Is DHTKD1 p.Lys148Thr (c.443A>C) pathogenic?

DHTKD1 p.Lys148Thr (c.443A>C) is classified Likely benign in DHTKD1 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2025-12-01). AlphaMissense: likely benign (0.1129); Rare (popmax 0.533%, afr); Associated with 2-aminoadipic 2-oxoadipic aciduria.

What condition is associated with DHTKD1 p.Lys148Thr (c.443A>C)?

DHTKD1 p.Lys148Thr (c.443A>C) is associated with 2-aminoadipic 2-oxoadipic aciduria (ClinVar).

How common is DHTKD1 p.Lys148Thr (c.443A>C) in the general population?

DHTKD1 p.Lys148Thr (c.443A>C) is rare (popmax 0.533%, afr) (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.Lys148Thr (c.443A>C)?

AlphaMissense predicts likely benign (score 0.1129) — an in-silico prediction, not a clinical call.

DHTKD1 p.Lys148Thr

c.443A>C · rs141676270 · VCV729952

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

AlphaMissense

likely benign

0.1129 · ACMG-weighted

gnomAD v4.1

Rare

rare (popmax 0.533%, afr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

2-aminoadipic 2-oxoadipic aciduria

Computational evidence

Protein change
AlphaMissense	0.1129	likely benign
REVEL	0.109	moderately benign-leaning
SaProt	LLR -7.78	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.3	GERP -4
Regional constraint	o/e 1.05	unconstrained · MANE · 52 kb · p 0.072 · regional, not allelic
Overall
CADD	3.908	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 0.533% African / African-American · 400/75,032 alleles

Filtering AF 0.49% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.473%

Overall 0.0272% 439/1,614,142 alleles · rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.533%	188
Middle Eastern	0.033%	3,031
Admixed American	0.03%	3,334
Remaining individualsnot grpmax-eligible	0.0256%	3,907
South Asian	0.0022%	45,541
European (non-Finnish)	8.47e-05%	1,180,020

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.Lys148Thr
Coding: c.443A>C
MANE Select: NM_018706
dbSNP: rs141676270
Type: single nucleotide variant
Location: chr10:12084672 (GRCh38)
Gene constraint: LOEUF 0.864 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 95.19 · 8 PDB
Residue 148: an α-helix

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.Lys148Arg Uncertain significance ★★ ⚠ 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-lys148thr (accessed [today's date]).

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