Is RELN p.Asp2646= (c.7938C>T) pathogenic?

RELN p.Asp2646= (c.7938C>T) is classified Likely benign in RELN (ClinVar, Single submitter, 2 submitters; last evaluated 2025-12-21). Ultra-rare (popmax 0.0133%, amr); Associated with Norman-Roberts syndrome.

What condition is associated with RELN p.Asp2646= (c.7938C>T)?

RELN p.Asp2646= (c.7938C>T) is associated with Norman-Roberts syndrome, familial temporal lobe epilepsy 7 (ClinVar).

How common is RELN p.Asp2646= (c.7938C>T) in the general population?

RELN p.Asp2646= (c.7938C>T) is ultra-rare (popmax 0.0133%, amr) (gnomAD).

RELN p.Asp2646=

c.7938C>T · rs748558740 · VCV766903

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0133%, amr)

Conditions

Norman-Roberts syndrome

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -6.5	GERP -3.9
Overall
CADD	0.283	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0133% Admixed American · 8/60,008 alleles

Filtering AF 0.00661% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00482%

Overall 0.00273% 44/1,614,006 alleles · ultra-rare exomes 41/1,461,830 · genomes 3/152,176 · joint denominator

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.0133%	7,501
East Asian	0.0111%	8,977
South Asian	0.011%	9,105
Remaining individualsnot grpmax-eligible	0.0048%	20,828
African / African-American	0.00267%	37,457
European (non-Finnish)	0.00136%	73,752

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: RELN
Protein: p.Asp2646=
Coding: c.7938C>T
MANE Select: NM_005045
dbSNP: rs748558740
Type: single nucleotide variant
Location: chr7:103515366 (GRCh38)
Gene constraint: LOEUF 0.276 · pLI 1.00 · ClinGen HI 0/3 (gnomAD)

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

Disease context

Norman-Roberts syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: familial temporal lobe epilepsy 7

Similar variants

RELN p.Asp2646Glu Uncertain significance ★ ⚠ same residue
RELN c.3912+2T>G Likely pathogenic ★★ same condition
RELN c.7349+2T>C Likely pathogenic ★★ same condition
RELN p.Arg1622Ter Pathogenic/Likely pathogenic ★★ same condition
RELN c.1893-3C>T Uncertain significance ★★ same condition
RELN c.227-3C>T Uncertain significance ★★ same condition
RELN c.2465+5G>T Uncertain significance ★★ same condition
RELN c.6072+3A>G 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/reln-p-asp2646 (accessed [today's date]).

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