Clinical trials

Central hypersomnia conditions are a group of sleeping disorders where the brain has trouble keeping a person awake during the day (called excessive daytime sleepiness or EDS). These conditions usually include narcolepsy (type 1 and 2) and idiopathic hypersomnia (IH). Narcolepsy type 1 (NT1) includes sudden muscle weakness while you stay awake, called cataplexy, often triggered by strong emotions. Narcolepsy type 2 (NT2) does not include cataplexy. People with narcolepsy typically feel refreshed by short naps. People with IH feel extremely sleepy during the day, and do not feel refreshed by sleep. Waking up from sleep is difficult. This is common in the morning and also when waking up from long naps. The study wants to learn about TAK-360 when taken over a long time period; this is called a long-term extension or LTE study. The main aim of this LTE study is to find out how well participants with NT1, NT2, and IH tolerate TAK-360 over a longer period (long-term tolerability) and to learn how safe TAK-360 is when given over a longer period of time (long-term safety). Participants who completed one of the TAK-360 parent studies can join this study if they meet the study rules. Parent studies include TAK-360-2001(NCT06952699), TAK-360-2002 (NCT06812078), or other TAK-360 studies that evaluate the TAK-360 medicine. All participants will receive TAK-360 in this study. They will either receive the same dose as they did in the parent study, or the closest dose available in this LTE study. Participants who received placebo (the placebo looks just like TAK-360 but does not have any medicine in it) in their parent study will receive one of the TAK-360 doses available in this study. Placebo will only be used to not reveal the dose of TAK-360 from parent studies to investigator, participants, and sponsor. Sponsor, investigators and participants will not know which TAK-360 dose was used in the LTE study as long as the parent study is ongoing. The participants will have to visit the clinic multiple times during this study.

The main aim of this study is to find out how well elritercept works in lowering the need for RBC transfusions. Other aims are to learn how well elritercept works in reducing the need for RBC transfusions over longer periods of time or in adults with high transfusion needs. The study will also check on how safe elritercept is and how well it is tolerated.

The main aim of this study is to learn how safe elritercept is and how well adults with anemia associated with lower-risk MDS tolerate treatment with different doses of elritercept. Other aims are to learn how safe elritercept is by looking at how many participants have MDS that worsens during the study and learn about the effects of elritercept on anemia linked to MDS. The study will also look to learn how elritercept affects the production of healthy RBCs.

Narcolepsy without cataplexy or Narcolepsy Type 2 (NT2) is a lifelong condition that makes people very sleepy during the day, regardless of how much sleep they get at night. People with NT2 may fall asleep suddenly, have trouble staying awake during the day, or may not be able to sleep well at night. They may have difficulty thinking clearly, paying attention, or remembering things, during the day. These symptoms can make daily activities like driving, working, or caring for their families challenging, impacting their quality of life. Orexin is a chemical made in the brain that helps keep a person awake and alert. TAK-360 acts like orexin. Previous studies have shown that medicines that act like orexin may keep people awake. The main aim of this study is to learn how safe TAK-360 is and how well adults with NT2 tolerate it. Researchers also want to find out if TAK-360 can help people with NT2 stay awake and determine the right dosage needed to do that. Participants will be randomly (by chance, like drawing names from a hat) assigned to get either TAK-360 or placebo in the treatment period. The placebo is a pill that looks just like TAK-360 but does not have any medicine in it. Using a placebo helps researchers learn about the real effect of the treatment.

Acute ischemic stroke (AIS) is a medical emergency that happens because of a sudden stop of blood flow to a part of the brain. This happens when a blood clot forms within the vessel (known as thrombotic occlusion) or a clot originating from somewhere else blocks a blood vessel (known as embolic occlusion). Strokes can cause serious health problems, death, and affect one's quality of life. To reduce long-term damage, it is important to restore blood flow to the brain as soon as possible. The main aim of this study is to check how safe TAK-755 is, and how well adults with AIS tolerate it. Other aims are to check how well TAK-755 helps participants to manage their everyday activities and to understand whether it helps reduce the seriousness of their stroke symptoms when compared to placebo. A placebo looks like TAK-755, but does not have any medicine in it, to make sure participants do not know which treatment they are taking. The participants will receive TAK-755 or placebo once; afterwards, their health will be monitored for about 3 months (90 days). All participants, regardless of their assignment to either TAK-755 or placebo, will receive the usual treatment for AIS as per the hospital's normal practice.

