Is DLD p.Ile371fs (c.1109_1112dup) pathogenic?

DLD p.Ile371fs (c.11091112dup) is classified Likely pathogenic in DLD (ClinVar, Single submitter, 1 submitter; last evaluated 2021-11-25). Absent from gnomAD; Associated with pyruvate dehydrogenase E3 deficiency.

What condition is associated with DLD p.Ile371fs (c.1109_1112dup)?

DLD p.Ile371fs (c.1109_1112dup) is associated with pyruvate dehydrogenase E3 deficiency (ClinVar).

How common is DLD p.Ile371fs (c.1109_1112dup) in the general population?

DLD p.Ile371fs (c.1109_1112dup) is absent from gnomAD (gnomAD).

How is Maple syrup urine disease inherited?

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

DLD p.Ile371fs

c.1109_1112dup · rs2535602325 · VCV1724952

Likely pathogenic Single submitter

Classification

Likely pathogenic

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

Consequence

frameshift

predicted LoF

gnomAD v4.1

Not reported

no gnomAD frequency available for this variant

Conditions

pyruvate dehydrogenase E3 deficiency

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequence	frameshift	predicted loss-of-function
NMD	predicted	premature termination codon in exon 11 of 14
Splicing
SpliceAI	—	not assessed · substitutions only
Constraint at this position
Conservation	phyloP 12	GERP 1.2, phastCons 1

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

dbSNP / gnomAD

No gnomAD frequency available for this variant. 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: DLD
Protein: p.Ile371fs
Coding: c.1109_1112dup
MANE Select: NM_000108
dbSNP: rs2535602325
Type: Duplication
Location: chr7:107917334 (GRCh38)
Gene constraint: LOEUF 0.727 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 93.69 · 17 PDB
Residue 371: an α-helix

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

Disease context

pyruvate dehydrogenase E3 deficiency — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Maple syrup urine disease (Orphanet):

Inheritance: Autosomal recessive
Onset: Childhood, Infancy, Neonatal
Prevalence: 1-9 / 1 000 000 (Worldwide)

Similar variants

DLD p.Ile371= Likely benign ★ same residue
DLD p.Leu274fs Pathogenic/Likely pathogenic ★★ same condition
DLD p.Ser28fs Pathogenic/Likely pathogenic ★★ same condition
DLD p.Ala363fs Likely pathogenic ★ same condition
DLD p.Ala381fs Likely pathogenic ★ same condition
DLD p.Glu330Ter Pathogenic ★ same condition
DLD p.Glu412fs Likely pathogenic ★ same condition
DLD p.Thr199fs 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/dld-p-ile371fs (accessed [today's date]).

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