SLC12A3 and gastrointestinal stromal tumor: Conversely, kinase activity increased in eight substrates (5.6%) in NCC-DFSP1-C1, two substrates (1.4%) in NCC-DFSP3-C1, five substrates (3.5%) in NCC-DFSP4-C1, eight substrates (5.6%) in NCC-DGFP5-C1, and nine substrates (6.3%) in GIST-T1.