Vitiligo is a long-term autoimmune condition that causes the skin to lose its color. The body's germ-fighting system (immune system) mistakenly attacks the skin cells (melanocytes) which produce the pigment that gives the skin color (melanin). This leads to the formation of patches of skin with less or no pigment (depigmentation). These patches can occur anywhere on the body. In the nonsegmental form of vitiligo, similar patches occur on both sides of the body (symmetrical patches). The main aim of this study is to learn how safe zasocitinib is, how well it works and how well it is tolerated by adults with nonsegmental vitiligo. The participants will receive the study treatment (either zasocitinib or placebo) for up to 1 year (52 weeks). The placebo looks like the zasocitinib capsule but does not have any medicine in it. Participants who receive placebo at the beginning will change to zasocitinib after about 6 months. During the study, participants will visit their study clinic 11 times.

Immunoglobulin A nephropathy (IgAN) is a kidney condition. It happens when the body's immune system creates groups of proteins (called immune complexes) that build-up in the kidneys causing swelling (inflammation). Over time, this inflammation may lead to kidney damage and cause the kidneys to no longer work properly. The main aim of this study is to check how well mezagitamab changes protein levels in the urine (proteinuria) compared to placebo in adults with primary IgAN. A placebo looks like medicine but doesn't have any active ingredients in it. Other aims are to check how safe mezagitamab is and how well participants with primary IgAN can tolerate it compared to placebo, and to find out if and how well mezagitamab continues to maintain kidney function over the long term compared to placebo. Participants will be placed in 1 of the 2 treatment groups; the main group and the open-label group. In the main group, participants will be placed by chance in either the mezagitamab or placebo treatment group at a 2:1 ratio. This means that out of 3 participants, 2 will receive mezagitamab and 1 will receive placebo. Participants can be in the study for 2 years (104 weeks). Participants will receive study treatment for about half a year (22 weeks) and then be observed for the remainder of the study (about 1.5 years). During observation, participants will continue to have check-ups about every month. In the open-label group, a small number of participants who either have lower levels of protein in their urine or have kidneys that do not filter the blood well, will receive mezagitamab treatment. This will include participants who have previously received mezagitamab in another study, TAK-079-1006. Every participant will receive mezagitamab in the same way as those in the main group receiving mezagitamab. During the study, participants will visit their study clinic several times.

Ulcerative Colitis (UC) and Crohn's Disease (CD) are long-term conditions in the gut that can cause diarrhea, swelling (inflammation), bleeding from the anus, and belly pain. The main aim of this study is to check for how many participants with UC and CD signs and symptoms disappear after 3.5 months (14 weeks) of treatment with Vedolizumab (this is called remission). Participants will be treated with Vedolizumab for approximately 1 year (50 weeks). During the first 1.5 months (6 weeks), participants will receive Vedolizumab as an infusion in the vein (called intravenously). After this, participants will receive Vedolizumab as an injection under the skin (called subcutaneously) for the rest of the treatment. Participants for whom the treatment does not seem to work well after 3.5 months (14 weeks) will stop treatment with Vedolizumab and can change to another treatment and also there will be additional required visits at 6 months (26 weeks) and at 1 year (52 weeks). All participants will be checked again 4.5 months (18 weeks) after their last treatment with Vedolizumab. During the study, participants will visit their study clinic several times.

