Variant 1-112722286-T-G details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_182759.3(TAFA3):c.53T>G(p.Leu18Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,794 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

TAFA3
NM_182759.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.03

Variant links:

Genes affected

TAFA3 (HGNC:21590): (TAFA chemokine like family member 3) 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 encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Nov 2011]

TAFA3 links:

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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/exons	MANE
TAFA3	NM_182759.3 linkuse as main transcript	c.53T>G	p.Leu18Arg	missense_variant	3/6	ENST00000361886.4
TAFA3	NM_001004440.2 linkuse as main transcript	c.53T>G	p.Leu18Arg	missense_variant	3/6
TAFA3	NR_169586.1 linkuse as main transcript	n.507T>G		non_coding_transcript_exon_variant	3/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TAFA3	ENST00000361886.4 linkuse as main transcript	c.53T>G	p.Leu18Arg	missense_variant	3/6	1	NM_182759.3	P1	Q7Z5A8-1
TAFA3	ENST00000369630.7 linkuse as main transcript	c.53T>G	p.Leu18Arg	missense_variant	2/5	1			Q7Z5A8-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

250946

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135682

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461794

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727210

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 06, 2024

The c.53T>G (p.L18R) alteration is located in exon 2 (coding exon 1) of the FAM19A3 gene. This alteration results from a T to G substitution at nucleotide position 53, causing the leucine (L) at amino acid position 18 to be replaced by an arginine (R). 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

0.21

BayesDel_addAF

Pathogenic

0.22

BayesDel_noAF

Pathogenic

0.25

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.079

.;T

Eigen

Uncertain

0.54

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Uncertain

0.92

LIST_S2

Benign

0.70

T;T

M_CAP

Benign

0.0093

MetaRNN

Uncertain

0.74

D;D

MetaSVM

Benign

-0.44

MutationAssessor

Uncertain

2.3

M;M

MutationTaster

Benign

0.73

D;D

PrimateAI

Benign

0.48

PROVEAN

Uncertain

-3.2

D;D

REVEL

Benign

0.23

Sift

Pathogenic

0.0

D;D

Sift4G

Uncertain

0.021

D;T

Polyphen

1.0

D;D

Vest4

0.88

MutPred

0.53

Gain of MoRF binding (P = 0.0021);Gain of MoRF binding (P = 0.0021);

MVP

0.20

MPC

1.3

ClinPred

0.98

GERP RS

5.9

Varity_R

0.49

gMVP

0.87

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