Genetic Variant FAM163B:p.Arg148Cys (chr9-133579081-G-A) – 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_001080515.3(FAM163B):c.442C>T(p.Arg148Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000358 in 1,590,706 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 0.000053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

FAM163B
NM_001080515.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.29

Variant links:

Genes affected

FAM163B (HGNC:33277): (family with sequence similarity 163 member B) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

FAM163B links:

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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=0.085404575).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FAM163B	NM_001080515.3 link	c.442C>T	p.Arg148Cys	missense_variant	Exon 3 of 3	ENST00000673969.1	NP_001073984.1	P0C2L3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FAM163B	ENST00000673969.1 link	c.442C>T	p.Arg148Cys	missense_variant	Exon 3 of 3		NM_001080515.3	ENSP00000501259.1		P0C2L3
FAM163B	ENST00000496132.2 link	c.442C>T	p.Arg148Cys	missense_variant	Exon 3 of 3	3		ENSP00000419867.1		P0C2L3

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152210

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:

0.000577

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.000103

AC:

AN:

184450

Hom.:

AF XY:

0.000108

AC XY:

AN XY:

101972

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000732

Gnomad SAS exome

AF:

0.0000755

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000787

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000341

AC:

AN:

1438380

Hom.:

Cov.:

AF XY:

0.0000448

AC XY:

AN XY:

714276

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000306

Gnomad4 SAS exome

AF:

0.0000948

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000218

Gnomad4 OTH exome

AF:

0.0000843

GnomAD4 genome

AF:

0.0000525

AC:

AN:

152326

Hom.:

Cov.:

AF XY:

0.0000537

AC XY:

AN XY:

74476

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000578

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.000474

Alfa

AF:

0.0000992

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.000130

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 21, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.442C>T (p.R148C) alteration is located in exon 2 (coding exon 2) of the FAM163B gene. This alteration results from a C to T substitution at nucleotide position 442, causing the arginine (R) at amino acid position 148 to be replaced by a cysteine (C). 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

Pathogenic

0.62

BayesDel_addAF

Uncertain

0.075

BayesDel_noAF

Pathogenic

0.24

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.099

T;T

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.57

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.91

D;.

M_CAP

Benign

0.033

MetaRNN

Benign

0.085

T;T

MetaSVM

Uncertain

-0.17

MutationAssessor

Uncertain

2.7

M;M

PrimateAI

Pathogenic

0.79

PROVEAN

Uncertain

-4.0

D;D

REVEL

Uncertain

0.41

Sift

Benign

0.036

D;D

Sift4G

Uncertain

0.017

D;D

Polyphen

1.0

D;D

Vest4

0.73

MVP

0.14

MPC

2.3

ClinPred

0.42

GERP RS

4.1

Varity_R

0.41

gMVP

0.53

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