NCI Definition: An invasive adenocarcinoma characterized by cystic changes and the presence of malignant glandular cells which contain intracytoplasmic mucin. It may arise from the ovary, pancreas, appendix, and lung. 
There is 1 clinical trial for mucinous cystadenocarcinoma, of which 1 is open and 0 are completed or closed. Of the trial that contains mucinous cystadenocarcinoma as an inclusion criterion, 1 is phase 2 (1 open).
Ipilimumab and nivolumab are the most common interventions in mucinous cystadenocarcinoma 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.