DHDDS c.542+7C>A
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 8.48e-05%, nfe)
Conditions
1
retinitis pigmentosa 59
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| Splice region | donor +7 | near-intronic (+7 nt from the splice site) · inside the BP7-excluded zone |
|---|---|---|
| SpliceAI | <0.2 | all four deltas below 0.2 · C>G here scores Δ0.22 · evaluated, not missing |
| Constraint at this position | ||
| Conservation | phyloP -4.4 | GERP -3.7 |
| Non-coding constraint | Z 2.37 | 1 kb window · o/e 0.83 · regional · uncalibrated |
| Overall | ||
| CADD | 0.054 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
8.48e-05%
European (non-Finnish) · 1/1,178,716 alleles
Overall
6.85e-05%
1/1,460,370 alleles · very rare
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.542+7C>A
- MANE Select
- NM_205861
- dbSNP
- rs772779004
- Type
- single nucleotide variant
- Location
- chr1:26447667 (GRCh38)
- Gene constraint
- LOEUF 0.536 · pLI 0.91 (gnomAD)
- Structure
- AlphaFold pLDDT 95.01 · 9 PDB
Similar variants
- DHDDS c.658-2A>G Likely pathogenic ★★ same condition
- DHDDS p.Arg205Gln Pathogenic ★★ same condition
- DHDDS p.Arg211Gln Pathogenic ★★ same condition
- DHDDS p.Arg37Cys Pathogenic ★★ same condition
- DHDDS p.Arg37His Pathogenic/Likely pathogenic ★★ same condition
- DHDDS p.Arg37Ser Pathogenic ★★ same condition
- DHDDS p.Gly35Glu Pathogenic/Likely pathogenic ★★ same condition
- DHDDS p.Lys42Glu Pathogenic ★★ ⚠ 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-542-plus-7c-a (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown