ITPA

Chr 20AR

inosine triphosphatase

Also known as: C20orf37, DEE35, HLC14-06-P, ITPase, My049, NTPase, dJ794I6.3

This gene encodes an inosine triphosphate pyrophosphohydrolase. The encoded protein hydrolyzes inosine triphosphate and deoxyinosine triphosphate to the monophosphate nucleotide and diphosphate. This protein, which is a member of the HAM1 NTPase protein family, is found in the cytoplasm and acts as a homodimer. Defects in the encoded protein can result in inosine triphosphate pyrophosphorylase deficiency which causes an accumulation of ITP in red blood cells. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Jun 2012]

OMIMResearchGenerating clinical summary…

Primary Disease Associations & Inheritance

[Inosine triphosphatase deficiency]MIM #613850
Developmental and epileptic encephalopathy 35MIM #616647
AR

Clinical highlights

Gene-disease validity (ClinGen)
genetic developmental and epileptic encephalopathy · ARDefinitivesufficient evidence for diagnostic panels
0
Active trials
20
Pubs (1 yr)
P/LP submissions
P/LP missense
1.35
LOEUF
DN
Mechanism· predicted

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint?
1.35LOEUF
pLI 0.000
Z-score 0.58
OE 0.84 (0.531.35)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?
0.12Z-score
OE missense 0.97 (0.831.13)
111 obs / 114.7 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.84 (0.531.35)
00.351.4
Missense OE?0.97 (0.831.13)
00.61.4
Synonymous OE?1.08
01.21.6
LoF obs/exp: 12 / 14.4Missense obs/exp: 111 / 114.7Syn Z: -0.45

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

ITPA · 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.

Search ClinicalTrials.gov →