Is CIC p.Ser1870Ile (c.5609G>T) pathogenic?

CIC p.Ser1870Ile (c.5609G>T) is classified Uncertain significance in CIC (ClinVar, Single submitter, 1 submitter; last evaluated 2024-06-01). AlphaMissense: ambiguous (0.5204); Absent from gnomAD v4.1.

How common is CIC p.Ser1870Ile (c.5609G>T) in the general population?

CIC p.Ser1870Ile (c.5609G>T) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about CIC p.Ser1870Ile (c.5609G>T)?

AlphaMissense predicts ambiguous (score 0.5204) — an in-silico prediction, not a clinical call.

CIC p.Ser1870Ile

c.5609G>T · rs1379214643 · VCV3251015

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.5204 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Computational evidence

Protein change
AlphaMissense	0.5204	ambiguous
REVEL	0.221	benign-leaning
SaProt	—	withheld · numbering disagrees past residue 4 · why
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 12	GERP 1.2, phastCons 1
Overall
CADD	26.5	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL is an independent agreement signal.

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM S961I vs ClinVar S1870I) — verify the residue.

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: CIC
Protein: p.Ser1870Ile
Coding: c.5609G>T
MANE Select: NM_001386298
dbSNP: rs1379214643
Type: single nucleotide variant
Location: chr19:42291741 (GRCh38)
Structure: AlphaFold pLDDT 75.09

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

Similar variants

CIC p.Ser1870Gly Uncertain significance ★ ⚠ same residue
CIC p.Ser1870fs Likely pathogenic ★ same residue
CIC c.3179+1G>A Likely pathogenic ★★ same type
CIC c.3179+1G>T Pathogenic ★★ same type
CIC c.5903-2A>G Likely pathogenic ★★ same type
CIC p.Asn1136Ser Likely pathogenic ★★ same type
CIC p.Gln1134Ter Pathogenic ★★ same type
CIC p.Gln1799Ter Likely 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/cic-p-ser1870ile (accessed [today's date]).

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