rs150984011

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6

The NM_182916.3(TRNT1):c.1292T>C(p.Ile431Thr) variant causes a missense change. The variant allele was found at a frequency of 0.000565 in 1,613,296 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I431V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00060 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00056 ( 0 hom. )

Consequence

TRNT1
NM_182916.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:2O:1

Conservation

PhyloP100: 6.82

Publications

3 publications found

Variant links:

Genes affected

TRNT1 (HGNC:17341): (tRNA nucleotidyl transferase 1) The protein encoded by this gene is a CCA-adding enzyme which belongs to the tRNA nucleotidyltransferase/poly(A) polymerase family. This essential enzyme functions by catalyzing the addition of the conserved nucleotide triplet CCA to the 3' terminus of tRNA molecules. Mutations in this gene result in sideroblastic anemia with B-cell immunodeficiency, periodic fevers, and developmental delay. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2014]

TRNT1 links:

CRBN (HGNC:30185): (cereblon) This gene encodes a protein related to the Lon protease protein family. In rodents and other mammals this gene product is found in the cytoplasm localized with a calcium channel membrane protein, and is thought to play a role in brain development. Mutations in this gene are associated with autosomal recessive nonsyndromic cognitive disability. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2010]

CRBN Gene-Disease associations (from GenCC):

intellectual disability
Inheritance: AR Classification: MODERATE Submitted by: ClinGen
autosomal recessive non-syndromic intellectual disability
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
intellectual disability, autosomal recessive 2
Inheritance: AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), G2P

CRBN links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.011566609).

BP6

Variant 3-3148141-T-C is Benign according to our data. Variant chr3-3148141-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 542066.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRNT1	NM_182916.3 link	c.1292T>C	p.Ile431Thr	missense_variant	Exon 8 of 8	ENST00000251607.11	NP_886552.3	Q96Q11-1A0A024R2H7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TRNT1	ENST00000251607.11 link	c.1292T>C	p.Ile431Thr	missense_variant	Exon 8 of 8	1	NM_182916.3	ENSP00000251607.6		Q96Q11-1

Frequencies

GnomAD3 genomes

AF:

0.000598

AC:

AN:

152178

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00432

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000970

Gnomad OTH

AF:

0.00143

GnomAD2 exomes

AF:

0.000628

AC:

157

AN:

249816

AF XY:

0.000716

show subpopulations

Gnomad AFR exome

AF:

0.0000642

Gnomad AMR exome

AF:

0.000348

Gnomad ASJ exome

AF:

0.00548

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000751

Gnomad OTH exome

AF:

0.000661

GnomAD4 exome

AF:

0.000562

AC:

821

AN:

1461000

Hom.:

Cov.:

AF XY:

0.000549

AC XY:

399

AN XY:

726838

show subpopulations

African (AFR)

AF:

0.0000599

AC:

AN:

33366

American (AMR)

AF:

0.000314

AC:

AN:

44620

Ashkenazi Jewish (ASJ)

AF:

0.00410

AC:

107

AN:

26110

East Asian (EAS)

AF:

0.00

AC:

AN:

39674

South Asian (SAS)

AF:

0.00

AC:

AN:

86174

European-Finnish (FIN)

AF:

0.0000375

AC:

AN:

53388

Middle Eastern (MID)

AF:

0.000175

AC:

AN:

5704

European-Non Finnish (NFE)

AF:

0.000591

AC:

657

AN:

1111632

Other (OTH)

AF:

0.000630

AC:

AN:

60332

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

Heterozygous variant carriers

127

169

211

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000598

AC:

AN:

152296

Hom.:

Cov.:

AF XY:

0.000551

AC XY:

AN XY:

74470

show subpopulations

African (AFR)

AF:

0.0000722

AC:

AN:

41570

American (AMR)

AF:

0.000196

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00432

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000970

AC:

AN:

68008

Other (OTH)

AF:

0.00142

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.512

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000879

Hom.:

Bravo

AF:

0.000582

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.00128

AC:

ExAC

AF:

0.000577

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000818

EpiControl

AF:

0.00172

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:2Other:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:1Other:1

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Dec 06, 2023

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The TRNT1 c.1292T>C; p.Ile431Thr variant (rs150984011), to our knowledge, is not reported in the medical literature but is reported in ClinVar (Variation ID: 542066). This variant is observed in the general population with an overall allele frequency of 0.06% (176/281194 alleles) in the Genome Aggregation Database (v2.1.1). Computational analyses are uncertain whether this variant is neutral or deleterious (REVEL: 0.152). Due to limited information, the clinical significance of this variant is uncertain at this time. -

GenomeConnect, ClinGen

Significance:not provided

Review Status:no classification provided

Collection Method:phenotyping only

Variant interpreted as Uncertain significance and reported on 04-28-2020 by Lab or GTR ID 26957. GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant. -

Jul 09, 2025

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Congenital sideroblastic anemia-B-cell immunodeficiency-periodic fever-developmental delay syndrome

Benign:1

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.28

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.28

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.33

T;.

Eigen

Uncertain

0.21

Eigen_PC

Uncertain

0.34

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.85

.;D

M_CAP

Benign

0.015

MetaRNN

Benign

0.012

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.8

M;.

PhyloP100

6.8

PrimateAI

Uncertain

0.49

PROVEAN

Uncertain

-3.0

D;D

REVEL

Benign

0.15

Sift

Uncertain

0.0050

D;D

Sift4G

Uncertain

0.012

D;D

Polyphen

0.63

P;P

Vest4

0.32

MVP

0.44

MPC

0.0048

ClinPred

0.11

GERP RS

5.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.39

gMVP

0.36

Mutation Taster

=43/57

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over