3-196327556-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_138461.4(TM4SF19):​c.35G>A​(p.Arg12Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000415 in 1,613,574 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R12W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000033 ( 0 hom. )

Consequence

TM4SF19
NM_138461.4 missense

Scores

2
2
15

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.898
Variant links:
Genes affected
TM4SF19 (HGNC:25167): (transmembrane 4 L six family member 19) The protein encoded by this gene is a member of the four-transmembrane L6 superfamily. Members of this family function in various cellular processes including cell proliferation, motility, and adhesion via their interactions with integrins. In human brain tissue, this gene is expressed at high levels in the parietal lobe, occipital lobe, hippocampus, pons, white matter, corpus callosum, and cerebellum. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, May 2017]
TM4SF19-DYNLT2B (HGNC:49190): (TM4SF19-DYNLT2B readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring transmembrane 4 L six family member 19 (TM4SF19) and Tctex1 domain containing 2 (TCTEX1D2) genes on chromosome 3. The read-through transcript is a candidate for nonsense-mediated mRNA decay (NMD), and is thus not expected to produce a protein product. [provided by RefSeq, Mar 2011]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.15187505).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
TM4SF19NM_138461.4 linkc.35G>A p.Arg12Gln missense_variant Exon 2 of 5 ENST00000273695.4 NP_612470.2 Q96DZ7-1
TM4SF19NM_001204897.2 linkc.35G>A p.Arg12Gln missense_variant Exon 2 of 5 NP_001191826.1
TM4SF19NM_001204898.2 linkc.35G>A p.Arg12Gln missense_variant Exon 2 of 4 NP_001191827.1 Q96DZ7-2B7ZW46
TM4SF19-DYNLT2BNR_037950.1 linkn.193G>A non_coding_transcript_exon_variant Exon 2 of 6

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
TM4SF19ENST00000273695.4 linkc.35G>A p.Arg12Gln missense_variant Exon 2 of 5 1 NM_138461.4 ENSP00000273695.4 Q96DZ7-1
TM4SF19ENST00000446879.5 linkc.35G>A p.Arg12Gln missense_variant Exon 2 of 6 1 ENSP00000395280.1 C9JCD5
TM4SF19ENST00000454715.5 linkc.35G>A p.Arg12Gln missense_variant Exon 2 of 4 1 ENSP00000387728.1 Q96DZ7-2
TM4SF19-DYNLT2BENST00000442633.1 linkn.35G>A non_coding_transcript_exon_variant Exon 2 of 6 1 ENSP00000405973.1

Frequencies

GnomAD3 genomes
AF:
0.000125
AC:
19
AN:
152074
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00124
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000597
AC:
15
AN:
251082
Hom.:
0
AF XY:
0.0000663
AC XY:
9
AN XY:
135768
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000231
Gnomad ASJ exome
AF:
0.0000993
Gnomad EAS exome
AF:
0.0000544
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000265
Gnomad OTH exome
AF:
0.000327
GnomAD4 exome
AF:
0.0000328
AC:
48
AN:
1461500
Hom.:
0
Cov.:
31
AF XY:
0.0000358
AC XY:
26
AN XY:
727054
show subpopulations
Gnomad4 AFR exome
AF:
0.0000299
Gnomad4 AMR exome
AF:
0.000224
Gnomad4 ASJ exome
AF:
0.0000383
Gnomad4 EAS exome
AF:
0.0000252
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000225
Gnomad4 OTH exome
AF:
0.000116
GnomAD4 genome
AF:
0.000125
AC:
19
AN:
152074
Hom.:
0
Cov.:
32
AF XY:
0.000175
AC XY:
13
AN XY:
74324
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00124
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000434
Hom.:
0
Bravo
AF:
0.0000831
ExAC
AF:
0.0000165
AC:
2

ClinVar

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

Submissions by phenotype

not specified Uncertain:1
Apr 26, 2023
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The c.35G>A (p.R12Q) alteration is located in exon 2 (coding exon 1) of the TM4SF19 gene. This alteration results from a G to A substitution at nucleotide position 35, causing the arginine (R) at amino acid position 12 to be replaced by a glutamine (Q). 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
0.084
BayesDel_addAF
Benign
-0.38
T
BayesDel_noAF
Benign
-0.49
CADD
Benign
19
DANN
Pathogenic
1.0
DEOGEN2
Benign
0.0068
.;.;T
Eigen
Benign
0.16
Eigen_PC
Benign
0.19
FATHMM_MKL
Benign
0.68
D
LIST_S2
Benign
0.73
T;T;T
M_CAP
Benign
0.014
T
MetaRNN
Benign
0.15
T;T;T
MetaSVM
Benign
-1.0
T
MutationAssessor
Uncertain
2.7
.;M;M
PrimateAI
Benign
0.35
T
PROVEAN
Benign
-0.83
N;N;N
REVEL
Benign
0.064
Sift
Pathogenic
0.0
D;D;T
Sift4G
Uncertain
0.0030
D;T;T
Polyphen
0.91
P;.;D
Vest4
0.20
MutPred
0.72
Gain of helix (P = 0.0425);Gain of helix (P = 0.0425);Gain of helix (P = 0.0425);
MVP
0.20
MPC
0.55
ClinPred
0.18
T
GERP RS
3.6
Varity_R
0.074
gMVP
0.39

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.15
Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs772305981; hg19: chr3-196054427; COSMIC: COSV56557574; COSMIC: COSV56557574; API