Next-generation therapeutics for obesity and its continuum of cardiometabolic diseases

Rivus Pharmaceuticals, Inc. is dedicated to improving cardiometabolic health by advancing a new class of investigational medicines called controlled metabolic accelerators (CMAs). These oral small molecules are designed to reduce excess fat and treat a broad range of cardiometabolic diseases by safely leveraging the natural process of mitochondrial uncoupling. Activating this metabolic process results in fat-specific weight loss, preservation of muscle mass, reduction of liver and visceral fat, improved glycemic control and reductions in oxidative stress and inflammation.

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Rivus Pharmaceuticals, Inc. is dedicated to improving cardiometabolic health by advancing a new class of investigational medicines called controlled metabolic accelerators (CMAs). These oral small molecules are designed to reduce excess fat and treat a broad range of cardiometabolic diseases by safely leveraging the natural process of mitochondrial uncoupling. Activating this metabolic process results in fat-specific weight loss, preservation of muscle mass, reduction of liver and visceral fat, improved glycemic control and reductions in oxidative stress and inflammation.

OUR SCIENCE

Addressing a primary driver of cardiometabolic disease: obesity

Nearly half of American adults are living with cardiometabolic diseases. While numerous factors contribute to these diseases, a common thread driving pathology is obesity, the result of excess fat in the body. Associated with an elevated risk of heart failure, type 2 diabetes, dyslipidemia, MASLD/MASH and other indications, obesity presents an opportunity to target a significant risk factor for cardiometabolic disease. Newer therapies support weight loss but may also reduce lean muscle mass, which can lead to weight regain and increased cardiovascular risk.

Harnessing a natural metabolic process for fat selective weight loss

Controlled Metabolic Accelerators (CMAs) are oral small molecules which are designed to reduce excess fat and treat a broad range of cardiometabolic diseases by safely leveraging the natural process of mitochondrial uncoupling. Mitochondrial uncoupling accounts for approximately 20-40% of caloric consumption and significantly contributes to basal metabolic rate. Rivus’ CMAs provide a novel, measured approach to activating this process, reducing fat throughout the body while preserving skeletal muscle mass.

Watch Rivus CSO Shaharyar Khan, PhD, explain how CMAs differ from current obesity treatments.

Watch video

Harnessing a natural metabolic process for fat selective weight loss

Controlled Metabolic Accelerators (CMAs) are oral small molecules which are designed to reduce excess fat and treat a broad range of cardiometabolic diseases by safely leveraging the natural process of mitochondrial uncoupling. Mitochondrial uncoupling accounts for approximately 20-40% of caloric consumption and significantly contributes to basal metabolic rate. Rivus’ CMAs provide a novel, measured approach to activating this process, reducing fat throughout the body while preserving skeletal muscle mass.

Leveraging the powerhouse of the cell to achieve better health

By harnessing the natural mechanism of mitochondrial uncoupling, Rivus’ therapies accelerate metabolism with the aim of enabling healthy lives for millions.

IMPROVE CELLULAR METABOLISM

Controlled metabolic accelerators (CMAs) like HU6 are oral, small molecule therapies designed to improve cellular metabolism. CMAs harness a natural metabolic process in mitochondria, the powerhouse of cells, to increase the breakdown of fats and sugars and increase resting energy expenditure.

REDUCE FAT, PRESERVE MUSCLE

By increasing energy expenditure, CMAs decrease fat throughout the body while maintaining skeletal muscle mass. Muscle retention is critical to minimize fat regain and reduce cardiometabolic risk.

CLINICAL OPPORTUNITY

In a Phase 2 clinical trial, HU6, a first-in-class CMA, was shown to improve disease markers of blood pressure, inflammation and glycemic control. CMAs are now being studied to treat obesity and its comorbidities for patients suffering from heart failure, MASLD/MASH and type 2 diabetes.

OUR PIPELINE

CMAs have the potential to provide well-tolerated, effective treatments that improve cardiometabolic health with applicability to a broad range of diseases.

