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I338=

SynonymousSilentConflictingTransmembrane · predicted
Synonymous variant · codon at position 338 · Cytoplasmic loop 1 · WFS1 (Wolframin)

Silent — Silent — no amino-acid change

Interactive 3D Structure

Interactive structure
rotate · zoom · variant + 5 Å neighbors
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AlphaFold wild-type wolframin · the variant site near residue 338 (Cytoplasmic loop 1) is highlighted.

Variant Assessment

Variant type
Synonymous
Schema
Silent
Silent — no amino-acid change
Domain
Cytoplasmic loop 1
Status
—

Therapeutic Implication · Silent

No amino-acid change (I338 is unchanged): the codon is altered but the protein sequence is identical to wild-type. No structural, stability or AlphaMissense effect applies. Synonymous variants are typically benign unless they affect splicing or regulatory elements; this one is not adjacent to an exon boundary.

Clinical Evidence

ClinVar classificationConflicting classifications of pathogenicity
Review statuscriteria provided, conflicting classifications
Associated conditionsAutosomal dominant nonsyndromic hearing loss 6; Wolfram-like syndrome; Cataract 41; Type 2 diabetes mellitus; Wolfram syndrome 1
Population frequency (gnomAD v4)Ultra-rare · AF 0.00014%
cDNA changec.1014C>A
Protein consequenceI338=
ClinVar variantNM_006005.3(WFS1):c.1014C>A (p.Ile338=)
ClinVar accessionVCV002907631
Last evaluated2024/02/17 00:00

Observed at very low frequency in gnomAD.

Therapeutic Strategy Handoff · prediction

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Full Variant Card

I338= — WFS1 Molecular Atlas Card

Variant type: Synonymous (silent) Codon: position 338 (Isoleucine, I) — amino acid unchanged Domain context: Cytoplasmic loop 1

Schema category: Silent — Silent — no amino-acid change

No amino-acid change (I338 is unchanged): the codon is altered but the protein sequence is identical to wild-type. No structural, stability or AlphaMissense effect applies. Synonymous variants are typically benign unless they affect splicing or regulatory elements; this one is not adjacent to an exon boundary.

Clinical evidence

  • Classification: Conflicting classifications of pathogenicity
  • Review status: criteria provided, conflicting classifications
  • Associated conditions: Autosomal dominant nonsyndromic hearing loss 6; Wolfram-like syndrome; Cataract 41; Type 2 diabetes mellitus; Wolfram syndrome 1
  • cDNA change: c.1014C>A
  • ClinVar accession: VCV002907631
  • Last evaluated: 2024/02/17 00:00
  • Submissions: 1

Card generated by wolfram-atlas-batch (synonymous pipeline) on 2026-06-08T02:52:26.934067Z. WFS1: UniProt O76024, AlphaFold v6. Synonymous variants carry no protein-structural effect.