Hemophagocytic syndrome
MONDO:0015540Hemophagocytic syndrome (HPS) is a rare immune disease and a potentially life-threatening disorder characterized by cytokine storm and overwhelming inflammation causing fever, hepatosplenomegaly, cytopenia, hypertriglyceridemia, hyperferritinemia, and hemophagocytosis in bone marrow, liver, spleen or lymph nodes. It can be either primary due to a genetic defect (primary hemophagocytic lymphohistiocytosis), or secondary to malignancies, to infections, most commonly with viruses such as Epstein-Barr virus or cytomegalovirus, human immunodeficiency virus, or to autoimmune disorders such as systemic lupus erythematosus or adult-onset Still disease (secondary hemophagocytic lymphohistiocytosis).
Also known as: HLH, Hemophagocytic Lymphohistiocytosis, hemophagocytic lymphohistiocytosis, hemophagocytic syndrome, FHL, familial erythrophagocytic lymphohistiocytosis, familial hemophagocytic lymphohistiocytosis, familial histiocytic reticulosis
61 clinical trials for this condition and its sub-types.
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Broader categories
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New drug targets Life-Threatening immune storm in rheumatic patients
Disease control Recruiting nowThis phase 3 trial tests a drug called plonmarlimab in 30 adults with a severe immune overreaction (macrophage activation syndrome) linked to rheumatic diseases that hasn't responded to prior treatment. Participants receive weekly IV infusions for 8 weeks. The main goal is to see…
Phase: PHASE3 • Sponsor: TJ Biopharma Co., Ltd. • Aim: Disease control
Last updated Jun 27, 2026 14:02 UTC
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New bone marrow transplant trial offers hope for kids with severe blood disorders
Disease control Recruiting nowThis study tests a bone marrow transplant from a family donor for children under 21 with severe non-cancer blood disorders like sickle cell disease, bone marrow failure, or immune problems. The goal is to see if the transplant can replace the diseased cells with healthy donor cel…
Phase: PHASE1, PHASE2 • Sponsor: Washington University School of Medicine • Aim: Disease control
Last updated Jun 27, 2026 13:00 UTC
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New drug targets deadly immune overreaction in rare disease
Disease control Recruiting nowThis study tests a new drug, ELA026, for people with secondary hemophagocytic lymphohistiocytosis (sHLH), a rare and life-threatening condition where the immune system becomes dangerously overactive. The drug aims to calm this overreaction by removing certain immune cells. The tr…
Phase: PHASE2, PHASE3 • Sponsor: Electra Therapeutics Inc. • Aim: Disease control
Last updated Jun 27, 2026 12:37 UTC
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New drug could tame deadly immune storm in kids before transplant
Disease control Recruiting nowThis study tests a drug called ruxolitinib as the first treatment for children with a rare, life-threatening immune condition called primary HLH. The goal is to calm the overactive immune system and help more children survive long enough to receive a stem cell transplant. The tri…
Phase: PHASE2 • Sponsor: Assistance Publique - Hôpitaux de Paris • Aim: Disease control
Last updated Jun 27, 2026 12:23 UTC
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New immune cell boost may shield kids from Post-Transplant infections
Disease control Recruiting nowThis study tests whether adding memory immune cells (CD45RO) to a stem cell transplant can help children fight off dangerous viral and fungal infections after the procedure. The transplant uses donor stem cells that have been stripped of certain cells to prevent graft-versus-host…
Phase: PHASE1, PHASE2 • Sponsor: Children's Hospital of Philadelphia • Aim: Disease control
Last updated Jun 27, 2026 12:08 UTC
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New hope for adults with HLH: gentler treatment combo under study
Disease control Recruiting nowThis phase 2 trial is testing a combination of ruxolitinib and a reduced-intensity version of the standard HLH-94 regimen (dexamethasone and etoposide) in 36 adults newly diagnosed with hemophagocytic lymphohistiocytosis (HLH), a rare condition where the immune system attacks the…
Phase: PHASE2 • Sponsor: Jerry Lee, MD, MSc, MPhil • Aim: Disease control
Last updated Jun 27, 2026 12:06 UTC
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New hope for deadly lymphoma combo: drug cocktail targets both cancer and immune chaos
Disease control Recruiting nowThis trial tests a new combination of drugs (MEPL-G) for people with a rare and aggressive lymphoma (NK/T-cell) that has triggered a life-threatening immune overreaction called HLH. The goal is to control both the cancer and the dangerous inflammation quickly. About 25 adults wil…
Phase: PHASE1, PHASE2 • Sponsor: Beijing Tongren Hospital • Aim: Disease control
