ABCB4 p.Leu617=
c.1849C>T · rs1337503859 · VCV2977521
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00203%, nfe)
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 8.7 | GERP 1, phastCons 1 |
| Overall | ||
| CADD | 11.33 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00203%
European (non-Finnish) · 24/1,179,998 alleles
Filtering AF
0.00138%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00116%
Overall
0.00155%
25/1,613,992 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| European (non-Finnish)grpmax | 0.00203% | 49,167 |
| African / African-American | 0.00134% | 74,902 |
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
- ABCB4
- Protein
- p.Leu617=
- Coding
- c.1849C>T
- MANE Select
- NM_000443
- dbSNP
- rs1337503859
- Type
- single nucleotide variant
- Location
- chr7:87431448 (GRCh38)
- Gene constraint
- LOEUF 0.623 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)
- Structure
- AlphaFold pLDDT 83.36 · 4 PDB
- Residue 617
- an α-helix; the abc transporter 1 domain
Similar variants
- ABCB4 c.1006-2A>C Pathogenic ★★ same type
- ABCB4 c.1356+2T>C Pathogenic/Likely pathogenic ★★ same type
- ABCB4 c.1560+1G>A Likely pathogenic ★★ same type
- ABCB4 c.2064+3A>T Likely pathogenic ★★ same type
- ABCB4 c.2211+1G>A Pathogenic/Likely pathogenic ★★ same type
- ABCB4 c.2682+1G>A Pathogenic/Likely pathogenic ★★ same type
- ABCB4 c.2783+1G>T Pathogenic/Likely pathogenic ★★ same type
- ABCB4 c.286+1G>A Pathogenic ★★ 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/abcb4-p-leu617 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown