in engineering chimeric antigen receptor (CAR) macrophages and monocytes, which are types of white blood cells that play a crucial role in the immune response. By harnessing advances in macrophage biology and adoptive cell transfer, Carisma aims to enhance cancer therapies, allowing for more effective treatment options for patients with solid tumors. The company is in the clinical stage of development, working to translate its proprietary technology into transformative therapies for various serious diseases.

Visterra

Series C in 2017
Visterra, Inc. is a clinical-stage biopharmaceutical company focused on developing precision antibody-based treatments for difficult-to-treat diseases, particularly infectious diseases. Utilizing its Hierotope platform, Visterra designs monoclonal antibodies such as VIS410, aimed at treating hospitalized patients with influenza A, and VIS513 for Dengue fever. The company is also advancing VIS705, an antibody-drug conjugate for Pseudomonas aeruginosa infections, and VIS649, which targets Immunoglobulin A Nephropathy (IgAN). Founded in 2007 and based in Waltham, Massachusetts, Visterra was previously known as Parasol Therapeutics, Inc. The company operates as a subsidiary of Otsuka America, Inc. and emphasizes innovative therapeutic solutions to address significant unmet medical needs.

LifeMine

Series A in 2017
LifeMine Therapeutics, Inc. is a biotechnology company focused on discovering new drug modalities from eukaryotic microbes, particularly fungi. Founded in 2016 and headquartered in Cambridge, Massachusetts, with an additional office in New York, the company employs an integrated, genomically-enabled drug discovery platform that combines genomics, artificial intelligence, and synthetic biology. LifeMine aims to elucidate human biology and develop innovative therapeutics that target the underlying causes of serious diseases. By mining fungal biodiversity, the company seeks to create novel therapeutics designed to tackle previously intractable medical challenges, ultimately enhancing treatment options for healthcare providers.

Spero Therapeutics

Series C in 2017
Spero Therapeutics, a clinical-stage biopharmaceutical company based in Cambridge, Massachusetts, specializes in developing novel therapies for multi-drug resistant (MDR) bacterial infections and rare diseases. Its key product candidates include tebipenem pivoxil hydrobromide, an oral carbapenem-class antibiotic intended for adults with MDR Gram-negative infections, and SPR206, an intravenous agent targeting MDR Gram-negative infections in hospital settings. Additionally, the company is advancing SPR720, an oral antibiotic designed for treating pulmonary non-tuberculous mycobacterial disease. Spero Therapeutics has established various collaborations and license agreements to support the development and commercialization of its products, including partnerships with Meiji Seika Pharma, Everest Medicines, and the Bill & Melinda Gates Medical Research Institute. Founded in 2013, Spero aims to address the critical need for effective treatments against serious bacterial infections using innovative approaches and mechanisms.

Translate Bio

Series C in 2017
Translate Bio is a clinical-stage biotechnology company based in Lexington, Massachusetts, that focuses on developing messenger RNA (mRNA) therapeutics aimed at treating diseases linked to protein or gene dysfunction. Since its founding in 2011, the company has been working on innovative treatments, including MRT5005, which is currently undergoing Phase I/II clinical trials for cystic fibrosis, and MRT5201, intended for the treatment of ornithine transcarbamylase deficiency. Translate Bio aims to create transformative medicines that address unmet medical needs in rare diseases.

Spero Therapeutics

Series B in 2016
Spero Therapeutics, a clinical-stage biopharmaceutical company based in Cambridge, Massachusetts, specializes in developing novel therapies for multi-drug resistant (MDR) bacterial infections and rare diseases. Its key product candidates include tebipenem pivoxil hydrobromide, an oral carbapenem-class antibiotic intended for adults with MDR Gram-negative infections, and SPR206, an intravenous agent targeting MDR Gram-negative infections in hospital settings. Additionally, the company is advancing SPR720, an oral antibiotic designed for treating pulmonary non-tuberculous mycobacterial disease. Spero Therapeutics has established various collaborations and license agreements to support the development and commercialization of its products, including partnerships with Meiji Seika Pharma, Everest Medicines, and the Bill & Melinda Gates Medical Research Institute. Founded in 2013, Spero aims to address the critical need for effective treatments against serious bacterial infections using innovative approaches and mechanisms.

