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Researchers are evaluating a new vaccine called V118C designed to help prevent pneumococcal disease, an infection caused by Streptococcus pneumoniae bacteria. This clinical trial focuses on infants and toddlers to assess how safe and well-tolerated V118C is in young children. The study is a Phase 1, randomized, double-blind trial comparing V118C with an existing vaccine called PCV20. The study is divided into two stages. Stage 1 involves toddlers aged 12 to 15 months who have already received a primary series of three doses of PCV vaccine they will receive a single dose of either V118C or PCV20. Stage 2 includes infants starting at approximately 2 months old who will receive four doses three infant doses plus one toddler dose of either V118C or PCV20. All doses are given as 0.5 mL intramuscular injections. Participants will be monitored closely for adverse events immediately after vaccination, as well as for up to 12 months postvaccination. Researchers will collect blood samples to measure immune responses to the vaccines. They will track both injection site and systemic reactions, serious adverse events, and medically attended events. The study aims to understand both safety and immune response profiles of V118C compared to PCV20 over the course of the dosing schedules and follow-up periods.

Researchers are evaluating changes in bone mineral density in premenopausal women with heavy menstrual bleeding caused by uterine fibroids or moderate-to-severe pain from endometriosis. This Phase 3B, open-label study looks at the effects of continuous treatment with a relugolix combination tablet for up to 48 months 4 years, followed by a 1-year period to monitor bone health after stopping treatment. Participants will take a daily oral relugolix combination tablet containing relugolix 40 mg, estradiol 1 mg, and norethindrone acetate 0.5 mg for 4 years. Bone mineral density will be measured every 6 months using dual-energy X-ray absorptiometry DXA. Some women who have completed a previous related study may join to complete 3 years of treatment. After treatment ends, bone density will be checked again at 6 months and 12 months during the follow-up year. Women in the study will have regular visits for bone density scans and health assessments, including physical and gynecological exams, lab tests, and vital signs. Researchers will track changes in bone density at the spine, hip, and femoral neck throughout treatment and follow-up. They will also monitor for any fractures or adverse events during the 4 years of treatment and the 1-year post-treatment period. Total participation can last up to 5 years including the follow-up.

Researchers are evaluating the safety and effectiveness of Raludotatug Deruxtecan R-DXd in adults with platinum-resistant, high-grade ovarian, primary peritoneal, or fallopian tube cancer. This study includes a Phase 2 dose-optimization part to find the best dose based on safety and effectiveness, followed by a Phase 3 part comparing R-DXd to chemotherapy chosen by the investigator. The study targets tumors that overexpress CDH6, a protein that R-DXd specifically binds to. Participants are randomly assigned to receive intravenous R-DXd at various doses every three weeks or an investigators choice of chemotherapy drugs including paclitaxel, pegylated liposomal doxorubicin, or topotecan. The Phase 2 portion focuses on determining the optimal dose, while the Phase 3 portion compares the recommended dose with standard chemotherapy. Treatments are given through IV infusions according to the assigned group. During the study, participants undergo scheduled visits for drug administration, safety monitoring, and evaluations including imaging scans to assess tumor response. Researchers measure outcomes such as objective response rate, progression-free survival, overall survival, duration of response, symptom changes, and pharmacokinetics over periods up to 40 months. Safety is closely monitored through adverse event tracking and laboratory tests, with participants followed until the studys completion in 2030.

Researchers are evaluating the safety and effects of the study medicine PF-07248144 combined with fulvestrant for treating hormone receptor-positive, HER2-negative advanced or metastatic breast cancer. This study focuses on participants whose breast cancer has worsened after prior treatment with CDK46 inhibitor-based therapy. The trial compares PF-07248144 plus fulvestrant to the current standard treatment involving everolimus and endocrine therapy. Participants will be randomly assigned to one of two groups. One group will take PF-07248144 tablets daily at home in 28-day cycles along with fulvestrant injections administered at the clinic. The other group will receive everolimus tablets daily plus either exemestane tablets or fulvestrant injections, based on the study doctors choice. Treatments will continue according to the schedule for each participant. During the study, participants will undergo regular evaluations including scans to measure tumor response, lab tests, electrocardiograms, and monitoring of side effects. Researchers will track progression-free survival up to about two years, as well as overall survival and response duration up to about five years. Safety and drug levels will also be monitored throughout and after treatment. The total duration of participation may span several years depending on individual outcomes.

Researchers are studying the safety and effects of a medication called PF-08032562 in people with advanced or metastatic breast cancer or colorectal cancer. The study also aims to find the best dose of this medication. Participants in the study may have breast or colorectal cancers that have progressed despite previous treatments or for which no standard therapy is available. This is a phase 1 study focusing on treatment evaluation. Participants will take PF-08032562 by mouth in 28-day cycles. Depending on their specific study group, they may receive PF-08032562 alone or combined with other anti-cancer drugs such as fulvestrant, cetuximab, or a chemotherapy regimen including fluorouracil, oxaliplatin, leucovorin, and bevacizumab. These additional therapies are given by injection or infusion during the treatment cycles. Different doses and schedules of PF-08032562 will be tested in dose escalation and dose expansion parts of the study. During the study, participants will be monitored through blood tests, imaging scans, and assessments of tumor response every 8 to 12 weeks. Researchers will track safety by recording adverse events and laboratory abnormalities from treatment start until 30 days after the last dose or a new therapy begins. They will also measure drug levels in the blood and evaluate tumor control and survival over approximately two years. The total duration of participation may vary depending on treatment response and study completion.

