| | KIF21B, LOC129932203 (V1323I +1 more) | Single nucleotide variant (missense variant) | not provided | |
| | | Single nucleotide variant (missense variant) | not provided | |
| | | Single nucleotide variant (missense variant) | not provided | |
| | | Single nucleotide variant (missense variant) | not provided | |
| | | Single nucleotide variant (intron variant) | not provided | |
| | | Single nucleotide variant (missense variant) | KIF21B-associated neurodevelopmental disorder | |
| | KIF21B, LOC126805976 (M1413T +1 more) | Single nucleotide variant (missense variant) | not specified | |
| | KIF21B, LOC129932203 (M1319L +1 more) | Single nucleotide variant (missense variant) | not provided | |
| | KIF21B, LOC126805976 (A1416T +1 more) | Single nucleotide variant (missense variant) | not specified | |
| | KIF21B, LOC129932203 (W1320* +1 more) | Single nucleotide variant (nonsense) | not provided | |
| | KIF21B, LOC126805976 (T1447M +1 more) | Single nucleotide variant (missense variant) | not specified | |
| | | Single nucleotide variant (missense variant) | KIF21B-related disorder | |
| | KIF21B, LOC126805976 (V1458M +1 more) | Single nucleotide variant (missense variant) | not specified | |
| | KIF21B, LOC126805976 (G1398S +1 more) | Single nucleotide variant (missense variant) | not provided | |
| | | Single nucleotide variant | not provided | |
| | KIF21B, LOC126805976 (V1422I +1 more) | Single nucleotide variant (missense variant) | KIF21B-related Neurodevelopmental disorder | |
| | | Translocation | not specified | |