Explore popular diseases in clinical trials

Check which popular diseases are currently being frequently studied.

See also our rare diseases glossary and drug database.

Starting by letter

To open the diseases glossary, select a letter from the list below.

Most popular diseases

The list below features the most popular diseases currently involved in ongoing clinical trials.

Disease Trials
Non-small cell lung cancer 238
Breast cancer 131
Neoplasm 124
Plasma cell myeloma 122
Acute myeloid leukaemia 102
Neoplasm malignant 91
Prostate cancer 89
Colitis ulcerative 87
Obesity 81
Colorectal cancer metastatic 80
Crohn’s disease 76
Dementia Alzheimer’s type 75
Type 2 diabetes mellitus 71
Ovarian cancer 71
Colorectal cancer 69
Dermatitis atopic 66
Malignant melanoma 65
Breast cancer metastatic 65
Hepatocellular carcinoma 63
Triple negative breast cancer 62
Chronic lymphocytic leukaemia 60
Asthma 60
Non-small cell lung cancer metastatic 59
Rheumatoid arthritis 58
Squamous cell carcinoma of head and neck 58
HIV infection 57
Hormone receptor positive HER2 negative breast cancer 55
Osteoarthritis 55
Renal transplant 50
Pancreatic carcinoma 49
Chronic kidney disease 49
Ischaemic stroke 45
Parkinson’s disease 44
Atrial fibrillation 44
Systemic lupus erythematosus 43
Multiple sclerosis 42
Gastric cancer 42
Hormone-refractory prostate cancer 40
Bladder cancer 40
Chronic obstructive pulmonary disease 40
Psoriasis 40
Non-small cell lung cancer stage IV 40
Oesophageal adenocarcinoma 40
Migraine 39
Major depression 38
Endometrial cancer 38
Psoriatic arthropathy 37
Glioblastoma 36
Transitional cell carcinoma 36
Overweight 36
Myelodysplastic syndrome 36
Cardiac failure 35
Diffuse large B-cell lymphoma 35
Systemic scleroderma 33
Hormone receptor positive breast cancer 33
COVID-19 32
Cholangiocarcinoma 32
Schizophrenia 32
Type 1 diabetes mellitus 32
Hidradenitis 31
Prostate cancer metastatic 31
Head and neck cancer 31
HER2 positive breast cancer 30
Adenocarcinoma pancreas 30
Myasthenia gravis 30
Coronary artery disease 29
Acute lymphocytic leukaemia 29
Renal cell carcinoma 29
Rectal cancer 29
Cervix carcinoma 29
Pulmonary arterial hypertension 28
Follicular lymphoma 28
Plasma cell myeloma refractory 28
Oesophageal carcinoma 27
Depression 27
Bladder transitional cell carcinoma 27
Pancreatic carcinoma metastatic 27
Adenocarcinoma gastric 26
Pneumonia 26
Interstitial lung disease 25
Metastatic malignant melanoma 25
B-cell lymphoma 25
Acute myocardial infarction 25
Procedural pain 25
Myelofibrosis 24
Non-small cell lung cancer stage III 24
Colon cancer 24
Amyotrophic lateral sclerosis 24
Non-small cell lung cancer stage IIIB 24
Idiopathic pulmonary fibrosis 24
Small cell lung cancer 23
Breast cancer female 23
Sjogren’s syndrome 23
Fallopian tube cancer 23
Lung neoplasm malignant 22
Sepsis 22
Small cell lung cancer extensive stage 22
Endocrine ophthalmopathy 22
B-cell small lymphocytic lymphoma 22
Soft tissue sarcoma 22

Diseases starting with o

  • 4

    Ovarian cancer stage III

    Stage 3 ovarian cancer has spread beyond the pelvis into the abdominal cavity or to nearby lymph nodes. While this is an advanced form of the disease, treatment combining surgery and chemotherapy can be effective, and many people continue to live full lives after diagnosis.

  • 4

    Ovarian cancer stage IV

    Stage 4 ovarian cancer is the most advanced form of the disease, where cancer cells have spread beyond the ovaries and abdomen to distant parts of the body such as the liver, lungs, or other organs. While this is a serious diagnosis, treatment options exist to help control the cancer, extend life, and improve quality of life.

  • 13

    Ovarian epithelial cancer

    Epithelial ovarian cancer is the most common and deadliest form of ovarian cancer, often diagnosed at advanced stages when it has already spread beyond the ovaries. This disease can be difficult to detect early because symptoms are often subtle or mistaken for less serious conditions, making awareness and regular medical checkups essential.

  • 1

    Ovarian epithelial cancer metastatic

    When ovarian cancer spreads beyond the ovaries to distant parts of the body, it becomes metastatic ovarian cancer, classified as Stage IV. This advanced form of the disease represents a significant challenge, yet understanding treatment options and available therapies provides hope for patients and their families.

  • 2

    Ovarian epithelial cancer recurrent

    When ovarian epithelial cancer returns after treatment, it presents new challenges but also new treatment options. Understanding recurrence patterns, symptoms, and available therapies can help patients and their families navigate this difficult journey with greater confidence.

  • 1

    Ovarian epithelial cancer stage III

    Stage 3 ovarian epithelial cancer has spread beyond the pelvis into the abdomen or nearby lymph nodes, but with modern treatment approaches combining surgery and chemotherapy, many patients can achieve long-term survival.

  • 2

    Ovarian epithelial cancer stage IV

    Stage IV ovarian epithelial cancer is the most advanced form of this disease, where cancer has spread beyond the ovaries to distant parts of the body such as the liver or lungs. While this diagnosis is serious, treatment combining surgery and chemotherapy can help control the disease and improve quality of life.

  • 1

    Ovarian germ cell cancer stage IV

    Stage IV ovarian germ cell cancer is the most advanced form of this rare cancer, where the disease has spread from the ovaries to distant organs like the liver or lungs. Though this represents a serious diagnosis, treatment options including surgery and chemotherapy can help manage the disease and improve outcomes.

  • 0

    Ovarian granulosa cell tumour

    Ovarian granulosa cell tumours are rare hormone-producing tumours that account for about 5% of all ovarian cancers. Most are diagnosed early and grow slowly, often causing symptoms related to high estrogen levels such as irregular bleeding or early puberty in young girls.

  • 1

    Ovarian low malignant potential tumour

    Ovarian low malignant potential tumours are abnormal growths that develop in the ovaries. Unlike typical cancers, these tumours have unusual cells that may become cancer but usually do not, and they often affect younger women with an excellent chance of recovery.

  • 36

    Overweight

    Overweight affects billions of people worldwide, and understanding this condition is the first step toward making positive changes for your health and well-being.

  • 1

    Oxygen saturation

    Oxygen saturation measures how much of the oxygen-carrying protein in your blood is actually loaded with oxygen. It’s a vital indicator of how well your body is getting the oxygen it needs to function properly, and monitoring it has become a standard part of medical care.

  • 1

    Oxygen therapy

    Oxygen therapy provides extra oxygen to people whose bodies cannot get enough on their own. This treatment helps prevent serious complications from low oxygen levels and can greatly improve quality of life for those with breathing difficulties.