Genetic Variant FAM124B:p.Ser294Tyr (chr2-224380060-G-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

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

The NM_001122779.2(FAM124B):c.881C>A(p.Ser294Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.0000116 in 1,551,578 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

FAM124B
NM_001122779.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.02

Variant links:

Genes affected

FAM124B (HGNC:26224): (family with sequence similarity 124 member B) Located in mitochondrion and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

FAM124B links:

Genome browser will be placed here

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=0.17284998).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FAM124B	NM_001122779.2 link	c.881C>A	p.Ser294Tyr	missense_variant	Exon 2 of 2	ENST00000409685.4	NP_001116251.1	Q9H5Z6-1
FAM124B	NM_024785.3 link	c.*187C>A		3_prime_UTR_variant	Exon 3 of 3		NP_079061.2	Q9H5Z6-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FAM124B	ENST00000409685.4 link	c.881C>A	p.Ser294Tyr	missense_variant	Exon 2 of 2	2	NM_001122779.2	ENSP00000386895.3		Q9H5Z6-1
FAM124B	ENST00000389874 link	c.*187C>A		3_prime_UTR_variant	Exon 3 of 3	1		ENSP00000374524.3		Q9H5Z6-2

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152194

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000579

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000831

AC:

AN:

156448

Hom.:

AF XY:

0.0000965

AC XY:

AN XY:

82938

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00110

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000165

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000107

AC:

AN:

1399384

Hom.:

Cov.:

AF XY:

0.00000869

AC XY:

AN XY:

690196

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000371

Gnomad4 OTH exome

AF:

0.0000345

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152194

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74342

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000579

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.0000189

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 26, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.881C>A (p.S294Y) alteration is located in exon 2 (coding exon 2) of the FAM124B gene. This alteration results from a C to A substitution at nucleotide position 881, causing the serine (S) at amino acid position 294 to be replaced by a tyrosine (Y). 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

0.087

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.29

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.067

Eigen

Uncertain

0.37

Eigen_PC

Uncertain

0.30

FATHMM_MKL

Benign

0.69

LIST_S2

Benign

0.52

M_CAP

Benign

0.033

MetaRNN

Benign

0.17

MetaSVM

Benign

-0.81

MutationAssessor

Benign

1.5

PrimateAI

Benign

0.33

PROVEAN

Benign

-1.9

REVEL

Benign

0.18

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.012

Polyphen

1.0

Vest4

0.27

MutPred

0.23

Gain of sheet (P = 0.0344);

MVP

0.62

MPC

0.59

ClinPred

0.20

GERP RS

5.7

Varity_R

0.18

gMVP

0.50

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