There are about 373 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 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).
In this study, the investigators will be using a smartphone application that the investigators developed to guide community health workers through the clinical assessment of patients with diabetes including collection of demographic data and past medical history, assessment of medication history, adherence, and adverse effects, measurement of glycemic control, screening for complications, medication administration and titration, and patient counseling.
The study will compare the efficacy and safety of pembrolizumab plus trastuzumab in combination with standard of care (SOC) chemotherapy versus trastuzumab in combination with SOC chemotherapy in participants with HER2-positive gastric cancer. The primary hypotheses of the study are that pembrolizumab plus trastuzumab in combination with chemotherapy is superior to trastuzumab plus chemotherapy in terms of 1) progression free survival (PFS) per Response Evaluation Criteria in Solid Tumors 1.1 (RECIST 1.1) as assessed by blinded independent central review (BICR), and 2) overall survival (OS).
The purpose of this study was to establish safety and efficacy of ligelizumab in adolescent and adult subjects with Chronic Spontaneous Urticaria (CSU) who remain symptomatic despite standard of care treatment by demonstrating better efficacy over omalizumab and over placebo. The study population consisted of 1,072 male and female subjects aged ≥ 12 years who were diagnosed with CSU and who remained symptomatic despite the use of H1-antihistamines. This was a multi-center, randomized, double-blind, active- and placebo-controlled, parallel-group study. There was a screening period of up to 28 days, a 52 week double-blind treatment period, and a 12 week post-treatment follow-up period.
This study is a prospective, multicenter, open-label, single-arm effectiveness and safety study in participants with progressive multiple sclerosis (PMS).
The investigators propose to assess the needs, barriers, and knowledge gaps of hypertension control programs in the national health care systems of the Central America 4 region LMIC (CA-4: Guatemala, Honduras, El Salvador, and Nicaragua); to conduct a cluster randomized trial to test the effect of a multilevel and multicomponent intervention program leveraging an existing subnational primary healthcare system in Guatemala, on blood pressure (BP) control among hypertensive patients; and to evaluate the adaptability, feasibility, fidelity, and sustainability of implementing the program in the primary health care systems of the CA-4 region. The comprehensive intervention, which includes protocol-based treatment using a standard BP management algorithm, team-based collaborative care, BP audit and feedback, home BP monitoring, and health coaching on antihypertensive medication adherence and lifestyle modification, will last for 18 months. This implementation research study presents high public health impact because it will generate urgently needed data on effective, practical, and sustainable intervention strategies aimed at reducing BP related disease burden in Central America and other low- and middle-income countries.
The purpose of this study is to evaluate the long-term safety and efficacy of pembrolizumab (MK-3475) in participants from previous Merck pembrolizumab-based parent studies who transition into this extension study. This study will consist of three phases: 1) First Course Phase, 2) Survival Follow-up Phase or 3) Second Course Phase. Each participant will transition to this extension study in one of the following three phases, depending on the study phase they were in at the completion of the parent study. Participants who were in the First Course Phase of study treatment with pembrolizumab or lenvatinib in their parent study will enter the First Course Phase of this study and complete up to 35 doses or more every 3 weeks (Q3W) or 17 doses or more every 6 weeks (Q6W) of study treatment with pembrolizumab or a pembrolizumab-based combination or lenvatinib according to arm assignment. Participants who were in the Follow-up Phase in the parent study (post-treatment or Survival Follow-up Phase) will enter the Survival Follow-up Phase of this study. Participants who were in the Second Course Phase in their parent study will enter Second Course Phase of this study and complete up to 17 doses Q3W or 8 doses Q6W of study treatment with pembrolizumab or a pembrolizumab-based combination according to arm assignment. Any participant originating from a parent trial where crossover to pembrolizumab was permitted upon disease progression may be eligible for 35 doses as Q3W or 17 doses Q6W of pembrolizumab (approximately 2 years), if they progress while on the control arm and pembrolizumab is approved for the indication in the country where the potential eligible crossover participant is being evaluated.
This study proposes to investigate the association of nutritional status of a children assessed by body mass index (BMI), triceps skinfold thickness (TSFT), and mid upper arm circumference (MUAC), with body composition, measured by dual-energy X-ray absorptiometry (DEXA), in 60 children undergoing treatment of ALL at Unidad Nacional de Oncologia Pediatrica (UNOP), in Guatemala City, Guatemala. The study also aims to establish normative values of body composition in children residing in an LMIC by examining 160 healthy siblings of children under treatment, and to measure habitual physical activity in children with acute lymphoblastic leukemia (ALL) at diagnosis and during therapy.
The primary objectives of this study are to evaluate the efficacy of gefapixant (MK-7264) in reducing cough frequency as measured over a 24-hour period, and to determine the safety and tolerability of gefapixant. The primary hypothesis is that at least one dose of gefapixant is superior to placebo in reducing coughs per hour (over 24 hours) at Week 24.
This study will examine the safety and efficacy of pembrolizumab (MK-3475) in combination with chemotherapy in children and young adults with newly diagnosed classical Hodgkin Lymphoma (cHL) who are slow early responders (SERs) to frontline chemotherapy.