rs776710848

chr12-120978920-G-Achr12-120978920-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 4P and 3B. PM1PM2BP4_ModerateBP6

The NM_000545.8(HNF1A):c.152G>A(p.Gly51Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000248 in 1,611,622 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 11/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G51V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

HNF1A
NM_000545.8 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 1.63

Variant links:

Genes affected

HNF1A (HGNC:11621): (HNF1 homeobox A) The protein encoded by this gene is a transcription factor required for the expression of several liver-specific genes. The encoded protein functions as a homodimer and binds to the inverted palindrome 5'-GTTAATNATTAAC-3'. Defects in this gene are a cause of maturity onset diabetes of the young type 3 (MODY3) and also can result in the appearance of hepatic adenomas. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Apr 2015]

HNF1A links:

HNF1A-AS1 (HGNC:26785): (HNF1A antisense RNA 1)

HNF1A-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 3 uncertain in NM_000545.8

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.25826627).

BP6

Variant 12-120978920-G-A is Benign according to our data. Variant chr12-120978920-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1727231.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Likely_benign=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
HNF1A	NM_000545.8 linkuse as main transcript	c.152G>A	p.Gly51Asp	missense_variant	1/10	ENST00000257555.11
HNF1A	NM_001306179.2 linkuse as main transcript	c.152G>A	p.Gly51Asp	missense_variant	1/10
HNF1A	NM_001406915.1 linkuse as main transcript	c.152G>A	p.Gly51Asp	missense_variant	1/9
HNF1A	XM_024449168.2 linkuse as main transcript	c.152G>A	p.Gly51Asp	missense_variant	1/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HNF1A	ENST00000257555.11 linkuse as main transcript	c.152G>A	p.Gly51Asp	missense_variant	1/10	1	NM_000545.8	P4
HNF1A-AS1	ENST00000619441.1 linkuse as main transcript	n.128+1724C>T		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152170

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000834

AC:

AN:

239690

Hom.:

AF XY:

0.00000763

AC XY:

AN XY:

130976

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.0000189

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000206

AC:

AN:

1459452

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

725982

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152170

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74340

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.00000825

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 04, 2023

Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt HNF1A protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. ClinVar contains an entry for this variant (Variation ID: 1727231). This variant has not been reported in the literature in individuals affected with HNF1A-related conditions. This variant is present in population databases (rs776710848, gnomAD 0.002%). This sequence change replaces glycine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 51 of the HNF1A protein (p.Gly51Asp). -

Maturity onset diabetes mellitus in young

Benign:1

Likely benign, criteria provided, single submitter

research

Clinical Genomics, Uppaluri K&H Personalized Medicine Clinic

Mutations in HNF1A gene can predispose to MODY3. It is associated with both micro and macrovascular complications of diabetes, especially cardiovascular complications. Associated with glucosuria. May respond well to sulfonylureas. However, more evidence is required to confer the association of this particular variant rs776710848 with MODY3. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.095

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Uncertain

0.020

Cadd

Benign

Dann

Benign

0.91

Eigen

Benign

-0.78

Eigen_PC

Benign

-0.82

FATHMM_MKL

Benign

0.34

LIST_S2

Benign

0.84

T;T;T;T;T;T

M_CAP

Pathogenic

0.58

MetaRNN

Benign

0.26

T;T;T;T;T;T

MetaSVM

Uncertain

0.41

MutationTaster

Benign

1.0

N;N;N;N;N

PrimateAI

Benign

0.45

PROVEAN

Benign

-0.84

N;.;.;.;N;N

REVEL

Uncertain

0.47

Sift

Benign

0.24

T;.;.;.;T;T

Sift4G

Benign

0.73

T;T;T;T;T;T

Polyphen

0.28

.;.;.;.;.;B

Vest4

0.26

MutPred

0.35

Loss of methylation at R54 (P = 0.0558);Loss of methylation at R54 (P = 0.0558);Loss of methylation at R54 (P = 0.0558);Loss of methylation at R54 (P = 0.0558);Loss of methylation at R54 (P = 0.0558);Loss of methylation at R54 (P = 0.0558);

MVP

0.84

MPC

0.27

ClinPred

0.091

GERP RS

2.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

gMVP

0.48

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