AUTHOR=Tímár József , Uhlyarik Andrea TITLE=On-Target Side Effects of Targeted Therapeutics of Cancer JOURNAL=Pathology and Oncology Research VOLUME=Volume 28 - 2022 YEAR=2022 URL=https://www.por-journal.com/journals/pathology-and-oncology-research/articles/10.3389/pore.2022.1610694 DOI=10.3389/pore.2022.1610694 ISSN=1532-2807 ABSTRACT=The concept of precision medicine is based on the identification of hallmarks of cancer to exploit them as drug targets. The basic idea was that in this way therapeutic modalities were going to be more effective and side effects fewer. Since the majority of these novel modalities are not specific for a cancer-related biological process or a cancer-specific (mutant) target protein, it is no surprise that we had to learn new types of side effects, since these therapeutics also affect physiological or pathological processes. Even more, in the case of some of these novel therapies we were able to discover new molecular mechanisms of physiological and pathological processes. Identification of on-target side effects of targeted drugs can help prevent their development or better manage them when they emerge during cancer therapy.