Alector

Series D in 2016
Alector, Inc. is a clinical stage biopharmaceutical company focused on developing therapies for neurodegenerative diseases, including Alzheimer's and frontotemporal dementia. The company's lead product, AL001, is a humanized recombinant monoclonal antibody currently in phase II clinical trials for frontotemporal dementia. Additionally, AL101 is in phase I clinical trials for various neurodegenerative diseases, while AL002 and AL003 are undergoing phase 1b trials specifically for Alzheimer's disease. Alector is leveraging advancements in antibody technology, neuroimmunology, and human genetics to create innovative therapeutics. The company maintains a collaboration with Adimab, LLC, which aids in the discovery and optimization of antibody therapeutics. Alector has a pipeline of ten programs in the research and development stage and aims to advance several candidates through pre-clinical development within the next two years. Founded in 2013, Alector is headquartered in South San Francisco, California.

Viridian Therapeutics

Series C in 2015
MiRagen is a biopharmaceutical company that discovers and develops innovative microRNA-targeting therapies to improve human health, specifically in disease areas of high unmet medical need. The company leverages in-house expertise in miRNA biology, oligonucleotide chemistry, and drug development to evaluate and advance best-in-class technologies and high-potential drug candidates for its own pipeline or in conjunction with strategic partners. The company was founded in 2007 and headquartered in Boulder, Colorado.

Viridian Therapeutics

Series C in 2015
MiRagen is a biopharmaceutical company that discovers and develops innovative microRNA-targeting therapies to improve human health, specifically in disease areas of high unmet medical need. The company leverages in-house expertise in miRNA biology, oligonucleotide chemistry, and drug development to evaluate and advance best-in-class technologies and high-potential drug candidates for its own pipeline or in conjunction with strategic partners. The company was founded in 2007 and headquartered in Boulder, Colorado.

Alector

Series C in 2015
Alector, Inc. is a clinical stage biopharmaceutical company focused on developing therapies for neurodegenerative diseases, including Alzheimer's and frontotemporal dementia. The company's lead product, AL001, is a humanized recombinant monoclonal antibody currently in phase II clinical trials for frontotemporal dementia. Additionally, AL101 is in phase I clinical trials for various neurodegenerative diseases, while AL002 and AL003 are undergoing phase 1b trials specifically for Alzheimer's disease. Alector is leveraging advancements in antibody technology, neuroimmunology, and human genetics to create innovative therapeutics. The company maintains a collaboration with Adimab, LLC, which aids in the discovery and optimization of antibody therapeutics. Alector has a pipeline of ten programs in the research and development stage and aims to advance several candidates through pre-clinical development within the next two years. Founded in 2013, Alector is headquartered in South San Francisco, California.

Translate Bio

Series B in 2015
Translate Bio is a clinical-stage biotechnology company based in Lexington, Massachusetts, that focuses on developing messenger RNA (mRNA) therapeutics aimed at treating diseases linked to protein or gene dysfunction. Since its founding in 2011, the company has been working on innovative treatments, including MRT5005, which is currently undergoing Phase I/II clinical trials for cystic fibrosis, and MRT5201, intended for the treatment of ornithine transcarbamylase deficiency. Translate Bio aims to create transformative medicines that address unmet medical needs in rare diseases.

Imago BioSciences

Series A in 2014
Imago BioSciences is a clinical-stage biotechnology company based in San Carlos, California, focused on developing innovative therapies for hematologic diseases, including leukemia and myelodysplastic syndromes. Established in 2012, the company specializes in small molecule product candidates that target lysine-specific demethylase 1 (LSD1), an enzyme crucial for blood cell production in the bone marrow. Its lead candidate, Bomedemstat, is an orally available inhibitor of LSD1, being evaluated for its potential to modify the disease course in patients with myeloproliferative neoplasms, a group of chronic bone marrow cancers. Imago aims to translate advanced scientific insights into effective treatments that can significantly improve the quality and duration of life for patients facing these challenging conditions.
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