Is SRRT p.Arg266His (c.797G>A) pathogenic?

SRRT p.Arg266His (c.797G>A) is classified Uncertain significance in SRRT (ClinVar, Single submitter, 1 submitter; last evaluated 2023-09-20). AlphaMissense: likely benign (0.1075); Very rare (popmax 0.00892%, eas).

How common is SRRT p.Arg266His (c.797G>A) in the general population?

SRRT p.Arg266His (c.797G>A) is very rare (popmax 0.00892%, eas) (gnomAD).

What do computational predictors say about SRRT p.Arg266His (c.797G>A)?

AlphaMissense predicts likely benign (score 0.1075) — an in-silico prediction, not a clinical call.

SRRT p.Arg266His

c.797G>A · rs775122762 · VCV3170249

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1075 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00892%, eas)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL indeterminate

Computational evidence

Protein change
AlphaMissense	0.1075	likely benign
REVEL	0.383	indeterminate
SaProt	LLR -7.54	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL is indeterminate.
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP 12	GERP 2.2, phastCons 1
Regional constraint	o/e 0.76	unconstrained · MANE · 8,778 bp · p 8.1e-06 · regional, not allelic
Overall
CADD	28.0	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — 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 0.00892% East Asian · 4/44,868 alleles

Filtering AF 0.00298% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0018%

Overall 0.000496% 8/1,613,674 alleles · very rare exomes 8/1,461,490 · genomes 0/152,184 · joint denominator

Ancestry group	Frequency	1 in
East Asiangrpmax	0.00892%	11,217
South Asian	0.00439%	22,762

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: SRRT
Protein: p.Arg266His
Coding: c.797G>A
MANE Select: NM_015908
dbSNP: rs775122762
Type: single nucleotide variant
Location: chr7:100884407 (GRCh38)
Gene constraint: LOEUF 0.404 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 66.61 · 6 PDB
Residue 266: an α-helix

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

Similar variants

SRRT c.1042-18C>G Benign ★★ same type
SRRT c.1042-7C>T Benign ★★ same type
SRRT c.2556-9A>T Benign ★★ same type
SRRT p.Arg518= Benign ★★ same type
SRRT p.Glu205= Benign ★★ same type
SRRT p.Leu157= Benign ★★ same type
SRRT p.Leu265= Benign ★★ same type
SRRT p.Ala190Val Uncertain significance ★ ⚠ 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/srrt-p-arg266his (accessed [today's date]).

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