Primary Peritoneal Undifferentiated Carcinoma
NCI Definition: An extremely rare carcinoma arising from the peritoneum. It is characterized by the presence of a diffuse malignant infiltrate that is composed of epithelial cells without evidence of glandular or squamous differentiation. 
There are 5 clinical trials for primary peritoneal undifferentiated carcinoma, of which 4 are open and 1 is completed or closed. Of the trials that contain primary peritoneal undifferentiated carcinoma as an inclusion criterion, 2 are phase 1 (2 open) and 3 are phase 1/phase 2 (2 open).
Carboplatin, paclitaxel, and anlotinib are the most common interventions in primary peritoneal undifferentiated carcinoma clinical trials.
2. The AACR Project GENIE Consortium. AACR Project GENIE: powering precision medicine through an international consortium. Cancer Discovery. 2017;7(8):818-831. Dataset Version 6. This dataset does not represent the totality of the genetic landscape; see paper for more information.