DHDDS c.*2045T>A
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP 0.54 | GERP 1.9, phastCons 0.002 |
| Non-coding constraint | Z -0.22 | 1 kb window · o/e 1.01 · regional · uncalibrated |
| Overall | ||
| CADD | 9.437 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Ashkenazi Jewishnot grpmax-eligible | 1.61% | 62 |
| African / African-Americangrpmax | 1.03% | 97 |
| Middle Eastern | 0.338% | 296 |
| Remaining individualsnot grpmax-eligible | 0.284% | 353 |
| Admixed American | 0.163% | 612 |
| European (non-Finnish) | 0.0323% | 3,093 |
| South Asian | 0.0207% | 4,824 |
Ashkenazi Jewish shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.
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
- DHDDS
- Coding
- c.*2045T>A
- MANE Select
- NM_205861
- dbSNP
- rs76326144
- Type
- single nucleotide variant
- Location
- chr1:26471176 (GRCh38)
- Gene constraint
- LOEUF 0.536 · pLI 0.91 (gnomAD)
- Structure
- AlphaFold pLDDT 95.01 · 9 PDB
Disease context
retinitis pigmentosa — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatmentsFor Retinitis pigmentosa (Orphanet):
- Inheritance
- Autosomal dominant, Autosomal recessive, Mitochondrial inheritance
- Onset
- Adolescent, Adult, Childhood
- Prevalence
- 1-5 / 10 000 (Europe)
Similar variants
- DHDDS p.Lys42Glu Pathogenic ★★ ⚠ same condition
- DHDDS p.Thr206Ala Likely pathogenic ★★ same condition
- DHDDS p.Arg265Gln Uncertain significance ★★ ⚠ same condition
- DHDDS p.Arg298Pro Uncertain significance ★★ ⚠ same condition
- DHDDS p.Arg306Gln Uncertain significance ★★ ⚠ same condition
- DHDDS p.Asn18Ser Uncertain significance ★★ ⚠ same condition
- DHDDS p.Gln53Glu Uncertain significance ★★ ⚠ same condition
- DHDDS p.Leu282Pro Uncertain significance ★★ ⚠ same condition
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/dhdds-c-star-2045t-a (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown