Is EHMT1 p.Arg736Cys (c.2206C>T) pathogenic?

EHMT1 p.Arg736Cys (c.2206C>T) is classified Uncertain significance in EHMT1 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-06-17). AlphaMissense: likely pathogenic (0.9943); Absent from gnomAD v4.1; Associated with Kleefstra syndrome 1.

What condition is associated with EHMT1 p.Arg736Cys (c.2206C>T)?

EHMT1 p.Arg736Cys (c.2206C>T) is associated with Kleefstra syndrome 1 (ClinVar).

How common is EHMT1 p.Arg736Cys (c.2206C>T) in the general population?

EHMT1 p.Arg736Cys (c.2206C>T) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about EHMT1 p.Arg736Cys (c.2206C>T)?

AlphaMissense predicts likely pathogenic (score 0.9943) — an in-silico prediction, not a clinical call.

EHMT1 p.Arg736Cys

c.2206C>T · rs2542422116 · VCV2052673

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9943 · ACMG-weighted

gnomAD v4.1

Not reported

no allele count reported in gnomAD v4.1 (AN 1,613,936)

Missense predictors

1/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

Kleefstra syndrome 1

Computational evidence

Protein change
AlphaMissense	0.9943	likely pathogenic · top 8% in EHMT1
REVEL	0.319	indeterminate
SaProt	LLR -9.30	tolerated
⇒ AlphaMissense calls this damaging; SaProt does not; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.4	GERP 1.9, phastCons 1
Regional constraint	o/e 0.57	unconstrained · MANE · 35 kb · p 1.6e-15 · regional, not allelic
Overall
CADD	33.0	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

No allele count reported in gnomAD v4.1 (AN 1,613,936). This is missing data, not an absence: the variant may or may not be present in gnomAD. Rarity (ACMG PM2) and BA1/BS1 cannot be assessed for it.

Variant & gene context

Gene: EHMT1
Protein: p.Arg736Cys
Coding: c.2206C>T
MANE Select: NM_024757
dbSNP: rs2542422116
Type: single nucleotide variant
Location: chr9:137779648 (GRCh38)
Gene constraint: LOEUF 0.159 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 64.89 · 22 PDB

Full EHMT1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Kleefstra syndrome 1 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

EHMT1 p.Arg736= Likely benign ★ same residue
EHMT1 p.Arg736His Uncertain significance ★ ⚠ same residue
EHMT1 c.1370-1G>C Likely pathogenic ★★ same condition
EHMT1 c.1647+2T>C Pathogenic/Likely pathogenic ★★ same condition
EHMT1 c.2193-1G>C Pathogenic ★★ same condition
EHMT1 c.2276-2A>G Pathogenic ★★ same condition
EHMT1 c.2712+1G>A Pathogenic ★★ same condition
EHMT1 c.2867+2T>C Pathogenic/Likely 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/ehmt1-p-arg736cys (accessed [today's date]).

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