Genetic Variant FAM81B:p.Ser80Phe (chr5-95396121-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_152548.3(FAM81B):c.239C>T(p.Ser80Phe) variant causes a missense change. The variant allele was found at a frequency of 0.0000541 in 1,608,274 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000058 ( 0 hom. )

Consequence

FAM81B
NM_152548.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.72

Variant links:

Genes affected

FAM81B (HGNC:26335): (family with sequence similarity 81 member B) Located in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

FAM81B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FAM81B	NM_152548.3 link	c.239C>T	p.Ser80Phe	missense_variant	Exon 3 of 10	ENST00000283357.10	NP_689761.2	Q96LP2
FAM81B	XM_011543207.2 link	c.239C>T	p.Ser80Phe	missense_variant	Exon 3 of 9		XP_011541509.1
FAM81B	XM_047416821.1 link	c.239C>T	p.Ser80Phe	missense_variant	Exon 3 of 8		XP_047272777.1
FAM81B	XM_047416822.1 link	c.239C>T	p.Ser80Phe	missense_variant	Exon 3 of 6		XP_047272778.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FAM81B	ENST00000283357.10 link	c.239C>T	p.Ser80Phe	missense_variant	Exon 3 of 10	1	NM_152548.3	ENSP00000283357.5		Q96LP2

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000286

AC:

AN:

244826

Hom.:

AF XY:

0.0000150

AC XY:

AN XY:

132966

show subpopulations

Gnomad AFR exome

AF:

0.000131

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:

0.0000357

Gnomad OTH exome

AF:

0.000168

GnomAD4 exome

AF:

0.0000577

AC:

AN:

1456092

Hom.:

Cov.:

AF XY:

0.0000580

AC XY:

AN XY:

724384

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000739

Gnomad4 OTH exome

AF:

0.0000332

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152182

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74340

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000565

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.0000166

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 22, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.239C>T (p.S80F) alteration is located in exon 3 (coding exon 3) of the FAM81B gene. This alteration results from a C to T substitution at nucleotide position 239, causing the serine (S) at amino acid position 80 to be replaced by a phenylalanine (F). 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

-0.15

BayesDel_noAF

Benign

-0.22

CADD

Uncertain

DANN

Uncertain

1.0

Eigen

Pathogenic

0.72

Eigen_PC

Pathogenic

0.70

FATHMM_MKL

Uncertain

0.87

M_CAP

Benign

0.019

MetaRNN

Uncertain

0.45

MetaSVM

Benign

-0.79

PrimateAI

Benign

0.39

PROVEAN

Benign

-1.1

REVEL

Benign

0.15

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0020

Vest4

0.60

MutPred

0.23

Loss of phosphorylation at S80 (P = 0.0097);

MVP

0.47

MPC

0.48

ClinPred

0.30

GERP RS

5.8

gMVP

0.16

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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