Is PGAP2 p.Arg246Trp (c.736C>T) pathogenic?

PGAP2 p.Arg246Trp (c.736C>T) is classified Uncertain significance in PGAP2 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-07-14). AlphaMissense: likely benign (0.1863); Very rare (popmax 0.00659%, sas); Associated with Inborn genetic diseases.

What condition is associated with PGAP2 p.Arg246Trp (c.736C>T)?

PGAP2 p.Arg246Trp (c.736C>T) is associated with Inborn genetic diseases (ClinVar).

How common is PGAP2 p.Arg246Trp (c.736C>T) in the general population?

PGAP2 p.Arg246Trp (c.736C>T) is very rare (popmax 0.00659%, sas) (gnomAD).

What do computational predictors say about PGAP2 p.Arg246Trp (c.736C>T)?

AlphaMissense predicts likely benign (score 0.1863) — an in-silico prediction, not a clinical call.

PGAP2 p.Arg246Trp

c.736C>T · rs543741663 · VCV2237650

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1863 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00659%, sas)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL indeterminate

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.1863	likely benign
REVEL	0.334	indeterminate
SaProt	LLR -8.20	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL is indeterminate.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 2.4	GERP -1.3, phastCons 1
Regional constraint	o/e 0.88	unconstrained · MANE · 14 kb · p 0.023 · regional, not allelic
Overall
CADD	25.1	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.

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM R185W vs ClinVar R246W) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00659% South Asian · 6/91,080 alleles

Filtering AF 0.00286% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00198%

Overall 0.00291% 47/1,614,162 alleles · very rare exomes 43/1,461,868 · genomes 4/152,294 · joint denominator

Ancestry group	Frequency	1 in
South Asiangrpmax	0.00659%	15,180
Admixed American	0.00333%	30,012
Remaining individualsnot grpmax-eligible	0.0032%	31,252
European (non-Finnish)	0.00305%	32,778
African / African-American	0.00133%	75,034

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: PGAP2
Protein: p.Arg246Trp
Coding: c.736C>T
MANE Select: NM_014489
dbSNP: rs543741663
Type: single nucleotide variant
Location: chr11:3825047 (GRCh38)
Gene constraint: LOEUF 0.871 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 90.00

Full PGAP2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

PGAP2 p.Arg246Gln Likely pathogenic ★ ⚠ same residue
PGAP2 p.Arg246Leu Likely pathogenic ★ ⚠ same residue
PGAP2 p.Ala187Thr Uncertain significance ★★ ⚠ same condition
PGAP2 p.Ala33Thr Uncertain significance ★★ ⚠ same condition
PGAP2 p.Arg238Cys Uncertain significance ★★ ⚠ same condition
PGAP2 p.Glu204Lys Uncertain significance ★★ ⚠ same condition
PGAP2 p.Leu161Phe Uncertain significance ★★ ⚠ same condition
PGAP2 p.Val183Met Uncertain significance ★★ ⚠ 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/pgap2-p-arg246trp (accessed [today's date]).

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