The final part of our study creates a convergent framework for the elongase-mediated spinocerebellar ataxias SCA38 (by ELOVL5 p.G230V) and SCA34 (by ELOVL4 p.W246G), demonstrating by direct structural comparison that ELOVL5 G230V and ELOVL4 W246G are position-equivalent pathogenic missense variants. This evidence concerns the gene ELOVL4 and Spinocerebellar ataxia type 38.