Is BORCS8 p.His108Arg (c.323A>G) pathogenic?

BORCS8 p.His108Arg (c.323A>G) is classified Uncertain significance in BORCS8 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-01-20). AlphaMissense: likely benign (0.0642); Very rare (popmax 0.00196%, amr).

How common is BORCS8 p.His108Arg (c.323A>G) in the general population?

BORCS8 p.His108Arg (c.323A>G) is very rare (popmax 0.00196%, amr) (gnomAD).

What do computational predictors say about BORCS8 p.His108Arg (c.323A>G)?

AlphaMissense predicts likely benign (score 0.0642) — an in-silico prediction, not a clinical call.

BORCS8 p.His108Arg

c.323A>G · VCV3825117

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0642 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00196%, amr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0642	likely benign
REVEL	0.071	moderately benign-leaning
SaProt	LLR -5.03	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 3.3	GERP 1.7, phastCons 1
Regional constraint	o/e 1.00	unconstrained · MANE · 11 kb · p 0.96 · regional, not allelic
Overall
CADD	20.6	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 0.00196% Admixed American · 1/50,964 alleles

Overall 0.000129% 2/1,550,556 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00196%	50,964
African / African-American	0.00137%	73,032

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: BORCS8
Protein: p.His108Arg
Coding: c.323A>G
MANE Select: NM_001145784
Type: single nucleotide variant
Location: chr19:19182576 (GRCh38)
Gene constraint: LOEUF 1.104 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 92.74

Full BORCS8 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

BORCS8 p.Glu68Ter Likely pathogenic ★ same type
BORCS8 p.Ala25Gly Uncertain significance ★ ⚠ same type
BORCS8 p.Arg40His Uncertain significance ★ ⚠ same type
BORCS8 p.Arg55Cys Uncertain significance ★ ⚠ same type
BORCS8 p.Arg55Leu Uncertain significance ★ ⚠ same type
BORCS8 p.Arg85His Uncertain significance ★ ⚠ same type
BORCS8 p.Arg85Leu Uncertain significance ★ ⚠ same type
BORCS8 p.Arg98Trp 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/borcs8-p-his108arg (accessed [today's date]).

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