rs201231585

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_024838.5(THNSL1):​c.4C>G​(p.Leu2Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000996 in 1,605,720 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

THNSL1
NM_024838.5 missense

Scores

3
16

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.37

Publications

3 publications found
Variant links:
Genes affected
THNSL1 (HGNC:26160): (threonine synthase like 1)
ENKUR (HGNC:28388): (enkurin, TRPC channel interacting protein) This gene encodes a protein that interacts with calmodulin and several transient receptor potential canonical cation channel proteins. The encoded protein may function as an adaptor to localize signal transduction machinery to calcium channels. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2012]

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.10889676).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
THNSL1NM_024838.5 linkc.4C>G p.Leu2Val missense_variant Exon 3 of 3 ENST00000376356.5 NP_079114.3 Q8IYQ7Q9H6P9

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
THNSL1ENST00000376356.5 linkc.4C>G p.Leu2Val missense_variant Exon 3 of 3 1 NM_024838.5 ENSP00000365534.4 Q8IYQ7
ENKURENST00000615958.4 linkc.38-27358G>C intron_variant Intron 2 of 5 1 ENSP00000478989.1 A0A087WUX1
THNSL1ENST00000524413.5 linkc.4C>G p.Leu2Val missense_variant Exon 3 of 3 3 ENSP00000434887.1 Q8IYQ7
ENSG00000285859ENST00000648191.1 linkn.336+1319C>G intron_variant Intron 3 of 4

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152190
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000162
AC:
4
AN:
246898
AF XY:
0.0000225
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000179
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000103
AC:
15
AN:
1453412
Hom.:
0
Cov.:
30
AF XY:
0.00000693
AC XY:
5
AN XY:
721820
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33194
American (AMR)
AF:
0.00
AC:
0
AN:
43928
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25768
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39566
South Asian (SAS)
AF:
0.0000706
AC:
6
AN:
84980
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53166
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5726
European-Non Finnish (NFE)
AF:
0.00000813
AC:
9
AN:
1107068
Other (OTH)
AF:
0.00
AC:
0
AN:
60016
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.515
Heterozygous variant carriers
0
1
2
2
3
4
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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:
0.00000657
AC:
1
AN:
152308
Hom.:
0
Cov.:
33
AF XY:
0.0000134
AC XY:
1
AN XY:
74478
show subpopulations
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.00
AC:
0
AN:
41574
American (AMR)
AF:
0.00
AC:
0
AN:
15300
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5180
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4832
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10618
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000147
AC:
1
AN:
68018
Other (OTH)
AF:
0.00
AC:
0
AN:
2112
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.375
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.000111
Hom.:
0
ExAC
AF:
0.0000247
AC:
3
EpiCase
AF:
0.000109
EpiControl
AF:
0.00

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Mar 18, 2025
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The c.4C>G (p.L2V) alteration is located in exon 3 (coding exon 1) of the THNSL1 gene. This alteration results from a C to G substitution at nucleotide position 4, causing the leucine (L) at amino acid position 2 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.083
BayesDel_addAF
Benign
-0.30
T
BayesDel_noAF
Benign
-0.49
CADD
Benign
18
DANN
Benign
0.97
DEOGEN2
Benign
0.0016
T;T
Eigen
Benign
-0.43
Eigen_PC
Benign
-0.31
FATHMM_MKL
Benign
0.61
D
LIST_S2
Benign
0.51
.;T
M_CAP
Benign
0.0078
T
MetaRNN
Benign
0.11
T;T
MetaSVM
Benign
-1.1
T
MutationAssessor
Uncertain
2.2
M;M
PhyloP100
2.4
PrimateAI
Benign
0.42
T
PROVEAN
Benign
-0.29
N;N
REVEL
Benign
0.093
Sift
Uncertain
0.0040
D;D
Sift4G
Uncertain
0.011
D;D
Polyphen
0.52
P;P
Vest4
0.15
MutPred
0.26
Gain of MoRF binding (P = 0.1155);Gain of MoRF binding (P = 0.1155);
MVP
0.26
MPC
0.072
ClinPred
0.34
T
GERP RS
4.1
Varity_R
0.085
gMVP
0.57
Mutation Taster
=86/14
polymorphism

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

Other links and lift over

dbSNP: rs201231585; hg19: chr10-25312156; API