There are about 244 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.
QT interval prolongation and neutropenia are considered to be important identified risks for ribociclib. The approved dosing regimen of ribociclib is 600 mg daily (QD) on a 3 weeks on/1 week off schedule. The purpose of the study is to explore whether a reduced dosing regimen of 400 mg ribociclib orally QD 3 weeks on/1 week off may decrease the risk of QTc prolongation without compromising the efficacy of ribociclib in combination with a non-steroidal aromatase inhibitor (NSAI) in pre- and postmenopausal women with hormone receptor-positive (HR-positive), HER2-negative advanced breast cancer (aBC) who have not received prior therapy for advanced disease.
This is a Phase III, randomized, double-blind, placebo-controlled, multi-center international study assessing the activity of durvalumab and chemotherapy administered prior to surgery compared with placebo and chemotherapy administered prior to surgery in terms of pathological complete response.
This study will evaluate the pharmacokinetics, safety, and efficacy of atezolizumab subcutaneous (SC) compared with atezolizumab intravenous (IV) in participants with locally advanced or metastatic Non-Small Cell Lung Cancer (NSCLC) who have not been exposed to cancer immunotherapy (CIT) and for whom prior platinum-based therapy has failed. The study is comprised of two parts, as follows: A dose-finding part (Part 1, Phase Ib) will aim to identify the dose of atezolizumab SC to be tested in Part 2. A dose-confirmation part (Part 2, Phase III, randomized) will aim to confirm that the dose moved forward from Part 1 yields drug exposure that is comparable to that of atezolizumab IV.
This phase IIIb trial compares a single dose of the Cervarix vaccine in girls to 3 doses of the Gardasil vaccine in young women for the prevention of human papillomavirus (HPV) infection. Cervarix is a vaccine used to prevent cervical cancer caused by HPV types 16 and 18. Gardasil is vaccine used to prevent cervical, vulvar, and vaginal cancer caused by HPV types 16 and 18 and genital warts caused by HPV types 6 and 11. Giving only one dose of the Cervarix vaccine in girls may work the same as 3 doses of the Gardasil vaccine in young women in preventing HPV infection and ultimately, cervical and other HPV-related cancers. Currently, many women around the world cannot get HPV vaccines because they are too expensive. If this trial can show one dose given to young girls is enough to prevent cancer, more girls might be able to get the vaccine.
The purpose of this study is to assess the efficacy and safety of pembrolizumab (MK-3475) versus placebo in combination with neoadjuvant (pre-surgery) chemotherapy and adjuvant (post-surgery) endocrine therapy in the treatment of adults who have high-risk early-stage estrogen receptor-positive, human epidermal growth factor receptor 2-negative (ER+/HER2-) breast cancer. The primary study hypotheses are: 1) pembrolizumab is superior to placebo, both in combination with the protocol-specified neoadjuvant anticancer therapy, as assessed by pathological Complete Response (pCR) rate defined by the local pathologist, and 2) pembrolizumab is superior to placebo (both in combination with the protocol-specified neoadjuvant and adjuvant anticancer therapies) as assessed by Event-Free Survival (EFS) as determined by the investigator. The study is considered to have met its primary objective if pembrolizumab is superior to placebo with respect to either pCR (ypT0/Tis ypN0) or EFS.
The purpose of this study is to evaluate the efficacy of pembrolizumab (MK-3745) in combination with chemotherapy (Cisplatin combined with 5-Fluorouracil [FP regimen] or oxaliplatin combined with capecitabine [CAPOX regimen]) versus placebo in combination with chemotherapy (FP or CAPOX regimens) in the treatment of human epidermal growth factor receptor 2 (HER2) negative advanced gastric or GEJ adenocarcinoma in adult participants. The primary hypotheses of this study are that pembrolizumab plus chemotherapy is superior to placebo plus chemotherapy in terms of overall survival (OS).
This study is a prospective, multicenter, open-label, single-arm effectiveness and safety study in participants with progressive multiple sclerosis (PMS).
This study is extending follow up of women who participated in the Costa Rica Vaccine Trial (CVT) and received one dose or two doses of the human papillomavirus (HPV) vaccine, along with a group of women who received three doses. It also studies the stability of HPV defenses in these groups of women for up to 20 years after initial vaccination. Studying samples of blood in the laboratory may provide information on how long one, two, and three doses of the vaccine provide protection against HPV. The results of this study may also help researchers learn whether one dose of HPV vaccine is enough to protect against HPV.
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 main purpose of the current study will be to provide real - world evidence regarding the safety and effectiveness of secukinumab in the management of patients with moderate to severe chronic plaque psoriasis.