TBCD p.Thr997=
c.2991G>A · rs1014471246 · VCV1321140
Conflicting classifications of pathogenicity
Conflicting submitters
Classification
Conflicting classifications of pathogenicity
ClinVar
Review
Conflicting submitters ★☆☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
very rare (popmax 0.0011%, sas)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation/SpliceAI carries the signal. | ||
| Splicing | ||
| SpliceAI | Δ0.34 | donor loss · deltas |
|---|---|---|
| Pangolin | Δ0.51 | loss · gain 0.02 · agrees with SpliceAI · independent |
| Constraint at this position | ||
| Conservation | phyloP 5.7 | GERP 1.2, phastCons 1 |
| Overall | ||
| CADD | 18.88 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0011%
South Asian · 1/91,070 alleles
Filtering AF
0.000542%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.000428%
Overall
0.00081%
13/1,605,026 alleles · very rare
exomes 12/1,452,812 · genomes 1/152,214 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| South Asiangrpmax | 0.0011% | 91,070 |
| European (non-Finnish) | 0.00102% | 98,321 |
Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.
Variant & gene context
- Gene
- TBCD
- Protein
- p.Thr997=
- Coding
- c.2991G>A
- MANE Select
- NM_005993
- dbSNP
- rs1014471246
- Type
- single nucleotide variant
- Location
- chr17:82929500 (GRCh38)
- Gene constraint
- LOEUF 0.763 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 90.45 · 6 PDB
Similar variants
- TBCD p.Thr997Met Uncertain significance ★ ⚠ same residue
- TBCD c.1224-2A>G Pathogenic/Likely pathogenic ★★ same type
- TBCD c.2007-2A>G Likely pathogenic ★★ same type
- TBCD p.Ala475Thr Pathogenic/Likely pathogenic ★★ same type
- TBCD p.Ala554Val Pathogenic/Likely pathogenic ★★ same type
- TBCD p.Arg113Ter Pathogenic/Likely pathogenic ★★ same type
- TBCD p.Arg303Ter Pathogenic/Likely pathogenic ★★ same type
- TBCD p.Arg323Ter Pathogenic/Likely pathogenic ★★ same type
Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →
Cite Sugi Variant
Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/tbcd-p-thr997 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown