Total 25 pts with HER-2 positive/mutations were enrolled….21 (84.0%) pts received 400 mg pyrotinib once daily as initial dose, 2 (8%) pts received 320 mg, 2 (8%) pts received 160 mg...Total 23 pts were eligible for efficacy evaluation, 12 pts achieved PR (4 pts with lung cancer, 4 pts with gastric cancer, 2 pts with colorectal cancer, 2 pts with thymic cancer), 9 pts were SD and 2 pts were PD...The ORR was 52.2% and the DCR was 91.3%...The mPFS was 3.5 months (95%CI: 2.2-5.0 months), mOS was 9.6 months (95%CI: 4.4 months-NR)...The retrospective study showed that pyrotinib showed good efficacy and safety in patients with HER-2 positive/mutation solid tumors...