Clinical trials: Prevalence
Pertussis
Sero-prevalence of Anti-pertussis Antibodies and Disease Awareness Among Spanish Healthcare Professionals
This study aims to determine the sero-prevalence of anti-pertussis antibodies among healthcare professionals at hospital centres in Spain.
- Trial name
- NCT01706224
- Testing
- Blood sample, Data collection
- Where
- 3 sites in Spain
- Volunteers
- 757 people, healthy volunteers welcome
- Sponsor
- GlaxoSmithKline
Squamous Cell Carcinoma of the Head and Neck
SUPREME-HN A Retrospective Cohort Study of PD-L1 in Recurrent and Metastatic Squamous Cell Carcinoma of Head and Neck (SCCHN)
This is a retrospective international, multi-center, non-interventional cohort study based on use of data derived from established medical records and secondary analysis of archival tumor samples.
- Trial name
- SUPREME-HN (NCT02543476)
- Where
- 18 sites in United States, Germany and 5 more
- Volunteers
- 412 people
- Sponsor
- AstraZeneca
Adenosine Deaminase Deficiency
Investigation of ADA Enzyme Deficiency
This observational study was designed as a prospective epidemiological screening study. Patients who applied to the centers participating in the study and were found to be lymphopenic in at least one examination will be included…
- Trial name
- NCT05300334
- Testing
- adenosine deaminase test
- Where
- Turkey (Türkiye)
- Volunteers
- 800 people
- Sponsor
- TRPHARM
Epilepsy
A Study of the Prevalence of Headache in Epileptic Patients
The purpose of this study is to investigate the prevalence, characteristics and classification of headaches in epileptic patients.
- Trial name
- NCT00277368
- Testing
- A structured questionnaire for seizure-related headache
- Volunteers
- 719 people
- Sponsor
- Janssen Korea, Ltd., Korea
Hypogonadism
Association Between the Prevalence of Cardiovascular Risk Factors and New Use of Testosterone
We will investigate if testosterone is preferentially given to patients at higher risk of cardiovascular events. If this is the case, then observational studies may be prone to selection bias resulting in overestimation of the…
- Trial name
- NCT03484260
- Testing
- Testosterone Product
- Where
- Germany
- Volunteers
- 27,778 people
- Sponsor
- Bayer
Breast Cancer
A Non-interventional Prospective Study of Early HER2-negative High-risk Breast Cancer and BRCA1/2 Mutations Prevalence in RussiA
(Neo)adjuvant treatment approaches and outcomes
- Trial name
- ERA (NCT05939128)
- Where
- 19 sites in Russia
- Volunteers
- 625 people
- Sponsor
- AstraZeneca
Malaria, Malaria Vaccines
Epidemiology Study of Malaria Transmission Intensity in Sub-Saharan Africa
This epidemiology study was conducted in parallel with the EPI-MAL-002 (NCT02374450) and EPI-MAL-003 (NCT03855995) studies, enrolling participants from the same health and demographic surveillance system (HDSS) (or equivalent…
- Trial name
- NCT02251704
- Testing
- Assessment of body temperature, Blood sampling
- Where
- 12 sites in Burkina Faso, Ghana and 4 more
- Volunteers
- 54,115 people, healthy volunteers welcome
- Sponsor
- GlaxoSmithKline
Chronic Kidney Disease
REVEAL-CKD: Prevalence and Consequences of Undiagnosed Chronic Kidney Disease
This is a retrospective, multinational, non-interventional, observational study. A series of cohort studies will be conducted to assess the prevalence of undiagnosed stage 3 CKD in each region.
- Trial name
- REVEAL-CKD (NCT04847531)
- Where
- 13 sites in United States, Australia and 9 more
- Volunteers
- 1,006,361 people
- Sponsor
- AstraZeneca
Anemia
The Prevalence of Malaysian Children Aged ≥ 6 to ≤ 36 Months at Risk of Anaemia
The main purpose of this study is to determine the prevalence of Malaysian children aged ≥ 6 to ≤ 36 months at risk of anaemia by measuring Total Haemoglobin (SpHb) using a non-invasive haemoglobin assessment.
- Trial name
- NCT05181436
- Testing
- measuring Total Haemoglobin (SpHb) using Masimo Rad-67.
- Where
- Malaysia
- Volunteers
- 1,215 people, healthy volunteers welcome
- Sponsor
- Danone Specialized Nutrition (M) Sdn Bhd
Dry Eye Syndromes
A Study to Determine the Prevalence of Inflammatory Dry Eye Disease in Patients Prior to Cataract Removal
This study will evaluate the prevalence of inflammatory dry eye disease in patients prior to cataract surgery. No treatment is administered in this study.
