There are about 270 clinical studies being (or have been) conducted in Guatemala. 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.
The purpose of this study is to evaluate the efficacy of pembrolizumab (MK-3745) in the neoadjuvant (prior to surgery) or adjuvant (after surgery) treatment of adults with gastric and gastroesophageal junction (GEJ) adenocarcinoma. The primary hypotheses of this study are that pembrolizumab plus chemotherapy is superior to placebo plus chemotherapy in terms of overall survival (OS), event-free survival (EFS) and pathological complete response (pathCR) rate.
This is a phase IIIb, single arm, open-label, multi-center study to evaluate the safety and tolerability of emicizumab in participants with congenital hemophilia A who have documented inhibitors against Factor VIII (FVIII) at enrollment. Approximately 200 participants, aged 12 or older, will be enrolled in this study and are expected to be enrolled at approximately 85 sites globally. Participants will receive an initial weekly dose of prophylactic emicizumab subcutaneously for 4 weeks, followed by a weekly maintenance dose subcutaneously for the remainder of the 2-year treatment period.
This randomized, double-blind, placebo-controlled, parallel-group study will evaluate the efficacy and safety of crenezumab versus placebo in participants with prodromal to mild AD. Participants will be randomized 1:1 to receive either intravenous (IV) infusion of crenezumab or placebo every 4 weeks (q4w) for 100 weeks. The primary efficacy assessment will be performed at 105 weeks. The participants who do not enter open-label extension will enter for a long term follow-up period for up to 52 weeks after the last crenezumab dose (Week 153).
The objective of this research project is to investigate specific behaviors and exposures related to sugarcane work and their association with non-communicable diseases, specifically Chronic Kidney Disease of Unknown Origin (CKDu) among sugarcane workers in Guatemala. Over the course of the 6-month sugarcane harvest the investigators will assess risk factors for declining kidney function, and also changes in biomarkers of kidney function pre and post work shift of field and factory workers and their possible relationships with dehydration and heat stress. The investigators will also evaluate the effectiveness of an intervention aimed at increasing hydration and reducing heat stress. Finally the investigators will measure biomarkers of exposure and environmental samples for heavy metals, agrochemicals, and infectious disease (Leptospira).
ABSOLVE Biologic Wound Matrix is a combination of recombinant human platelet-derived growth factor BB homodimer (rhPDGF-BB) and a bovine type I collagen wound dressing matrix. ABSOLVE is under development for the treatment of chronic and acute wounds. This study investigates the safety and efficacy of ABSOLVE in chronic diabetic foot ulcers (DFUs).
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).
This is a Phase IIa/b double-blind, placebo-controlled, randomized, parallel group, multicenter study to evaluate the safety and efficacy of RO7123520 as adjunctive therapy in participants with RA who are inadequately responding to standard-of-care (methotrexate and anti-TNF-alpha therapy). Part 1 of the study will evaluate safety. Part 2 will evaluate efficacy and safety. Part 3 will evaluate dose-ranging efficacy. Participants will have the option of continuing to the extension period of the study.
This study is a randomized controlled trial of liquefied petroleum gas (LPG) stove and fuel distribution in 3,200 households in four countries (India, Guatemala, Peru, and Rwanda). Following a common protocol, each intervention site will recruit 800 pregnant women (aged 18-34 years, <20 weeks gestation), and will randomly assign half their households to receive LPG stoves and a 30-month supply of LPG. Controls will receive the same cookstoves and LPG supply at the end of the study. The mother will be followed along with her child until the child is 2 years old. The researchers estimate that 25% of households will have a second, non-pregnant older adult woman (aged 35-64 years) who will also be enrolled at baseline and followed during the 30-month follow-up period. To optimize intervention use, the researchers will implement behavior change strategies informed by previous experiences and formative research in Year 1. This study will assess cookstove use, conduct repeated personal exposure assessments of household air pollution, and collect dried blood spots and urinary samples for biomarker analysis and biospecimen storage. The primary outcomes are low birthweight, pneumonia incidence, and linear growth in the child, and blood pressure in the older adult woman. Secondary outcomes include preterm birth and gross motor development in the child, maternal blood pressure during pregnancy, and endothelial function, respiratory impairment, carcinogenic metabolites, and quality of life in the older adult woman.
The overall objective of this multisite, multicountry Zika in Infants and Pregnancy (ZIP) study is to assess the strength of the association between Zika virus infection (ZIKV) during pregnancy and adverse maternal/fetal outcomes and the risk of vertical transmission. The study will prospectively enroll a cohort of pregnant women during the first trimester of pregnancy and follow them through their pregnancy to identify for clinical evidence of acute ZIKV, while controlling for potential confounders. Outcomes in the women, the developing fetus, and infants will be assessed. All protocol-specified data will be recorded and entered in a central data management system for the purposes of analysis of composite data from the study.
Demonstrate superiority of secukinumab over ustekinumab in treatment of moderate to severe plaque psoriasis.