Expert Systems, an expert in AI-enabled drug discovery, has expanded its collaboration with Eilean Therapeutics as it joins its new PTPN2 inhibitor program, which Eilean recently acquired from Ness Therapeutics Inc in an all-equity transaction.   Protein tyrosine phosphatase non-receptor type 2 (PTPN2), also known as T cell protein tyrosine phosphatase (TC-PTP), is ubiquitously expressed, primarily in hematopoietic and placental cells. As a critical negative regulator of the JAK-STAT pathway, ...