Is CLPB p.Lys412= (c.1236G>A) pathogenic?

CLPB p.Lys412= (c.1236G>A) is classified Likely benign in CLPB (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-06-12). Ultra-rare (popmax 0.0413%, afr); Associated with 3-methylglutaconic aciduria, type VIIB.

What condition is associated with CLPB p.Lys412= (c.1236G>A)?

CLPB p.Lys412= (c.1236G>A) is associated with 3-methylglutaconic aciduria, type VIIB (ClinVar).

How common is CLPB p.Lys412= (c.1236G>A) in the general population?

CLPB p.Lys412= (c.1236G>A) is ultra-rare (popmax 0.0413%, afr) (gnomAD).

CLPB p.Lys412=

Q: How is 3-methylglutaconic aciduria-neonatal cataract-neurologic involvement-congenital neutropenia syndrome inherited?

Typically Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

c.1236G>A · rs538912422 · VCV509454

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0413%, afr)

Conditions

3-methylglutaconic aciduria, type VIIB

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
REVEL	0.067	moderately benign-leaning
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.87	GERP -0.49, phastCons 1
Overall
CADD	8.235	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0413% African / African-American · 31/75,062 alleles

Filtering AF 0.0298% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.026%

Overall 0.00198% 32/1,614,244 alleles · ultra-rare exomes 13/1,461,888 · genomes 19/152,356 · joint denominator

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.0413%	2,421
European (non-Finnish)	8.47e-05%	1,180,043

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: CLPB
Protein: p.Lys412=
Coding: c.1236G>A
MANE Select: NM_001258392
dbSNP: rs538912422
Type: single nucleotide variant
Location: chr11:72301896 (GRCh38)
Gene constraint: LOEUF 0.643 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 72.52 · 7 PDB
Residue 412: an α-helix

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

Disease context

3-methylglutaconic aciduria, type VIIB — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For 3-methylglutaconic aciduria-neonatal cataract-neurologic involvement-congenital neutropenia syndrome (Orphanet):

Inheritance: Autosomal recessive
Onset: Antenatal, Neonatal

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CLPB c.874-2A>G Likely pathogenic ★★ same condition
CLPB p.Arg178Ter Pathogenic ★★ same condition
CLPB p.Arg312Ter Pathogenic/Likely pathogenic ★★ same condition
CLPB p.Arg378Gly Pathogenic/Likely pathogenic ★★ same condition
CLPB p.Arg387Ter 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/clpb-p-lys412 (accessed [today's date]).

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