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All currently existing longevity measures are surrogate endpoints that have not been prospectively validated against actual mortality and aging outcomes. The 100-Year Human Aging Study is a prospective, pragmatic, observational trial that addresses this gap by enrolling participants in comprehensive clinical screening and following them longitudinally until death to determine which measurements - alone and in combination - are predictive of mortality, serious disease, and functional disability. The study prioritizes dynamic measurements: the physiological, cognitive, social, and environmental capacities that change with aging and are most likely to carry predictive signal for mortality and functional outcomes. These include cardiorespiratory fitness (cardiopulmonary exercise testing with ventilatory threshold analysis), strength (grip, explosive power, functional movement), mobility and balance, neurocognitive performance, sensory function (vision, hearing, smell, light touch), and metabolic function (oral glucose tolerance, continuous glucose monitoring), in addition to other testing. Structural and imaging assessments include body composition and bone mineral density by DEXA, echocardiography, resting and stress electrocardiography, spirometry, retinal fundus photography, and vascular ultrasound. Laboratory measures are drawn on-site and processed through a CLIA-certified reference laboratory. Complete medical, surgical, family, social, occupational, and environmental histories are obtained at each visit. Participation ranges from single-service visits - including standalone DEXA, cardiopulmonary exercise testing, and physician consultation - to the full two-visit comprehensive screening battery. All participation pathways contribute clinical data to the longitudinal mortality and aging outcomes linkage framework regardless of service level. Participants are encouraged to return for repeat testing to build longitudinal health trajectories across the lifespan. At enrollment and across longitudinal follow-up, the study platform generates individualized investigational constructs including biological age estimate, predicted death age, and predicted cause of death profile. These are explicitly investigational hypotheses, not validated clinical standards. Their predictive validity relative to actual mortality, aging outcomes, and functional disability is a central scientific question this study is designed to answer - both for individual measures and for composite multi-system models. All data are archived in their highest-dimensional raw form to preserve the ability to apply future analytical methods retroactively. Participants are followed with periodic contact and offered repeat screening throughout the lifespan. Longitudinal outcomes ascertainment includes all-cause mortality, cause-specific mortality, incident serious health events, chronic disease diagnosis, functional independence, disability status, and health behavior change.

Researchers are evaluating the survival rates of ceramic dental implants in patients who have missing or hopeless teeth. This observational cohort study aims to compare the outcomes between one-piece ceramic dental implants and the two-piece variant. The study also seeks to identify the complications related to the implant procedures and differences between the two implant types. The study involves different models of CeraRoot ceramic dental implants, including various sub-variants of one-piece and two-piece designs. The research is conducted at two dental centers located in Barcelona, Spain, and Boulder, Colorado, USA. The implants are intended for fully grown men and women requiring dental reconstruction, especially those with metal allergies or chronic illnesses related to metal allergies. Participants will be monitored for survival rate outcomes from enrollment through the end of treatment, which lasts 12 months or more. The study includes clinical assessments of implant performance, complications, and overall patient outcomes. Researchers will track and compare the implant survival rates and any procedure-related issues during the follow-up period.

Researchers are evaluating the safety and effects of a medicine called disitamab vedotin for adults with advanced breast cancer that is hard to treat and has spread in the body. This study focuses on participants whose tumors express HER2 and who have received previous treatments for their advanced breast cancer. The goal is to understand how well this medicine works and its safety in these patients through a Phase 1b/2 open-label study. All participants will receive disitamab vedotin intravenously (IV) once every two weeks at the study clinic. They will continue the treatment until they or their doctor decide to stop, which could be due to cancer progression, side effects, or personal choice. During treatment, study visits occur every two weeks. After stopping treatment, participants will have follow-up visits about every six weeks, and later follow-up phone calls approximately every twelve weeks. Participants will undergo evaluations including assessments of their cancer response by the study doctors, following recognized criteria. The study team will monitor the participants for up to about two years or until their disease progresses or they pass away. This includes safety monitoring and collecting information about the medicine’s effects to determine its safety and effectiveness.

