Table 2.
Review of reported familial cases of TAND
| Cohort | Number of cases | Type of pathogenic variant | Variant information |
| Schneeweiss et al, 2022 (patients A and B) | Familial=1 Confirmed mosaic=1 |
Nonsense | c558G>A; p.W1861X |
| Torti et al1 | Familial=5 Confirmed mosaic=0 |
N/A | c.2224 C>T; p.Arg742Ter c.2224 C>T; p.Arg742Ter c.3803_3804delGA; p.Arg1268ThrfsTer9 c.3803_3804delGA; p.Arg1268ThrfsTer9 c.3803_3804delGA; p.Arg1268ThrfsTer9 |
| Vetrini et al2 | Familial=5 Confirmed mosaic=0 |
Frameshift Nonsense Frameshift Frameshift Frameshift |
c.310_313dupCCAC; p.Gln106Profs*30 c.2260C>T; p.Gln754* c.2685delG; p.Arg896Glyfs*9 c.5732delC; p.Pro1911Argfs*17 c.5732delC; p.Pro1911Argfs*17 |
| Babbs et al5 | Familial=4 Confirmed mosaic=0 |
N/A | Inversion break intron 1 Inversion break intron 1 c.4670C>T; p.P1557L c.4670C>T; p.P1557L |
N/A, not applicable.TAND, TCF20-associated neurodevelopmental disorder;