...soft tissue sarcomas (STS)…Chemosensitivity (SI) of STS to doxorubicin (Dox), ifosfamide (Ifo), gemcitabine (Gem), and docetaxel (Doc) was analyzed in vitro. In synovial sarcomas we demonstrated positive correlation of ABCC1 expression with SI (Ifo) and SI (Dox + Ifo) as well as ABCG2 expression gene with SI (Doс).