3-68752952-C-T

Variant names:

Variant summary

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

The NM_182522.5(TAFA4):c.197G>A(p.Arg66His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000737 in 1,614,048 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts 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. R66L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00011 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000070 ( 0 hom. )

Consequence

TAFA4
NM_182522.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.68

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:

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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=0.0775432).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TAFA4	NM_182522.5 link	c.197G>A	p.Arg66His	missense_variant	Exon 4 of 6	ENST00000295569.12	NP_872328.1	Q96LR4A0A024R369
TAFA4	NM_001005527.3 link	c.197G>A	p.Arg66His	missense_variant	Exon 4 of 6		NP_001005527.1	Q96LR4A0A024R369
TAFA4	XM_011533371.2 link	c.197G>A	p.Arg66His	missense_variant	Exon 4 of 6		XP_011531673.1
TAFA4	XM_011533372.2 link	c.197G>A	p.Arg66His	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.197G>A	p.Arg66His	missense_variant	Exon 4 of 6	1	NM_182522.5	ENSP00000295569.7	Q96LR4
TAFA4	ENST00000495737.1 link	c.197G>A	p.Arg66His	missense_variant	Exon 4 of 4	4		ENSP00000419439.1	C9JUW7
TAFA4	ENST00000634242.1 link	c.*24G>A		downstream_gene_variant		5		ENSP00000489092.1	A0A0U1RQN7

Frequencies

GnomAD3 genomes

AF:

0.0000658

AC:

AN:

152074

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000772

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000956

AC:

AN:

251156

Hom.:

AF XY:

0.000118

AC XY:

AN XY:

135730

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000816

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000529

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000705

AC:

103

AN:

1461856

Hom.:

Cov.:

AF XY:

0.0000894

AC XY:

AN XY:

727230

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00118

Gnomad4 SAS exome

AF:

0.0000927

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000414

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.000105

AC:

AN:

152192

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74398

show subpopulations

Gnomad4 AFR

AF:

0.000169

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000774

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.0000604

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000123

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

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

Dec 02, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.197G>A (p.R66H) 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 197, causing the arginine (R) at amino acid position 66 to be replaced by a histidine (H). 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

0.11

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.27

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.13

T;.

Eigen

Uncertain

0.45

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Uncertain

0.80

LIST_S2

Uncertain

0.88

D;D

M_CAP

Benign

0.0051

MetaRNN

Benign

0.078

T;T

MetaSVM

Benign

-0.92

MutationAssessor

Benign

1.4

L;.

PrimateAI

Uncertain

0.58

PROVEAN

Uncertain

-3.6

D;D

REVEL

Benign

0.11

Sift

Benign

0.074

T;D

Sift4G

Benign

0.16

T;.

Polyphen

0.98

D;.

Vest4

0.37

MVP

0.040

MPC

0.27

ClinPred

0.35

GERP RS

4.6

Varity_R

0.20

gMVP

0.45

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