Is CIC p.Val1277Ala (c.3830T>C) pathogenic?

CIC p.Val1277Ala (c.3830T>C) is classified Likely benign in CIC (ClinVar, Single submitter, 1 submitter; last evaluated 2024-06-17). AlphaMissense: likely benign (0.0777); Ultra-rare (popmax 0.0267%, amr); Associated with Inborn genetic diseases.

What condition is associated with CIC p.Val1277Ala (c.3830T>C)?

CIC p.Val1277Ala (c.3830T>C) is associated with Inborn genetic diseases (ClinVar).

How common is CIC p.Val1277Ala (c.3830T>C) in the general population?

CIC p.Val1277Ala (c.3830T>C) is ultra-rare (popmax 0.0267%, amr) (gnomAD).

What do computational predictors say about CIC p.Val1277Ala (c.3830T>C)?

AlphaMissense predicts likely benign (score 0.0777) — an in-silico prediction, not a clinical call.

CIC p.Val1277Ala

c.3830T>C · VCV3267339

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0777 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0267%, amr)

Missense predictors

0/2 damaging

AlphaMissense, REVEL

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.0777	likely benign
REVEL	0.082	moderately benign-leaning
⇒ AlphaMissense and REVEL both call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4.1	GERP -0.25, phastCons 1
Overall
CADD	17.44	PHRED · no single calibrated threshold — expert panels disagree

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

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM V368A vs ClinVar V1277A) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0267% Admixed American · 16/60,000 alleles

Filtering AF 0.0166% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0136%

Overall 0.00297% 48/1,613,492 alleles · ultra-rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.0267%	3,750
Remaining individualsnot grpmax-eligible	0.0064%	15,620
European (non-Finnish)	0.00237%	42,143

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: CIC
Protein: p.Val1277Ala
Coding: c.3830T>C
MANE Select: NM_005984 · reported on NM_001386298
Type: single nucleotide variant
Location: chr19:42289059 (GRCh38)
Structure: AlphaFold pLDDT 75.09

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

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

CIC c.2795-2056C>T Uncertain significance ★★ ⚠ same condition
CIC p.Ala1228Val Uncertain significance ★★ ⚠ same condition
CIC p.Ala1445Gly Uncertain significance ★★ ⚠ same condition
CIC p.Ala1750Val Uncertain significance ★★ ⚠ same condition
CIC p.Ala1975Gly Uncertain significance ★★ ⚠ same condition
CIC p.Ala2463Thr Uncertain significance ★★ ⚠ same condition
CIC p.Arg1205Trp Uncertain significance ★★ ⚠ same condition
CIC p.Arg1481Gln Uncertain significance ★★ ⚠ 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/cic-p-val1277ala (accessed [today's date]).

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