Is DSPP p.Asp1074Ala (c.3221A>C) pathogenic?

DSPP p.Asp1074Ala (c.3221A>C) is classified Uncertain significance in DSPP (ClinVar, Single submitter, 1 submitter; last evaluated 2024-01-24). AlphaMissense: likely benign (0.3045); Ultra-rare (popmax 0.0281%, eas); Associated with Inborn genetic diseases.

What condition is associated with DSPP p.Asp1074Ala (c.3221A>C)?

DSPP p.Asp1074Ala (c.3221A>C) is associated with Inborn genetic diseases (ClinVar).

How common is DSPP p.Asp1074Ala (c.3221A>C) in the general population?

DSPP p.Asp1074Ala (c.3221A>C) is ultra-rare (popmax 0.0281%, eas) (gnomAD).

What do computational predictors say about DSPP p.Asp1074Ala (c.3221A>C)?

AlphaMissense predicts likely benign (score 0.3045) — an in-silico prediction, not a clinical call.

DSPP p.Asp1074Ala

c.3221A>C · rs202210195 · VCV3085999

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.3045 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0281%, eas)

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.3045	likely benign
REVEL	0.127	moderately benign-leaning
SaProt	LLR -12.65	damaging
⇒ SaProt calls this damaging; AlphaMissense and REVEL do not.
Splicing
SpliceAI	—	not looked up on this page · why
Constraint at this position
Conservation	phyloP 2.6	GERP -0.25, phastCons 0.054
Regional constraint	o/e 0.38	unconstrained · MANE · 513 bp · p 9.7e-18 · regional, not allelic
Overall
CADD	17.84	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 0.0281% East Asian · 8/28,430 alleles

Filtering AF 0.0139% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0102%

Overall 0.0148% 114/770,166 alleles · ultra-rare

Ancestry group	Frequency	1 in
Finnishnot grpmax-eligible	0.0495%	2,022
East Asiangrpmax	0.0281%	3,554
European (non-Finnish)	0.0122%	8,223
South Asian	0.011%	9,130
Ashkenazi Jewishnot grpmax-eligible	0.00997%	10,034
Remaining individualsnot grpmax-eligible	0.00835%	11,983
Admixed American	0.00261%	38,306

Finnish shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

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: DSPP
Protein: p.Asp1074Ala
Coding: c.3221A>C
dbSNP: rs202210195
Type: single nucleotide variant
Location: chr4:87615883 (GRCh38)

Full DSPP 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

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/dspp-p-asp1074ala (accessed [today's date]).

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