13-27920144-C-G

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2PP2PP3_Moderate

The NM_000209.4(PDX1):c.6C>G(p.Asn2Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000716 in 1,397,422 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. N2N) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

PDX1
NM_000209.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.944

Publications

2 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, Genomics England PanelApp, Ambry Genetics, Labcorp Genetics (formerly Invitae)
permanent neonatal diabetes mellitus
Inheritance: AR, AD Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet
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: Uncertain_significance. The variant received 5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

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 pancreatic agenesis 1, monogenic diabetes, pancreatic agenesis, maturity-onset diabetes of the young, permanent neonatal diabetes mellitus, maturity-onset diabetes of the young type 4.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.886

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PDX1	NM_000209.4 link	c.6C>G	p.Asn2Lys	missense_variant	Exon 1 of 2	ENST00000381033.5	NP_000200.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PDX1	ENST00000381033.5 link	c.6C>G	p.Asn2Lys	missense_variant	Exon 1 of 2	1	NM_000209.4	ENSP00000370421.4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000684

AC:

AN:

146108

AF XY:

0.0000127

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000408

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:

0.00

GnomAD4 exome

AF:

7.16e-7

AC:

AN:

1397422

Hom.:

Cov.:

AF XY:

0.00000145

AC XY:

AN XY:

689242

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31572

American (AMR)

AF:

0.0000280

AC:

AN:

35702

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25150

East Asian (EAS)

AF:

0.00

AC:

AN:

35726

South Asian (SAS)

AF:

0.00

AC:

AN:

79232

European-Finnish (FIN)

AF:

0.00

AC:

AN:

47858

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5594

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1078642

Other (OTH)

AF:

0.00

AC:

AN:

57946

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.46

BayesDel_addAF

Benign

-0.035

BayesDel_noAF

Benign

-0.17

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.64

Eigen

Uncertain

0.42

Eigen_PC

Uncertain

0.34

FATHMM_MKL

Uncertain

0.97

LIST_S2

Benign

0.49

M_CAP

Pathogenic

0.65

MetaRNN

Pathogenic

0.89

MetaSVM

Uncertain

0.47

MutationAssessor

Benign

1.9

PhyloP100

0.94

PrimateAI

Pathogenic

0.82

PROVEAN

Uncertain

-2.4

REVEL

Uncertain

0.64

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.022

Polyphen

1.0

Vest4

0.63

MutPred

0.51

Gain of catalytic residue at M1 (P = 0.0055);

MVP

0.89

MPC

2.3

ClinPred

0.88

GERP RS

3.3

PromoterAI

-0.0099

Neutral

(source)

Varity_R

0.61

gMVP

0.71

Mutation Taster

=71/29

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over