Clinical trials

This study is researching an experimental drug called ALN-ANG3 (called "study drug"). The study is focused on participants who have diabetic kidney disease. The aim of the study is to see how safe and effective the study drugs are. The study is looking at several other research questions, including: * What side effects may happen from taking the study drug * How much study drug is in the blood at different times

This study is researching a drug called linvoseltamab (also called "study drug") either given alone or in combination with another anti-myeloma drug called carfilzomib, compared to several standard treatments for progressive Multiple Myeloma (MM) after at least 1 but no more than 3 prior therapies. The aim of this study is to see if the safety and efficacy of linvoseltamab alone or in combination with carfilzomib can deliver better outcomes (deeper and longer responses that help extend life) than standard treatment options. The study is looking at several other research questions, including: * What side effects may happen from taking the study drug * How much study drug is in the blood at different times * Whether the body makes antibodies against the study drug (which could make the drug less effective or could lead to side effects)

This study is researching experimental drugs called REGN7508 and REGN9933. The study is focused on participants who have atrial fibrillation, which means that the heart beats too fast and unevenly. REGN7508 and REGN9933 are designed to help stop blood clots forming in patients with atrial fibrillation. The aim of the study is to see how well REGN7508 and REGN9933 work in patients that get medicine for their atrial fibrillation. The bleeding effects of REGN7508 and REGN9933 will be compared to another medicine (apixaban), which is available on the market to treat and prevent formation of blood clots. The study is looking at several other research questions, including: * What side effects may happen from taking REGN7508 or REGN9933 * How well do the study drugs reduce the risk of having a stroke * How much of REGN7508 or REGN9933 is in the blood at different times * Whether the body makes antibodies against REGN7508 or REGN9933 (which could make the drugs less effective or could lead to side effects)

Provide compassionate use of odronextamab

Provide access to REGN-EB3 for the treatment of patients with Ebola Virus Disease (EVD).

This study is researching an experimental drug called REGN7508 (called "study drug") and how it compares against another treatment called apixaban. The study is focused on people who have atrial fibrillation, which means that the heart beats too fast and unevenly. The aim of the study is to see how safe and effective REGN7508 is in preventing stroke and/or systemic embolism in participants with atrial fibrillation and how it compares against participants that will receive apixaban in this study. The study is looking at several other research questions, including: * What side effects may happen from taking the study drug * Whether the body makes antibodies against the study drug (which could make the study drug less effective or could lead to side effects)

This study will test a study medicine called REGN20423 to see how effective it is in healthy participants (in Part A) and participants with atopic dermatitis (eczema) (in Part B). REGN20423 is a study medicine that is only used in clinical studies. REGN20423 has not previously been studied in humans. The study is looking at: * What side effects REGN20423 might cause * How much REGN20423 is in the blood at different times * How well REGN20423 works in adults with atopic dermatitis * Whether the body makes antibodies against REGN20423 * How the body changes after having REGN20423, which can help researchers understand why REGN20423 works better in some people than others * What the best dose of REGN20423 is

This study is researching an experimental drug called linvoseltamab (also called "study drug") compared to another drug called daratumumab, in participants with Smoldering Multiple Myeloma (SMM), who are at a High Risk (HR) of developing active multiple myeloma. The aim of this study is to find out whether linvoseltamab is better than daratumumab in delaying the development of MM. The study is looking at several other research questions, including: * What side effects may happen from taking the study drug * How much study drug is in the blood at different times * Whether the body makes antibodies against the study drug (which could make the drug less effective or could lead to side effects)

This study is researching an experimental drug called REGN7508 (called "study drug") and how it compares against another treatment called Acetylsalicylic Acid (ASA). The study is focused on adults undergoing elective, unilateral (one side) total knee replacement surgery. The aim of the study is to see how effective the study drug is at preventing Venous Thromboembolism (VTE) and other related diseases after total knee replacement surgery compared to acetylsalicylic acid. The study is looking at several other research questions, including: * What side effects may happen from taking the study drug * How much study drug is in the blood at different times * Whether the body makes antibodies against the study drug (which could make the study drug less effective or could lead to side effects)

