Is TGFB2 p.Pro233= (c.699A>G) pathogenic?

TGFB2 p.Pro233= (c.699A>G) is classified Likely benign in TGFB2 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-12-21). Very rare (popmax 0.00446%, eas); Associated with familial thoracic aortic aneurysm and aortic dissection.

What condition is associated with TGFB2 p.Pro233= (c.699A>G)?

TGFB2 p.Pro233= (c.699A>G) is associated with familial thoracic aortic aneurysm and aortic dissection (ClinVar).

How common is TGFB2 p.Pro233= (c.699A>G) in the general population?

TGFB2 p.Pro233= (c.699A>G) is very rare (popmax 0.00446%, eas) (gnomAD).

TGFB2 p.Pro233=

Q: How is Familial thoracic aortic aneurysm and aortic dissection inherited?

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

c.699A>G · VCV4843207

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00446%, eas)

Conditions

familial thoracic aortic aneurysm and aortic dissection

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.73	GERP -2.3
Overall
CADD	5.89	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00446% East Asian · 2/44,854 alleles

Filtering AF 0.000739% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000277%

Overall 0.000372% 6/1,613,934 alleles · very rare exomes 5/1,461,690 · genomes 1/152,244 · joint denominator

Ancestry group	Frequency	1 in
East Asiangrpmax	0.00446%	22,427
European (non-Finnish)	0.000339%	294,992

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: TGFB2
Protein: p.Pro233=
Coding: c.699A>G
MANE Select: NM_003238
Type: single nucleotide variant
Location: chr1:218434393 (GRCh38)
Gene constraint: LOEUF 0.463 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 80.41 · 11 PDB
Residue 233: a UniProt-annotated variant site (in lds4)

Full TGFB2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

familial thoracic aortic aneurysm and aortic dissection — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Familial thoracic aortic aneurysm and aortic dissection (Orphanet):

Inheritance: Autosomal dominant
Onset: Adolescent, Adult, Childhood

Similar variants

TGFB2 p.Pro233Ser Uncertain significance ★★ ⚠ same residue
TGFB2 c.346+1G>T Likely pathogenic ★★ same condition
TGFB2 p.Arg131Ter Pathogenic/Likely pathogenic ★★ same condition
TGFB2 p.Arg299Gln Pathogenic/Likely pathogenic ★★ same condition
TGFB2 p.Arg299Trp Pathogenic/Likely pathogenic ★★ same condition
TGFB2 p.Arg302Cys Pathogenic/Likely pathogenic ★★ same condition
TGFB2 p.Arg302His Pathogenic/Likely pathogenic ★★ same condition
TGFB2 p.Arg320Cys 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/tgfb2-p-pro233 (accessed [today's date]).

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