| | | Single nucleotide variant (splice acceptor variant) | Intellectual disability, autosomal dominant 5 | |
| | | Deletion (frameshift variant) | not provided +2 more | |
| | | Deletion (frameshift variant) | Intellectual disability, autosomal dominant 5 | |
| | SYNGAP1, SYNGAP1-AS1 (G341fs) | Indel (frameshift variant) | Intellectual disability, autosomal dominant 5 +1 more | |
| | SYNGAP1, SYNGAP1-AS1 (G344S) | Single nucleotide variant (missense variant) | Intellectual disability, autosomal dominant 5 +1 more | |
| | SYNGAP1, SYNGAP1-AS1 (Y428*) | Single nucleotide variant (nonsense) | not provided +1 more | |
| | SYNGAP1, SYNGAP1-AS1 (A433fs) | Duplication (frameshift variant) | not provided | |
| | SYNGAP1, SYNGAP1-AS1 (L595fs) | Deletion (frameshift variant) | not provided +1 more | |
| | SYNGAP1, SYNGAP1-AS1 (R621*) | Single nucleotide variant (nonsense) | Intellectual disability, autosomal dominant 5 +2 more | |
| | | Single nucleotide variant (splice donor variant) | not provided +1 more | |
| | SYNGAP1, SYNGAP1-AS1 (Q847* +1 more) | Single nucleotide variant (nonsense) | not provided | |
| | SYNGAP1, SYNGAP1-AS1 (I1000V +1 more) | Single nucleotide variant (missense variant) | Intellectual disability, autosomal dominant 5 | |
| | SYNGAP1, SYNGAP1-AS1 (R1240* +1 more) | Single nucleotide variant (nonsense) | Intellectual disability, autosomal dominant 5 +2 more | |