Researchers are investigating how well retatrutide works and how safe it is for relieving chronic low back pain in adults who are overweight or have obesity. This Phase 3 study focuses on people with this specific type of ongoing back pain and a body mass index (BMI) of 27 or higher. Participants will be followed for about 80 weeks to assess treatment effects. Participants will receive either retatrutide or a placebo, both given by subcutaneous injection once a week. The study is randomized and double-blind, meaning neither participants nor researchers know who receives the active drug or placebo. This design helps compare the effects of retatrutide against no active treatment over the study period. During the study, researchers will monitor changes in pain intensity using a numeric rating scale and track body weight changes from the start of the study up to 72 weeks. Participants will undergo regular assessments to evaluate safety and treatment impact. The entire participation will last around 80 weeks, allowing careful observation of long-term effects and safety.

Researchers are evaluating whether tucatinib combined with trastuzumab and mFOLFOX6 works better than the standard treatments for people with HER2 positive metastatic colorectal cancer, which is cancer that has spread or cannot be removed by surgery. This phase 3 study also aims to identify the side effects that may occur with this drug combination. Participants must have HER2 positive disease confirmed by testing and measurable cancer according to specific criteria. Participants will be randomly assigned to one of two groups. One group will receive tucatinib taken orally twice daily along with intravenous trastuzumab and the mFOLFOX6 chemotherapy regimen, which includes oxaliplatin, leucovorin or levoleucovorin, and fluorouracil given by IV every two weeks. The other group will receive standard care, which could be mFOLFOX6 alone or combined with either bevacizumab or cetuximab, both given by IV on specific schedules. Treatment continues as per the study protocol. During the study, participants will be monitored for progression-free survival up to about three years using imaging reviewed by independent experts. Researchers will assess side effects and disease response. Participants must be able to provide tumor tissue samples for testing and have a good performance status. The study includes brain imaging to check for metastases and monitors safety closely throughout the treatment period.

Researchers are evaluating two treatment combinations for patients with melanoma that has spread to the brain and has a specific BRAF-V600 mutation. This phase II trial compares encorafenib, binimetinib, and nivolumab against ipilimumab and nivolumab to determine which approach better controls and shrinks brain metastases from melanoma. The study also aims to assess overall survival, response rates, treatment duration, and side effects of each regimen. Participants are randomly assigned to one of two groups. One group receives encorafenib orally once daily, binimetinib orally twice daily, and nivolumab intravenously every 28 days. The other group receives nivolumab intravenously and ipilimumab intravenously during the first four cycles, with cycles every 21 days initially, then every 28 days thereafter. Treatment continues unless the disease worsens or side effects become unacceptable. After treatment ends, participants have follow-up visits every six months for two years, then yearly until three years after starting the study. During the trial, participants undergo brain MRIs to monitor tumor response using standardized criteria. Imaging, tumor tissue, spinal fluid, stool, and blood samples are collected for research. Safety and effectiveness are carefully assessed through scans, physical exams, lab tests, and side effect monitoring. Progression-free survival up to three years after randomization is the main outcome. Participants remain in the study for about three years with periodic evaluations to track their health and disease status.

Researchers are evaluating the safety and effects of the medicine PF-07248144 combined with fulvestrant for treating hormone receptor-positive, HER2-negative advanced or metastatic breast cancer. This type of breast cancer involves cancer cells that grow in response to hormones like estrogen and progesterone but have little or no HER2 protein. The study focuses on people whose breast cancer worsened after treatment with cyclin dependent kinase (CDK) 4/6 inhibitor therapy. The trial is a phase 3, open-label, randomized study comparing PF-07248144 plus fulvestrant to other therapies chosen by doctors. Participants will receive either PF-07248144 tablets daily at home in 28-day cycles combined with fulvestrant injections at the clinic, or the usual treatment of everolimus tablets with endocrine therapy (either exemestane or fulvestrant). The study doctor will help decide the hormone therapy before starting treatment. The trial compares the experiences of those taking PF-07248144 plus fulvestrant with those receiving standard treatments to assess safety and effectiveness. During the study, researchers will monitor participants for disease progression or death, using blinded independent central review based on standard tumor response criteria. The main outcome measure is progression-free survival for up to about 2 years from randomization. Regular assessments, including clinical visits for injections and evaluations, will help track treatment effects and safety throughout the study.