Palmoplantar psoriasis (PPPsO) is a type of psoriasis that affects the palms of hands and soles of the feet. It can cause red, thick, scaly patches, and it is often associated with pain and itching. These symptoms can make daily life hard and can have a bigger effect on quality of life than psoriasis in some other areas of the body. Treatment can also be difficult because the skin on the palms and soles is thick, so treatments put on the skin (topical treatments) may not work as well. The main aim of this study is to find out how well zasocitinib works in reducing the skin redness, thickening, scaling, as well as fissures (narrow, elongated tears) on palms and soles of adults. Other aims are to learn if zasocitinib reduces the surface area of psoriasis on the palms and soles in adults with mainly Palmoplantar psoriasis. The study is conducted in 2 parts with a possibility of continued treatment (long-term extension). In Part 1, participants will receive zasocitinib for 4 months (16 weeks). Participants who finish Part 1 may be able to continue to Part 2 if the study doctor thinks they would benefit. Participants who continue to Part 2, will keep taking zasocitinib until they have been treated for about 1 year (52 weeks). After that, participants may choose to keep taking zasocitinib for another year (52 weeks). Participants will be followed for about 1 month (4 weeks) after the end of treatment. During the study, participants will visit their study clinic 16 times.

Metastatic colorectal cancer or mCRC is a cancer that starts in the parts of the large intestine (the colon or rectum) and has already spread to other parts of the body. This cancer can be hard to treat because it can behave differently from one person to another. Over time, treatments may stop working, and side effects can build up. In later treatment stages, there are only a few standard medicine options available. Because of this, studies often look at both how long people live and how treatment affects quality of life. The main aim of this study is to see how long adults in Poland with mCRC live without their cancer getting worse (progression-free survival or PFS) when they receive fruquintinib after at least two previous treatments. Fruquintinib (TAK 113) is a medicine taken by mouth that is designed to slow tumor growth. Other aim is to find out how long adults in Poland with mCRC live while being treated with fruquintinib (overall survival or OS). The study also wants to record how fruquintinib is used in routine care in adults with mCRC in Poland (for example when treatment starts, changes in doses, and how long treatment continues). Another aim is to learn about people with mCRC, such as their medical history and past treatment as well as their quality of life while they are in the study. The study will look at data already existing in the participants' medical charts.

Primary immune thrombocytopenia (ITP) is a condition where the immune system mistakenly destroys platelets, which are cells that help stop bleeding. This leads to a lower number of platelets, making it easier to bruise or bleed. The main aim of this study is to check how safe mezagitamab is and how well it is tolerated by adults with chronic primary ITP, if given over a longer time. Other aims are to learn how effective treatment with mezagitamab is and how the body processes it (called pharmacokinetics or PK) over a longer time. Participants of the following previous mezagitamab studies will be invited to join this continuation study: TAK-079-3002 and TAK-079-1004. In this continuation study, participants will receive mezagitamab when certain protocol criteria are met. During the study, participants will visit their study clinic several times.

Polycythemia vera (PV) is a long-term condition in which the bone marrow makes too many red blood cells (RBCs). Bone marrow is the soft tissue inside the large bones where blood cells are made. When there are too many RBCs, called erythrocytosis, the blood can become thicker and move less easily through blood vessels and organs. This can raise the risk of blood clots (thrombosis) in veins or arteries. Sometimes, these clots can be life-threatening and may cause a stroke or heart attack. Treatment aims to keep the percentage of RBCs in the blood (hematocrit) in a safe range. For adults with PV, this means keeping the hematocrit below 45%. This helps lower the blood thickness and the risk of thrombosis. PV can also be linked to low iron levels (iron deficiency), because the body uses iron to make more RBCs. Many people with PV are treated with blood removal (phlebotomy) to lower RBC levels in the blood. This can worsen the iron deficiency, because each blood removal also takes iron out of the body. Rusfertide is a medicine that lowers the amount of iron available in the blood. It works like hepcidin, a natural hormone that helps control iron levels in the body. By limiting iron available for RBC production, rusfertide may help keep hematocrit below 45% and may improve symptoms. It may also reduce, or even remove, the need for phlebotomy in people. The main aim of this study is to check how well rusfertide works to lower the number of phlebotomies needed in Chinese adults with PV. Other aims are to understand how well rusfertide works to keep hematocrit levels under control and how safe it is. The study also wants to learn how rusfertide moves through the body (pharmacokinetics) and if it causes the body's defense system to react to it (immunogenicity). During the study, participants will receive rusfertide for up to 1 year (52 weeks) and will have to visit their study clinic several times. Blood samples will be taken several times during the study.

