DMD c.9974+6A>C
Uncertain significance
Multiple submitters
Classification
Uncertain significance
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
ultra-rare (popmax 0.023%, mid)
Conditions
1
Duchenne muscular dystrophy
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| Splice region | donor +6 | donor splice region (+6, within the first 6 intronic nt) · inside the BP7-excluded zone |
|---|---|---|
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP -1.8 | GERP -0.82 |
| Non-coding constraint | — | not assessed · autosomes only, so chrX has no window · absence ≠ unconstrained |
| Overall | ||
| CADD | 0.353 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.023%
Middle Eastern · 1/4,341 alleles
Overall
0.000183%
2/1,092,866 alleles · ultra-rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Middle Easterngrpmax | 0.023% | 4,341 |
| Remaining individualsnot grpmax-eligible | 0.00211% | 47,451 |
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
- DMD
- Coding
- c.9974+6A>C
- MANE Select
- NM_004006
- dbSNP
- rs2520020435
- Type
- single nucleotide variant
- Location
- chrX:31182732 (GRCh38)
Disease context
Duchenne muscular dystrophy — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatmentsFor Duchenne muscular dystrophy (Orphanet):
- Inheritance
- X-linked recessive
- Onset
- Childhood
- Prevalence
- 1-9 / 100 000 (Worldwide)
Similar variants
- DMD c.10086+1G>A Pathogenic ★★ same condition
- DMD c.10086+1G>T Pathogenic ★★ same condition
- DMD c.10086+2T>C Pathogenic ★★ same condition
- DMD c.10087-2A>G Pathogenic/Likely pathogenic ★★ same condition
- DMD c.10223+1G>A Pathogenic ★★ same condition
- DMD c.10223+1G>C Pathogenic ★★ same condition
- DMD c.10224-2A>G Likely pathogenic ★★ same condition
- DMD c.10554-2A>G Pathogenic/Likely 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/dmd-c-9974-plus-6a-c (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown