APOB and metabolic dysfunction-associated steatotic liver disease: The physiological roles of the ubiquitously expressed PC7 (gene PCSK7), the seventh member of the family [12], remained obscure for a long time—however, very recently, Sachan et al. [13] demonstrated that in mice, liver PC7 plays a critical role in enhancing apolipoprotein B (apoB) levels, and the silencing of its expression provided a promising treatment for diet-induced metabolic dysfunction-associated steatotic liver disease (MASLD), a devastating pathology that affects at least 25% the population worldwide [14].