- Trial name
- REVEAL (NCT01882413)
- Testing
- No intervention
- Where
- 6 sites in Canada
- Volunteers
- 204 people
- Sponsor
- Allergan
Resistant Hypertension, Hypercortisolism
Study of the Prevalence of Endogenous Hypercortisolism in Patients With Resistant Hypertension (MOMENTUM)
This is a non-interventional study to assess the prevalence of endogenous hypercortisolism (eHC) in patients with resistant hypertension (rHTN) and will enroll approximately 1000 patients at approximately 45 sites in the United…
- Trial name
- MOMENTUM (NCT06829537)
- Where
- 50 sites in United States
- Volunteers
- 1,143 people
- Sponsor
- Corcept Therapeutics
Cancer - Ovarian
A Study to Evaluate Folate Receptor Alpha (FRα) Expression in Adult Participants With Ovarian, Fallopian Tube, and Primary Peritoneal Cancer in Italy
The purpose of this study is to evaluate the prevalence of folate receptor alpha (FRα)-positive status (≥75% viable tumor cells with moderate (2+) and/or strong (3+) membrane staining) in participants with high-grade serous…
- Trial name
- FORCE (NCT07407062)
- Where
- Italy
- Volunteers
- 200 people
- Sponsor
- AbbVie
Gastroesophageal Reflux Disease
Prevalence of EED and Quality of Life Evaluated by Gastroesophageal Reflux Disease (GERD)-Q in Korean GERD Patients
The purpose of this study is to asses the EED symptom prevalence in Koran GERD patients with typical reflux symptom and to evaluate quality of life with the scales including Gerd Q.
- Trial name
- Preedom (NCT00768196)
- Where
- 4 sites in South Korea
- Volunteers
- 2,000 people
- Sponsor
- AstraZeneca
Functional Gastrointestinal Disorders
Prevalence of Functional Gastrointestinal Disorders (FGIDs), Related Signs and Symptoms in Infants/Toddlers in Thailand
Prevalence and impact of Functional Gastrointestinal Disorders (FGIDs) and Related Signs and Symptoms in Infants and Toddlers in Thailand
- Trial name
- GI_Planet (NCT03608735)
- Where
- Thailand
- Volunteers
- 7,908 people, healthy volunteers welcome
- Sponsor
- Danone Asia Pacific Holdings Pte, Ltd.
Cardiovascular Diseases
The Prevalence of COPD in Patients With Cardiovascular Disease and the Benefit of Cardiopulmonary Co-management
This is a multi-center, prospective, and interventional study conducted in 3 types of cardiovascular diseases (CVD) participants , including 3 cohorts which are patients with newly or previously diagnosed coronary heart disease …
- Trial name
- PRECEDE (NCT06909773)
- Testing
- Guideline education and implementation intervention
- Where
- 85 sites in China
- Volunteers
- 3,000 people
- Sponsor
- AstraZeneca
DAO Genetic Variants
Prevalence of DAO (diamino Oxidase) Deficiency in Newborns
Observational study to estimate the prevalence of genetic DAO deficiency in the population.
- Trial name
- DAO-NEO-2022 (NCT06710366)
- Where
- Spain
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- AB Biotek
Multiple Myeloma (MM)
Study to Evaluate t(11;14) Status and BCL2 Expression in Adult Participants With Multiple Myeloma (MM)
Multiple myeloma (MM) is a rare cancer caused by abnormal survival of plasma cells (blood cells). Most trial participants with MM relapse (cancer has come back) or become non- responsive to treatment and remission gets shorter…
- Trial name
- MEDICI (NCT04721002)
- Where
- 40 sites in United States, Argentina and 20 more
- Volunteers
- 514 people
- Sponsor
- AbbVie
Human Papillomavirus Infection
An Observational, Epidemiological Study on the Prevalence of Human Papillomavirus Types in Women in Egypt
The purpose of the study is to determine the Human Papillomavirus (HPV) prevalence and HPV type distribution among women aged >= 18 years, attending out-patient health services for gynaecological examination and who agree to HPV…
- Trial name
- NCT01158209
- Testing
- Endocervical samples
- Where
- 2 sites in Egypt
- Volunteers
- 490 people, healthy volunteers welcome
- Sponsor
- GlaxoSmithKline
Autosomal Dominant Polycystic Kidney Disease (ADPKD)
Polycystic Kidney Disease 1 (PKD1) Gene Variant Groups in Autosomal Dominant Polycystic Kidney Disease
The purpose of this study is to estimate the prevalence, demographic, and clinical characteristics of PKD1/2 gene variant groups in the ADPKD population.
- Trial name
- NCT06747572
- Where
- 45 sites in United States, Belgium and 7 more
- Volunteers
- 401 people
- Sponsor
- Vertex Pharmaceuticals Incorporated
Intestinal Failure-associated Liver Disease
Prevalence of Liver Disease in Patients Dependent on Parenteral Nutrition
This is a multi-center prospective cross-sectional observational study that will assess the prevalence of liver disease in patients dependent on parenteral nutrition (PN) for 4 or more days per week.
- Trial name
- THRIVE-1 (NCT05011370)
- Where
- 15 sites in United States, Denmark and 2 more
- Volunteers
- 80 people
- Sponsor
- Protara Therapeutics