RNGTT

Chr 6

RNA guanylyltransferase and 5'-phosphatase

Also known as: CAP1A, HCE, HCE1, hCAP

Enables inorganic triphosphate phosphatase activity and mRNA guanylyltransferase activity. Involved in 7-methylguanosine mRNA capping. Predicted to be located in nucleoplasm. [provided by Alliance of Genome Resources, Jul 2025]

OMIMResearchGenerating clinical summary…

Clinical highlights

Interpreting a novel variant
This gene is strongly intolerant of loss-of-function variation in the population, so LoF variants warrant close attention. No curated mechanism annotation is available — see the mechanism card for the computational prediction and its caveats.Based on population constraint only.
0
Active trials
5
Pubs (1 yr)
P/LP submissions
P/LP missense
0.41
LOEUF
Mechanism

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Moderate LoF intolerance
LoF Constraint?
0.41LOEUF
pLI 0.374
Z-score 4.27
OE 0.23 (0.130.41)
Moderately constrained

More LoF-intolerant than ~75% of genes

Missense Constraint?
3.00Z-score
OE missense 0.53 (0.470.60)
174 obs / 326.4 exp
Mild constraint

Moderately missense-constrained (top ~2.5%)

Observed / Expected Ratios?
LoF OE?0.23 (0.130.41)
00.351.4
Missense OE?0.53 (0.470.60)
00.61.4
Synonymous OE?0.93
01.21.6
LoF obs/exp: 8 / 35.4Missense obs/exp: 174 / 326.4Syn Z: 0.55

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

RNGTT · 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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