Researchers are evaluating the study medicine PF-08046054 compared to the standard treatment docetaxel in adults with non-small cell lung cancer NSCLC that has PD-L1 expression of 1% or higher. These participants have cancer that has spread or cannot be treated with surgery or definitive radiation and have shown disease progression during or after previous treatments including PD-L1 or PD-1 inhibitors, platinum-based chemotherapy, and targeted therapies for known genomic alterations. The study is a randomized phase 3 trial assessing treatment options for advanced NSCLC. Participants are randomly assigned to one of two groups one receives PF-08046054 as an intravenous IV infusion twice during each 21-day cycle, and the other receives docetaxel as an IV infusion once every 21 days. The study treatment may continue for up to 5 years if the participants cancer responds to therapy. Both treatments are given in cycles, and participants receive the medicine through infusions during clinic visits. During the study, participants will have regular clinic visits to monitor their health and how well the treatment is working. Assessments include measuring overall survival, progression-free survival, tumor response rates, and quality of life through questionnaires. Safety is monitored for adverse events up to 90 days after treatment ends. Blood samples are also taken to study the medicines levels and immune response. The total study duration can be up to 5 years depending on individual responses and outcomes.

Researchers are evaluating PF-08046876, an investigational antibody drug conjugate ADC, in adults diagnosed with advanced cancers of the bladder, lung, head and neck, esophagus, or pancreas. ADCs are designed to target and kill cancer cells specifically. This Phase 1 open-label study aims to explore the safety and effects of this study drug in people with these advanced solid tumors. Participants will receive PF-08046876 through an intravenous infusion. The study includes multiple parts an initial dose escalation phase with different doses and schedules, followed by randomization to two dosing regimens identified as safe in the first part. Tumor-specific groups will receive one safe dosing regimen from the first part. Different groups will receive varied doses and schedules to determine optimal treatment plans. Throughout the study, participants will be monitored for treatment-emergent adverse events and dose-limiting toxicities. Researchers will evaluate response rates, duration of response, progression-free survival, and overall survival for up to several years. Blood samples will assess pharmacokinetics and immune response. Tumor tissue will be analyzed for immune cell changes. Study participation may last multiple years, with safety and response monitored closely during and after treatment.

Researchers are studying primary membranous nephropathy PMN, a kidney condition where harmful autoantibodies build up in the kidney filters, causing damage. This can lead to protein and blood leaking into the urine, swelling, tiredness, and high blood pressure. The study aims to compare how the laboratory-made antibody drug felzartamab works compared to the existing drug tacrolimus in treating PMN, focusing on how many participants achieve complete remission over 104 weeks. Participants will be randomly assigned to receive either felzartamab through intravenous infusions or tacrolimus as oral tablets. Those whose disease worsens or who do not improve may receive additional rescue treatment, including standard immunosuppressive therapy or felzartamab. The study includes an open-label treatment phase and a non-responder treatment phase for those needing rescue therapy. Participants will undergo up to 23 study visits during screening and treatment, which may last up to 104 weeks or 156 weeks if rescue treatment is needed. Researchers will monitor urine protein levels, kidney function, antibody levels, physical health, and side effects. Follow-up visits every 12 weeks will continue if treatment stops early to assess long-term effects and safety.

Researchers are evaluating whether adding the immunotherapy drug durvalumab to the usual chemotherapy regimen can improve outcomes for patients with MammaPrint High 2 Risk MP2 stage II-III hormone receptor positive, HER2 negative breast cancer. This phase III trial focuses on comparing breast cancer event-free survival and other measures between patients receiving chemotherapy alone and those receiving chemotherapy with durvalumab. Immunotherapy may help enhance the bodys immune response against cancer, while chemotherapy works to stop tumor growth in various ways. Participants are first tested for MP2 status using MammaPrint on previously collected tissue. Those with MP2 results are randomized into two groups. One group receives paclitaxel intravenously on days 1 and 8 every 14 days for six cycles, followed by doxorubicin and cyclophosphamide intravenously every 14 days for four cycles. The other group receives the same chemotherapy schedule combined with durvalumab given intravenously over 60 minutes on specific cycles. Mammography and optional tumor tissue and blood sample collections occur during the study. During the study, participants undergo assessments including mammography, tumor biopsies, blood tests, and quality-of-life questionnaires. Researchers measure outcomes such as event-free survival, response rates, relapse-free survival, overall survival, treatment side effects, and patient-reported fatigue and physical health. After treatment completion, participants are followed for up to 10 years to monitor long-term outcomes and survival. Specimens are also banked for future research.

The BEATRIX study focuses on healthy pregnant women aged 49 or younger between 24 and 36 weeks of pregnancy to evaluate the safety and immune response of a group B streptococcus GBS vaccine. Researchers aim to understand how this vaccine works in pregnant women and their babies, assessing various safety measures and immune responses related to GBS. This study is a Phase 3, randomized, placebo-controlled, double-blinded trial sponsored by Pfizer. Participants will receive a single injection of either the GBS vaccine or a placebo saline. After birth, a subset of infants will receive routine vaccines according to each countrys immunization schedule, including vaccines for diphtheria, pneumococcal disease, and others. Some infants will have blood samples taken after completing their primary and toddler vaccine doses to evaluate immune responses. Pregnant participants will visit the study site at least three to four times, with some visits possibly conducted by phone, and may stay involved for up to 14 months, including six months after delivery. Their babies will be followed for about 12 months, with a subset participating for up to 19 months. Researchers will monitor local and systemic reactions, adverse events, and antibody levels in both mothers and infants to assess safety and immunogenicity of the vaccine throughout the study period.