Last updated Jun 27, 2026 12:06 UTC
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New hope for kids: drug may shield against dangerous viruses after transplant
Disease control Recruiting nowThis study tests whether the drug letermovir can prevent serious viral infections in children with EBV-related blood disorders who receive a stem cell transplant. About 80 children will be enrolled, and researchers will monitor for infections and other transplant complications. T…
Phase: NA • Sponsor: Beijing Children's Hospital • Aim: Disease control
Last updated Jun 27, 2026 12:00 UTC
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Cord blood transplants offer hope for kids without a donor match
Disease control Recruiting nowThis study tests a cord blood transplant in children and young adults (up to age 21) with life-threatening blood cancers or non-cancer blood disorders who do not have a matched family donor. The goal is to see if this approach lowers the risk of death from treatment one year afte…
Phase: PHASE2 • Sponsor: Memorial Sloan Kettering Cancer Center • Aim: Disease control
Last updated Jun 27, 2026 11:01 UTC
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Milder chemo may make stem cell transplants safer for Non-Cancer patients
Disease control Recruiting nowThis phase 2 trial tests a combination of three chemotherapy drugs (treosulfan, fludarabine, thiotepa) plus an immune-suppressing antibody before a donor stem cell transplant in up to 40 people under 50 with non-cancerous blood disorders. The goal is to see if this milder conditi…
Phase: PHASE2 • Sponsor: Fred Hutchinson Cancer Center • Aim: Disease control
Last updated Jun 27, 2026 11:00 UTC
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New drug aims to tame dangerous immune reactions from cancer therapy
Disease control Recruiting nowThis early-phase study tests whether an investigational drug called Tadekinig alfa can safely and feasibly treat severe immune overreactions (CRS and HLH-like syndrome) that can occur after CAR T cell therapy. Ten adult participants who are already in a CAR T cell trial will rece…
Phase: EARLY_PHASE1 • Sponsor: University of Pennsylvania • Aim: Disease control
Last updated Jun 27, 2026 09:09 UTC
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Cord blood transplant offers new hope for rare EBV diseases
Disease control Recruiting nowThis study tests whether a transplant of donated umbilical cord blood can help people aged 14 to 80 with serious diseases caused by the Epstein-Barr virus (EBV), such as certain lymphomas or chronic active EBV infection. The goal is to control the disease and improve survival, bu…
Phase: PHASE2 • Sponsor: Fudan University • Aim: Disease control
Last updated Jun 27, 2026 09:01 UTC
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New drug duo takes on stubborn Epstein-Barr virus
Disease control Recruiting nowThis study tests whether combining two drugs, golidocitinib and selinexor, can control chronic active Epstein-Barr virus disease (CAEBVD). Researchers will enroll 28 adults with CAEBVD and track how well the treatment reduces symptoms and lowers virus levels in the blood. It is a…
Phase: PHASE2, PHASE3 • Sponsor: Beijing Friendship Hospital • Aim: Disease control
Last updated Jun 27, 2026 09:00 UTC
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New hope for HLH patients: targeted drug tested in clinical trial
Disease control Recruiting nowThis study tests a drug called golidocitinib for people with hemophagocytic lymphohistiocytosis (HLH), a rare condition where the immune system attacks the body. The trial will include 28 people aged 14 to 70 with newly diagnosed or returning HLH. The goal is to see if the drug c…
Phase: PHASE2, PHASE3 • Sponsor: Beijing Friendship Hospital • Aim: Disease control
Last updated Jun 27, 2026 08:11 UTC
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Milder chemo before stem cell transplant shows promise for rare blood disorders
Disease control Recruiting nowThis study tracks 50 children and adults with non-malignant disorders like immune deficiencies and anemias who receive a stem cell transplant after a reduced-intensity chemotherapy regimen. The goal is to see if this approach improves survival and reduces severe graft-versus-host…
Sponsor: Paul Szabolcs • Aim: Disease control
Last updated Jun 27, 2026 08:10 UTC
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Milder transplant method aims to help young patients with rare blood diseases
Disease control Recruiting nowThis study is testing a less intense chemotherapy and radiation regimen before a stem cell transplant for children and young adults up to age 55 with non-cancerous blood disorders like immune deficiencies, anemias, and metabolic diseases. The goal is to see if this gentler prepar…
Phase: PHASE2 • Sponsor: Paul Szabolcs • Aim: Disease control
Last updated Jun 27, 2026 08:04 UTC
