Is DSE p.Tyr646= (c.1938T>C) pathogenic?

DSE p.Tyr646= (c.1938T>C) is classified Likely benign in DSE (ClinVar, Single submitter, 1 submitter; last evaluated 2022-05-07). Absent from gnomAD v4.1; Associated with Ehlers-Danlos syndrome, musculocontractural type 2.

What condition is associated with DSE p.Tyr646= (c.1938T>C)?

DSE p.Tyr646= (c.1938T>C) is associated with Ehlers-Danlos syndrome, musculocontractural type 2 (ClinVar).

How common is DSE p.Tyr646= (c.1938T>C) in the general population?

DSE p.Tyr646= (c.1938T>C) is absent from gnomAD v4.1 (gnomAD).

How is Musculocontractural Ehlers-Danlos syndrome inherited?

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

DSE p.Tyr646=

c.1938T>C · rs2482303796 · VCV2135153

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

Ehlers-Danlos syndrome, musculocontractural type 2

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 -0.64	GERP -0.52, phastCons 0.039
Overall
CADD	3.486	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: DSE
Protein: p.Tyr646=
Coding: c.1938T>C
MANE Select: NM_013352
dbSNP: rs2482303796
Type: single nucleotide variant
Location: chr6:116436406 (GRCh38)
Gene constraint: LOEUF 0.563 · pLI 0.06 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 86.59 · 1 PDB
Residue 646: a β-strand

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

Disease context

Ehlers-Danlos syndrome, musculocontractural type 2 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Musculocontractural Ehlers-Danlos syndrome (Orphanet):

Inheritance: Autosomal recessive
Onset: Infancy, Neonatal

Similar variants

DSE c.416+1G>A Likely pathogenic ★★ same condition
DSE p.Ala122Thr Uncertain significance ★★ ⚠ same condition
DSE p.Ala135Val Uncertain significance ★★ ⚠ same condition
DSE p.Ala408Thr Uncertain significance ★★ ⚠ same condition
DSE p.Ala54Val Uncertain significance ★★ ⚠ same condition
DSE p.Ala584Val Uncertain significance ★★ ⚠ same condition
DSE p.Ala688Val Uncertain significance ★★ ⚠ same condition
DSE p.Ala710Val Uncertain significance ★★ ⚠ 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/dse-p-tyr646 (accessed [today's date]).

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