A mosaic case was also detected corresponding to an 11-year-old patient with a molecular diagnosis of lissencephaly and subcortical band heterotopia (OMIM: *601545, patient GM86) with a mosaic PAFAH1B1 variant NM_000430.3:c.869_870del p. (Tyr290Phefs*5) detected in 25.8% of the reads (Fig. 4A). This evidence concerns the gene PAFAH1B1 and lissencephaly spectrum disorders.