JAG1 and renal cell carcinoma: found that hypoxic RCC cells secrete exosomes packaged with lncHILAR, which are taken up by normoxic RCC cells, and promote normoxic RCC cell invasion and metastasis via ceRNA for the miR‐613/206/1–1‐3p/Jagged‐1/Notch/CXCR4 axis.34