13-27924669-G-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 1P and 5B. PP2BP4_StrongBS1_Supporting

The NM_000209.4(PDX1):c.820G>T(p.Val274Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000224 in 1,471,184 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V274I) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

PDX1
NM_000209.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 0.179

Publications

0 publications found

Variant links:

Genes affected

PDX1 (HGNC:6107): (pancreatic and duodenal homeobox 1) The protein encoded by this gene is a transcriptional activator of several genes, including insulin, somatostatin, glucokinase, islet amyloid polypeptide, and glucose transporter type 2. The encoded nuclear protein is involved in the early development of the pancreas and plays a major role in glucose-dependent regulation of insulin gene expression. Defects in this gene are a cause of pancreatic agenesis, which can lead to early-onset insulin-dependent diabetes mellitus (IDDM), as well as maturity onset diabetes of the young type 4 (MODY4). [provided by RefSeq, Aug 2017]

PDX1 Gene-Disease associations (from GenCC):

maturity-onset diabetes of the young type 4
Inheritance: AR, AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Ambry Genetics, Labcorp Genetics (formerly Invitae)
pancreatic agenesis 1
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Ambry Genetics, Genomics England PanelApp
permanent neonatal diabetes mellitus
Inheritance: AD, AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp
monogenic diabetes
Inheritance: AD Classification: MODERATE Submitted by: ClinGen
maturity-onset diabetes of the young
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
pancreatic agenesis
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

PDX1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 7 curated pathogenic missense variants (we use a threshold of 10). The gene has 1 curated benign missense variants. Gene score misZ: -0.26592 (below the threshold of 3.09). Trascript score misZ: -1.1553 (below the threshold of 3.09). GenCC associations: The gene is linked to permanent neonatal diabetes mellitus, pancreatic agenesis, maturity-onset diabetes of the young type 4, pancreatic agenesis 1, monogenic diabetes, maturity-onset diabetes of the young.

BP4

Computational evidence support a benign effect (MetaRNN=0.0638015).

BS1

Variant frequency is greater than expected in population amr. GnomAdExome4 allele frequency = 0.000022 (29/1319012) while in subpopulation AMR AF = 0.000873 (24/27476). AF 95% confidence interval is 0.000601. There are 0 homozygotes in GnomAdExome4. There are 22 alleles in the male GnomAdExome4 subpopulation. Median coverage is 31. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000209.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PDX1	NM_000209.4	MANE Select	c.820G>T	p.Val274Phe	missense	Exon 2 of 2	NP_000200.1	P52945

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PDX1	ENST00000381033.5	TSL:1 MANE Select	c.820G>T	p.Val274Phe	missense	Exon 2 of 2	ENSP00000370421.4	P52945

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000228

AC:

AN:

83252

AF XY:

0.000273

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00101

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00125

GnomAD4 exome

AF:

0.0000220

AC:

AN:

1319012

Hom.:

Cov.:

AF XY:

0.0000339

AC XY:

AN XY:

649234

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

27050

American (AMR)

AF:

0.000873

AC:

AN:

27476

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23504

East Asian (EAS)

AF:

0.00

AC:

AN:

29502

South Asian (SAS)

AF:

0.00

AC:

AN:

70882

European-Finnish (FIN)

AF:

0.00

AC:

AN:

32894

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3930

European-Non Finnish (NFE)

AF:

0.00000191

AC:

AN:

1048916

Other (OTH)

AF:

0.0000547

AC:

AN:

54858

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152172

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74330

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41454

American (AMR)

AF:

0.000262

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.563

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000416

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

not specified (2)

Type 2 diabetes mellitus;C1833382:Maturity-onset diabetes of the young type 4;C3891828:Pancreatic agenesis 1 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.26

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.39

Eigen

Benign

-0.93

Eigen_PC

Benign

-0.88

FATHMM_MKL

Benign

0.38

LIST_S2

Benign

0.50

M_CAP

Uncertain

0.20

MetaRNN

Benign

0.064

MetaSVM

Benign

-0.58

MutationAssessor

Benign

0.90

PhyloP100

0.18

PrimateAI

Uncertain

0.72

PROVEAN

Benign

-0.85

REVEL

Benign

0.18

Sift

Uncertain

0.0070

Sift4G

Uncertain

0.049

Polyphen

0.15

Vest4

0.21

MutPred

0.25

Gain of glycosylation at P271 (P = 0.1234)

MVP

0.58

MPC

1.3

ClinPred

0.045

GERP RS

1.5

Varity_R

0.074

gMVP

0.55

Mutation Taster

=98/2

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over