CMTR1

Chr 6

cap methyltransferase 1

Also known as: FTSJD2, KIAA0082, MTr1, hMTr1

NCBI Gene: 23070ENSG00000137200UniProt: Q8N1G2

Enables mRNA (nucleoside-2'-O-)-methyltransferase activity. Involved in 7-methylguanosine mRNA capping. Located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2025]

80
ClinVar variants
6
Pathogenic / LP
0.99
pLI score· haploinsufficient
0
Active trials
Clinical Summary— CMTR1
⚡
Population Constraint (gnomAD)
Highly constrained gene — heterozygous loss-of-function variants are very rare in the population (pLI 0.99). One damaged copy is likely sufficient to cause disease.
📋
ClinVar Variants
6 Pathogenic / Likely Pathogenic· 72 VUS of 80 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

gnomAD
Dual constrained — LoF & missense intolerant
LoF Constraint?LOEUF (Loss-of-function Observed/Expected Upper bound Fraction) is the upper bound of the 90% CI for LoF OE — the preferred gnomAD v4 metric. Lower = more intolerant to LoF. LOEUF < 0.35 = highly constrained.
0.29LOEUF
pLI 0.993
Z-score 5.50
OE 0.16 (0.09–0.29)
Highly constrained

Highly LoF-intolerant (top ~10% of genes)

Missense Constraint?Missense Z-score: standard deviations fewer missense variants observed vs. expected. Z > 3.09 (p < 0.001) = gene does not tolerate missense variation. OE missense < 0.6 is also considered constrained.
3.32Z-score
OE missense 0.58 (0.53–0.64)
287 obs / 494.8 exp
Constrained

Highly missense-constrained (top ~0.1%)

Observed / Expected Ratios?Shaded band = 90% confidence interval. Vertical tick = point estimate. Grey threshold line = gnomAD constraint cutoff for that variant class.
LoF OE?Ratio of observed to expected LoF variants. Upper CI bound (LOEUF) ≤ 0.35 = strong LoF constraint signal.0.16 (0.09–0.29)
0≤0.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.0.58 (0.53–0.64)
0≤0.61.4
Synonymous OE?Control metric — synonymous variants are largely neutral and expected near OE = 1.0. Significant deviation may indicate annotation issues.1.00
0≤1.21.6
LoF obs/exp: 8 / 49.9Missense obs/exp: 287 / 494.8Syn Z: -0.04

ClinVar Variant Classifications

80 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic6
VUS72
Likely Benign2
6
Pathogenic
72
VUS
2
Likely Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
6
0
6
Likely Pathogenic
0
0
0
0
0
VUS
0
71
1
0
72
Likely Benign
0
2
0
0
2
Benign
0
0
0
0
0
Total0737080

LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly

View in ClinVar →

Protein Context — Lollipop Plot

CMTR1 · protein map & ClinVar variants

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

OMIM — Genotype-Phenotype Relationships

1 OMIM entry

OMIM
Clinical Literature
Landmark / reviewRecent case evidence
Key Publications
Landmark & review papers · by relevance
PubMed
Top 10 resultsSearch PubMed ↗
Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC
Top 5 resultsSearch Europe PMC ↗

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →

External Resources

Links to major genomics databases and tools