Primary lymphedema
MONDO:0019175A congenital condition that results in swelling in the arms or legs, and can occur during adolescence or adulthood. Loss of motion and pain may also accompany the swelling. Protein-rich lymphatic fluid accumulates in tissues, engorging and enlarging vessels and often causing visible swelling, tenderness, and pain. Left untreated, the affected tissues may continue to swell, and can become hardened or fibrotic and susceptible to infection.
Also known as: Troncular lymphatic malformation, primary lymphedema
69 clinical trials for this condition and its sub-types.
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Broader categories
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New drug trial aims to shrink painful lymphatic growths in kids and adults
Disease control Recruiting nowThis study tests alpelisib, a drug that targets a specific gene mutation (PIK3CA), in people with lymphatic malformations—abnormal growths of lymph vessels. The trial includes children and adults and compares alpelisib to a placebo to see if it can shrink the growths and ease sym…
Phase: PHASE2, PHASE3 • Sponsor: Novartis Pharmaceuticals • Aim: Disease control
Last updated Jul 03, 2026 23:00 UTC
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Weekly shot could replace daily growth hormone for kids
Disease control Recruiting nowThis phase 3 trial compares a once-weekly growth hormone injection (lonapegsomatropin) to a daily one (somatropin) in 186 prepubertal children with growth failure due to Turner syndrome, SHOX deficiency, being small for gestational age, or idiopathic short stature. The goal is to…
Phase: PHASE3 • Sponsor: Ascendis Pharma A/S • Aim: Disease control
Last updated Jun 27, 2026 14:02 UTC
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New drug targets root cause of rare overgrowth syndromes
Disease control Recruiting nowThis Phase 2 study tests an oral drug called RLY-2608 in adults and children with overgrowth conditions (like CLOVES or Klippel-Trenaunay syndrome) caused by PIK3CA gene mutations. The drug is designed to block the faulty protein driving abnormal tissue growth. The trial will enr…
Phase: PHASE2 • Sponsor: Relay Therapeutics, Inc. • Aim: Disease control
Last updated Jun 27, 2026 13:06 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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Could a common drug shrink rare growths in Kids' faces and necks?
Disease control Recruiting nowThis study tests whether the drug rapamycin can shrink large, hard-to-treat lymphatic malformations in the head and neck area of children. Over 6 months, 28 kids will take oral rapamycin, and doctors will measure changes using MRI scans and quality-of-life surveys. The goal is to…
Phase: PHASE2 • Sponsor: University Hospital, Lille • Aim: Disease control
Last updated Jun 27, 2026 12:36 UTC
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New injection could help kids with rare growths avoid major surgery
Disease control Recruiting nowThis study tests an injected medicine called TARA-002 for children aged 6 months to 18 years who have lymphatic malformations (fluid-filled cysts). The goal is to see if the injections can safely shrink or eliminate the cysts. Up to 38 children will receive up to 4 injections, ea…
Phase: PHASE2 • Sponsor: Protara Therapeutics • Aim: Disease control
Last updated Jun 27, 2026 12:34 UTC
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New drug aims to boost growth in kids with noonan syndrome
Disease control Recruiting nowThis study tests vosoritide, a protein that stimulates bone growth, in 30 children with Noonan syndrome who are not growing well despite growth hormone treatment. The goal is to see if vosoritide can safely increase their growth rate over six months. Participants will receive one…
Phase: PHASE2 • Sponsor: BioMarin Pharmaceutical • Aim: Disease control
Last updated Jun 27, 2026 12:32 UTC
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New hope for rare vascular malformations: targeted drugs enter trial
Disease control Recruiting nowThis phase 2 trial is testing two targeted drugs—alpelisib and mirdametinib—in 50 people with slow-flow or fast-flow vascular malformations that haven't responded to standard treatments. The goal is to see if these drugs can improve each person's most bothersome symptom over 48 w…
Phase: PHASE2 • Sponsor: Murdoch Childrens Research Institute • Aim: Disease control
Last updated Jun 27, 2026 12:29 UTC
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Weekly pill could tame painful birthmarks with fewer side effects
Disease control Recruiting nowThis study tests whether taking the drug sirolimus just once a week can safely treat venous and lymphatic malformations—abnormal clusters of blood vessels or lymph vessels that can cause pain and swelling. Current daily dosing works but often causes side effects like low white bl…
Phase: PHASE2 • Sponsor: Medical University of South Carolina • Aim: Disease control
Last updated Jun 27, 2026 09:10 UTC
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Glow-in-the-Dark dye could make Children's tumor surgery safer and more effective
Disease control Recruiting nowThis study tests whether a special dye (indocyanine green) that glows under a special camera can help surgeons better see and remove cystic lymphatic malformations in children. About 110 children will be randomly assigned to either standard surgery or surgery guided by this dye. …
Phase: NA • Sponsor: Nanjing Children's Hospital • Aim: Disease control
Last updated Jun 27, 2026 09:06 UTC
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New hope for kids with rare eye condition: drug combo shows promise
Disease control Recruiting nowThis study tests a systematic approach for treating orbital lymphatic malformation in children aged 1-18. Participants are split into three groups: one gets sclerotherapy (injections to shrink the lesion), one gets the drug sirolimus, and one gets both. The goal is to see if siro…
Phase: PHASE3 • Sponsor: Ain Shams University • Aim: Disease control
Last updated Jun 27, 2026 09:00 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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New painkiller oliceridine tested against morphine in back surgery patients
Symptom relief Recruiting nowThis study compares a newer painkiller called oliceridine with two standard drugs, morphine and sufentanil, for pain relief after lumbar spine surgery. Ninety adults will receive one of the three drugs through a patient-controlled pump. The main goal is to see how well each drug …
Phase: NA • Sponsor: Anqing Municipal Hospital • Aim: Symptom relief
Last updated Jun 27, 2026 13:02 UTC
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Exercise with or without compression: a new hope for leg swelling?
