Is CILK1 p.Pro350= (c.1050C>T) pathogenic?

CILK1 p.Pro350= (c.1050C>T) is classified Likely benign in CILK1 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-11-22). Very rare (popmax 0.0011%, nfe).

How common is CILK1 p.Pro350= (c.1050C>T) in the general population?

CILK1 p.Pro350= (c.1050C>T) is very rare (popmax 0.0011%, nfe) (gnomAD).

CILK1 p.Pro350=

c.1050C>T · rs369311828 · VCV1680550

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.0011%, nfe)

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 1.4	GERP 1.9, phastCons 1
Overall
CADD	11.38	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0011% European (non-Finnish) · 13/1,180,028 alleles

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

Overall 0.000805% 13/1,614,030 alleles · very rare

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: CILK1
Protein: p.Pro350=
Coding: c.1050C>T
MANE Select: NM_014920
dbSNP: rs369311828
Type: single nucleotide variant
Location: chr6:53013764 (GRCh38)
Gene constraint: LOEUF 0.774 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 61.47

Full CILK1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CILK1 c.1344-4T>A Uncertain significance ★★ same type
CILK1 p.Ala629Thr Uncertain significance ★★ ⚠ same type
CILK1 p.Arg124Gln Uncertain significance ★★ ⚠ same type
CILK1 p.Arg151Gln Uncertain significance ★★ ⚠ same type
CILK1 p.Arg262Lys Uncertain significance ★★ ⚠ same type
CILK1 p.Arg280Gln Uncertain significance ★★ ⚠ same type
CILK1 p.Arg332Gln Uncertain significance ★★ ⚠ same type
CILK1 p.Arg475Trp Uncertain significance ★★ ⚠ 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/cilk1-p-pro350 (accessed [today's date]).

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