Is MEN1 p.Ala307Val (c.920C>T) pathogenic?

MEN1 p.Ala307Val (c.920C>T) is classified Uncertain significance in MEN1 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-07-31). AlphaMissense: likely benign (0.1001); Very rare (popmax 0.00223%, eas); Associated with multiple endocrine neoplasia type 1.

What condition is associated with MEN1 p.Ala307Val (c.920C>T)?

MEN1 p.Ala307Val (c.920C>T) is associated with multiple endocrine neoplasia type 1 (ClinVar).

How common is MEN1 p.Ala307Val (c.920C>T) in the general population?

MEN1 p.Ala307Val (c.920C>T) is very rare (popmax 0.00223%, eas) (gnomAD).

How is Multiple endocrine neoplasia type 1 inherited?

Typically Autosomal dominant, Not applicable (Orphanet). A genetic counselor can assess individual risk for a family.

What do computational predictors say about MEN1 p.Ala307Val (c.920C>T)?

AlphaMissense predicts likely benign (score 0.1001) — an in-silico prediction, not a clinical call.

MEN1 p.Ala307Val

c.920C>T · rs1278139327 · VCV2993613

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1001 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00223%, eas)

Conditions

multiple endocrine neoplasia type 1

Computational evidence

Protein change
AlphaMissense	0.1001	likely benign
REVEL	0.432	indeterminate
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 12	GERP 1.1, phastCons 1
Regional constraint	o/e 0.61	unconstrained · MANE · 4,962 bp · p 4.4e-20 · regional, not allelic
Overall
CADD	22.3	PHRED · no single calibrated threshold — expert panels disagree

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

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM A312V vs ClinVar A307V) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00223% East Asian · 1/44,884 alleles

Overall 6.84e-05% 1/1,461,860 alleles · very rare

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: MEN1
Protein: p.Ala307Val
Coding: c.920C>T
MANE Select: NM_001370259
dbSNP: rs1278139327
Type: single nucleotide variant
Location: chr11:64806361 (GRCh38)
Gene constraint: LOEUF 0.206 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 85.13 · 69 PDB
Residue 307: the 'interaction with fancd2' region; an α-helix

Full MEN1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

multiple endocrine neoplasia type 1 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Multiple endocrine neoplasia type 1 (Orphanet):

Inheritance: Autosomal dominant, Not applicable
Onset: All ages
Prevalence: 1-9 / 100 000 (Europe)

Similar variants

MEN1 p.Ala307= Likely benign ★★ same residue
MEN1 p.Ala307Asp Conflicting classifications of pathogenicity ★ same residue
MEN1 p.Ala307Pro Uncertain significance ★ same residue
MEN1 c.1049+1G>A Pathogenic ★★ same condition
MEN1 c.1049+1G>C Pathogenic ★★ same condition
MEN1 c.1049+2T>C Pathogenic/Likely pathogenic ★★ same condition
MEN1 c.1350+1G>A Pathogenic ★★ same condition
MEN1 c.1351-2A>C Pathogenic/Likely pathogenic ★★ 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/men1-p-ala307val (accessed [today's date]).

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