Clinical trials: Prevalence
Acute Hepatic Porphyria, Hepatic Porphyrias
INSIGHT-AHP: A Study to Characterize the Prevalence of Acute Hepatic Porphyria (AHP) in Patients With Clinical Presentation and History Consistent With AHP
This study will use specific diagnostic tests on a group of patients who are experiencing symptoms typical of acute hepatic porphyria (AHP) to determine how many have the condition, and to potentially help improve the diagnostic…
- Conditions
- Acute Hepatic Porphyria, Hepatic Porphyrias, Acute Intermittent Porphyria (AIP), Hereditary Coproporphyria (HCP)
- Trial name
- NCT03547297
- Where
- 12 sites in United States
- Volunteers
- 212 people
- Sponsor
- Alnylam Pharmaceuticals
Iron-deficiency
Study of the Prevalence of Iron Deficiency in Elderly Patient in Hospital Environment
Iron deficiency is defined by insufficient tissue iron stores and anemia is the ultimate stage of iron deficiency. Anemia should never be neglected in an elderly subject because it is associated with an increase in mortality, but…
- Trial name
- CARENFERPA (NCT05514951)
- Testing
- Blood sampling
- Where
- 16 sites in France
- Volunteers
- 888 people
- Sponsor
- Vifor Pharma
Age-related Macular Degeneration (AMD)
Real-world Evaluation of Prevalence of Ocular Adverse Events in Patients With Neovascular (Wet) Agerelated Macular Degeneration (AMD) Who Received Anti-VEGF Agents (IRIS Registry)
In this cross-sectional study of patients with wet AMD who received ≥1 anti-VEGF injection (excluding brolucizumab), evidence was generated to describe the period prevalence of specific ocular AEs.
- Trial name
- NCT05110209
- Testing
- Aflibercept, Ranibizumab, Bevacizumab
- Where
- United States
- Volunteers
- 331,541 people
- Sponsor
- Novartis Pharmaceuticals
Advanced or Recurrent Solid Tumor Harboring an NTRK Gene Fusion
An Observational Study to Learn More About NTRK Gene Fusion Positive in Solid Tumor in Japan
This is an observational study in which data from the past of people with solid tumors harboring an NTRK gene fusion in Japan are studied.
- Trial name
- NCT05793281
- Testing
- No Drug
- Where
- Japan
- Volunteers
- 46,621 people
- Sponsor
- Bayer
Ovarian Neoplasms
Characterizing the Cross-sectional Approach to Investigate the Prevalence of Tissue BRCA1/2 Mutations in Newly Diagnosed Advanced Ovarian Cancer Patients
This is a multi-center, observational study in Japan. Patients with newly diagnosed FIGO stage III - IV advanced OC will be enrolled sequentially.
- Trial name
- CHRISTELLE (NCT04222465)
- Where
- 20 sites in Japan
- Volunteers
- 207 people
- Sponsor
- AstraZeneca
Congenital Sucrase-isomaltase Deficiency (CSID)
Congenital Sucrase-Isomaltase Deficiency (CSID) Genetic Prevalence Study (GPS)
Congenital sucrose-isomaltase deficiency (CSID) is a rare, genetic disease in which mutations in the sucrose-isomaltase (SI) gene cause digestion problems of sucrose resulting in diarrhea and abdominal pain.
- Trial name
- CSID GPS (NCT01914003)
- Where
- 19 sites in United States
- Volunteers
- 53 people
- Sponsor
- QOL Medical, LLC
BRCA Status, Ovarian Cancer
Prevalence of BRCA in Patients With Ovarian Cancer
The aim of this prospective registration and translational research study is to evaluate the praevalence of BRCA regarding germline and somatic mutations.
- Trial name
- NCT02222883
- Testing
- Testing of BRCA status regarding germline and somatic mutation
- Where
- 20 sites in Germany
- Volunteers
- 530 people
- Sponsor
- AGO Research GmbH
Intestinal Disease
Study of the Prevalence of Iron Deficiency in Patients With Chronic Inflammatory Bowel Disease
Despite its known prevalence in IBD, a recent study conducted with Prof. Cacoub (unpublished) on the national health insurance database showed that iron deficiency was an under-diagnosed and under-treated co-morbidity.
- Trial name
- NCT04123990
- Testing
- Iron status testing
- Volunteers
- 1,100 people
- Sponsor
- VIFORFRANCE
Aneuploidy
National Prevalence and Impact of Noninvasive Prenatal Testing
Information on pregnant women undergoing non-invasive prenatal testing (NIPT) at one of the Obstetrix Medical Groups Outpatient Centers between January 2012 and June 2014 will be retrospectively gathered and an analysis of the…
- Trial name
- NCT02284399
- Testing
- non-invasive prenatal testing
- Where
- 7 sites in United States
- Volunteers
- 4,488 people, healthy volunteers welcome
- Sponsor
- Obstetrix Medical Group
Xanthomatosis, Cerebrotendinous
A Study on the Prevalence of Mutation of Cerebrotendinous Xanthomatosis (CTX)
This is a prospective, non-drug epidemological cohort study aimed to investigate the relatives of these cases with CTX-specific gene mutation and clinical features of CTX disease over CTX index cases diagnosed with CTX disease…
- Trial name
- F-GENE (NCT04218006)
- Testing
- Mutation Analysis
- Where
- Turkey (Türkiye)
- Volunteers
- 800 people, healthy volunteers welcome
- Sponsor
- TRPHARM
Constipation
Lactobacillus Casei Strain Shirota Fermented Milk for Alleviating Hard Stools in Vietnam
The objective of this study is to provide evidence supporting the efficacy of fermented milk containing Lactobacillus casei strain Shirota in alleviating hard or lumpy stools.
