Active clinical trials for "Microsatellite Instability"

FT500 is an off-the-shelf, iPSC-derived NK cell product that can bridge innate and adaptive immunity, and has the potential to overcome multiple mechanisms of immune checkpoint inhibitor (ICI) resistance. The preclinical data provide compelling evidence supporting the clinical investigation of FT500 as monotherapy and in combination with ICI in participants with advanced solid tumors.

This study will be looking at whether MK-3475 (an antibody that blocks negative signals to T cells) is effective (anti-tumor activity) and safe in three different patient populations. These include: 1. patients with MSI positive colon cancer, 2. patients with MSI negative colon cancer and 3. patients with other MSI positive cancers.

The purpose of this study was to assess the safety, tolerability, and efficacy when combining MK-3475 and INCB024360 in participants with certain cancers. This study was conducted in 2 phases, Phase 1 and Phase 2.

Given that there is a significant prevalence of Lynch syndrome among patients with endometrial cancer (about 5% of patients with endometrial cancer), and given there is a known risk of endometrial cancer among patients with endometrial hyperplasia (40% risk of pre-existing occult cancer with endometrial intraepithelial neoplasia), it is hypothesized that a diagnosis of endometrial hyperplasia may herald on-going risk of harboring a Lynch Syndrome gene mutation. The purpose of this study is to examine endometrial hyperplasia specimens and compare the frequency of Lynch Syndrome gene mutations between endometrial hyperplasia and endometrial cancer subjects. This will provide a rationale and opportunity for earlier screening, and reduce colon cancer morbidity and mortality secondary to the Lynch syndrome gene.

This phase II trial studies how well durvalumab works in treating patients with prostate cancer that is resistant to hormones and has spread to other places in the body. Monoclonal antibodies, such as durvalumab, may interfere with the ability of tumor cells to grow and spread.

To determine if the out-of-field ORR is improved with the addition of radiation therapy to anti-PD-1 for patients with MSI-H/dMMR metastatic solid tumors. Determine the rates of in-field tumor control, disease control (stable disease, partial response, complete response), durability of disease response, progression-free survival, overall survival, and to assess quality of life and toxicity. Determine the chronology and profile of the radiation-associated immune response.

Subjects who previously took part in the FT500-101 study and received allogeneic NK cell immunotherapy will take part in this long term follow-up study. Subjects will automatically enroll into study FT-003 once they have withdrawn or complete the parent interventional study. The purpose of this study is to provide long-term safety and survival data for subjects who have participated in the parent study. No additional study drug will be given, but subjects can receive other therapies for their cancer while they are being followed for long term safety in this study.

Deficient mismatch repair (dMMR) or microsatellite instability high (MSI-H) accounts for 4-5% in metastatic colorectal cancer (mCRC). The efficacy and survival of patients with dMMR/MSI-H status received palliative chemotherapy have not clear yet. In this study, the investigators observed the efficacy and survival of dMMR/MSI-H status mCRC patients received palliative first-line chemotherapy.

The molecular mechanisms involved in squamous cell carcinoma of the anus (SCCA) are poorly elucidated. HIV-positive and renal transplant patients are at high risk for developing SCCA, indicating that immune suppression plays a facilitating role. The investigators previously demonstrated that chromosomal instability (CIN) was more prevalent in SCCA of HIV-negative than HIV-positive patients. Hence, the investigators postulate that microsatellite instability (MSI), another molecular pathway, might be a feature of SCCA progression in the HIV-positive population. Study Aims: to determine the prevalence of MSI in paraffin-embedded tumor specimen of 15 patients from the Swiss HIV cohort who underwent surgical excision for SCCA; and eventually, to test our hypothesis by assessing the MSI status of SCCA in 15 recently operated HIV-negative patients. Study Design: The study is designed in two steps: Firstly, the investigators will retrieve tumor specimen from 15 HIV-positive patients, with a biopsy-confirmed diagnosis of SCCA, in three institutions. DNA from tumor and normal tissues will be extracted, and then amplified by PCR. Presence of MSI in tumors will be determined by assessing the microsatellite markers BAT25, BAT26, and CAT25. Secondly, the results of molecular analysis will be compared with a population of HIV-negative patients, with the same tumors, using the same detection technique for MSI.

In this study, we aimed to identify the different histopathological features of tumors with microsatellite instability (MSI) compared to microsatellite stable (MSS) in patients who underwent surgery for colorectal cancer. We also planned to determine how MSI affects prognostic parameters.