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New drug cocktail aims to tame deadly immune storm in lymphoma
Disease control Recruiting nowThis study tests a combination of two drugs, zanubrutinib and rituximab, for people with B-cell lymphoma who develop a severe immune overreaction called hemophagocytic lymphohistiocytosis (HLH). The trial will enroll 40 participants and aims to see how well the treatment controls…
Phase: PHASE4 • Sponsor: The First Affiliated Hospital of Soochow University • Aim: Disease control
Last updated Jun 27, 2026 08:02 UTC
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Blood test may unlock mystery of Similar-Looking diseases
Diagnosis Recruiting nowThis study is looking for a better way to diagnose three serious conditions that can look alike: Still's disease, sepsis, and macrophage activation syndrome. Researchers will measure a specific form of a blood protein called glycosylated ferritin in 60 people suspected of having …
Sponsor: Brugmann University Hospital • Aim: Diagnosis
Last updated Jun 27, 2026 07:54 UTC
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New ultrasound technique could spot cancer in lymph nodes without a needle
Diagnosis Recruiting nowThis study tests a new type of ultrasound called super-resolution ultrasound (SRUS) to see if it can better tell the difference between benign (non-cancerous) and malignant (cancerous) swollen lymph nodes. About 779 adults with abnormal lymph nodes will receive an injection of ul…
Sponsor: Peking University Third Hospital • Aim: Diagnosis
Last updated Jun 26, 2026 13:47 UTC
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Massive study aims to unravel mysteries of blood clots and vessel disease
Knowledge-focused Recruiting nowThis study aims to learn more about how diseases related to blood clots, the immune system, and blood vessels start and change over time. Researchers will enroll up to 1,000 people aged 5 and older, including those with these conditions, their healthy relatives, and healthy volun…
Sponsor: National Heart, Lung, and Blood Institute (NHLBI) • Aim: Knowledge-focused
Last updated Jul 03, 2026 23:00 UTC
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New study aims to spot lung trouble before it starts in transplant patients
Knowledge-focused Recruiting nowThis study looks for better ways to detect lung inflammation and infections early in people who have received a stem cell transplant from a donor. About 40 participants aged 5 to 70 will get regular lung scans, breathing tests, blood draws, and a procedure where a tube collects f…
Sponsor: National Heart, Lung, and Blood Institute (NHLBI) • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:01 UTC
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Massive study tracks hidden toll of rare immune diseases
Knowledge-focused Recruiting nowThis study follows 6,000 people with histiocytic disorders (like Langerhans cell histiocytosis) to understand long-term health problems, pain, mental health, and causes of death. Researchers compare participants to healthy controls to identify factors that lead to new health issu…
Sponsor: University of Alabama at Birmingham • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:05 UTC
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Massive eye gene bank aims to unlock secrets of rare blindness
Knowledge-focused Recruiting nowThis study aims to collect DNA samples and detailed eye exam data from 1,000 people with rare inherited eye diseases like aniridia, Best disease, and albinism. Participants provide a saliva or blood sample and share their eye health records. The goal is to expand a research repos…
Sponsor: National Eye Institute (NEI) • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:05 UTC
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Scientists launch deep dive into rare genetic disease
Knowledge-focused Recruiting nowThis study aims to learn more about Chediak-Higashi syndrome, a rare genetic disorder that causes light skin and hair, easy bruising, and frequent infections. Researchers will observe up to 60 patients over time, collecting clinical and genetic data to better understand the disea…
Sponsor: National Human Genome Research Institute (NHGRI) • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:01 UTC
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New study sheds light on mysterious immune disease in adults
Knowledge-focused Recruiting nowThis study is following 81 adults with a rare condition called hemophagocytic lymphohistiocytosis (HLH), where the immune system becomes dangerously overactive. Researchers aim to better understand the disease's features and how patients respond to treatments like steroids and ch…
Sponsor: Samsung Medical Center • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:23 UTC
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Can a simple questionnaire predict who will follow their treatment?
