At Ipsen we believe in advancing science with purpose. With our unique size and specialized expertise, we accelerate innovation navigating development and regulatory pathways to bring transformational new medicines to patients around the world.
We bring innovation where people have the fewest options

Oncology
At Ipsen, we pioneer treatments in cancer, advancing bold science where patients have few or no options.
Rare Disease
At Ipsen, we are breaking new ground in rare bone and liver diseases, delivering solutions that modify the course of rare diseases and improve the often-debilitating symptoms that impact daily life.
Neuroscience
At Ipsen we are pushing the boundaries of science to bring the benefits patients are looking for, as we believe everyone deserves a life fully lived.
R&D in brief
Our R&D teams endeavor to develop innovative therapeutic solutions in our three therapeutic areas. We do this by leveraging an entrepreneurial, collaborative approach to build a sustainable portfolio and bring treatments to patients worldwide.
Bold investment
€687m invested in R&D in 2024, powering over 30 innovative programs from early discovery to commercialization.
Firepower to sustain innovation
We are dedicating >€5bn firepower to identify and collaborate with external innovators in the development of new assets
Focusing where it matters most
Delivering best- or first-in-class medicines in rare and niche areas of oncology, neuroscience, and rare diseases, we accelerate breakthroughs that reach patients worldwide.
R&D strategy
We build and sustain a science-led portfolio by balancing licensing, acquisitions, and internal R&D. In 2024, we added 8 new assets to our pipeline at every stage of development across our three therapeutic areas.
End-to-end expertise
Ipsen execute across all stages and geographies, leveraging our global footprint, end-to-end capabilities, and scalable operations that flex to portfolio needs.
Bringing our pipeline to patients
Innovation isn’t true innovation until it reaches patients; we currently have around 2,000 patients across 800 sites in ongoing clinical programs.
Data-driven future
We prioritize a data-driven approach to accelerate everything – from early development through to regulatory approval – using insights to guide our decisions, advance our medicines, and shape a better future for patients.
Meet the team
Discover the people driving R&D at Ipsen, advancing science with purpose all the way from discovery to patient impact.
Glossary
Defining some key terms in our science stories
Antibody-drug conjugates (ADCs) are a class of targeted cancer therapies that combine the precision of monoclonal antibodies with the potent cell-killing ability of cytotoxic drugs.
Designed to selectively deliver chemotherapy agents to cancer cells while sparing healthy tissues, ADCs help minimize side effects and improve treatment efficacy. Despite their advancements, many ADCs face challenges in balancing effectiveness with a manageable safety profile.
An agonist is a drug or molecule that activates a receptor in the body, triggering a response.
An antibody binds to a specific antigen, typically a disease-related protein like a cancer marker – working like a lock and key. A monoclonal antibody is an engineered antibody designed for therapeutic use.
If a pathway or receptor plays a role in a disease, we can inhibit or block it to reduce its activity and achieve a therapeutic effect.
The MAPK cell pathway, also referred to as MAP-kinase, plays a key role in regulating cell growth, differentiation and proliferation. Mutations in the chain of proteins that make up the pathway can result in hyperactivation—the pathway gets stuck ‘on’.
Uncontrolled cell proliferation signals can result in oncogenesis, where healthy cells become transformed into cancer cells.
A novel therapeutic approach that represents a distinct way of treating disease – it introduces a fundamentally different mechanism or treatment strategy than existing options.
The liver plays a vital role in overall health, including bile production, which aids digestion and waste removal. Bile flows through a network of ducts to the small intestine or is stored in the gallbladder. Most bile acids are then reabsorbed and returned to the liver, maintaining the body’s bile acid balance.
Rare cholestatic liver diseases (‘cholestasis’ means impaired bile flow) occur when the balance is disrupted, leading to bile acid accumulation, toxicity, intense itching (pruritus), and liver damage. This can stem from genetic mutations, autoimmune responses, or structural abnormalities, shaping their progression in both pediatric and adult patients. Our focus is on five rare liver diseases: ALGS, BA, PBC, PFIC, and PSC.
A molecule inside or on a cell that detects signals from the body or drugs, triggering a specific response.
Therapies can guide drugs directly to diseased cells or enhance the body’s own immune response.
T cell engagers (TCEs) are a class of immunotherapy designed to harness the immune system – specifically T cells – to recognize and destroy cancer cells.
These engineered antibodies act as molecular bridges, binding to a tumor-associated antigen on cancer cells and a T cell protein, triggering a targeted immune attack. Once activated, T cells release cytotoxic enzymes, leading to cancer cell death and amplifying the body’s immune response.
TCEs offer a versatile and potent approach to cancer treatment, yet existing therapies face challenges such as treatment resistance and off-target effects.
Our Partnerships
At Ipsen, we believe that partnerships create possibilities. We seek to build partnerships that boost our capacity to improve or extend the lives of people living with cancer, rare diseases, and neurological conditions.
Learn moreClinical Trials
Our global network of healthcare professionals, together with volunteers and patients, helps us test medicines and ensure their effectiveness and safety in clinical trials before new treatments can be approved and made widely available.’ To ‘Our global network of healthcare professionals, together with healthy participants and patients, helps us test medicines and ensure their effectiveness and safety in clinical trials before new treatments can be approved and made widely available.
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