ARID1A deficiency activates OSM-STAT3 axis in endometrial cancer, creating vulnerability to JAK/STAT3 inhibition

Li-Jie Chen & Joong Sup Shim et al. · 2026-02-11

ARID1A, a key component of the SWI/SNF chromatin remodeling complex, is a tumor suppressor frequently inactivated in many cancer types, including endometrial cancer. Exploiting ARID1A deficiency has emerged as a therapeutic strategy in these types of cancer. We here employed a synthetic lethal drug screen for ARID1A and found that JAK/STAT3 pathway is a therapeutic vulnerability in ARID1A-deficient endometrial cancer. Inhibition of JAK/STAT3 selectively inhibited the growth of ARID1A deficient endometria cancer cells
TL;DR

It is found that JAK/STAT3 pathway is a therapeutic vulnerability in ARID1A-deficient endometrial cancer and OSM-STAT3-PLK1 axis inhibition presents a new therapeutic approach for endometrial cancer with ARID1A loss.

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Authors
Li-Jie Chen, Changxiang Shi, Eun Ju Yang, Guowen Ren, Shishi Tao, Yue Pu, Xiumei Zhang, Xin Shen, Changjie Wu, Joong Sup Shim