Is DPP4 p.Asn169Ser (c.506A>G) pathogenic?

DPP4 p.Asn169Ser (c.506A>G) is classified Uncertain significance in DPP4 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-04-19). AlphaMissense: likely benign (0.1059); Very rare (popmax 8.5e-05%, nfe).

How common is DPP4 p.Asn169Ser (c.506A>G) in the general population?

DPP4 p.Asn169Ser (c.506A>G) is very rare (popmax 8.5e-05%, nfe) (gnomAD).

What do computational predictors say about DPP4 p.Asn169Ser (c.506A>G)?

AlphaMissense predicts likely benign (score 0.1059) — an in-silico prediction, not a clinical call.

DPP4 p.Asn169Ser

c.506A>G · VCV3273631

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1059 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 8.5e-05%, nfe)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.1059	likely benign
REVEL	0.351	indeterminate
SaProt	LLR -6.73	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 2.9	GERP 2.7, phastCons 1
Regional constraint	o/e 1.01	unconstrained · MANE · 81 kb · p 0.82 · regional, not allelic
Overall
CADD	21.6	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 8.5e-05% European (non-Finnish) · 1/1,175,804 alleles

Overall 0.000138% 2/1,451,346 alleles · very rare

Ancestry group	Frequency	1 in
Finnishnot grpmax-eligible	0.00156%	63,898
European (non-Finnish)grpmax	8.5e-05%	1,175,804

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: DPP4
Protein: p.Asn169Ser
Coding: c.506A>G
MANE Select: NM_001935
Type: single nucleotide variant
Location: chr2:162038409 (GRCh38)
Gene constraint: LOEUF 0.901 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 96.45 · 121 PDB

Full DPP4 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

DPP4 c.1987+4T>C Benign ★★ same type
DPP4 p.Ala16= Benign ★★ same type
DPP4 p.Gly645= Benign ★★ same type
DPP4 p.Leu27= Benign ★★ same type
DPP4 p.Lys539= Likely benign ★★ same type
DPP4 p.Ser437Thr Benign ★★ ⚠ same type
DPP4 p.Val266Ile Likely benign ★★ ⚠ same type
DPP4 p.Ala654Thr Uncertain significance ★ ⚠ same type

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/dpp4-p-asn169ser (accessed [today's date]).

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