There are about 154 clinical studies being (or have been) conducted in Costa Rica. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
Background: HPV is the human papillomavirus. Women who get infected with it can get cervical cancer. The Costa Rica vaccine trial (CVT) studied an HPV vaccine for young women. A Long Term Follow Up (LTFU) study was done 10 years later. Researchers want to follow up with the women in these studies for 5 more years. This will help them learn more about the risks and benefits of the HPV vaccine. Objectives: To study anti-HPV-16/18 antibodies over the long term in women who got an HPV vaccinate. To study how antibody levels have changed depending on the dose and type of vaccine. Eligibility: Women in the original CVT LTFU study Design: Staff will contact participants from the CVT LTFU study. This will be done by phone or in person at home. Participants will be asked about participating in a new study. Participants who agree will have their first study visit and sign the informed consent document. Participants will answer questions about sexual behavior, smoking, contraceptives, and reproductive history. Participants will have blood collected. Study visits will be conducted either in a clinic or at home.
This observational case-control trial sought to identify and characterize different exposures associated with nonfatal acute myocardial infarction in Costa Rican adults. Exposures assessed included dietary variables and adipose tissue fatty acids.
This is a Phase III/IV, single-arm, multicenter study of the long-term safety and efficacy of atezolizumab treatment in participants with Stage IIIb or Stage IV NSCLC who have progressed after standard systemic chemotherapy (including if given in combination with anti-programmed cell death protein 1 [anti-PD-1] therapy or after anti-PD-1 as monotherapy). The study will consist of a Screening Period, a Treatment Period, a Treatment Discontinuation Visit, and a Follow-Up Period.
Background: Certain types of human papillomavirus (HPV) cause almost all cases of cervical cancer. Vaccines that protect against HPV can substantially reduce the risk of cervical cancer. However, HPV vaccination rates are too low, especially in countries with very high rates of cervical cancer. HPV vaccines are expensive-many countries cannot afford them-more than one dose is needed, and giving multiple doses is difficult. Researchers want to find out if one dose prevents HPV infection. If it does, more people might get the vaccine. Objective: To find out if giving only one dose of either the Cervarix or Gardasil9 HPV vaccines work the same as giving two doses of these vaccines to young women. Eligibility: Females ages 12-20 who live in Costa Rica. Design: Participants will be screened in a clinic with a physical exam and medical history. Participants will have one clinic visit every 6 months for 4 years. Participants will be randomly divided into 4 groups. Two vaccines will be tested. Vaccines will be given in the arm at the first and second visits. In the first visit, half the participants will randomly get the first dose of one of the vaccines. In the second visit, six months later, participants will either get the second dose of their initial vaccine or a control vaccine called Tdap, a booster vaccine against tetanus, diphtheria, and whooping cough. This is so no one knows who received one dose of an HPV vaccine and who received two. At each visit, participants will fill out a questionnaire and give a urine sample. They may give blood samples. The older participants will use a swab to collect cervical cells from their vagina.
Breast cancer has become a major public health problem in Latin America, as it is the most common form of cancer among women. Women are more likely to develop breast cancer at younger age, and to be diagnosed at an advanced stage compared to western women. Over the past twenty years, the mortality from breast cancer in Latin America has also been increasing very rapidly, and is currently the leading cause of cancer mortality. Little is known on specific risk factors for premenopausal breast cancer in general, and in Latin America in particular. There is a lack of specific knowledge on tumor molecular and pathological characteristics of breast cancer in Latin America premenopausal women, and this has major consequences on cancer treatment and survival. To improve our understanding on determinants of breast cancer incidence and mortality in young Latin America women and support preventive actions, we implemented an international, population-based multi-center study in Latin America: the PRECAMA study (Molecular Subtypes of Premenopausal Breast Cancer in Latin American Women (PRECAMA): a multicenter population-based case-control study). PRECAMA is coordinated by the International Agency for Research on Cancer (IARC), and is conducted within 4 Latin American countries: Mexico, Costa Rica, Colombia and Chile. Major aims of the project are the following: 1. To develop a multi-centric population-based case-control study on breast cancer in premenopausal women in several countries in Latin America with structured collection of individual, clinical, pathological information and biological specimens, according to strictly controlled protocols 2. To characterize, in these populations, the subtypes of premenopausal breast cancer on the basis of their molecular and pathological phenotypes 3. To improve the identification of specific endogenous/exogenous factors, and disentangle the interplay of these different factors with regard to breast tumor subtypes. 4. Provide advanced training, induce a structuring effect on the breast cancer research community in Latin America and influence the public health agenda regarding the management of breast cancer. The results of our study will be of utmost importance to understand the etiology of breast cancer in Latin America countries, and would provide important information on the role of modifiable exposures for breast cancer prevention.
The purpose of this study is to evaluate the efficacy, safety, and pharmacokinetics of ipatasertib plus abiraterone and prednisone/prednisolone compared with placebo plus abiraterone and prednisone/prednisolone in participants with metastatic castrate-resistant prostate cancer (mCRPC).
The primary objective of this trial is to continue the provision of darunavir/ low-dose ritonavir (DRV/rtv) to adult and pediatric patients who previously received DRV/rtv in the clinical trials TMC114-C211, TMC114-C214, TMC114-TiDP31-C229 or in the pediatric trial TMC114-TiDP29-C232 who continue to benefit from the use of DRV/rtv, in countries where DRV is not commercially available for the subject, is not reimbursed, or cannot be accessed through another source (e.g., access program, governmental program).
The purpose of this study is to assess the efficacy of voclosporin compared with placebo in achieving renal response after 52 weeks of therapy in subjects with active lupus nephritis.
The purpose of this study is to evaluate the clinical consistency of three production lots of the Porcine circovirus (PCV)-free liquid formulation of oral live attenuated human rotavirus (HRV) vaccine and to evaluate the PCV-free liquid formulation of HRV vaccine as compared to the currently licensed lyophilised formulation of the HRV vaccine in terms of immunogenicity, reactogenicity and safety when administered as a two-dose vaccination in healthy infants starting at age 6-12 weeks. No new subjects will be enrolled in the extension phase of the study
This is a randomized, global, multicenter, open-label, Phase 3 clinical study in participants with severe hemophilia A without inhibitors against Factor VIII (FVIII) who are 12 years or older. The study evaluates two prophylactic emicizumab regimens versus no prophylaxis in this population with emphasis on efficacy, safety, and pharmacokinetics.