Researchers are evaluating a new medicine called PF-08634404 combined with chemotherapy for people aged 18 and older who have locally advanced or metastatic gastric, gastroesophageal junction, or esophageal adenocarcinoma. The study includes participants who have not received prior treatment for advanced or metastatic disease and are in good health based on medical tests. This research is designed as a Phase 2/3 trial to learn about safety, response, and compare this new treatment to an approved therapy called nivolumab plus chemotherapy. The study has two parts: the first part assesses the safety and response to PF-08634404 with chemotherapy, and the second part compares this combination to nivolumab with chemotherapy. Treatments are given intravenously in repeated cycles. Participants receive either PF-08634404 plus chemotherapy or nivolumab plus chemotherapy based on the study phase and group assignment. During the study, participants undergo regular evaluations including medical tests to monitor organ function and safety. Researchers will measure treatment response using RECIST 1.1 criteria, track adverse events, and assess progression-free survival and overall survival over approximately four years. Follow-up continues through 90 days after the last treatment to monitor side effects and overall health.

Researchers are investigating how changes in fat tissue affect the risk of heart and metabolic diseases in adults with obesity. The study focuses on adipocyte-derived extracellular vesicles (Ad-EVs), tiny particles that may act as signals in the body and serve as markers of fat tissue health. They are exploring whether higher levels of Ad-EVs are linked to poorer blood vessel function and if weight loss can reduce Ad-EVs and improve this function. Participants with obesity will take part in a 12-week weight loss program guided by a nutrition specialist, following a calorie-reduced diet to achieve a 6-10% loss in body weight. The study has two phases: Phase 1 includes adults with BMI both below and above 25 kg/m2, while Phase 2 includes those with BMI above 25 kg/m2. During the study, researchers will measure blood vessel responses and levels of circulating Ad-EVs at around 2 weeks in Phase 1 and around 17 weeks in Phase 2. Throughout the study, participants will undergo assessments of blood flow in the forearm in response to specific compounds and blood tests to measure Ad-EVs. These measures will be taken at scheduled visits to track changes. The study will monitor participants' health and adherence to the diet, aiming to understand the relationship between weight loss, Ad-EVs, and blood vessel function in adults with obesity.

Researchers are evaluating the effects of cannabis and cannabinoid use on cancer-related symptoms in adults newly diagnosed with breast, colorectal, melanoma, non-Hodgkin lymphoma, or non-small cell lung cancer. This study focuses on patients who are planning to receive or have recently started systemic cancer treatments such as chemotherapy and immune checkpoint inhibitors (ICIs) targeting PD-1, PD-L1, or CTLA-4. The goal is to understand how cannabis use may be associated with symptom changes over time. Participants are enrolled in a non-interventional study where no experimental treatment is given. They complete surveys about their symptoms and cannabis use, and their medical records are reviewed regularly. The study tracks cancer-related symptoms monthly for up to 12 months after enrollment, allowing researchers to observe symptom patterns during ongoing cancer treatment. An optional substudy is available at select sites for patients with non-small cell lung cancer receiving paclitaxel and ICIs. During the study, participants complete online surveys in English or Spanish at their convenience, either at home or in clinic. Medical records are examined to gather information on treatments and health status. The main outcome measured is cancer-related symptoms, assessed monthly for one year. Safety monitoring includes ensuring participants have an expected life expectancy of at least six months and are not enrolled in hospice. The study aims to enroll 2000 patients across multiple sites in the United States.