Is PGAM2 p.Thr212= (c.636G>A) pathogenic?

PGAM2 p.Thr212= (c.636G>A) is classified Likely benign in PGAM2 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2026-02-01). Ultra-rare (popmax 0.065%, amr); Associated with glycogen storage disease due to phosphoglycerate mutase deficiency.

What condition is associated with PGAM2 p.Thr212= (c.636G>A)?

PGAM2 p.Thr212= (c.636G>A) is associated with glycogen storage disease due to phosphoglycerate mutase deficiency (ClinVar).

How common is PGAM2 p.Thr212= (c.636G>A) in the general population?

PGAM2 p.Thr212= (c.636G>A) is ultra-rare (popmax 0.065%, amr) (gnomAD).

PGAM2 p.Thr212=

Q: How is Glycogen storage disease due to phosphoglycerate mutase deficiency inherited?

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

c.636G>A · rs755991460 · VCV786783

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.065%, amr)

Conditions

glycogen storage disease due to phosphoglycerate mutase deficiency

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not looked up on this page · why
Constraint at this position
Conservation	phyloP -8.9	GERP -3.7
Overall
CADD	12.63	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.065% Admixed American · 39/59,998 alleles

Filtering AF 0.0488% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0432%

Overall 0.00291% 47/1,614,088 alleles · ultra-rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.065%	1,538
Remaining individualsnot grpmax-eligible	0.0016%	62,488
South Asian	0.0011%	91,090
European (non-Finnish)	0.000508%	196,674

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: PGAM2
Protein: p.Thr212=
Coding: c.636G>A
MANE Select: NM_001014436 · reported on NM_000290
dbSNP: rs755991460
Type: single nucleotide variant
Location: chr7:44062890 (GRCh38)

Full PGAM2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

glycogen storage disease due to phosphoglycerate mutase deficiency — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Glycogen storage disease due to phosphoglycerate mutase deficiency (Orphanet):

Inheritance: Autosomal recessive
Onset: Adolescent, Childhood

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/pgam2-p-thr212 (accessed [today's date]).

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