Is DHTKD1 p.Asn398Ser (c.1193A>G) pathogenic?

DHTKD1 p.Asn398Ser (c.1193A>G) is classified Uncertain significance in DHTKD1 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2023-04-12). AlphaMissense: likely benign (0.2099); Very rare (popmax 0.00144%, nfe); Associated with 2-aminoadipic 2-oxoadipic aciduria.

What condition is associated with DHTKD1 p.Asn398Ser (c.1193A>G)?

DHTKD1 p.Asn398Ser (c.1193A>G) is associated with 2-aminoadipic 2-oxoadipic aciduria (ClinVar).

How common is DHTKD1 p.Asn398Ser (c.1193A>G) in the general population?

DHTKD1 p.Asn398Ser (c.1193A>G) is very rare (popmax 0.00144%, nfe) (gnomAD).

How is 2-aminoadipic 2-oxoadipic aciduria inherited?

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

What do computational predictors say about DHTKD1 p.Asn398Ser (c.1193A>G)?

AlphaMissense predicts likely benign (score 0.2099) — an in-silico prediction, not a clinical call.

DHTKD1 p.Asn398Ser

c.1193A>G · rs1179178456 · VCV2715572

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.2099 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00144%, nfe)

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

2-aminoadipic 2-oxoadipic aciduria

Computational evidence

Protein change
AlphaMissense	0.2099	likely benign
REVEL	0.949	strongly pathogenic-leaning
SaProt	LLR -9.60	tolerated
⇒ REVEL calls this damaging; AlphaMissense and SaProt do not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 11	GERP 1.5, phastCons 1
Regional constraint	o/e 1.05	unconstrained · MANE · 52 kb · p 0.072 · regional, not allelic
Overall
CADD	26.4	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 0.00144% European (non-Finnish) · 17/1,179,998 alleles

Filtering AF 0.000878% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000717%

Overall 0.00112% 18/1,613,928 alleles · very rare

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.00144%	69,412
African / African-American	0.00134%	74,894

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: DHTKD1
Protein: p.Asn398Ser
Coding: c.1193A>G
MANE Select: NM_018706
dbSNP: rs1179178456
Type: single nucleotide variant
Location: chr10:12094106 (GRCh38)
Gene constraint: LOEUF 0.864 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 95.19 · 8 PDB
Residue 398: a β-strand

Full DHTKD1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

2-aminoadipic 2-oxoadipic aciduria — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For 2-aminoadipic 2-oxoadipic aciduria (Orphanet):

Inheritance: Autosomal recessive
Onset: Childhood, Infancy

Similar variants

DHTKD1 p.Asn398= Likely benign ★ same residue
DHTKD1 c.1671+1G>A Likely pathogenic ★★ same condition
DHTKD1 c.1897-1G>A Pathogenic/Likely pathogenic ★★ same condition
DHTKD1 c.2320-2A>T Likely pathogenic ★★ same condition
DHTKD1 c.2572+1G>A Likely pathogenic ★★ same condition
DHTKD1 p.Arg163Ter Pathogenic ★★ same condition
DHTKD1 p.Arg410Ter Pathogenic/Likely pathogenic ★★ same condition
DHTKD1 p.Arg455Ter 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/dhtkd1-p-asn398ser (accessed [today's date]).

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