Genetic Variant PROX1:p.Pro195Leu (chr1-213997119-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_001270616.2(PROX1):c.584C>T(p.Pro195Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000044 in 1,613,640 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000037 ( 1 hom. )

Consequence

PROX1
NM_001270616.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.94

Variant links:

Genes affected

PROX1 (HGNC:9459): (prospero homeobox 1) The protein encoded by this gene is a member of the homeobox transcription factor family. Members of this family contain a homeobox domain that consists of a 60-amino acid helix-turn-helix structure that binds DNA and RNA. The protein encoded by this gene is conserved across vertebrates and may play an essential role during development. Altered levels of this protein have been reported in cancers of different organs, such as colon, brain, blood, breast, pancreas, liver and esophagus. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2012]

PROX1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.119541794).

BS2

High AC in GnomAd4 at 17 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PROX1	NM_001270616.2 link	c.584C>T	p.Pro195Leu	missense_variant	Exon 2 of 5	ENST00000366958.9	NP_001257545.1	Q92786

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PROX1	ENST00000366958.9 link	c.584C>T	p.Pro195Leu	missense_variant	Exon 2 of 5	1	NM_001270616.2	ENSP00000355925.4	Q92786
PROX1	ENST00000435016.2 link	c.584C>T	p.Pro195Leu	missense_variant	Exon 2 of 5	1		ENSP00000400694.1	Q92786
PROX1	ENST00000471129.1 link	c.584C>T	p.Pro195Leu	missense_variant	Exon 2 of 2	3		ENSP00000419517.1	C9JU29
PROX1	ENST00000607425.1 link	c.*155C>T		downstream_gene_variant		3		ENSP00000475357.1	U3KPY6

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

152060

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000943

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00144

GnomAD3 exomes

AF:

0.000108

AC:

AN:

250970

Hom.:

AF XY:

0.0000811

AC XY:

AN XY:

135714

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000695

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:

0.0000264

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000369

AC:

AN:

1461580

Hom.:

Cov.:

AF XY:

0.0000426

AC XY:

AN XY:

727094

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000716

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000162

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000112

AC:

AN:

152060

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74256

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000943

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00144

Alfa

AF:

0.000142

Hom.:

Bravo

AF:

0.000268

ExAC

AF:

0.0000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 21, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.584C>T (p.P195L) alteration is located in exon 2 (coding exon 1) of the PROX1 gene. This alteration results from a C to T substitution at nucleotide position 584, causing the proline (P) at amino acid position 195 to be replaced by a leucine (L). 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

0.089

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.23

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Uncertain

0.50

.;D;D;D;D

Eigen

Uncertain

0.19

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.92

D;.;.;D;.

M_CAP

Benign

0.012

MetaRNN

Benign

0.12

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

.;N;N;N;N

PrimateAI

Uncertain

0.69

PROVEAN

Uncertain

-2.5

D;N;N;N;N

REVEL

Benign

0.19

Sift

Benign

0.61

T;T;T;T;T

Sift4G

Uncertain

0.039

D;T;T;T;T

Polyphen

0.036

.;B;B;B;B

Vest4

0.56, 0.56, 0.57, 0.56

MutPred

0.46

Gain of helix (P = 0.0022);Gain of helix (P = 0.0022);Gain of helix (P = 0.0022);Gain of helix (P = 0.0022);Gain of helix (P = 0.0022);

MVP

0.58

MPC

0.74

ClinPred

0.083

GERP RS

6.1

Varity_R

0.13

gMVP

0.27

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