Is MYO7A p.Asp75= (c.225C>T) pathogenic?

MYO7A p.Asp75= (c.225C>T) is classified Uncertain significance in MYO7A (ClinVar, No assertion criteria, 1 submitter; last evaluated 2025-01-22). Very rare (popmax 0.00115%, sas); Associated with Usher syndrome type 1B.

What condition is associated with MYO7A p.Asp75= (c.225C>T)?

MYO7A p.Asp75= (c.225C>T) is associated with Usher syndrome type 1B (ClinVar).

How common is MYO7A p.Asp75= (c.225C>T) in the general population?

MYO7A p.Asp75= (c.225C>T) is very rare (popmax 0.00115%, sas) (gnomAD).

MYO7A p.Asp75=

c.225C>T · VCV4058225

Uncertain significance No assertion criteria

Classification

Uncertain significance

ClinVar

Review

No assertion criteria ☆☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00115%, sas)

Conditions

Usher syndrome type 1B

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 0.23	GERP -0.39, phastCons 0.98
Overall
CADD	12.21	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00115% South Asian · 1/87,334 alleles

Overall 0.000125% 2/1,593,804 alleles · very rare exomes 2/1,441,524 · genomes 0/152,280 · joint denominator

Ancestry group	Frequency	1 in
South Asiangrpmax	0.00115%	87,334
European (non-Finnish)	8.54e-05%	1,171,214

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: MYO7A
Protein: p.Asp75=
Coding: c.225C>T
MANE Select: NM_000260
Type: single nucleotide variant
Location: chr11:77147890 (GRCh38)
Gene constraint: LOEUF 0.995 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 77.73 · 1 PDB
Residue 75: the myosin motor domain

Full MYO7A gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Usher syndrome type 1B — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

MYO7A p.Asp75Glu Uncertain significance ★★ ⚠ same residue
MYO7A p.Asp75His Uncertain significance ★ ⚠ same residue
MYO7A p.Ala1288Pro Likely pathogenic ★★★ same condition
MYO7A p.Arg1168Gln Pathogenic ★★★ ⚠ same condition
MYO7A p.Arg1873Gln Pathogenic ★★★ ⚠ same condition
MYO7A p.Arg395Cys Likely pathogenic ★★★ ⚠ same condition
MYO7A p.Arg668Cys Pathogenic ★★★ same condition
MYO7A p.Arg853His 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/myo7a-p-asp75 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown