Supplementary Material Additional file 1 Clinical involvement on specific functional systems. Click here for file Additional file 2 Table with primers sequences and amplification conditions. Click here for file Additional file 3 Table with URLs for biocomputational analysis. Click here for file Additional file 4 Haplotype analysis of the GFAP genomic region by SNPs array (ILLUMINA HumanCytoSNP-12 BeadChip). Individuals are numbered according to the pedigree in Figure 1A. Click here for file Additional file 5 Table with predictions of pathogenicity for GFAP p.R430H change. Click here for file Additional file 6 Tables with Endeavour prioritization and the list of genes with homozygous, compound heterozygous or X-linked variants in patient 2. Click here for file Additional file 7 Western-blot analysis of control fibroblasts treated with tubacin, a specific inhibitor of HDAC6. Click here for file