Is CDK5RAP2 c.*331A>T pathogenic?

CDK5RAP2 c.331A>T is classified Uncertain significance in CDK5RAP2 (ClinVar, Single submitter, 1 submitter; last evaluated 2018-01-15). Absent from gnomAD v4.1; Associated with microcephaly 3, primary, autosomal recessive.

What condition is associated with CDK5RAP2 c.*331A>T?

CDK5RAP2 c.*331A>T is associated with microcephaly 3, primary, autosomal recessive (ClinVar).

How common is CDK5RAP2 c.*331A>T in the general population?

CDK5RAP2 c.*331A>T is absent from gnomAD v4.1 (gnomAD).

CDK5RAP2 c.*331A>T

rs2031647370 · VCV912940

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

microcephaly 3, primary, autosomal recessive

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.055	GERP -2.8
Overall
CADD	7.342	PHRED · no single calibrated threshold — expert panels disagree

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: CDK5RAP2
Coding: c.*331A>T
MANE Select: NM_018249
dbSNP: rs2031647370
Type: single nucleotide variant
Location: chr9:120388905 (GRCh38)
Gene constraint: LOEUF 0.692 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 60.11 · 5 PDB

Full CDK5RAP2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

microcephaly 3, primary, autosomal recessive — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

CDK5RAP2 c.4005-1G>A Pathogenic ★★ same condition
CDK5RAP2 c.4963+1G>A Likely pathogenic ★★ same condition
CDK5RAP2 p.Arg1403Ter Pathogenic/Likely pathogenic ★★ same condition
CDK5RAP2 p.Arg1481Ter Pathogenic/Likely pathogenic ★★ same condition
CDK5RAP2 p.Arg1558Ter Pathogenic ★★ same condition
CDK5RAP2 p.Arg427Ter Pathogenic ★★ same condition
CDK5RAP2 p.Gln1743Ter Pathogenic ★★ same condition
CDK5RAP2 p.Glu1516Ter 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/cdk5rap2-c-star-331a-t (accessed [today's date]).

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