Clinical research demonstrates the potential of Rivus’ lead candidate HU6, a first-in-class CMA, to address a broad range of cardiometabolic diseases by increasing fat selective weight loss and improving key markers of glycemic control and inflammation. Importantly, no loss of lean muscle mass has been observed, suggesting reduced risk of weight regain and reduced cardiovascular risk.

For its lead program HU6, Rivus Pharmaceuticals has completed Phase 1 clinical studies and a Phase 2a metabolic study, which was published in The Lancet Gastroenterology & Hepatology. Building on data from the metabolic study, results from a Phase 2a study in patients with obese heart failure with preserved ejection fraction (HFpEF) were published in JAMA Cardiology. In addition, Rivus has completed dosing in a Phase 2 study in patients with metabolic dysfunction-associated steatohepatitis (MASH). Rivus is expanding its pipeline of CMAs targeting diseases where the evidence for safe metabolic acceleration is strong and the therapeutic need is great.

RIVUS CONTROLLED METABOLIC ACCELERATOR PIPELINE

Target Indication
Candidate/Target
Preclinical
Phase I
Phase II
Phase III
Obese HFpEF, MASH, T2D, Obesity
HU6
ANT-Activator
Obesity, CVD
RV-200
ANT-Activator
Obesity
RV-300
GLP1R / ANT-Activator
Target Indication
Candidate/Target
Phase
Obese HFpEF, MASH, T2D, Obesity
HU6
ANT-activator
Phase II
Obesity, CVD
RV-200
ANT-activator
Preclinical
Obesity
RV-300
GLP1R / ANT-Activator
Preclinical

HFpEF – heart failure with preserved ejection fraction; MASH – metabolic dysfunction-associated steatohepatitis; T2D – type 2 diabetes; CVD – cardiovascular disease; ANT – adenine nucleotide translocase; GLP1R – glucagon-like peptide 1 receptor

Clinical Data and Scientific Publications

Safety and efficacy of once-daily HU6 versus placebo in people with non-alcoholic fatty liver disease and high BMI: a randomised, double-blind, placebo-controlled, phase 2a trial
The Lancet Gastroenterology & Hepatology 2023
Noureddin, Mazen, et al.

VIEW

A Novel Controlled Metabolic Accelerator for the Treatment of Obesity-Related HFpEF: Rationale and Design of the Phase 2a HuMAIN Trial
European Journal of Heart Failure 2024
Kitzman, W., Dalane, et al.

VIEW

Novel Controlled Metabolic Accelerator for Obesity-Related HFpEF: The HuMAIN-HFpEF Randomized Clinical Trial
JAMA Cardiology 2025
Pandey, Ambarish, et al.

VIEW

Clinical Data Presentations

HuMAIN HU6 Phase 2a Obesity-Related HFpEF Clinical Trial
Pandey, Ambarish, et al.
Presented by Rivus CMO Rob Schott

VIEW

Relevant Literature

Mitochondrial Uncoupling and Weight Loss

Beyond appetite regulation: Targeting energy expenditure, fat oxidation, and lean mass preservation for sustainable weight loss
Obesity 2021
Christoffersen, Berit, et al.

VIEW

Implications of mitochondrial uncoupling in skeletal muscle in the development and treatment of obesity
The Federation of European Biochemical Societies Journal 2013
Thrush, Brianne A., et al.

VIEW

Mitochondrial uncoupling as a target for drug development for the treatment of obesity
Obesity Reviews 2001
Harper, J. A., et al.

VIEW

Mitochondrial uncoupling attenuates sarcopenic obesity by enhancing skeletal muscle mitophagy and quality control
Journal of Cachexia, Sarcopenia and Muscle 2022
Dantas, Wagner S., et al.

VIEW

Therapeutic Benefits of Mitochondrial Uncouplers Beyond Weight Loss

Small Molecule Mitochondrial Uncouplers and Their Therapeutic Potential
Journal of Medicinal Chemistry 2018
Childress, Elizabeth S., et al.

