Is ABCC8 p.Ile1368= (c.4104C>T) pathogenic?

ABCC8 p.Ile1368= (c.4104C>T) is classified Conflicting classifications of pathogenicity in ABCC8 (ClinVar, Conflicting submitters, 4 submitters; last evaluated 2026-01-09). Very rare (popmax 0.0011%, nfe); Associated with diabetes mellitus, transient neonatal, 2.

What condition is associated with ABCC8 p.Ile1368= (c.4104C>T)?

ABCC8 p.Ile1368= (c.4104C>T) is associated with diabetes mellitus, transient neonatal, 2, type 2 diabetes mellitus, hypoglycemia, leucine-induced (ClinVar).

How common is ABCC8 p.Ile1368= (c.4104C>T) in the general population?

ABCC8 p.Ile1368= (c.4104C>T) is very rare (popmax 0.0011%, nfe) (gnomAD).

ABCC8 p.Ile1368=

c.4104C>T · rs1345535328 · VCV989958

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 4 submitters

gnomAD v4.1

Rare

very rare (popmax 0.0011%, nfe)

Conditions

diabetes mellitus, transient neonatal, 2

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
REVEL	0.062	moderately benign-leaning
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 10	GERP 2.7, phastCons 1
Overall
CADD	7.972	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0011% European (non-Finnish) · 13/1,180,026 alleles

Filtering AF 0.000615% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000474%

Overall 0.000867% 14/1,614,054 alleles · very rare

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.0011%	90,771
South Asian	0.0011%	91,092

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: ABCC8
Protein: p.Ile1368=
Coding: c.4104C>T
MANE Select: NM_000352
dbSNP: rs1345535328
Type: single nucleotide variant
Location: chr11:17396931 (GRCh38)
Gene constraint: LOEUF 0.829 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 82.56 · 8 PDB
Residue 1368: the abc transporter 2 domain

Full ABCC8 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

diabetes mellitus, transient neonatal, 2 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: type 2 diabetes mellitus hypoglycemia, leucine-induced hyperinsulinemic hypoglycemia, familial, 1 maturity-onset diabetes of the young transient neonatal diabetes mellitus diabetes mellitus, permanent neonatal 3

Similar variants

ABCC8 c.1176+2T>C Pathogenic/Likely pathogenic ★★ same condition
ABCC8 c.1333-1013A>G Pathogenic/Likely pathogenic ★★ same condition
ABCC8 c.148+1G>A Pathogenic/Likely pathogenic ★★ same condition
ABCC8 c.148+2T>G Likely pathogenic ★★ same condition
ABCC8 c.1630+1G>A Pathogenic/Likely pathogenic ★★ same condition
ABCC8 c.1630+1G>T Pathogenic ★★ same condition
ABCC8 c.1817+1G>C Pathogenic ★★ same condition
ABCC8 c.1817+2T>C 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/abcc8-p-ile1368 (accessed [today's date]).

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