Porto Velho

Researchers are evaluating molnupiravir, an oral medicine designed to stop the COVID-19 virus from multiplying, to see if it can prevent severe illness from COVID-19 in people at high risk of disease progression. The study focuses on adults with confirmed COVID-19 infection who are at increased risk due to age, medical conditions, or other factors. This is a Phase 3 randomized, placebo-controlled, double-blind clinical trial led by Merck Sharp & Dohme LLC. Participants will be randomly assigned to receive either molnupiravir or a matching placebo. Those in the molnupiravir group will take 800 mg orally every 12 hours for 5 days, totaling 10 doses. The same dosing schedule applies to the placebo group. Some participants may also receive remdesivir as part of standard care if clinically appropriate. During the study, participants will be monitored for up to 29 days to assess outcomes such as hospitalization, death, or medically attended visits related to COVID-19. Safety will be evaluated by tracking adverse events and discontinuation due to side effects. Researchers will also measure symptom relief, viral RNA levels, and other health indicators. The study is expected to continue until January 2031.

Researchers are evaluating the efficacy and safety of rilvegostomig compared to pembrolizumab monotherapy as the first-line treatment for patients with metastatic non-small cell lung cancer mNSCLC whose tumors express high levels of PD-L1. This Phase III, randomized, double-blind, multicenter global study focuses on patients with mNSCLC without certain genetic mutations who are suitable for this treatment approach. Participants are randomly assigned to receive either rilvegostomig or pembrolizumab intravenously on Day 1 of each 21-day cycle. The study compares these two drugs over repeated treatment cycles as first-line therapy. Both treatments are biological agents given by infusion, and the study is designed to monitor their effects over up to approximately five years. During the trial, participants will undergo regular assessments including physical exams, imaging scans such as CT or MRI to measure tumor lesions, and laboratory tests to evaluate organ function. Researchers will closely monitor overall survival, progression-free survival, treatment response, duration of response, and patient-reported outcomes on physical functioning and quality of life. Safety and immunogenicity of rilvegostomig will also be evaluated. Participants are followed and assessed for up to five years to gather comprehensive data on treatment effects and long-term outcomes.

Researchers are evaluating the efficacy and safety of combining durvalumab and domvanalimab compared to durvalumab plus placebo in adults with locally advanced Stage III, unresectable non-small cell lung cancer NSCLC whose disease has not progressed after definitive platinum-based concurrent chemoradiotherapy cCRT. This Phase III, randomized, double-blind, placebo-controlled, international study aims to provide new insights into treatment options for this patient population. Participants will receive either durvalumab and domvanalimab or durvalumab plus placebo as intravenous infusions every four weeks, beginning on Day 1 and continuing for up to 12 months. The study includes two groups one receiving the combination of durvalumab and domvanalimab, and the other receiving durvalumab with a placebo. Both treatments are given through infusion to assess their effects on disease progression and safety. During the trial, participants will undergo regular assessments including monitoring progression-free survival for up to 8 years after randomization. Other measures include overall survival, response rates, duration of response, and various time-to-event outcomes related to disease progression and symptom deterioration. Researchers will also evaluate drug concentrations and immune responses approximately 12 weeks after the last dose. Participants can expect scheduled visits for infusions and evaluations as part of this long-term study.

Researchers are evaluating the combination of adagrasib, pembrolizumab, and platinum-doublet chemotherapy compared to placebo plus pembrolizumab and platinum-doublet chemotherapy in adults with previously untreated, locally advanced or metastatic non-squamous non-small cell lung cancer NSCLC carrying the KRAS G12C mutation. This Phase 3 trial aims to assess the efficacy, safety, and tolerability of these treatment combinations in this specific patient group. Participants will receive either adagrasib plus pembrolizumab combined with platinum-doublet chemotherapy or placebo plus pembrolizumab and platinum-doublet chemotherapy. Treatments involve specified doses administered on scheduled days, with the chemotherapy consisting of carboplatin or cisplatin along with pemetrexed. Participants are randomly assigned to one of the two study groups and treatments are blinded to ensure unbiased assessment. Throughout the study, participants will undergo regular evaluations including imaging scans to measure tumor response and progression-free survival, as well as assessments of overall survival. Safety is closely monitored by recording adverse events for up to 90 days after the last dose. Quality of life and symptom assessments are also conducted using validated questionnaires. The study duration includes follow-up for up to seven years to gather comprehensive data on treatment outcomes and participant health.

Researchers are evaluating elacestrant compared to standard endocrine therapies in adults with node-positive, Estrogen Receptor-positive ER, HER2-negative early breast cancer who are at high risk of cancer returning. The study focuses on those who have had prior endocrine therapy and aims to measure how well elacestrant may prevent invasive breast cancer recurrence over five years. Participants are randomly assigned to receive either 345 mg of elacestrant daily for five years or continue their prior standard endocrine therapy, which may include an aromatase inhibitor anastrozole, letrozole, or exemestane or tamoxifen. The trial is open-label, meaning both participants and researchers know which treatment is given. During the study, participants will have regular assessments to monitor cancer recurrence, survival, side effects, and quality of life. Evaluations include questionnaires on health status and physical functioning at baseline, six months, and annually for up to five years. Safety is tracked through adverse event reporting up to five years plus 28 days. The total participation duration can last up to five years with ongoing monitoring and data collection.

