Data from The Cancer Genome Atlas (TCGA https://tcga-data.nci.nih.gov/tcga) on esophageal carcinomas (September 2015) indicate FGFR1 amplification in 11.1% of 45 squamous cell carcinomas with data on copy number alterations, which is also well in line with 8.9% in our study. Here, FGFR1 is linked to squamous cell carcinoma.