- Trial name
- NCT05982743
- Testing
- Lactobacillus casei strain Shirota fermented milk
- Where
- Vietnam
- Volunteers
- 51 people, healthy volunteers welcome
- Sponsor
- Yakult Honsha Co., LTD
Chronic Obstructive Pulmonary Disease
Characterisation of People With COPD
The investigators will describe the characteristics, prevalence, incidence, severity co-morbidity and management of patients with chronic obstructive pulmonary disease (COPD) in the UK.
- Trial name
- CoCO (NCT01263340)
- Where
- United Kingdom
- Volunteers
- 10,000 people
- Sponsor
- National Services for Health Improvement Ltd
Gastroesophageal Reflux Disease
A Cross-sectional Study on the Prevalence and Extraesophageal Symptoms of Gastroesophageal Reflux Disease(GERD) in Patients With Upper GI Symptoms, Visiting the Outpatient Departments of Peripheral Hospitals in Greece
The present study has been designed to provide current data on GERD prevalence in several regional areas of Greece outside the two major urban centres (Athens and Thessaloniki), to measure the treatment response in GERD patients…
- Trial name
- GERDQ-XS (NCT01215305)
- Where
- 19 sites in Greece
- Volunteers
- 600 people
- Sponsor
- AstraZeneca
Transthyretin Amyloidosis Cardiomyopathy (ATTR-CM)
Prevalence and Characteristics of Transthyretin Amyloidosis in Patients With Left Ventricular Hypertrophy of Unknown Etiology
The main purpose of this study is to determine the prevalence of ATTR Cardiomyopathy among patients admitted due to Left Ventricular Hypertrophy (LVH) >15mm of unknown etiology by using a 99mTc-tracer scintigraphy based protocol
- Trial name
- TTRACK (NCT03842163)
- Testing
- Diagnosis of TTR amyloidosis cardiomyopathy
- Where
- 18 sites in Australia, Austria and 8 more
- Volunteers
- 812 people
- Sponsor
- Pfizer
Type 2 Diabetes Mellitus in Remission, Metabolic Associated Fatty Liver Disease
Prevalence of MAFLD in Patients With Type 2 Diabetes in Jiangsu Province of China
In 2019, the number of patients with diabetes was about 463 million in the world, accounting for 8.3% of the total population, and it is expected to rise to 578 million (9.2%) by 2030 and 700 million (9.6%) by 2045.
- Trial name
- NCT05597709
- Testing
- Ultrasound attenuation parameter measurement, fasting blood glucose and fasting insulin determination
- Where
- China
- Volunteers
- 2,900 people
- Sponsor
- Wuxi Hisky Medical Technology Co Ltd
Pertussis
Pertussis Infection in Adolescents and Adults With Prolonged Cough
This study aims to determine the burden of pertussis infection among adolescents and adults with prolonged cough in four Asian countries, namely Malaysia, Philippines, Taiwan and Thailand.
- Trial name
- NCT01597687
- Testing
- Blood collection, Data collection
- Where
- 7 sites in Malaysia, Taiwan and 1 more
- Volunteers
- 337 people
- Sponsor
- GlaxoSmithKline
Breast Cancer
Estimation of the Prevalence of HER2 Low and Describe the SoC, Treatment Patterns, and Outcome in Real-world Practice Among Unresectable and/or Metastatic Breast Cancer Patients With HER2 Low Status
This is a worldwide, multicenter, non-interventional, retrospective study of patient medical records from metastatic breast cancer (mBC) patients previously identified as human epidermal growth factor receptor 2 negative…
- Trial name
- NCT04807595
- Testing
- None (Observational study)
- Where
- 13 sites in United States, Australia and 8 more
- Volunteers
- 798 people
- Sponsor
- AstraZeneca
Chronic Kidney Disease-associated Pruritus
Cross-sectional Study to Assess Prevalence and Burden of CKD-associated Pruritus in Hemodialysis Patients
Vifor International Ltd. is seeking real-world evidence (RWE) to better understand the epidemiology, patient characteristics, and management of CKD-aP in the real-world clinical setting.
- Trial name
- CKD (NCT05625542)
- Sponsor
- Vifor (International) Inc.
Heart Failure
PORTHOS - PORTuguese Heart Failure Observational Study
This study aims to determine the prevalence of heart failure in the resident population in mainland Portugal aged 50 years or above, using a contemporary, guideline-based diagnostic approach, to optimize patient management and…
- Trial name
- PORTHOS (NCT05434923)
- Where
- 13 sites in Portugal
- Volunteers
- 6,189 people
- Sponsor
- AstraZeneca
Hyperuricemia
Prevalence of Hyperuricemia in Pakistan
The prevalence of hyperuricemia has rarely been investigated in developing countries Hyperuricemia, or raised serum uric acid (SUA), is the condition closely associated with gout due to the deposition of monosodium urate crystals…
- Trial name
- NCT03473444
- Where
- Pakistan
- Volunteers
- 1,000 people, healthy volunteers welcome
- Sponsor
- OBS Pakistan