Is ABCC2 p.Leu771Pro (c.2312T>C) pathogenic?

ABCC2 p.Leu771Pro (c.2312T>C) is classified Uncertain significance in ABCC2 (ClinVar, Single submitter, 2 submitters; last evaluated 2023-02-23). AlphaMissense: likely pathogenic (0.9971); Absent from gnomAD v4.1; Associated with Dubin-Johnson syndrome.

What condition is associated with ABCC2 p.Leu771Pro (c.2312T>C)?

ABCC2 p.Leu771Pro (c.2312T>C) is associated with Dubin-Johnson syndrome (ClinVar).

How common is ABCC2 p.Leu771Pro (c.2312T>C) in the general population?

ABCC2 p.Leu771Pro (c.2312T>C) is absent from gnomAD v4.1 (gnomAD).

How is Dubin-Johnson syndrome inherited?

Typically Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

What do computational predictors say about ABCC2 p.Leu771Pro (c.2312T>C)?

AlphaMissense predicts likely pathogenic (score 0.9971) — an in-silico prediction, not a clinical call.

ABCC2 p.Leu771Pro

c.2312T>C · rs2492964897 · VCV2444382

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 2 submitters

AlphaMissense

likely pathogenic

0.9971 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Dubin-Johnson syndrome

Computational evidence

Protein change
AlphaMissense	0.9971	likely pathogenic · top 1% in ABCC2
REVEL	0.981	strongly pathogenic-leaning
SaProt	LLR -15.86	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.9	GERP 2.6, phastCons 1
Regional constraint	o/e 0.98	unconstrained · MANE · 69 kb · p 0.48 · regional, not allelic
Overall
CADD	28.6	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: ABCC2
Protein: p.Leu771Pro
Coding: c.2312T>C
MANE Select: NM_000392
dbSNP: rs2492964897
Type: single nucleotide variant
Location: chr10:99818830 (GRCh38)
Gene constraint: LOEUF 0.985 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 81.40 · 16 PDB
Residue 771: an α-helix; the abc transporter 1 domain

Full ABCC2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

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

For Dubin-Johnson syndrome (Orphanet):

Inheritance: Autosomal recessive
Onset: Adolescent, Adult

Similar variants

ABCC2 c.1031+4A>G Pathogenic/Likely pathogenic ★★ same condition
ABCC2 c.3258+1G>A Pathogenic/Likely pathogenic ★★ same condition
ABCC2 c.333+1G>A Likely pathogenic ★★ same condition
ABCC2 c.3415-1G>A Pathogenic/Likely pathogenic ★★ same condition
ABCC2 c.3741+1G>A Pathogenic/Likely pathogenic ★★ same condition
ABCC2 c.3741+1G>T Pathogenic/Likely pathogenic ★★ same condition
ABCC2 c.576+1G>A Pathogenic/Likely pathogenic ★★ same condition
ABCC2 p.Arg1066Ter Pathogenic/Likely pathogenic ★★ 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/abcc2-p-leu771pro (accessed [today's date]).

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