VIEW

Therapeutic potential of mitochondrial uncouplers for the treatment of metabolic associated fatty liver disease and NASH
Molecular Metabolism 2021
Goedeke, Leigh, et Shulman, Gerald I.

VIEW

Controlled-release mitochondrial protonophore reverses diabetes and steatohepatitis in rats
Science (AAAS) 2015
Perry, Rachel J., et al.

VIEW

Neuroprotective Potential of Mild Uncoupling in Mitochondria. Pros and Cons
Brain Sciences 2021
Zorov, Dmitry B., et al.

VIEW

Mitochondrial Dysfunction and Disease

Mitochondrial dysfunction in vascular endothelial cells and its role in atherosclerosis
Frontiers in Physiology 2022
Qu, Kai, et al.

VIEW

Mitochondrial Dysfunction: The Hidden Player in the Pathogenesis of Atherosclerosis?
International Journal of Molecular Sciences 2023
Ciccarelli, Giovanni, et al.

VIEW

Nitric oxide deficiency is a primary driver of hypertension
Biochemical Pharmacology 2022
Bryan, Nathan S.

VIEW

Oxidative capacity in failing hearts
American Journal of Physiology 2003
Gong, Guangrong, et al.

VIEW

Mitochondrial Function and Longevity

Further Support to the Uncoupling-to-Survive Theory: The Genetic Variation of Human UCP Genes Is Associated with Longevity
PLOS One 2011
Giuseppina, Rose, et al.

VIEW

Cellular energetics and mitochondrial uncoupling in canine aging
GeroScience 2019
Nicholatos, Justin W., et al.

VIEW

Mild mitochondrial uncoupling in mice affects energy metabolism, redox balance and longevity
Aging Cell 2008
Caldeira da Silva, Camille C., et al.

VIEW

Mitochondrial Mechanics and Energy Metabolism

Use the Protonmotive Force: Mitochondrial Uncoupling and Reactive Oxygen Species
Journal of Molecular Biology 2018
Berry, Brandon J., et al.

VIEW

Mitochondrial uncouplers induce proton leak by activating AAC and UCP1
Nature 2022
Bertholet, Ambre M., et al.

VIEW

Increased substrate oxidation and mitochondrial uncoupling in skeletal muscle of endurance-trained individuals
Proceedings of the National Academy of Sciences of the United States of America 2008
Befroy, Douglas E., et al.

VIEW

The Obesity Phenotype of HFpEF

Evidence Supporting the Existence of a Distinct Obese Phenotype of Heart Failure With Preserved Ejection Fraction
Circulation 2017
Obokata, Masaru, et al.

VIEW

The HFpEF Obesity Phenotype: The Elephant in the Room
Journal of the American College of Cardiology 2016
Kitzman, Dalane W., et al.

VIEW

Clinical Trials

For more information on any Rivus-sponsored clinical trials, please contact our clinical operations team at info@rivuspharma.com.

Expanded Access Policy

EXPANDED ACCESS TO INVESTIGATIONAL MEDICINES

At this time, Rivus Pharmaceuticals does not provide access to investigational products outside of clinical trials. We encourage patients to participate in clinical trials of our investigational therapies whenever possible. Clinical trials are designed, conducted, and monitored to ensure that the safety and efficacy are appropriately evaluated before they are submitted to regulatory agencies for review with the intent to make them more broadly available to patients.

Our Team

The Rivus team is a group of forward-thinking scientists and proven biotech leaders deeply committed to the field of cardiometabolic health. Our team of experts is driven to provide patients and physicians with a new and highly effective solution to one of the most challenging issues in healthcare today.

Allen Cunningham
Allen Cunningham
Chief Executive Officer
Allen Cunningham
Allen Cunningham
Chief Executive Officer

With more than 20 years of experience developing early-stage and venture-backed companies in the biotechnology, information technology, and renewable energy sectors, Allen Cunningham is a co-founder and Chief Executive Officer at Rivus. Mr. Cunningham has expertise in many aspects of early-stage company development, including operations management, intellectual property, product development, licensing and distribution, mergers and acquisition, and finance. Prior to Rivus, he co-founded and served as the Chief Executive Officer of Gencia Biotech. Mr. Cunningham graduated from the University of Virginia with a B.A. in English.

