8-127416545-A-G

Position:

chr8-127416545-A-G

Variant summary

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

The NM_001159542.3(POU5F1B):c.679A>G(p.Met227Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000273 in 1,607,784 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00027 ( 0 hom. )

Consequence

POU5F1B
NM_001159542.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.532

Variant links:

Genes affected

POU5F1B (HGNC:9223): (POU class 5 homeobox 1B) This intronless gene was thought to be a transcribed pseudogene of POU class 5 homeobox 1, however, it has been reported that this gene can encode a functional protein. The encoded protein is nearly the same length as and highly similar to the POU class 5 homeobox 1 transcription factor, has been shown to be a weak transcriptional activator and may play a role in carcinogenesis and eye development. [provided by RefSeq, Apr 2009]

POU5F1B links:

CASC8 (HGNC:45129): (cancer susceptibility 8)

CASC8 links:

PCAT1 (HGNC:43022): (prostate cancer associated transcript 1) This gene produces a long non-coding RNA that promotes cell proliferation and is upregulated in prostate, colorectal, and other cancers. This RNA negatively regulates the BRCA2 tumor suppressor protein and positively regulates Myc oncoprotein. It contains binding sites for microRNAs, and may act as a sponge for microRNAs that regulate cell growth pathways. [provided by RefSeq, Dec 2017]

PCAT1 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=0.020087957).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
POU5F1B	NM_001159542.3 linkuse as main transcript	c.679A>G	p.Met227Val	missense_variant	1/1	ENST00000696633.1
CASC8	NR_117100.1 linkuse as main transcript	n.1176+4284T>C		intron_variant, non_coding_transcript_variant
POU5F1B	NM_001395745.1 linkuse as main transcript	c.679A>G	p.Met227Val	missense_variant	2/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
POU5F1B	ENST00000696633.1 linkuse as main transcript	c.679A>G	p.Met227Val	missense_variant	1/1		NM_001159542.3	P1
CASC8	ENST00000502082.5 linkuse as main transcript	n.1176+4284T>C		intron_variant, non_coding_transcript_variant		1

Frequencies

GnomAD3 genomes

AF:

0.000263

AC:

AN:

152084

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000785

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:

0.000382

Gnomad OTH

AF:

0.000958

GnomAD3 exomes

AF:

0.000236

AC:

AN:

241154

Hom.:

AF XY:

0.000177

AC XY:

AN XY:

130080

show subpopulations

Gnomad AFR exome

AF:

0.0000656

Gnomad AMR exome

AF:

0.000626

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:

0.000286

Gnomad OTH exome

AF:

0.000670

GnomAD4 exome

AF:

0.000274

AC:

399

AN:

1455700

Hom.:

Cov.:

116

AF XY:

0.000265

AC XY:

192

AN XY:

723508

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.000752

Gnomad4 ASJ exome

AF:

0.000154

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000117

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000306

Gnomad4 OTH exome

AF:

0.000349

GnomAD4 genome

AF:

0.000263

AC:

AN:

152084

Hom.:

Cov.:

AF XY:

0.000215

AC XY:

AN XY:

74286

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000785

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000382

Gnomad4 OTH

AF:

0.000958

Alfa

AF:

0.000222

Hom.:

ExAC

AF:

0.000140

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 25, 2022

The c.679A>G (p.M227V) alteration is located in exon 1 (coding exon 1) of the POU5F1B gene. This alteration results from a A to G substitution at nucleotide position 679, causing the methionine (M) at amino acid position 227 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

0.047

BayesDel_addAF

Benign

-0.51

BayesDel_noAF

Benign

-0.61

CADD

Benign

0.029

DANN

Benign

0.14

DEOGEN2

Benign

0.00064

T;T

Eigen

Benign

-1.8

Eigen_PC

Benign

-1.9

FATHMM_MKL

Benign

0.0015

LIST_S2

Benign

0.0018

.;T

M_CAP

Benign

0.0096

MetaRNN

Benign

0.020

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.55

N;N

MutationTaster

Benign

1.0

N;N

PrimateAI

Uncertain

0.56

PROVEAN

Benign

0.50

.;N

REVEL

Benign

0.16

Sift

Benign

0.94

.;T

Sift4G

Benign

0.88

.;T

Polyphen

0.0

B;B

Vest4

0.031

MVP

0.23

MPC

0.040

ClinPred

0.020

GERP RS

-2.3

Varity_R

0.054

gMVP

0.24

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