Is MYO7A p.His253= (c.759C>T) pathogenic?

MYO7A p.His253= (c.759C>T) is classified Conflicting classifications of pathogenicity in MYO7A (ClinVar, Conflicting submitters, 4 submitters; last evaluated 2024-10-07). Ultra-rare (popmax 0.0165%, mid); Associated with Usher syndrome type 1.

What condition is associated with MYO7A p.His253= (c.759C>T)?

MYO7A p.His253= (c.759C>T) is associated with Usher syndrome type 1, autosomal recessive nonsyndromic hearing loss 2, autosomal dominant nonsyndromic hearing loss 11 (ClinVar).

How common is MYO7A p.His253= (c.759C>T) in the general population?

MYO7A p.His253= (c.759C>T) is ultra-rare (popmax 0.0165%, mid) (gnomAD).

How is Usher syndrome inherited?

Typically Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

MYO7A p.His253=

c.759C>T · rs182220009 · VCV796037

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 4 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0165%, mid)

Conditions

Usher syndrome type 1

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 -11	GERP -3.5
Overall
CADD	5.398	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0165% Middle Eastern · 1/6,062 alleles

Filtering AF 0.00143% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00116%

Overall 0.00205% 33/1,611,566 alleles · ultra-rare exomes 29/1,459,192 · genomes 4/152,374 · joint denominator

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.0165%	6,062
South Asian	0.00443%	22,587
Remaining individualsnot grpmax-eligible	0.0032%	31,213
East Asian	0.00223%	44,840
European (non-Finnish)	0.00204%	49,119
Admixed American	0.00168%	59,680

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.His253=
Coding: c.759C>T
MANE Select: NM_000260
dbSNP: rs182220009
Type: single nucleotide variant
Location: chr11:77157302 (GRCh38)
Gene constraint: LOEUF 0.995 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 77.73 · 1 PDB
Residue 253: the myosin motor domain

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

Disease context

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

Also linked: autosomal recessive nonsyndromic hearing loss 2 autosomal dominant nonsyndromic hearing loss 11 Usher syndrome type 1B

For Usher syndrome (Orphanet):

Inheritance: Autosomal recessive
Onset: Childhood, Infancy, Neonatal
Prevalence: 1-9 / 100 000 (Worldwide)

Similar variants

MYO7A p.His253Arg Conflicting classifications of pathogenicity ★ ⚠ same residue
MYO7A p.His253fs Likely pathogenic ★ 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-his253 (accessed [today's date]).

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