STAT3 and ovarian carcinoma: Annexin A3, P-glycoprotein (P-gp), signal transducer and activator of transcription 3 (STAT3), FAS, DNA methyltransferase-I (DNMT-1), multidrug resistance protein 2 (MRP2), ATP 7A, and ATP 7B are exosomal proteins that promote drug resistance in ovarian cancer cells [79, 91–96].