Is ABCB7 p.Phe426= (c.1278T>C) pathogenic?

ABCB7 p.Phe426= (c.1278T>C) is classified Benign in ABCB7 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-06-17). Very rare (popmax 0.00217%, amr).

How common is ABCB7 p.Phe426= (c.1278T>C) in the general population?

ABCB7 p.Phe426= (c.1278T>C) is very rare (popmax 0.00217%, amr) (gnomAD).

ABCB7 p.Phe426=

c.1278T>C · rs1410518430 · VCV2875141

Benign Single submitter

Classification

Benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00217%, amr)

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 5.2	GERP -2, phastCons 1
Overall
CADD	11.55	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00217% Admixed American · 1/45,996 alleles

Overall 0.000182% 2/1,097,152 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00217%	45,996
European (non-Finnish)	0.000112%	894,582

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: ABCB7
Protein: p.Phe426=
Coding: c.1278T>C
MANE Select: NM_001271696
dbSNP: rs1410518430
Type: single nucleotide variant
Location: chrX:75070452 (GRCh38)
Structure: AlphaFold pLDDT 78.19 · 4 PDB
Residue 426: the abc transmembrane type-1 domain; an α-helix

Full ABCB7 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

ABCB7 c.1659+5T>G Uncertain significance ★★ same type
ABCB7 c.1935+5G>C Uncertain significance ★★ same type
ABCB7 p.Ala5Glu Uncertain significance ★★ ⚠ same type
ABCB7 p.Arg711His Uncertain significance ★★ ⚠ same type
ABCB7 p.Asn378Asp Uncertain significance ★★ ⚠ same type
ABCB7 p.Asp653Asn Uncertain significance ★★ ⚠ same type
ABCB7 p.Glu494Gln Uncertain significance ★★ ⚠ same type
ABCB7 p.Gly197Cys 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/abcb7-p-phe426 (accessed [today's date]).

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