GPT and skin disorder: Within 3 months after PBT, 4 patients (23.5%) experienced dermatitis (grade 1, 3 [17.6%], and grade 2, 1 [5.9%]); two patients (11.8%) experienced grade 1 elevated alanine aminotransferase levels without evidence of disease progression; 3 patients (17.6%) experienced leukopenia (grade 1, 2 [11.8%], and grade 2, 1 [5.9%]); and one patient (5.9%) experienced grade 1 thrombocytopenia.