Univariate and multifactorial Cox regression analyses were performed, and 12 immune-related lncRNAs were identified as having an important influence on endometrial cancer: ELN-AS1, AC103563.7, PCAT19, AF131215.5, LINC01871, AC084117.1, NRAV, SCARNA9, AL049539.1, POC1B-AS1, AC108134.4, and AC019080.5. Here, PCAT19 is linked to endometrial cancer.