1. Introduction Nonsense mutations affect about 10% of patients with genetic diseases [1]. They are among the most impactful, because they very often lead to the absence of expression of the mutated gene; a quality control mechanism called nonsense-mediated mRNA decay (NMD) recognizes and rapidly degrades mRNAs carrying a premature termination codon [2,3,4,5]. This mRNA surveillance mechanism is highly regulated [6] and entwined in interactions with various metabolic pathways [7].