Is MYO7A p.Ala26Val (c.77C>T) pathogenic?

MYO7A p.Ala26Val (c.77C>T) is classified Uncertain significance in MYO7A (ClinVar, Single submitter, 1 submitter; last evaluated 2022-09-23). AlphaMissense: likely pathogenic (0.9009); Very rare (popmax 0.00102%, nfe).

How common is MYO7A p.Ala26Val (c.77C>T) in the general population?

MYO7A p.Ala26Val (c.77C>T) is very rare (popmax 0.00102%, nfe) (gnomAD).

What do computational predictors say about MYO7A p.Ala26Val (c.77C>T)?

AlphaMissense predicts likely pathogenic (score 0.9009) — an in-silico prediction, not a clinical call.

MYO7A p.Ala26Val

c.77C>T · rs369125667 · VCV2191756

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9009 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00102%, nfe)

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.9009	likely pathogenic
REVEL	0.801	moderately pathogenic-leaning
SaProt	LLR -12.59	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 3.3	GERP 1.4, phastCons 1
Regional constraint	o/e 0.95	unconstrained · MANE · 84 kb · p 0.0065 · regional, not allelic
Overall
CADD	25.3	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00102% European (non-Finnish) · 12/1,179,312 alleles

Filtering AF 0.000543% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000429%

Overall 0.000806% 13/1,612,124 alleles · very rare exomes 13/1,459,878 · genomes 0/152,246 · joint denominator

Ancestry group	Frequency	1 in
Ashkenazi Jewishnot grpmax-eligible	0.00338%	29,566
European (non-Finnish)grpmax	0.00102%	98,276

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: MYO7A
Protein: p.Ala26Val
Coding: c.77C>T
MANE Select: NM_000260
dbSNP: rs369125667
Type: single nucleotide variant
Location: chr11:77142767 (GRCh38)
Gene constraint: LOEUF 0.995 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 77.73 · 1 PDB
Residue 26: a UniProt-annotated variant site (in ush1b)

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

Similar variants

MYO7A p.Ala26Glu Pathogenic/Likely pathogenic ★★ same residue
MYO7A p.Ala26= Likely benign ★ same residue
MYO7A p.Ala26fs Likely pathogenic ★ same residue
MYO7A p.Ala1288Pro Likely pathogenic ★★★ same type
MYO7A p.Arg1168Gln Pathogenic ★★★ ⚠ same type
MYO7A p.Arg1873Gln Pathogenic ★★★ ⚠ same type
MYO7A p.Arg395Cys Likely pathogenic ★★★ ⚠ same type
MYO7A p.Arg668Cys Pathogenic ★★★ same type

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-ala26val (accessed [today's date]).

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