Genetic Variant FAM47A:p.Arg552Trp (chrX-34130625-G-A) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_203408.4(FAM47A):c.1654C>T(p.Arg552Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000157 in 1,207,290 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 5 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., 1 hem., cov: 21)

Exomes 𝑓: 0.000013 ( 0 hom. 4 hem. )

Consequence

FAM47A
NM_203408.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.82

Variant links:

Genes affected

FAM47A (HGNC:29962): (family with sequence similarity 47 member A)

FAM47A links:

ENSG00000233928 (HGNC:):

ENSG00000233928 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.046459854).

BS2

High Hemizygotes in GnomAdExome4 at 4 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FAM47A	NM_203408.4 link	c.1654C>T	p.Arg552Trp	missense_variant	Exon 1 of 1	ENST00000346193.5	NP_981953.2	Q5JRC9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FAM47A	ENST00000346193.5 link	c.1654C>T	p.Arg552Trp	missense_variant	Exon 1 of 1	6	NM_203408.4	ENSP00000345029.3		Q5JRC9

Frequencies

GnomAD3 genomes

AF:

0.0000456

AC:

AN:

109676

Hom.:

Cov.:

AF XY:

0.0000312

AC XY:

AN XY:

32092

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000291

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000581

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:

0.0000221

AC:

AN:

180906

Hom.:

AF XY:

0.0000301

AC XY:

AN XY:

66338

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000736

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000146

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:

0.0000128

AC:

AN:

1097567

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

362967

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000855

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000331

Gnomad4 SAS exome

AF:

0.0000185

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000119

Gnomad4 OTH exome

AF:

0.000174

GnomAD4 genome

AF:

0.0000456

AC:

AN:

109723

Hom.:

Cov.:

AF XY:

0.0000311

AC XY:

AN XY:

32149

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000291

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000582

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000214

Hom.:

Bravo

AF:

0.000117

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 04, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1654C>T (p.R552W) alteration is located in exon 1 (coding exon 1) of the FAM47A gene. This alteration results from a C to T substitution at nucleotide position 1654, causing the arginine (R) at amino acid position 552 to be replaced by a tryptophan (W). 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

0.26

BayesDel_addAF

Benign

-0.62

BayesDel_noAF

Benign

-0.83

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.0070

T;.

FATHMM_MKL

Benign

0.0053

LIST_S2

Benign

0.65

T;T

M_CAP

Benign

0.0012

MetaRNN

Benign

0.046

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.0

M;.

PrimateAI

Benign

0.30

PROVEAN

Benign

-1.6

N;.

REVEL

Benign

0.038

Sift

Uncertain

0.0020

D;.

Sift4G

Uncertain

0.012

D;D

Polyphen

1.0

D;.

Vest4

0.11

MutPred

0.20

Gain of ubiquitination at K549 (P = 0.0353);.;

MVP

0.043

MPC

0.74

ClinPred

0.21

GERP RS

-0.92

Varity_R

0.092

gMVP

0.14

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