The main aim of this study is to learn about the effect of treatment with vedolizumab IV (vedolizumab) together with tofacitinib in adults with moderate and severe ulcerative colitis (UC). Another aim is to learn about treatment with Vedolizumab alone after the double treatment. All participants will receive vedolizumab together with tofacitinib for 8 weeks and will be checked for response. Participants who show a response to the treatment after 8 weeks will be treated with vedolizumab alone for an additional 44 weeks. Each participant will be followed up for at least 26 weeks after the last dose of vedolizumab.

The main aim of this study is to learn about the effect of treatment with vedolizumab IV (vedolizumab) together with adalimumab or vedolizumab (VDZ) together with ustekinumab (UST) in adults with moderate to severe Crohn's Disease, and the effect of treatment with vedolizumab alone, after the dual targeted treatment. The study is conducted in two parts. In Part A, participants will receive the dual targeted treatment (vedolizumab together with either adalimumab or ustekinumab). In part B, participants will receive vedolizumab only. Part B will include participants who responded to the treatment in Part A. Each participant will be followed up for at least 26 weeks after the last dose of treatment.

Psoriatic arthritis (PsA) is a chronic inflammatory disease that affects the joints and skin in people who have psoriasis (PsO). The main aim of the study is to know how well zasocitinib (TAK-279) works in participants with active PsA based on their previous experience with specific treatments. The participants will be treated with either zasocitinib, or placebo. Participants will be in the study for up to 60 weeks.

Psoriatic arthritis (PsA) is a chronic inflammatory disease that affects the joints and skin in people who have psoriasis (PsO). The main aim of the study is to know how well zasocitinib (TAK-279) works in participants with active PsA who have not previously been treated with biologic disease-modifying antirheumatic drugs. The participants will be treated with either zasocitinib, active comparator, or placebo. Participants will be in the study for up to 60 weeks.

Multiple myeloma is a cancer of the plasma cells in the bone marrow. The main aim of this study is to learn how well the Immune Globulin Infusion (human), 10 percentage (%) (IGI, 10%) can help prevent infections in participants with multiple myeloma receiving B-cell maturation antigen (BCMA) x cluster of differentiation 3 (CD3) directed bispecific antibody therapy. Participants will be randomly assigned to one of two groups: 1. Primary infection prevention group: They will receive IGI, 10% for 12 months. 2. Secondary infection prevention group: They will only receive IGI, 10% if they develop a serious infection during the 12 months study period. During the study, participants will visit their study clinic 15 times (for 4-week dosing interval) or 19 times (for 3-week dosing interval) and their total participation duration will be up to 14 months (including screening period approximately 8 weeks).

Primary immune thrombocytopenia (ITP) is a condition where the immune system mistakenly destroys platelets, which are cells that help stop bleeding. This leads to a low number of platelets, making it easier to bruise or bleed. The main aim of this study is to learn whether mezagitamab, when given just under the skin (subcutaneously \[SC\]), is effective in keeping the platelet count of adults with ITP stable when compared to a placebo. A placebo looks like medicine but doesn't have any active ingredients in it. The participants will be treated with mezagitamab for up to 6 months. During the study, participants will visit their study clinic several times. Participants who complete the TAK-079-3002 study or do not have any response to study treatment by week 16 (according to study criteria) will be given the opportunity to participate in a continuation study to receive open label mezagitamab (if they are eligible and the site is able to open the continuation study).

This study is a survey in Japan of Maribavir tablets used to treat participants with Cytomegalovirus (CMV) infection refractory to existing anti-CMV therapy in organ transplantation (including hematopoietic stem cell transplantation). The main aim of the study is to check if treatment with Maribavir can protect Japanese people against CMV infection, and to check side effect from the study treatment. The study sponsor will not be involved in how the participants are treated but will provide instructions on how the clinics will record what happens during the study. During the study, participants with CMV infection will take Maribavir tablets according to their clinic's standard practice. The study doctors will check for side effects from Maribavir tablets for 27 weeks.

This study is a retrospective database study in Japan to evaluate the safety of Immune Globulin Subcutaneous (Human), 20% Solution in participants with primary immunodeficiency disease (PID). This survey will conduct in use of medical database called PIDJ2.

