Is SAMD9 p.Asp255= (c.765T>C) pathogenic?

SAMD9 p.Asp255= (c.765T>C) is classified Benign/Likely benign in SAMD9 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2026-02-01). Rare (popmax 0.125%, eas); Associated with Inborn genetic diseases.

What condition is associated with SAMD9 p.Asp255= (c.765T>C)?

SAMD9 p.Asp255= (c.765T>C) is associated with Inborn genetic diseases (ClinVar).

How common is SAMD9 p.Asp255= (c.765T>C) in the general population?

SAMD9 p.Asp255= (c.765T>C) is rare (popmax 0.125%, eas) (gnomAD).

SAMD9 p.Asp255=

c.765T>C · rs201988689 · VCV713225

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

rare (popmax 0.125%, 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 0.41	GERP -4, phastCons 0.054
Overall
CADD	4.515	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.125% East Asian · 56/44,836 alleles

Filtering AF 0.0987% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0893%

Overall 0.00446% 72/1,613,996 alleles · rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.125%	801
Remaining individualsnot grpmax-eligible	0.0112%	8,929
South Asian	0.00769%	13,011
Admixed American	0.00167%	60,000
European (non-Finnish)	8.47e-05%	1,179,998

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: SAMD9
Protein: p.Asp255=
Coding: c.765T>C
MANE Select: NM_017654
dbSNP: rs201988689
Type: single nucleotide variant
Location: chr7:93105333 (GRCh38)
Gene constraint: LOEUF 1.773 · pLI 0.03 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 83.79 · 10 PDB
Residue 255: an α-helix

Full SAMD9 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

Similar variants

SAMD9 p.Ala1057Val Uncertain significance ★★ ⚠ same condition
SAMD9 p.Ala1066Thr Uncertain significance ★★ ⚠ same condition
SAMD9 p.Ala1069Thr Uncertain significance ★★ ⚠ same condition
SAMD9 p.Ala1082Gly Uncertain significance ★★ ⚠ same condition
SAMD9 p.Ala1102Asp Uncertain significance ★★ ⚠ same condition
SAMD9 p.Ala1195Asp Uncertain significance ★★ ⚠ same condition
SAMD9 p.Ala123Ser Uncertain significance ★★ ⚠ same condition
SAMD9 p.Ala1290Val Uncertain significance ★★ ⚠ 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/samd9-p-asp255 (accessed [today's date]).

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