rs7304109

Positions:

• chr12-61804694-T-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_178539.5(TAFA2):​c.107-49670A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.34 in 151,808 control chromosomes in the GnomAD database, including 9,057 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.34 (9057 hom., cov: 32)
• Consequence: TAFA2 NM_178539.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.743

Genes affected

TAFA2 (HGNC:21589): (TAFA chemokine like family member 2) 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. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.387 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TAFA2	NM_178539.5	c.107-49670A>G		intron_variant		ENST00000416284.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TAFA2	ENST00000416284.8	c.107-49670A>G		intron_variant		1	NM_178539.5	P1

Frequencies

GnomAD3 genomes AF: 0.340 AC: 51546 AN: 151692 Hom.: 9053 Cov.: 32

Gnomad AFR AF: 0.246

Gnomad AMI AF: 0.329

Gnomad AMR AF: 0.301

Gnomad ASJ AF: 0.342

Gnomad EAS AF: 0.389

Gnomad SAS AF: 0.351

Gnomad FIN AF: 0.402

Gnomad MID AF: 0.323

Gnomad NFE AF: 0.391

Gnomad OTH AF: 0.348

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.340 AC: 51559 AN: 151808 Hom.: 9057 Cov.: 32 AF XY: 0.339 AC XY: 25129 AN XY: 74180

Gnomad4 AFR AF: 0.246

Gnomad4 AMR AF: 0.301

Gnomad4 ASJ AF: 0.342

Gnomad4 EAS AF: 0.389

Gnomad4 SAS AF: 0.351

Gnomad4 FIN AF: 0.402

Gnomad4 NFE AF: 0.391

Gnomad4 OTH AF: 0.351

Alfa AF: 0.377 Hom.: 21883

Bravo AF: 0.327

Asia WGS AF: 0.359 AC: 1247 AN: 3476

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	3.7
DANN	Benign	0.78

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

Other links and lift over

dbSNP: rs7304109; hg19: chr12-62198475;