Researchers are evaluating the effectiveness and safety of inavolisib combined with Phesgo compared to a placebo combined with Phesgo as maintenance treatment for participants with previously untreated HER2-positive advanced breast cancer that has a PIK3CA mutation. This Phase 3 study focuses on participants with locally advanced or metastatic breast cancer who have completed induction therapy. Participants first receive induction therapy with Phesgo plus taxane-based chemotherapy. Following this, they enter the maintenance phase where they are randomly assigned to receive either inavolisib tablets taken orally once daily for 21 days of each 21-day cycle along with Phesgo administered subcutaneously every 3 weeks, or a matching placebo tablet with Phesgo on the same schedule. Optional endocrine therapy may be given based on the investigators choice according to standard care. Throughout the study, participants undergo regular monitoring including tumor assessments, quality of life questionnaires, and safety evaluations lasting up to approximately 111 months. Key outcomes measured include progression-free survival assessed by investigators, overall survival, response rates, duration of response, and adverse event rates. Plasma concentrations of inavolisib are also measured at specific timepoints. Participants will be followed closely during and after treatment to assess these outcomes over an extended period.

This research aims to evaluate the effectiveness of AZD5335 compared to standard treatments in women with high-grade, platinum-resistant epithelial ovarian, fallopian tube, or primary peritoneal cancer. The study focuses on whether AZD5335 improves progression-free survival PFS among participants with either high or low levels of folate receptor alpha FR. Approximately 1100 adult women will be enrolled and divided into two groups based on their FR levels. Participants will be randomized within each group to receive either AZD5335 or the relevant standard treatment. Those with high FR levels will receive AZD5335 or mirvetuximab soravtansine, while those with low FR levels will receive AZD5335 or a chemotherapy agent chosen by the investigator, including paclitaxel, pegylated liposomal doxorubicin, or topotecan. Treatments are given intravenously, and participants will continue treatment until disease progression or other reasons for stopping. During the study, participants will undergo regular tumor assessments to monitor disease status. Researchers will follow all participants over time to evaluate overall survival. Safety and efficacy data will be reviewed periodically by an independent committee. The primary outcome is progression-free survival, measured for up to about five years. The study completion is expected by late 2029.

Researchers are evaluating the combination of capivasertib with CDK46 inhibitors and fulvestrant in adults with hormone receptor-positive and HER2-negative locally advanced or metastatic breast cancer. This Phase IbIII study aims to determine the safe dose for the combination treatment in the initial Phase Ib part and then compare its effectiveness and safety to standard treatment in the Phase III part in participants who have not received prior endocrine therapy in the advanced setting. In the Phase Ib portion, participants receive capivasertib combined with one of the CDK46 inhibitorspalbociclib, ribociclib, or abemacicliband fulvestrant to establish recommended doses. In the Phase III part, participants are randomly assigned to receive either capivasertib plus fulvestrant with a chosen CDK46 inhibitor palbociclib or ribociclib or fulvestrant with a CDK46 inhibitor alone. Treatments are given in 28-day cycles with specific dosing schedules for each drug, including oral doses of capivasertib and CDK46 inhibitors and injections of fulvestrant. Participants undergo screening and regular monitoring throughout the study, including assessments of treatment side effects, tumor progression, and blood samples for pharmacokinetics and biomarker analysis. The primary outcomes include dose-limiting toxicities and adverse events in Phase Ib and progression-free survival in Phase III, with follow-up lasting up to several years to evaluate overall survival, response rates, physical functioning, and quality of life.

Researchers are developing a registry of Brazilian patients with hereditary cardiovascular diseases by combining clinical information and genetic data. The study aims to identify which genes are most commonly affected and the frequency of these genetic changes within this population. The registry will help advance understanding and healthcare for hereditary heart conditions in Brazils public health system. Participants will be interviewed during their routine medical visits, and their DNA will be collected using buccal swabs for whole genome sequencing. This observational study does not involve any treatment but focuses on gathering detailed genetic and clinical data to better characterize hereditary cardiovascular diseases. The study is planned to run for 30 months starting from April 2025. During the study, participants will provide information through interviews and give DNA samples for sequencing. Researchers will measure diagnostic yield, genetic diversity, and variant frequency over the 30 months. The study does not involve additional interventions beyond data and sample collection, and participants will continue their usual medical care throughout the study period.

Researchers are investigating the effects of a polypill combined with colchicine in people with established atherosclerotic cardiovascular disease ASCVD, a major cause of illness and death worldwide, including Brazil. The trial aims to assess whether this combination can better prevent heart and blood vessel events compared to usual care. The study addresses the need for improved control of cardiovascular risk factors and adherence to treatments in a diverse population. Participants will be randomly assigned to one of four groups cardiovascular polypill plus colchicine, cardiovascular polypill plus placebo, usual care plus colchicine, or usual care plus placebo. The polypill contains fixed doses of valsartan, atorvastatin, and aspirin, taken daily. Colchicine or its placebo is given once daily. The study will last about three years on average, with the goal of evaluating the combined effects of these treatments on cardiovascular health. During the study, participants will be monitored for major adverse cardiovascular and limb events, including heart attacks, strokes, and cardiovascular deaths. Researchers will collect data throughout the trial to assess treatment effects and safety. The study design includes a randomized, quadruple-masked approach to ensure unbiased results. Participants can expect regular evaluations over the study period, which ends around May 2031.