Is DPP7 p.Arg66Trp (c.196C>T) pathogenic?

DPP7 p.Arg66Trp (c.196C>T) is classified Uncertain significance in DPP7 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-03-23). AlphaMissense: likely benign (0.1861); Very rare (popmax 0.00539%, afr).

How common is DPP7 p.Arg66Trp (c.196C>T) in the general population?

DPP7 p.Arg66Trp (c.196C>T) is very rare (popmax 0.00539%, afr) (gnomAD).

What do computational predictors say about DPP7 p.Arg66Trp (c.196C>T)?

AlphaMissense predicts likely benign (score 0.1861) — an in-silico prediction, not a clinical call.

DPP7 p.Arg66Trp

c.196C>T · rs774949942 · VCV2279492

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1861 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00539%, afr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.1861	likely benign
REVEL	0.238	benign-leaning
SaProt	LLR -8.26	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.12	GERP -2.4
Regional constraint	o/e 1.35	unconstrained · MANE · 416 bp · p 8.2e-05 · regional, not allelic
Overall
CADD	18.69	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 0.00539% African / African-American · 4/74,270 alleles

Filtering AF 0.00176% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00105%

Overall 0.000561% 9/1,603,628 alleles · very rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.00539%	18,568
East Asian	0.00226%	44,262
South Asian	0.00222%	45,006
Remaining individualsnot grpmax-eligible	0.00161%	61,952
European (non-Finnish)	8.5e-05%	1,176,197

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: DPP7
Protein: p.Arg66Trp
Coding: c.196C>T
MANE Select: NM_013379
dbSNP: rs774949942
Type: single nucleotide variant
Location: chr9:137114368 (GRCh38)
Gene constraint: LOEUF 1.707 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 94.44 · 3 PDB
Residue 66: a turn

Full DPP7 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

DPP7 p.Arg17= Likely benign ★★ same type
DPP7 c.322-1G>T Uncertain significance ★ same type
DPP7 p.Ala118Gly Uncertain significance ★ ⚠ same type
DPP7 p.Ala118Val Uncertain significance ★ ⚠ same type
DPP7 p.Ala136Val Uncertain significance ★ ⚠ same type
DPP7 p.Ala139Gly Uncertain significance ★ ⚠ same type
DPP7 p.Ala13Val Uncertain significance ★ ⚠ same type
DPP7 p.Ala158Asp 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/dpp7-p-arg66trp (accessed [today's date]).

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