Symptom relief Recruiting nowThis study looks at whether doing resistance exercises (like leg presses) can reduce swelling in the lower legs of people with lymphedema. It also checks if wearing compression garments during exercise makes a difference. Thirty-six adults with lower limb lymphedema will exercise…
Phase: NA • Sponsor: Carsten Bogh Juhl • Aim: Symptom relief
Last updated Jun 27, 2026 12:29 UTC
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Can a supplement ease knee pain? new study seeks answers
Symptom relief Recruiting nowThis study tests whether a supplement called MyCondro can help people with knee osteoarthritis move better and feel less joint discomfort. Researchers will give two different doses to 240 adults aged 45 and older who have had knee problems for at least six months. The main goal i…
Phase: NA • Sponsor: Lesaffre International • Aim: Symptom relief
Last updated Jun 27, 2026 12:00 UTC
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Virtual reality steps in to help lymphedema patients walk better
Symptom relief Recruiting nowThis study tests whether adding virtual reality (VR) exercises to standard therapy can improve walking, reduce leg swelling, and boost quality of life in people with lower limb lymphedema. Forty adults with stage 2 or 3 lymphedema after cancer surgery will either receive standard…
Phase: NA • Sponsor: Gaziler Physical Medicine and Rehabilitation Education and Research Hospital • Aim: Symptom relief
Last updated Jun 27, 2026 11:01 UTC
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Aerobic exercise may boost mobility in leg lymphedema patients
Symptom relief Recruiting nowThis study tests whether adding aerobic exercise to standard lymphedema therapy (complex decongestive physiotherapy) can improve walking, balance, leg strength, and daily function. Twenty-four adults with bilateral lower limb lymphedema will be randomly assigned to either standar…
Phase: NA • Sponsor: Bezmialem Vakif University • Aim: Symptom relief
Last updated Jun 27, 2026 09:05 UTC
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New study tests online therapy to ease stress for parents of kids with RASopathies
Symptom relief Recruiting nowThis study tests whether Acceptance and Commitment Therapy (ACT), delivered through a smartphone app, can help caregivers of children with RASopathies (like Neurofibromatosis type 1 and Noonan syndrome) cope with parenting stress. The trial is fully remote and involves 70 adult c…
Phase: NA • Sponsor: National Cancer Institute (NCI) • Aim: Symptom relief
Last updated Jun 27, 2026 09:05 UTC
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Could sticky tape ease breast cancer swelling? new trial investigates
Symptom relief Recruiting nowThis study tests whether adding kinesio tape to standard therapy helps women with long-term breast or trunk swelling after breast cancer treatment. About 128 participants will receive either standard care alone or standard care plus kinesio tape for four weeks. Researchers will m…
Phase: NA • Sponsor: Universiteit Antwerpen • Aim: Symptom relief
Last updated Jun 26, 2026 13:10 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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Massive study launches to unravel mysteries of rare lymphatic diseases
Knowledge-focused Recruiting nowThis natural history study aims to collect data from 1,200 people with lymphatic anomalies—rare conditions affecting the body's lymph system—over many years. Researchers will track symptoms, perform genetic testing, and gather biospecimens to better understand why these condition…
Sponsor: Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:02 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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Hunt for hidden cancer genes: families needed to unlock hereditary secrets
Knowledge-focused Recruiting nowThis study aims to discover new genes that may cause certain cancers to run in families. Researchers will collect blood samples and health information from 1,500 people in families where multiple members have had cancer, especially childhood cancers. The goal is to build a regist…
Sponsor: St. Jude Children's Research Hospital • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:00 UTC
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New study tackles diagnostic maze for rare developmental disorders
Knowledge-focused Recruiting nowThis study looks at how to reduce the long and frustrating journey to a diagnosis for people with developmental abnormalities. Researchers will review past cases, collect new blood or skin samples, and use advanced genetic testing. The goal is to understand why some people remain…
Sponsor: Centre Hospitalier Universitaire Dijon • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:00 UTC
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Scientists launch major study to unravel rare genetic conditions
Knowledge-focused Recruiting nowThis study aims to learn more about RASopathies, a group of genetic conditions that can cause developmental issues, birth defects, and increased cancer risk. Researchers will follow up to 500 people of any age who have or may have a RASopathy, along with their family members, for…
Sponsor: National Cancer Institute (NCI) • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:06 UTC
