DGUOK

Chr 2AR

deoxyguanosine kinase

Also known as: MTDPS3, NCPH, NCPH1, PEOB4, dGK

In mammalian cells, the phosphorylation of purine deoxyribonucleosides is mediated predominantly by two deoxyribonucleoside kinases, cytosolic deoxycytidine kinase and mitochondrial deoxyguanosine kinase. The protein encoded by this gene is responsible for phosphorylation of purine deoxyribonucleosides in the mitochondrial matrix. In addition, this protein phosphorylates several purine deoxyribonucleoside analogs used in the treatment of lymphoproliferative disorders, and this phosphorylation is critical for the effectiveness of the analogs. Alternative splice variants encoding different protein isoforms have been described for this gene. [provided by RefSeq, Jul 2008]

OMIMResearchGenerating clinical summary…
DNmechanismARLOEUF 1.193 OMIM phenotypes
Clinical SummaryDGUOK
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Gene-Disease Validity (ClinGen)
mitochondrial disease · ARDefinitive

Definitive — sufficient evidence for diagnostic panels

Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint?
1.19LOEUF
pLI 0.000
Z-score 0.99
OE 0.74 (0.471.19)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?
-0.47Z-score
OE missense 1.11 (0.971.26)
165 obs / 148.9 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios?
LoF OE?0.74 (0.471.19)
00.351.4
Missense OE?1.11 (0.971.26)
00.61.4
Synonymous OE?1.08
01.21.6
LoF obs/exp: 12 / 16.3Missense obs/exp: 165 / 148.9Syn Z: -0.50

This gene — mechanism propensity

DN
0.76top 25%
GOF
0.5367th %ile
LOF
0.2776th %ile

The highest-scoring mechanism for this gene is dominant-negative.

DNprediction above median

Note: In-silico variant effect predictors (SIFT, PolyPhen, REVEL, CADD) may underestimate pathogenicity of missense variants in genes with GOF or DN mechanisms. Consider functional evidence and clinical context.

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

DGUOK · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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