Is SATB2 p.Ala140= (c.420C>T) pathogenic?

SATB2 p.Ala140= (c.420C>T) is classified Likely benign in SATB2 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2026-01-28). Ultra-rare (popmax 0.0178%, eas); Associated with Inborn genetic diseases.

What condition is associated with SATB2 p.Ala140= (c.420C>T)?

SATB2 p.Ala140= (c.420C>T) is associated with Inborn genetic diseases, chromosome 2q32-q33 deletion syndrome (ClinVar).

How common is SATB2 p.Ala140= (c.420C>T) in the general population?

SATB2 p.Ala140= (c.420C>T) is ultra-rare (popmax 0.0178%, eas) (gnomAD).

SATB2 p.Ala140=

c.420C>T · rs202223477 · VCV756669

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0178%, eas)

Conditions

Inborn genetic diseases

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 0.83	GERP 2.4, phastCons 1
Overall
CADD	12.54	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0178% East Asian · 8/44,880 alleles

Filtering AF 0.00884% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00641%

Overall 0.00378% 61/1,614,068 alleles · ultra-rare exomes 55/1,461,814 · genomes 6/152,254 · joint denominator

Ancestry group	Frequency	1 in
East Asiangrpmax	0.0178%	5,610
Middle Eastern	0.0165%	6,060
Admixed American	0.015%	6,669
Remaining individualsnot grpmax-eligible	0.0064%	15,626
European (non-Finnish)	0.00322%	31,052
African / African-American	0.00133%	75,014

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: SATB2
Protein: p.Ala140=
Coding: c.420C>T
MANE Select: NM_001172509
dbSNP: rs202223477
Type: single nucleotide variant
Location: chr2:199381747 (GRCh38)
Gene constraint: LOEUF 0.077 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 66.87 · 3 PDB
Residue 140: the cmp domain

Full SATB2 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

Also linked: chromosome 2q32-q33 deletion syndrome

Similar variants

SATB2 c.1174-2A>G Pathogenic ★★ same condition
SATB2 c.474-2A>G Pathogenic ★★ same condition
SATB2 c.597+1G>A Pathogenic/Likely pathogenic ★★ same condition
SATB2 c.700+1G>A Likely pathogenic ★★ same condition
SATB2 p.Arg239Ter Pathogenic ★★ same condition
SATB2 p.Arg283Ter Pathogenic ★★ same condition
SATB2 p.Arg389Cys Pathogenic/Likely pathogenic ★★ same condition
SATB2 p.Arg389Leu 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/satb2-p-ala140 (accessed [today's date]).

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