Is TRRAP p.Asp1603= (c.4809C>T) pathogenic?

TRRAP p.Asp1603= (c.4809C>T) is classified Benign/Likely benign in TRRAP (ClinVar, Multiple submitters, 3 submitters; last evaluated 2025-11-09). Rare (popmax 0.106%, eas).

How common is TRRAP p.Asp1603= (c.4809C>T) in the general population?

TRRAP p.Asp1603= (c.4809C>T) is rare (popmax 0.106%, eas) (gnomAD).

TRRAP p.Asp1603=

c.4809C>T · rs3735364 · VCV2657703

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

rare (popmax 0.106%, eas)

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
REVEL	0.204	benign-leaning
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -1.1	GERP -3.5, phastCons 0.002
Overall
CADD	4.851	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.106% East Asian · 47/44,214 alleles

Filtering AF 0.082% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0735%

Overall 0.0148% 233/1,577,968 alleles · rare

Ancestry group	Frequency	1 in
Ashkenazi Jewishnot grpmax-eligible	0.443%	226
East Asiangrpmax	0.106%	941
Remaining individualsnot grpmax-eligible	0.0428%	2,339
Finnishnot grpmax-eligible	0.00316%	31,658
European (non-Finnish)	0.00274%	36,456
African / African-American	0.00274%	36,537
South Asian	0.00235%	42,607

Ashkenazi Jewish 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: TRRAP
Protein: p.Asp1603=
Coding: c.4809C>T
MANE Select: NM_001375524
dbSNP: rs3735364
Type: single nucleotide variant
Location: chr7:98949437 (GRCh38)
Gene constraint: LOEUF 0.115 · pLI 1.00 · ClinGen HI 1/3 (gnomAD)
Residue 1603: an α-helix

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

Similar variants

TRRAP p.Arg1035Gln Pathogenic/Likely pathogenic ★★ same type
TRRAP p.Glu1104Gly Pathogenic/Likely pathogenic ★★ same type
TRRAP p.Glu1106Lys Likely pathogenic ★★ same type
TRRAP p.Met3318Val Pathogenic/Likely pathogenic ★★ same type
TRRAP p.Val1030Ile Likely pathogenic ★★ same type
TRRAP c.2622+3A>G Uncertain significance ★★ same type
TRRAP c.7176+4A>G Uncertain significance ★★ same type
TRRAP c.8247+5G>T 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/trrap-p-asp1603 (accessed [today's date]).

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