Window of Opportunity Study of Pembrolizumab in Early Stage, High Grade Obesity-driven Endometrial Cancer

Summary

Participation Requirements

Description

The primary objective of the trial is to measure the change in number and phenotype of tumor-infiltrating lymphocytes, including delineation of effector and regulatory T cells, before and after one cycle of pembrolizumab treatment. Other correlative secondary objectives include investigation of asso...

The primary objective of the trial is to measure the change in number and phenotype of tumor-infiltrating lymphocytes, including delineation of effector and regulatory T cells, before and after one cycle of pembrolizumab treatment. Other correlative secondary objectives include investigation of associations among pre-treatment TIL numbers, clonality of TILs and change in number and phenotype of TILs with samples collected after pembrolizumab treatment between MSI and DNA polymerase (POLE) ultramutated ECs versus MSI low/stable ECs versus copy number high (CNH) ECs, among others. To assess the complex interplay between obesity, molecular subtype, the microbiome and immune regulation, gut, vaginal and uterine microbiota profiles will be characterized and potential associations with body mass index (BMI), pre-treatment TIL numbers, clonality of TILs and change in the number and phenotype of TILs will be investigated. Secondary clinical objectives include (1) of the pathologic response rate after one cycle of pembrolizumab following hysterectomy and surgical staging in stage I/II, serous/clear cell EC and stage III, G3 (serous, clear cell or endometrioid histologies) EC and (2) characterization of the toxicity profile of pembrolizumab pre-hysterectomy and in combination with paclitaxel and carboplatin as adjuvant therapy for EC.

Tracking Information