This study is researching an experimental drug called REGN7508 (called "study drug"). The study is focused on adults undergoing elective, unilateral (one side) total knee replacement surgery. The aim of the study is to see how effective the study drug is at preventing Venous Thromboembolism (VTE) and other related diseases after total knee replacement surgery. The study is looking at several other research questions, including: * What side effects may happen from taking the study drug * How much study drug is in the blood at different times * Whether the body makes antibodies against the study drug (which could make the study drug less effective or could lead to side effects)

Participants in this study have a genetic mutation, specifically in the coagulation (blood clotting) Factor 9 gene that causes severe or moderately severe hemophilia B. This study is researching an experimental gene insertion therapy (the adding of a gene into your DNA) called REGV131-LNP1265, also called the "study drug". Gene insertion therapy aims to teach the body how to produce clotting factor long-term, without the need for factor replacement therapy. The main aim of this study is to find a safe and well-tolerated dose of the study drug by checking the side effects that may happen from taking it, both in the near term and over time. The study is looking at several other research questions including: * How much study drug is in the blood at different times * Whether the body makes antibodies against parts of the study drug, which could make the drug less effective or could lead to side effects. Antibodies are proteins produced by the body's immune system in response to a foreign substance * Whether the body makes antibodies against the clotting factor replacement therapy * How often factor replacement therapy is needed, both on a regular basis for prevention of bleeding, and as needed to treat bleeding events (and it if changes after taking study drug) * Whether there is a difference in 2 different methods for measuring Factor 9 activity in the blood

This study is researching an experimental drug called fianlimab (also known as REGN3767), combined with another medication called cemiplimab (also known as REGN2810), called "study drugs". The study is focused on patients with a type of skin cancer known as melanoma. The aim of the study is to see how safe and effective the combination of fianlimab and cemiplimab is in treating melanoma, in comparison with the combination of two medications, relatlimab and nivolumab, commercialized under the brand name Opdualag™ and approved for the treatment of melanoma in adults and children. The study is looking at several other research questions, including: * What side effects may happen from taking the study drugs. * How much study drug is in the blood at different times. * Whether the body makes antibodies against the study drugs (which could make the drug less effective or could lead to side effects)

This study is researching an experimental drug called odronextamab (referred to as study drug), in combination with lenalidomide. The study is focused on participants who have one of two types of cancer: Follicular Lymphoma (FL) or Marginal Zone Lymphoma (MZL) that has come back after treatment (called "relapsed") or did not respond to treatment (called "refractory"). FL and MZL are subtypes of Non-Hodgkin 's Lymphoma (NHL). This study will be made up of two parts (Part 1 not randomized, Part 2 randomized - controlled). The aim of Part 1 of the study is to see how safe and tolerable the study drug is when used in combination with lenalidomide, in participants with FL or MZL, and to determine the dose of the study drug to be used in Part 2 of this study. This combination is considered "first-in-human" as it has not been tested as a combination treatment in humans before. The aim of Part 2, of the study is to assess how well the combination of the study drug and lenalidomide works compared to the combination of rituximab (called "the comparator drug") and lenalidomide. The combination of comparator drug and lenalidomide is the current standard-of-care treatment for relapsed/refractory FL and/or MZL. Standard-of-care means the usual medication expected and used when receiving treatment for a condition. The study is looking at several other research questions, including: * What side effects may happen from taking the study drug in combination with lenalidomide * How much study drug is in the blood at different times * Whether the body makes antibodies against the study drug (which could make the study drug less effective or could lead to side effects) * The impact from the study drug on quality-of-life and ability to complete routine daily activities

This study is researching an experimental drug called odronextamab, referred to as study drug, when used in combination with chemotherapy. The study is focused on patients with Diffuse Large B-cell Lymphoma (DLBCL) that have not been treated before (called "previously untreated"). Patients with DLBCL that have come back after treatment (called "relapsed"), or have not responded to treatment (called "refractory"), can also participate in this study. This study will be made up of Part 1A, Part 1B, and Part 2.The aim of Part 1A and Part 1B of the study is to see how safe and tolerable the study drug in combination with chemotherapy is and to determine the dose and schedule of the study drug to be combined with chemotherapy in Part 2 of the study. The aim of Part 2 of the study is to see how effective the combination of the study drug with chemotherapy is in comparison with the combination of rituximab (the comparator drug), and chemotherapy, the current standard of care treatment approved for DLBCL. Standard of care means the usual medication expected and used when receiving treatment for a condition. The study is looking at several other research questions, including: * What side effects may happen from taking the study drug when combined with chemotherapy * How much study drug is in the blood at different times * Whether the body makes antibodies against the study drug (which could make the study drug less effective or could lead to side effects) * The impact from the study drug on quality of life and ability to complete routine daily activities

