Is MAP2 p.Ser311Pro (c.931T>C) pathogenic?

MAP2 p.Ser311Pro (c.931T>C) is classified Uncertain significance in MAP2 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-03-30). AlphaMissense: ambiguous (0.4543); Ultra-rare (popmax 0.0988%, mid).

How common is MAP2 p.Ser311Pro (c.931T>C) in the general population?

MAP2 p.Ser311Pro (c.931T>C) is ultra-rare (popmax 0.0988%, mid) (gnomAD).

What do computational predictors say about MAP2 p.Ser311Pro (c.931T>C)?

AlphaMissense predicts ambiguous (score 0.4543) — an in-silico prediction, not a clinical call.

MAP2 p.Ser311Pro

c.931T>C · rs761272143 · VCV3122778

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.4543 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0988%, mid)

Missense predictors

0/2 damaging

REVEL, SaProt · AlphaMissense no call

Computational evidence

Protein change
AlphaMissense	0.4543	ambiguous
REVEL	0.183	benign-leaning
SaProt	LLR -8.35	tolerated
⇒ REVEL and SaProt both call this tolerated; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.8	GERP 1.4, phastCons 1
Overall
CADD	25.0	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0988% Middle Eastern · 6/6,070 alleles

Filtering AF 0.043% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0293%

Overall 0.00459% 74/1,613,168 alleles · ultra-rare exomes 64/1,461,024 · genomes 10/152,144 · joint denominator

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.0988%	1,012
Admixed American	0.0134%	7,483
Remaining individualsnot grpmax-eligible	0.0112%	8,919
European (non-Finnish)	0.00424%	23,596
South Asian	0.0033%	30,283

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: MAP2
Protein: p.Ser311Pro
Coding: c.931T>C
MANE Select: NM_001375505
dbSNP: rs761272143
Type: single nucleotide variant
Location: chr2:209693101 (GRCh38)
Structure: AlphaFold pLDDT 86.07 · 40 PDB

Full MAP2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

MAP2 p.Ala1074Thr Uncertain significance ★★ ⚠ same type
MAP2 p.Ala752Ser Uncertain significance ★★ ⚠ same type
MAP2 p.Arg1715His Uncertain significance ★★ ⚠ same type
MAP2 p.Val1359Ala Uncertain significance ★★ ⚠ same type
MAP2 p.Ala414Ser Benign/Likely benign ★★ same type
MAP2 p.Asp679= Benign ★★ same type
MAP2 p.Gln1760= Benign/Likely benign ★★ same type
MAP2 p.Glu1129= Benign ★★ 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/map2-p-ser311pro (accessed [today's date]).

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