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Scientists launch global effort to unravel mysteries of rare lymphatic diseases
Knowledge-focused Recruiting nowThis study is creating a registry of up to 1,000 people with rare lymphatic system disorders. Researchers will collect information from medical records and yearly surveys to understand how these diseases progress, what treatments are used, and how they affect quality of life. The…
Sponsor: Boston Children's Hospital • 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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Noonan syndrome research: scientists launch sample collection to unlock disease secrets
Knowledge-focused Recruiting nowThis study aims to create a collection of blood and urine samples from 100 people with Noonan syndrome. Researchers will use these samples to study how the disease works and look for factors that predict how it will progress. The study does not test any treatment, but may help gu…
Sponsor: University Hospital, Toulouse • Aim: Knowledge-focused
Last updated Jun 27, 2026 11:03 UTC
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New study tracks pregnancy dangers in rare vascular conditions
Knowledge-focused Recruiting nowThis study follows 400 pregnant women with rare blood vessel diseases (like HHT, Marfan syndrome, or lymphedema) to learn about serious pregnancy complications. Researchers will ask participants about their health during pregnancy and for 12 months after birth. The goal is to gat…
Sponsor: Hospices Civils de Lyon • Aim: Knowledge-focused
Last updated Jun 27, 2026 11:01 UTC
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Noonan syndrome study aims to uncover hidden heart risks
Knowledge-focused Recruiting nowThis study looks at cholesterol and blood sugar levels in 200 people with Noonan syndrome and related conditions, aged 2 to 35. Researchers want to see if these levels differ by age, gender, or genetic type. The goal is to improve long-term care by identifying who might be at hig…
Sponsor: IRCCS Azienda Ospedaliero-Universitaria di Bologna • Aim: Knowledge-focused
Last updated Jun 27, 2026 11:01 UTC
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German hospital emergency plans under the microscope: what works and what Doesn't?
Knowledge-focused Recruiting nowThis study looks at the emergency and disaster plans of about 319 German hospitals to see how well they are prepared for crises. Researchers will compare the plans to find common strengths, weaknesses, and best practices. The goal is to help hospitals improve their emergency plan…
Sponsor: Lea Kölsch • Aim: Knowledge-focused
Last updated Jun 27, 2026 11:00 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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New scan techniques aim to solve rare heart disease mysteries
Knowledge-focused Recruiting nowThis study is testing advanced heart MRI scans to better diagnose and predict risks for people with rare heart muscle diseases. Researchers will scan 1000 participants to see if these new imaging methods can identify conditions like Fabry disease and cardiac amyloidosis more accu…
Sponsor: Chinese Academy of Medical Sciences, Fuwai Hospital • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:13 UTC
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500-Patient registry aims to unlock better care for rare lymphatic disorders
Knowledge-focused Recruiting nowThis study is a large European registry that will observe up to 500 patients with lymphatic disorders related to congenital heart disease. Researchers will collect data on current diagnostic imaging and treatments like lymphatic embolization to see which approaches improve sympto…
Sponsor: Rigshospitalet, Denmark • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:12 UTC
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Scientists dive deep into Lymphedema's genetic roots
Knowledge-focused Recruiting nowThis study aims to understand why lymphedema develops by comparing gene activity in swollen versus healthy limbs. Researchers will take tiny tissue samples from 60 adults with primary or secondary lymphedema. The goal is to identify molecular differences that could point toward f…
Phase: NA • Sponsor: University Hospital, Toulouse • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:07 UTC
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Massive study aims to unlock secrets of rare genetic disorders
Knowledge-focused Recruiting nowThis study is collecting blood, tissue, and medical information from up to 1,000 people with RASopathies—a group of genetic conditions that affect development and raise cancer risk. Researchers will store these samples and data in a database for future studies. The goal is to lea…
Sponsor: Children's Hospital Medical Center, Cincinnati • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:05 UTC
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Scientists probe hidden causes of stubborn leg swelling
Knowledge-focused Recruiting nowThis study looks at 48 people with chronic leg swelling to find out why some respond to compression therapy and others don't. Participants will have an MRI and genetic testing to measure fat, muscle, and fluid in their legs. The goal is to better understand the condition, not to …
Sponsor: University Hospital, Montpellier • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:53 UTC