EFNA1 and gastric cancer: Zhuo et al. identified lncRNA-GMAN (Gastric Cancer Metastasis Associated) as highly expressed in gastric cancer, and its deletion using the CRISPR/Cas9 system resulted in a reduction of invasiveness and ability to form metastases, improving overall survival in mice (Zibitt et al., 2021; Zhuo et al., 2019).