Is CKM p.Val198Met (c.592G>A) pathogenic?

CKM p.Val198Met (c.592G>A) is classified Uncertain significance in CKM (ClinVar, Single submitter, 1 submitter; last evaluated 2025-10-07). AlphaMissense: likely pathogenic (0.7954); Very rare (popmax 0.00446%, eas).

How common is CKM p.Val198Met (c.592G>A) in the general population?

CKM p.Val198Met (c.592G>A) is very rare (popmax 0.00446%, eas) (gnomAD).

What do computational predictors say about CKM p.Val198Met (c.592G>A)?

AlphaMissense predicts likely pathogenic (score 0.7954) — an in-silico prediction, not a clinical call.

CKM p.Val198Met

c.592G>A · VCV4654015

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.7954 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00446%, eas)

Missense predictors

2/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.7954	likely pathogenic
REVEL	0.226	benign-leaning
SaProt	LLR -13.90	damaging
⇒ AlphaMissense and SaProt call this damaging; REVEL does not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.6	GERP 2.4, phastCons 1
Regional constraint	o/e 0.95	unconstrained · MANE · 13 kb · p 0.25 · regional, not allelic
Overall
CADD	31.0	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00446% East Asian · 2/44,850 alleles

Filtering AF 0.0013% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00109%

Overall 0.00199% 32/1,611,124 alleles · very rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.00446%	22,425
African / African-American	0.00401%	24,961
South Asian	0.00332%	30,157
European (non-Finnish)	0.00195%	51,256
Remaining individualsnot grpmax-eligible	0.0016%	62,390

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: CKM
Protein: p.Val198Met
Coding: c.592G>A
MANE Select: NM_001824
Type: single nucleotide variant
Location: chr19:45311810 (GRCh38)
Gene constraint: LOEUF 1.088 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 94.92 · 2 PDB
Residue 198: the phosphagen kinase c-terminal domain

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

Similar variants

CKM p.Leu127Val Uncertain significance ★★ ⚠ same type
CKM p.Pro91Ser Uncertain significance ★★ ⚠ same type
CKM p.Arg251Pro Likely benign ★★ ⚠ same type
CKM p.Ala214Thr Uncertain significance ★ ⚠ same type
CKM p.Ala267Asp Uncertain significance ★ ⚠ same type
CKM p.Ala267Val Uncertain significance ★ ⚠ same type
CKM p.Arg135Gly Uncertain significance ★ ⚠ same type
CKM p.Arg135His 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/ckm-p-val198met (accessed [today's date]).

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