| | TTC21B, TTC21B-AS1 (Q222L) | Single nucleotide variant (missense variant) | not provided +6 more | |
| | TTC21B-AS1, TTC21B (P209L) | Single nucleotide variant (missense variant) | Asphyxiating thoracic dystrophy 4 +7 more | GPathogenic/Likely pathogenic |
| | TTC21B, TTC21B-AS1 (Q192R) | Single nucleotide variant (missense variant) | not provided +5 more | |
| | TTC21B, TTC21B-AS1 (R191H) | Single nucleotide variant (missense variant) | Asphyxiating thoracic dystrophy 4 +3 more | |
| | | Deletion (intron variant) | Asphyxiating thoracic dystrophy 4 +3 more | |
| | | Single nucleotide variant (intron variant) | Asphyxiating thoracic dystrophy 4 +4 more | |
| | | Single nucleotide variant (synonymous variant) | not provided +4 more | |
| | | Single nucleotide variant (synonymous variant) | Nephronophthisis +3 more | |
| | | Single nucleotide variant (synonymous variant) | Jeune thoracic dystrophy +4 more | |
| | TTC21B, TTC21B-AS1 (V146G) | Single nucleotide variant (missense variant) | Jeune thoracic dystrophy +4 more | |
| | TTC21B, TTC21B-AS1 (R123H) | Single nucleotide variant (missense variant) | Nephronophthisis 12 +3 more | |
| | TTC21B, TTC21B-AS1 (I121V) | Single nucleotide variant (missense variant) | Asphyxiating thoracic dystrophy 4 +3 more | |
| | TTC21B, TTC21B-AS1 (H113R) | Single nucleotide variant (missense variant) | Nephronophthisis 12 +3 more | GConflicting classifications of pathogenicity |
| | | Single nucleotide variant (synonymous variant) | Jeune thoracic dystrophy +3 more | |
| | TTC21B, TTC21B-AS1 (R103C) | Single nucleotide variant (missense variant) | Nephronophthisis 12 +3 more | |
| | | Single nucleotide variant (missense variant) | Jeune thoracic dystrophy +3 more | |
| | | Duplication (splice acceptor variant) | Asphyxiating thoracic dystrophy 4 +3 more | |