6-31165186-G-C

Position:

• chr6-31165186-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_002701.6(POU5F1):​c.758C>G​(p.Pro253Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: POU5F1 NM_002701.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.82

Genes affected

POU5F1 (HGNC:9221): (POU class 5 homeobox 1) This gene encodes a transcription factor containing a POU homeodomain that plays a key role in embryonic development and stem cell pluripotency. Aberrant expression of this gene in adult tissues is associated with tumorigenesis. This gene can participate in a translocation with the Ewing's sarcoma gene on chromosome 21, which also leads to tumor formation. Alternative splicing, as well as usage of alternative AUG and non-AUG translation initiation codons, results in multiple isoforms. One of the AUG start codons is polymorphic in human populations. Related pseudogenes have been identified on chromosomes 1, 3, 8, 10, and 12. [provided by RefSeq, Oct 2013]

TCF19 (HGNC:11629): (transcription factor 19) This gene encodes a protein that contains a PHD-type zinc finger domain and likely functions as a transcription factor. The encoded protein plays a role proliferation and apoptosis of pancreatic beta cells. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.825

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
POU5F1	NM_002701.6	c.758C>G	p.Pro253Arg	missense_variant	4/5	ENST00000259915.13
POU5F1	NM_001173531.3	c.248C>G	p.Pro83Arg	missense_variant	4/5
POU5F1	NM_203289.6	c.248C>G	p.Pro83Arg	missense_variant	3/4
POU5F1	NM_001285986.2	c.170C>G	p.Pro57Arg	missense_variant	2/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
POU5F1	ENST00000259915.13	c.758C>G	p.Pro253Arg	missense_variant	4/5	1	NM_002701.6	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 36

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 01, 2023

The c.248C>G (p.P83R) alteration is located in exon 3 (coding exon 3) of the POU5F1 gene. This alteration results from a C to G substitution at nucleotide position 248, causing the proline (P) at amino acid position 83 to be replaced by an arginine (R). 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	0.91
BayesDel_addAF	Pathogenic	0.31	D
BayesDel_noAF	Pathogenic	0.20
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.87	D;D;D;.;D;D;D
Eigen	Uncertain	0.57
Eigen_PC	Uncertain	0.58
FATHMM_MKL	Benign	0.76	D
LIST_S2	Uncertain	0.96	.;.;.;D;.;D;D
M_CAP	Uncertain	0.13	D
MetaRNN	Pathogenic	0.83	D;D;D;D;D;D;D
MetaSVM	Uncertain	0.27	D
MutationAssessor	Benign	1.4	L;.;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.63	T
PROVEAN	Pathogenic	-7.1	D;D;D;.;D;.;.
REVEL	Pathogenic	0.68
Sift	Pathogenic	0.0	D;D;D;.;D;.;.
Sift4G	Uncertain	0.0040	D;D;D;D;D;D;D
Polyphen		1.0	D;.;.;.;.;.;.
Vest4		0.54
MutPred		0.51		Gain of MoRF binding (P = 0.0289);.;.;.;.;.;.;
MVP		0.92
MPC		2.2
ClinPred		0.99	D
GERP RS		5.2
Varity_R		0.35
gMVP		0.71

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr6-31132963;