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ETFA c.963+1del

rs746488455 · VCV2597

Conflicting classifications of pathogenicity Conflicting submitters
Classification
Conflicting classifications of pathogenicity
ClinVar
Review
Conflicting submitters ★☆☆☆
ClinVar · 6 submitters
Consequence
canonical splice-site (±1/±2)
predicted LoF
gnomAD v4.1
Rare
very rare (popmax 0.00302%, nfe)
Conditions
3
Glutaric acidemia type 2A

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequencecanonical splice-site (±1/±2)predicted loss-of-function
Splicing
Splice regiondonor +1canonical splice dinucleotide (donor +1) · inside the BP7-excluded zone
SpliceAI—not assessed · substitutions only
Constraint at this position
ConservationphyloP 11GERP 1.5, phastCons 1
Non-coding constraintZ 1.011 kb window · o/e 0.93 · regional · uncalibrated
Overall
CADD35.0PHRED · no single calibrated threshold — expert panels disagree

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.00302% European (non-Finnish) · 35/1,159,854 alleles
Filtering AF 0.00219% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00194%
Overall 0.00239% 38/1,591,856 alleles · very rare
Ancestry group Frequency 1 in
Remaining individualsnot grpmax-eligible 0.00486% 20,581
European (non-Finnish)grpmax 0.00302% 33,139

Remaining individuals 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
ETFA
Coding
c.963+1del
MANE Select
NM_000126
dbSNP
rs746488455
Type
Deletion
Location
chr15:76225848 (GRCh38)
Gene constraint
LOEUF 1.166 · pLI <0.01 (gnomAD)
Structure
AlphaFold pLDDT 94.00 · 4 PDB
Full ETFA gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Glutaric acidemia type 2A

Also linked: multiple acyl-CoA dehydrogenase deficiencyglutaric acidemia IIa

Similar variants

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/etfa-c-963-plus-1del (accessed [today's date]).

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