Knowledge-focused Recruiting nowThis study is testing a tool called B-COMPASS that uses a 22-question survey to predict whether people will follow their prescribed treatments. Researchers will enroll 3100 adults with cardiovascular, endocrine, immune, nerve, cancer, or rare diseases across Europe. The goal is t…
Phase: NA • Sponsor: Technical University of Madrid • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:01 UTC
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Researchers launch study to unravel mysteries of rare immune disorder sHLH
Knowledge-focused Recruiting nowThis study aims to understand why some adults develop secondary hemophagocytic lymphohistiocytosis (sHLH), a serious immune condition causing fevers and organ damage. Researchers will follow 300 participants for up to 3 years, collecting blood samples and medical data to identify…
Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) • Aim: Knowledge-focused
Last updated Jun 27, 2026 11:03 UTC
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New HLH registry aims to unlock secrets of rare immune disease
Knowledge-focused Recruiting nowThis study is a registry that collects information from 200 people with hemophagocytic lymphohistiocytosis (HLH), a rare condition where the immune system becomes dangerously overactive. Researchers will track how quickly HLH is diagnosed, what treatments are used, and what compl…
Sponsor: Children's Hospital Medical Center, Cincinnati • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:07 UTC
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Massive new registry aims to unlock secrets of biologic drugs
Knowledge-focused Recruiting nowThis study is creating a large registry of 800 people receiving biologic medications for immune conditions like autoimmune diseases and primary immune deficiencies. Researchers will collect blood samples and health data to better understand how these treatments work and who respo…
Sponsor: Icahn School of Medicine at Mount Sinai • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:05 UTC
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Large study aims to uncover best treatments for lymphoma patients with dangerous immune reaction
Knowledge-focused Recruiting nowThis study is observing 2,000 lymphoma patients who also develop hemophagocytic lymphohistiocytosis (HLH), a severe immune overreaction. Researchers will collect data on which treatments patients receive and how they respond, aiming to identify factors that improve survival at 18…
Sponsor: University of Alabama at Birmingham • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:13 UTC
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ICU liver patients: new study tests HLH diagnostic tool
Knowledge-focused Recruiting nowThis study looks at whether a tool called the HScore can accurately diagnose hemophagocytic lymphohistiocytosis (HLH) in intensive care patients with liver failure or cirrhosis. Researchers will review medical records of 100 adults admitted to one hospital over ten years who had …
Sponsor: University Hospital, Strasbourg, France • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:11 UTC
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Tick-Borne mystery: alsace study digs into rare anaplasmosis cases
Knowledge-focused Recruiting nowThis study collects information from about 100 adults in Alsace who have had a confirmed case of human anaplasmosis, a bacterial infection spread by ticks. Researchers want to learn more about how common it is, what symptoms people have, and how serious it can be. The goal is to …
Sponsor: University Hospital, Strasbourg, France • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:07 UTC
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Massive registry launched to see if Blood-Filtering device helps sickest patients
Knowledge-focused Recruiting nowThis registry is tracking 3,000 critically ill patients who receive the CytoSorb blood-filtering device in real-world intensive care settings. The goal is to collect data on how the device is used and whether it relates to patient survival. It covers many conditions like sepsis, …
Sponsor: CytoSorbents, Inc • Aim: Knowledge-focused
Last updated Jun 26, 2026 15:43 UTC
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New study aims to crack the code of autoimmune diseases
Knowledge-focused Recruiting nowThis study is collecting blood, urine, and stool samples from 500 children with autoimmune diseases and healthy controls. Researchers will analyze these samples to find molecular patterns that could help diagnose these conditions and guide treatment decisions. The goal is to crea…
Sponsor: Institut National de la Santé Et de la Recherche Médicale, France • Aim: Knowledge-focused
Last updated Jun 26, 2026 14:28 UTC