This study is researching an experimental drug called linvoseltamab, also called REGN5458. Linvoseltamab has previously been studied by itself (without other cancer drugs) in participants who had advanced multiple myeloma that returned and needed to be treated again after many other therapies had failed. These participants were no longer benefiting from standard medications and had no good treatment options. In that study, some participants who were treated with linvoseltamab had improvement of their myeloma (shrinkage of their tumors), including some participants who had complete responses (that is, the treatment got rid of all evidence of myeloma in their bodies). This study is focused on participants who have multiple myeloma that has returned or needs to be treated again after one to four prior treatments and have standard cancer treatment options available to them. The aim of this study is to see how safe and effective linvoseltamab is compared to a combination of three cancer drugs: elotuzumab, pomalidomide and dexamethasone, (called EPd) in participants who have returned after having received prior treatment that included lenalidomide, a proteosome inhibitor, and (for participants in some countries) a cluster of differentiation 38 (CD38) antibody. Half of the participants in this study will get linvoseltamab, and the other half will get EPd. This study is looking at several other research questions, including: * How long participants benefit from receiving linvoseltamab compared with EPd * How many participants treated with linvoseltamab or EPd have improvement of their multiple myeloma and by how much * What side effects happen from taking linvoseltamab compared to EPd * How long participants live while receiving treatment or after treatment with linvoseltamab compared to EPd * If there is any improvement in pain after treatment with linvoseltamab compared to EPd

This study is researching an investigational drug, ALN-HSD called "study drug". This study is focused on participants who are known to have Metabolic dysfunction-Associated SteatoHepatitis (MASH). MASH is a form of Metabolic dysfunction-Associated Steatotic Liver Disease (MASLD). MASH occurs when fat builds up in liver cells, damaging them, and making the liver inflamed and stiff from fibrosis (scar tissue). MASH can progress to cirrhosis (long term scarring) and liver failure (when the liver cannot perform its job). The aim of the study is to see the effect of the study drug on lessening liver scarring related to MASH. The study is looking at several other research questions, including: * How ALN-HSD works to improve liver function and lessen MASH-related inflammation in the liver * What side effects may happen from receiving the study drug * How much study drug and study drug metabolites (byproduct of the body breaking down the study drug) are in the blood at different times * Better understanding of the study drug and MASH

This study is researching an experimental drug called garetosmab, referred to as "study drug". The study is focused on children and adolescent participants with FOP. For United States: Ages 4 to less than 18 years; for non-US sites only: Ages 2 to less than 18 years. The aim of the study is to see how safe, tolerable, and effective the study drug is. The study is looking at several other research questions, including: * What side effects may happen from taking the study drug * How much study drug is in the blood at different times * Whether the body makes antibodies against the study drug (which could make the study drug less effective or could lead to side effects)

This study is researching an experimental drug called odronextamab, referred to as study drug. The study is focused on participants with previously untreated follicular lymphoma (a type of non-Hodgkin lymphoma or NHL). This study will be made up of two parts: Part 1 (non-randomized) and Part 2 (randomized - controlled). The aim of Part 1 of the study is to see how safe and tolerable the study drug is when given alone. The aim of Part 2 of the study is to see how the study drug works compared to rituximab (called the "comparator drug") and chemotherapy (the current standard of care for NHL). Standard of care means the usual medication expected and used when receiving treatment for a condition. The study is looking at several other research questions, including: * What side effects may happen from taking the study drug * How much study drug is in the blood at different times * Whether the body makes antibodies against the study drug (which could make the study drug less effective or could lead to side effects) * How the study drug affects quality of life and ability to complete routine daily activities.

