|
Case | Sex | Age at follow-up | Mutation | Mode of inheritance | Epileptic | Intellectual disability | Speech delay | Cortical dysgenesis (MRI) |
|
This study | Female | 8 years and 9 months | c.751A > T, p.Asn251Tyr | De novo | Yes | Severe | Can repeat words, cannot count or communicate | Bilateral thickening of the Guri of the lobes of the cerebral hemispheres, the cortex |
Patient 1 | Female | 21 years | c.1160 T > C; p.Leu387Pro | De novo | Yes | Severe | Not available | Severe posterior predominant pachygyria/agyria (posterior agyria, frontal pachygyria), thickened cortex |
Patient 2 | Male | 18 months | c.275A > G; p.Tyr92Cys | De novo | Yes | Severe | Not available | Severe posterior predominant pachygyria/agyria (posterior agyria, frontal pachygyria), thickened cortex |
Patient 3 | Female | 31 years | c.991A > C; p.Thr331Pro | Father’s DNA not available | Yes | Moderate | Not available | Posterior pachygyria, moderate posterior subcortical band heterotopia |
Patient 4 | Male | 33 years | c.63C > A; p.Phe21Leu | De novo | No | Severe | Only sounds, no speech | Posterior predominant pachygyria (posterior frontal lobe and parieto-occipital cortex) |
Patient 5 | Male | 21 years | c.985G > T; p.Asp329Tyr | Father’s DNA not available | Yes | Severe | Nonverbal | Diffuse agyria |
Patient 6 | Female | 19 months | c.776C > T; p.Ser259Leu | De novo | Yes | Not available | Delayed | Posterior predominant pachygyria (mild over frontal lobes, moderate over posterior lobes), cortex 10-13 mm thick |
Patient 7 | Female | 14 years | c.776C > T; p.Ser259Leu | De novo | Yes | Not available | Nonverbal | Posterior predominant pachygyria, sparse cells over occipital lobes, cortex 13-15 mm thick |
Patient 8 | Female | 11 years and 6 months | c.776C > T; p.Ser259Leu | Germline mosaicism in parent | Yes | Moderate | 50 words | Posterior predominant pachygyria (mild over frontal lobe, moderate over temporal and occipital lobes), cortex 6-13 mm thick |
Patient 9 | Male | 9 years and 6 months | c.776C > T; p.Ser259Leu | Germline mosaicism in parent | Yes | Moderate | Nonverbal | Posterior predominant pachygyria (mild over frontal lobe, moderate over temporal and occipital lobes), cortex >15 mm thick |
Patient 10 | Male | 15 years | c.769A > T; p.Ile257Phe | De novo | Yes | Moderate | 5 word sentences | Posterior predominant pachygyria (almost normal over frontal lobes, pachygyria over perisylvian and occipital lobes), cortex 6-10 mm thick |
Patient 11 | Female | 18 months | c.776C > T; p.Ser259Leu | De novo | Yes | Severe | Nonverbal | Posterior predominant pachygyria (mild over frontal lobe, moderate over temporal and occipital lobe, deep parietal lobe infolding) |
Patient 12 | Female | 10 years | c.202G > A; p.Asp68Asn | De novo | No | Moderate | Normal | Posterior predominant pachygyria, band heterotopia, nodular heterotopia |
Patient 13 | Male | 6 months | c1021C > T; p.Arg341Trp | De novo | Yes | Moderate global delay | Moderate global delay | Reduced cortical sulci and gyri |
|