PROTEOFORMER is a pipeline for generating a search space of candidate translation products based on ribosome profiling data. The pipeline was published in 2014, but since then, several features have been added. For this project, the PROTEOFORMER pipeline 2.0 was tested on human HCT116 and Jurkat cell ribosome profiling data with all its new features and then compared to raw MS data of both cell lines, validating its use as a proteogenomic tool. In this study, results of 3 proteoform calling methods were combined (classical PROTEOFORMER proteoform calling, PRICE and SPECtre). Afterwards, results were eventually combined with the canonical or splicing-included version of human UniProt. The different described combinations were exported as a FASTA file and used as search space for searching matching MS data.