This study will test a Regeneron drug called REGN13089-M404-M2980 ("study drug") to see if it can help treat previously treated, advanced solid tumors (tumors that have grown and spread to different areas of the body). The study is focused on advanced cancers that have more of a protein called mesenchymal epithelial transition factor (MET) on the surface of their cells than usual. The study drug works by binding to MET on tumor cells and delivering chemotherapy directly into those cells. This may stop growth of the cancer cells and kill only the cancer cells and not the other normal tissues in your body. However, some of the chemotherapy may still affect the normal cells and side effects can still occur. The study is looking at: * What side effects the study drug might cause * How well the study drug works * How much of the study drug is in the blood at different times * If the body reacts to the study drug, in a way that may cause the study drug to not work as well * What is the best dose of the study drug for treating previously treated, advanced solid tumors

This study will evaluate three Investigational Medicinal Products (IMPs) called REGN9933, REGN7508, and REGN9533. The study is focused on participants with End-Stage Kidney Disease (ESKD) treated with hemodialysis and standard anticoagulant treatment, such as heparin, to reduce the risk of blood clots as they can lead to serious health problems or be life-threatening. Because participants with ESKD who have hemodialysis have a higher risk of bleeding, the IMPs could be a meaningful new therapeutic option. The main aim of the study is to see what side effects may happen from taking REGN9933, REGN7508, or REGN9533. The study is looking at several other research questions, including: * How much IMP is in the blood at different times and * If the IMPs affect the ability of the blood to clot normally

This study will test an experimental Regeneron drug called REGN24493 hereby referred to as "study drug" to see if it can help treat Graves' disease. Graves' disease is a condition where the immune system causes the thyroid gland to make too much thyroid hormone. The main purpose of this study is to learn about the safety of REGN24493 and what side effects it might cause. The study is looking at: * What side effects REGN24493 might cause * How much REGN24493 is in the blood at different times * How REGN24493 affects thyroid hormone levels * If the body reacts to REGN24493 in a way that could affect participant's health * What is the best dose of REGN24493 for treating Graves' disease

This study will test a Regeneron study drug called ALN-CIDEB to find out whether it may help treat a liver disease called metabolic dysfunction-associated steatohepatitis (MASH). MASH is more advanced stage of a broader liver disease, MASLD. MASLD is a liver condition caused by too much fat building up in the liver. This can lead to liver scarring and inflammation and can reduce the liver's ability to keep the body healthy. Cell death-inducing DFFA-like effector B (CIDEB) is a protein made by liver cells that helps the liver to store fat. The study is looking at: * What side effects ALN-CIDEB might cause * How well ALN-CIDEB works to change liver fat, liver injury, and liver scarring * How ALN-CIDEB could affect the body and the liver, which can help researchers understand why ALN-CIDEB works better for some people than others

This study will test an experimental drug called olatorepatide ("study drug") to determine how safe and effective this drug is compared to placebo and how easily the body can accept this drug at different doses and dosing schedules without causing side effects, as well as how the drug is processed in the body by participants with overweight or obesity but do not have diabetes. The study is looking at: * What side effects the study drug might cause * How much study drug is in the blood at different times * How well the study drug works * What effects the study drug may have on the body at different dosing schedules * If the body makes antibodies to the study drug as this may cause the study drug to not work as well

This study will test a study drug called ALN-PNP with and without another drug that is used for controlling blood sugar, appetite, and weight (for example, tirzepatide), to see if it can help treat MASLD, also known as fatty liver disease. ALN-PNP reduces the amount of Patatin-like phospholipase domain-containing protein 3 (PNPLA3), a protein that liver cells make, which may help decrease liver fat if there is an abnormal PNPLA3 protein. The goal of this study is to understand the effect of ALN-PNP with or without tirzepatide on reducing liver fat. The study is looking at: * How well ALN-PNP with and without tirzepatide works * What side effects ALN-PNP might cause * How much ALN-PNP is in the blood at different times * How the body and the liver change after having ALN-PNP, which can help researchers understand why ALN-PNP works better in some people than others

This study is researching an experimental drug called mibavademab (also called "study drug"). The study is focused on participants with a condition called Functional Hypothalamic Amenorrhea (FHA). FHA is a condition where a woman stops menstruating because the brain is not sending the correct hormonal signals to the ovaries, which then are not able to cycle and ovulate properly. The aim of the study is to see how well the study drug helps the body make the hormones necessary for ovulation and reproduction, and to assess its safety. The study is looking at several other research questions, including: * Whether the drug helps bone health * What side effects may happen from taking the study drug * How much study drug is in the blood at different times * Whether the body makes antibodies against the study drug (which could make the study drug less effective or could lead to side effects)