MAPT and amyotrophic lateral sclerosis: Changes in the material properties of dropletsfrom a liquid-like state to more solid phases, however, have beenlinked to amyloid formation, for example in the case of the ALS/FTD-relatedprotein FUS and also for tau.30,43 It will therefore beinteresting to study how PPIA and other proline isomerases modulatethe maturation kinetics of condensates.