David Grainger, Ph.D.
Chairman of Development
David Grainger, Ph.D.
Chairman of Development

David Grainger, Ph.D. is a widely regarded scientist and life sciences entrepreneur who brings more than 30 years of experience in drug discovery and development to his role as Chairman of Development at Rivus. He is a co-founder and partner at the leading European venture capital firm Medicxi, spearheading their investment into Padlock Therapeutics (acquired by Bristol-Myers Squibb), Z Factor and Morphogen-IX (which became part of Centessa Pharmaceuticals) and Rivus Pharmaceuticals, where he has served as an advisor to the board of directors since 2019. Additionally, Dr. Grainger served as Chief Innovation Officer at Centessa for almost three years.

Dr. Grainger started his career as a Principal Investigator in the Department of Medicine at Cambridge University in the United Kingdom, where he led an internationally-recognized research group and published more than 80 first author papers in leading journals including Nature, Science and Nature Medicine. He has founded more than 30 biotech companies, including Functional Therapeutics, (acquired by Boehringer Ingelheim), XO1 (acquired by Janssen Pharmaceuticals) and the out-sourced drug developers Total Scientific and RxCelerate. He has over 150 patents and patent applications in his name, and holds an M.A. and Ph.D. in natural sciences from the University of Cambridge.

Robert Schott, M.D.
Chief Medical Officer
Robert Schott, M.D.
Chief Medical Officer

Robert Schott, M.D., adds deep experience in clinical development to the Rivus executive team in his role as Chief Medical Officer, including expertise in advancing mRNA therapeutics and gene and cell therapies across diverse indications. He joined the company from Nutcracker Therapeutics, where he served as Chief Medical Officer, and before that, was a Senior Vice President and Head of Development at Sangamo Therapeutics. Dr. Schott was also previously at Eli Lilly for nearly seven years, most recently serving as Chief Medical Officer for Chorus, the autonomous early-phase drug development group inside of Lilly. Dr. Schott earned a B.S. in Biomedicine from the University of Michigan, an M.D. from the University of Michigan Medical School and an M.P.H. in epidemiology from the University of Michigan School of Public Health. He completed an internal medicine residency at the University of Michigan Hospitals and a fellowship in cardiology at Massachusetts General Hospital.

Shaharyar Khan
Shaharyar Khan, Ph.D.
Chief Scientific Officer
Shaharyar Khan
Shaharyar Khan, Ph.D.
Chief Scientific Officer

Shaharyar Khan, Ph.D., is an expert in the field of mitochondrial biology and has dedicated his career to the pursuit of novel mitochondrial therapeutics. As Rivus’ co-founder and Chief Scientific Officer, Dr. Khan contributes more than two decades of experience managing multidisciplinary teams of talented mitochondrial biologists, computational and medicinal chemists, and clinicians. Prior to his role at Rivus, he co-founded Gencia Biotech, where he also served as Chief Scientific Officer, and pioneered multiple drug discovery programs, including large and small molecules, aimed at harnessing the unique role of mitochondria in the maintenance of cellular health. He earned a B.A. in philosophy from the University of Virginia and holds a Ph.D. in neuroscience from the University of Virginia.

