3-68752940-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_182522.5(TAFA4):c.209G>A(p.Arg70Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000173 in 1,613,944 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R70W) has been classified as Uncertain significance.

Frequency

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

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

TAFA4
NM_182522.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.85

Variant links:

Genes affected

TAFA4 (HGNC:21591): (TAFA chemokine like family member 4) This gene is a member of the TAFA family which is composed of five highly homologous genes that encode small secreted proteins. These proteins contain conserved cysteine residues at fixed positions, and are distantly related to MIP-1alpha, a member of the CC-chemokine family. The TAFA proteins are predominantly expressed in specific regions of the brain, and are postulated to function as brain-specific chemokines or neurokines, that act as regulators of immune and nervous cells. Alternatively spliced transcript variants have been observed for this gene. [provided by RefSeq, Nov 2011]

TAFA4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TAFA4	NM_182522.5 link	c.209G>A	p.Arg70Gln	missense_variant	Exon 4 of 6	ENST00000295569.12	NP_872328.1	Q96LR4A0A024R369
TAFA4	NM_001005527.3 link	c.209G>A	p.Arg70Gln	missense_variant	Exon 4 of 6		NP_001005527.1	Q96LR4A0A024R369
TAFA4	XM_011533371.2 link	c.209G>A	p.Arg70Gln	missense_variant	Exon 4 of 6		XP_011531673.1
TAFA4	XM_011533372.2 link	c.209G>A	p.Arg70Gln	missense_variant	Exon 4 of 6		XP_011531674.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TAFA4	ENST00000295569.12 link	c.209G>A	p.Arg70Gln	missense_variant	Exon 4 of 6	1	NM_182522.5	ENSP00000295569.7	Q96LR4
TAFA4	ENST00000495737.1 link	c.209G>A	p.Arg70Gln	missense_variant	Exon 4 of 4	4		ENSP00000419439.1	C9JUW7
TAFA4	ENST00000634242.1 link	c.*36G>A		downstream_gene_variant		5		ENSP00000489092.1	A0A0U1RQN7

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152076

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000358

AC:

AN:

251192

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135752

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.00000881

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000157

AC:

AN:

1461868

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

727236

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000144

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152076

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74286

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 12, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.209G>A (p.R70Q) alteration is located in exon 4 (coding exon 3) of the FAM19A4 gene. This alteration results from a G to A substitution at nucleotide position 209, causing the arginine (R) at amino acid position 70 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

Pathogenic

0.72

BayesDel_addAF

Pathogenic

0.22

BayesDel_noAF

Pathogenic

0.31

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.29

T;.

Eigen

Pathogenic

0.83

Eigen_PC

Pathogenic

0.81

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.99

D;D

M_CAP

Benign

0.031

MetaRNN

Uncertain

0.70

D;D

MetaSVM

Uncertain

-0.17

MutationAssessor

Uncertain

2.4

M;.

PrimateAI

Uncertain

0.75

PROVEAN

Uncertain

-4.0

D;D

REVEL

Uncertain

0.47

Sift

Benign

0.10

T;D

Sift4G

Benign

0.11

T;.

Polyphen

1.0

D;.

Vest4

0.89

MVP

0.076

MPC

0.82

ClinPred

0.96

GERP RS

5.5

Varity_R

0.49

gMVP

0.61

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

LitVar

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

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over