Genetic Variant FNDC3A:p.Ala274Val (chr13-49145779-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001079673.2(FNDC3A):c.821C>T(p.Ala274Val) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.0000285 in 1,613,190 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

FNDC3A
NM_001079673.2 missense, splice_region

Scores

Splicing: ADA: 0.001614

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.74

Variant links:

Genes affected

FNDC3A (HGNC:20296): (fibronectin type III domain containing 3A) Enables RNA binding activity. Predicted to act upstream of or within several processes, including Sertoli cell development; fertilization; and spermatid development. Located in Golgi apparatus. [provided by Alliance of Genome Resources, Apr 2022]

FNDC3A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.021779895).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FNDC3A	NM_001079673.2 link	c.821C>T	p.Ala274Val	missense_variant, splice_region_variant	Exon 8 of 26	ENST00000492622.6	NP_001073141.1	Q9Y2H6-1A0A024RDT9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FNDC3A	ENST00000492622.6 link	c.821C>T	p.Ala274Val	missense_variant, splice_region_variant	Exon 8 of 26	1	NM_001079673.2	ENSP00000417257.1		Q9Y2H6-1

Frequencies

GnomAD3 genomes

AF:

0.000164

AC:

AN:

152134

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000531

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.000478

GnomAD3 exomes

AF:

0.0000279

AC:

AN:

250688

Hom.:

AF XY:

0.0000369

AC XY:

AN XY:

135496

show subpopulations

Gnomad AFR exome

AF:

0.000431

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

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:

0.0000130

AC:

AN:

1460938

Hom.:

Cov.:

AF XY:

0.00000826

AC XY:

AN XY:

726776

show subpopulations

Gnomad4 AFR exome

AF:

0.000479

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000177

AC:

AN:

152252

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74450

show subpopulations

Gnomad4 AFR

AF:

0.000578

Gnomad4 AMR

AF:

0.000131

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:

0.000473

Alfa

AF:

0.000132

Hom.:

Bravo

AF:

0.000212

ExAC

AF:

0.0000330

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 02, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.821C>T (p.A274V) alteration is located in exon 8 (coding exon 7) of the FNDC3A gene. This alteration results from a C to T substitution at nucleotide position 821, causing the alanine (A) at amino acid position 274 to be replaced by a valine (V). 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

0.17

BayesDel_addAF

Benign

-0.45

BayesDel_noAF

Benign

-0.52

CADD

Benign

DANN

Benign

0.39

DEOGEN2

Benign

0.097

T;T;T;.

Eigen

Benign

-0.40

Eigen_PC

Benign

-0.12

FATHMM_MKL

Benign

0.69

LIST_S2

Uncertain

0.93

.;D;T;T

M_CAP

Benign

0.0061

MetaRNN

Benign

0.022

T;T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

-1.5

N;.;N;.

PrimateAI

Benign

0.45

PROVEAN

Benign

3.0

N;.;N;N

REVEL

Benign

0.11

Sift

Benign

1.0

T;.;T;T

Sift4G

Benign

1.0

T;T;T;T

Polyphen

0.0

B;.;B;B

Vest4

0.14

MVP

0.26

MPC

0.21

ClinPred

0.091

GERP RS

4.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.045

gMVP

0.19

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0016

dbscSNV1_RF

Benign

0.044

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