This study is a survey in Japan of Susoctocog Alfa (Genetical Recombination) intravenous injection used to treat participants with bleeding events of acquired Haemophilia A (AHA). The study sponsor will not be involved in how the participants are treated but will provide instructions on how the clinics will record what happens during the study. The main aim of the study is to check for side effects related from Susoctocog Alfa (Genetical Recombination) intravenous injection and to check if Susoctocog Alfa (Genetical Recombination) intravenous injection improves bleeding events of AHA. During the study, participants with AHA will take Susoctocog Alfa (Genetical Recombination) intravenous injection according to their clinic's standard practice. The study doctors will check for side effects from Susoctocog Alfa (Genetical Recombination) intravenous injection for up to 90 days after the last dose of study drug or until discontinued (varied from participant to participant).

Polycythemia vera (PV) is a rare blood cancer in which the body makes too many red blood cells. This can make the blood thicker and may increase the risk of serious health problems such as blood clots. Many people with PV need regular phlebotomy, which is a procedure to remove blood, to help keep their hematocrit level under control. Hematocrit is the proportion of red blood cells in the blood. The main aim of this study is to evaluate whether rusfertide helps Japanese participants with PV keep their hematocrit under control and avoid the need for phlebotomy. All participants in this study will receive rusfertide. This study is open-label, which means both the participants and the study team will know what treatment is being given. Participants will be followed for up to about 244 weeks, including a screening period, a 52-week initial treatment period, a long-term extension period, and a 4-week safety follow-up period.

The main aim of this study is to find out how well elritercept works to improve anemia in participants with myelofibrosis (MF) who are taking ruxolitinib when compared to placebo. Other aims are to learn how elritercept improves anemia compared to placebo; to learn if elritercept reduces tiredness, improves symptoms related to MF, and helps participants do physical activities more easily. The study also aims to find out how elritercept affects the bone marrow, the spleen, and whether participants develop antibodies to the study drug. The study will also check how safe elritercept is compared to placebo, and if elritercept stays safe over a long period of time. Participants will receive study treatment for at least 9 months (36 weeks). After this period, participants who received placebo will have the option to switch to elritercept.

Congenital thrombotic thrombocytopenic purpura (cTTP) is a rare blood disorder that some people are born with. It is caused by inherited changes in the ADAMTS13 gene that reduce the body's ability to produce the ADAMTS13 enzyme. ADAMTS13 normally cleaves ultra-large multimers of a protein called von Willebrand factor (VWF). In cTTP, low ADAMTS13 activity allows these ultra-large VWF multimers to build up and promote blood clot formation in small blood vessels. These clots can restrict blood flow to vital organs and lead to serious complications. Recombinant ADAMTS13 (rADAMTS13) is a manufactured form of human ADAMTS13 designed to replace the missing enzyme and restore ADAMTS13 activity. This study aims to describe the impact of cTTP on participants before and after treatment with rADAMTS13. It will also evaluate participants' health outcomes after treatment and describe treatment patterns before and after rADAMTS13, including whether treatment was used to prevent or treat TTP episodes, how often it was given, the amount received, and others. In addition, the study will describe pregnancies and outcomes for the mother and baby before and during treatment with rADAMTS13. Only data already available in the medical records of the people who received rADAMTS13 through Takeda's early access program (EAP) for cTTP will be collected and reviewed in this study.

The main aim of the study is to evaluate how TAK-226 improves symptoms of transfusion-dependent anemia in Japanese patients with lower-risk myelodysplastic syndromes. The study consists of Screening Period (up to 6 weeks), Treatment Period, Safety Follow-Up Period (8 weeks), and Long-Term Follow-Up Period (5 years from the first dose of the study drug or 3 years after the last dose, whichever is longer). Participants of this study will be administered TAK-226 during Treatment Period. Subsequently, the participants will be monitored for side effects related to the study treatment during Safety Follow-Up Period and Long-Term Follow-Up Period. The approximate duration of participation for a participant is up to approximately 6 years. During the study period, participants will visit the study clinic/hospital multiple times as per the study schedule. During Treatment Period, the participants will come to the clinic/hospital approximately every two to four weeks.