Is TPP2 c.784+6C>G pathogenic?

TPP2 c.784+6C>G is classified Uncertain significance in TPP2 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-12-03). Very rare (popmax 0.00269%, afr); Associated with Evans syndrome, immunodeficiency, and premature immunosenescence associated with tripeptidyl-peptidase II deficiency.

How common is TPP2 c.784+6C>G in the general population?

TPP2 c.784+6C>G is very rare (popmax 0.00269%, afr) (gnomAD).

TPP2 c.784+6C>G

Q: What condition is associated with TPP2 c.784+6C>G?

TPP2 c.784+6C>G is associated with Evans syndrome, immunodeficiency, and premature immunosenescence associated with tripeptidyl-peptidase II deficiency (ClinVar).

VCV3621271

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00269%, afr)

Conditions

Evans syndrome, immunodeficiency, and premature immunosenescence associated with tripeptidyl-peptidase II deficiency

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
Splice region	donor +6	donor splice region (+6, within the first 6 intronic nt) · inside the BP7-excluded zone
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.082	GERP -2.7
Non-coding constraint	Z 1.08	1 kb window · o/e 0.92 · regional · uncalibrated
Overall
CADD	7.729	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00269% African / African-American · 2/74,486 alleles

Filtering AF 0.000446% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000167%

Overall 0.000249% 4/1,608,058 alleles · very rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.00269%	37,243
Admixed American	0.0017%	58,722
European (non-Finnish)	8.49e-05%	1,177,906

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: TPP2
Coding: c.784+6C>G
MANE Select: NM_001330588
Type: single nucleotide variant
Location: chr13:102623046 (GRCh38)
Gene constraint: LOEUF 0.29 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 91.98

Full TPP2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Evans syndrome, immunodeficiency, and premature immunosenescence associated with tripeptidyl-peptidase II deficiency — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

TPP2 p.Ala619Thr Uncertain significance ★★ ⚠ same condition
TPP2 p.Ala648Asp Uncertain significance ★★ ⚠ same condition
TPP2 p.Arg1072Gln Uncertain significance ★★ ⚠ same condition
TPP2 p.Arg893Cys Uncertain significance ★★ ⚠ same condition
TPP2 p.Asn1192Ser Uncertain significance ★★ ⚠ same condition
TPP2 p.Asn1227Ser Uncertain significance ★★ ⚠ same condition
TPP2 p.Asp86His Uncertain significance ★★ ⚠ same condition
TPP2 p.Cys1231Tyr 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/tpp2-c-784-plus-6c-g (accessed [today's date]).

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