Meg Fitzgerald, J.D.
Chief Legal Officer
Meg Fitzgerald, J.D.
Chief Legal Officer

Meg brings more than 20 years of experience in the biopharmaceutical industry to her role as Chief Legal Officer at Rivus. Most recently, she held the position of Chief Legal and Compliance Officer at Codexis, Inc., following her role as Chief Compliance Officer and General Counsel at Allakos, Inc. Prior to her time at Allakos, Meg was Privacy Officer and Associate General Counsel at Aimmune Therapeutics, Inc. Previously, she served as Vice President of Corporate Law at ZS Pharma, Inc., playing a key role in negotiations that resulted in the $2.7 billion sale of ZS Pharma to AstraZeneca. Earlier in her career, Ms. Fitzgerald held increasingly senior leadership roles at Genentech, Inc., ultimately serving as Associate General Counsel and Director of Transactional Law. Ms. Fitzgerald also served as an Associate Attorney at Pillsbury Winthrop Shaw Pittman. She earned a B.A. and an M.A. from Stanford University and a J.D. from the University of California, Berkeley.

Francisco Portell
Francisco Portell
VP, Pharmaceutical Development
Francisco Portell
Francisco Portell
VP, Pharmaceutical Development

With more than 20 years of research experience in mitochondrial biology, Francisco Portell brings significant expertise in advancing multiple drug discovery programs involving both large and small molecules to his role as co-founder and Vice President, Pharmaceutical Development at Rivus. As a co-founder and prior Senior Scientist at Gencia Biotech, he led the biologics development program and partnering efforts with industry experts on bacterial genetics, fermentation, tangential flow filtration, chromatography and formulation. Prior to Gencia, Mr. Portell worked at the University of Virginia Center for Neurodegeneration researching mitochondrial dysfunction in Alzheimer’s and Parkinson’s disease.

Ian F. Smith
Chairman of the Board
Ian F. Smith
Chairman of the Board

Ian F. Smith serves as a senior advisor to Bain Capital Life Sciences and previously held executive positions at Vertex Pharmaceuticals. In addition to serving as the chairman of the board of Rivus, he is Executive Chairman and a member of the board of directors of Solid Biosciences, as well as board member to several other private and public biotechnology companies, including: Foghorn Therapeutics, Stoke Therapeutics, Alkeus Pharmaceuticals, and iVexSol Inc. Previously, he was Executive Chair and member of the board of directors of ViaCyte, Inc. He received a B.A. with honors in accounting and finance from Manchester Metropolitan University in the United Kingdom.

Francesco De Rubertis
Francesco De Rubertis, Ph.D.
Director
Francesco De Rubertis
Francesco De Rubertis, Ph.D.
Director

Francesco De Rubertis, Ph.D., is a co-founder and partner at Medicxi. Prior to that, he was a partner at Index Ventures, having joined the firm to launch its life sciences practice. Dr. De Rubertis also serves as a member of the board of directors of Centessa Pharmaceuticals plc, Synox Therapeutics, and Levicept. His prior investments include CellZome, GenMab, GenSight Biologics, Micromet, Minerva Neurosciences, Molecular Partners, PanGenetics, Parallele Biosciences, Profibrix and Versartis. Dr. De Rubertis received a B.A. in genetics and microbiology from the University of Pavia in Italy and a Ph.D. in molecular biology from the University of Geneva in Switzerland, after which he became a postdoctoral scientist at the Whitehead Institute at the Massachusetts Institute of Technology. He is a chartered financial analyst.

Derek DiRocco
Director
Derek DiRocco
Director

Derek DiRocco is a partner at RA Capital Management, where he works on both public and private investments. He serves as a member of the board of directors for multiple private and public biotech companies, including Mineralys Therapeutics, Inc., Acrivon Therapeutics, Inc., Werewolf Therapeutics Inc. and 89bio, Inc. He earned a B.A. in biology from College of the Holy Cross and a Ph.D. in pharmacology from the University of Washington. He conducted postdoctoral research at Brigham and Women’s Hospital/Harvard Medical School, where he researched the role of the Wnt signaling pathway in mouse models of kidney disease and was part of a team that discovered a stem cell subtype responsible for solid organ fibrosis.

