Is CHD2 p.Arg1205Lys (c.3614G>A) pathogenic?

CHD2 p.Arg1205Lys (c.3614G>A) is classified Conflicting classifications of pathogenicity in CHD2 (ClinVar, Conflicting submitters, 3 submitters; last evaluated 2024-08-05). AlphaMissense: likely benign (0.1029); Very rare (popmax 0.00686%, amr); Associated with Inborn genetic diseases.

What condition is associated with CHD2 p.Arg1205Lys (c.3614G>A)?

CHD2 p.Arg1205Lys (c.3614G>A) is associated with Inborn genetic diseases, developmental and epileptic encephalopathy 94 (ClinVar).

How common is CHD2 p.Arg1205Lys (c.3614G>A) in the general population?

CHD2 p.Arg1205Lys (c.3614G>A) is very rare (popmax 0.00686%, amr) (gnomAD).

What do computational predictors say about CHD2 p.Arg1205Lys (c.3614G>A)?

AlphaMissense predicts likely benign (score 0.1029) — an in-silico prediction, not a clinical call.

CHD2 p.Arg1205Lys

c.3614G>A · rs559187972 · VCV934754

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 3 submitters

AlphaMissense

likely benign

0.1029 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00686%, amr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.1029	likely benign
REVEL	0.221	benign-leaning
SaProt	LLR -5.54	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 7.3	GERP -1, phastCons 1
Regional constraint	o/e 0.56	unconstrained · MANE · 5,656 bp · p 4.7e-09 · regional, not allelic
Overall
CADD	21.9	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 0.00686% Admixed American · 4/58,340 alleles

Filtering AF 0.0023% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00142%

Overall 0.00211% 34/1,607,842 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00686%	14,585
European (non-Finnish)	0.00238%	42,088
Remaining individualsnot grpmax-eligible	0.0016%	62,314
African / African-American	0.00134%	74,650

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: CHD2
Protein: p.Arg1205Lys
Coding: c.3614G>A
MANE Select: NM_001271
dbSNP: rs559187972
Type: single nucleotide variant
Location: chr15:92996975 (GRCh38)
Gene constraint: LOEUF 0.174 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 60.81
Residue 1205: a UniProt-annotated variant site (in dee94); a UniProt-annotated variant site (found in a patient with progressive myoclonus epilepsy; uncertain significance)

Full CHD2 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

Also linked: developmental and epileptic encephalopathy 94

Similar variants

CHD2 p.Arg1205= Likely benign ★★ same residue
CHD2 c.1153+1G>C Pathogenic ★★ same condition
CHD2 c.1809+1G>A Pathogenic/Likely pathogenic ★★ same condition
CHD2 c.294+1G>T Likely pathogenic ★★ same condition
CHD2 c.443+1G>A Pathogenic/Likely pathogenic ★★ same condition
CHD2 c.693-1G>A Likely pathogenic ★★ same condition
CHD2 p.Ala879Val Pathogenic/Likely pathogenic ★★ ⚠ same condition
CHD2 p.Arg1072Ter 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/chd2-p-arg1205lys (accessed [today's date]).

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