Is NCAPD2 p.Val141Ala (c.422T>C) pathogenic?

NCAPD2 p.Val141Ala (c.422T>C) is classified Uncertain significance in NCAPD2 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-09-26). AlphaMissense: likely benign (0.0748); Absent from gnomAD v4.1; Associated with Inborn genetic diseases.

What condition is associated with NCAPD2 p.Val141Ala (c.422T>C)?

NCAPD2 p.Val141Ala (c.422T>C) is associated with Inborn genetic diseases (ClinVar).

How common is NCAPD2 p.Val141Ala (c.422T>C) in the general population?

NCAPD2 p.Val141Ala (c.422T>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about NCAPD2 p.Val141Ala (c.422T>C)?

AlphaMissense predicts likely benign (score 0.0748) — an in-silico prediction, not a clinical call.

NCAPD2 p.Val141Ala

c.422T>C · VCV4625869

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0748 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.0748	likely benign
REVEL	0.053	moderately benign-leaning
SaProt	LLR -5.25	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.015	GERP -0.6, phastCons 0.004
Regional constraint	o/e 0.89	unconstrained · MANE · 36 kb · p 6.1e-06 · regional, not allelic
Overall
CADD	7.488	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — 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: NCAPD2
Protein: p.Val141Ala
Coding: c.422T>C
MANE Select: NM_014865
Type: single nucleotide variant
Location: chr12:6510788 (GRCh38)
Gene constraint: LOEUF 0.687 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 79.94
Residue 141: the 'interactions with smc2 and smc4' region

Full NCAPD2 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

NCAPD2 c.2735-6C>T Uncertain significance ★★ same condition
NCAPD2 p.Ala43Gly Uncertain significance ★★ ⚠ same condition
NCAPD2 p.Arg1397His Uncertain significance ★★ ⚠ same condition
NCAPD2 p.Arg677His Uncertain significance ★★ ⚠ same condition
NCAPD2 p.Asn598Ile Uncertain significance ★★ ⚠ same condition
NCAPD2 p.Glu1178Lys Uncertain significance ★★ ⚠ same condition
NCAPD2 p.Glu883Lys Uncertain significance ★★ ⚠ same condition
NCAPD2 c.2482-6C>T 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/ncapd2-p-val141ala (accessed [today's date]).

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