Erin Lavelle
Director
Erin Lavelle
Director

Erin Lavelle has more than 25 years of strategic and operational leadership experience in the biopharmaceutical industry. She most recently served as Chief Operating Officer and Chief Financial Officer at ProfoundBio, where she led a $112 million Series B financing round and negotiated a $1.8 billion sale to Genmab. Prior to ProfoundBio, she was the Chief Operating Officer/Chief Financial Officer at Eliem Therapeutics, where she was instrumental in orchestrating Eliem’s initial public offering. Before Eliem, she was the Chief Operating Officer at Alder Biopharmaceuticals, Inc., where she led the company’s nearly $2 billion acquisition by H. Lundbeck A/S. Her extensive tenure in the biopharmaceutical sector also includes 15 years at Amgen, culminating as General Manager of Amgen’s Taiwan affiliate, and including positions where she spearheaded commercial excellence and digital health initiatives and was involved in global marketing, global commercial finance and strategy & corporate development. Ms. Lavelle began her career as an investment banker in the healthcare group at Merrill Lynch & Co. She served on the boards of Neoleukin and Vitaeris. She earned a B.A. in economics from Yale University.

Rick E Winningham
Director
Rick E Winningham
Director

Rick E Winningham serves as Chairman and Chief Executive Officer of Theravance Biopharma, Inc. Prior to that, he held leadership positions at Theravance, Inc. (now Innoviva, Inc.). He began his career at Bristol Myers Squibb and its predecessor Bristol Myers, where he held various U.S. and global management positions, culminating in his role as President of the Oncology/Immunology/Oncology Therapeutics Network and President of Global Marketing, overseeing a range of therapeutic areas. Mr. Winningham was previously a director at the California Healthcare Institute (CHI) until its merger with BayBio, creating the California Life Sciences Association (CLSA). He chaired CHI and served on CLSA’s board, including as its Chairman. He is a member of the board of directors for the Biotechnology Industry Organization (BIO), where he serves on the Health Section Governing Board Standing Committee on Reimbursement, and a member of the board of directors of Jazz Pharmaceuticals plc. He previously served as a board member of Retrotope Inc. and OncoMed Pharmaceuticals, Inc. Mr. Winningham earned a B.S. from Southern Illinois University and an M.B.A from Texas Christian University.

Allen Cunningham
Allen Cunningham
Director & CEO
Allen Cunningham
Allen Cunningham
Director & CEO

With more than 20 years of experience developing early-stage and venture-backed companies in the biotechnology, information technology, and renewable energy sectors, Allen Cunningham is a co-founder and Chief Executive Officer at Rivus. Mr. Cunningham has expertise in many aspects of early-stage company development, including operations management, intellectual property, product development, licensing and distribution, mergers and acquisition, and finance. Prior to Rivus, he co-founded and served as the Chief Executive Officer of Gencia Biotech. Mr. Cunningham graduated from the University of Virginia with a B.A. in English.

Shaharyar Khan
Shaharyar Khan, Ph.D.
Director & CSO
Shaharyar Khan
Shaharyar Khan, Ph.D.
Director & CSO

Shaharyar Khan, Ph.D., is an expert in the field of mitochondrial biology and has dedicated his career to the pursuit of novel mitochondrial therapeutics. As Rivus’ co-founder and Chief Scientific Officer, Dr. Khan contributes more than two decades of experience managing multidisciplinary teams of talented mitochondrial biologists, computational and medicinal chemists, and clinicians. Prior to his role at Rivus, he co-founded Gencia Biotech, where he also served as Chief Scientific Officer, and pioneered multiple drug discovery programs, including large and small molecules, aimed at harnessing the unique role of mitochondria in the maintenance of cellular health. He earned a B.A. in philosophy from the University of Virginia and holds a Ph.D. in neuroscience from the University of Virginia.

CAREERS

Join the Rivus Pharmaceuticals team

Rivus has offices in South San Francisco, California and Charlottesville, Virginia and is seeking candidates to join our growing team as we expand our pipeline of controlled metabolic accelerators (CMAs).

NEWS

Learn more about Rivus and controlled metabolic accelerators (CMAs).

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info@rivuspharma.com

CONTACT US

For general inquiries please e-mail us at info@rivuspharma.com.