NM_000545.8:c.341G>A

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM1BS2

The NM_000545.8(HNF1A):c.341G>A(p.Arg114His) variant causes a missense change. The variant allele was found at a frequency of 0.0000483 in 1,614,100 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000047 ( 0 hom. )

Consequence

HNF1A
NM_000545.8 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:1O:1

Conservation

PhyloP100: 3.58

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:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM1

In a domain POU-specific atypical (size 95) in uniprot entity HNF1A_HUMAN there are 52 pathogenic changes around while only 3 benign (95%) in NM_000545.8

BS2

High AC in GnomAd4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HNF1A	NM_000545.8 link	c.341G>A	p.Arg114His	missense_variant	Exon 2 of 10	ENST00000257555.11	NP_000536.6	P20823E0YMI7
HNF1A	NM_001306179.2 link	c.341G>A	p.Arg114His	missense_variant	Exon 2 of 10		NP_001293108.2	P20823E0YMI7
HNF1A	NM_001406915.1 link	c.341G>A	p.Arg114His	missense_variant	Exon 2 of 9		NP_001393844.1
HNF1A	XM_024449168.2 link	c.341G>A	p.Arg114His	missense_variant	Exon 2 of 9		XP_024304936.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HNF1A	ENST00000257555.11 link	c.341G>A	p.Arg114His	missense_variant	Exon 2 of 10	1	NM_000545.8	ENSP00000257555.5		A0A0A0MQU7

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152226

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000398

AC:

AN:

251282

Hom.:

AF XY:

0.0000442

AC XY:

AN XY:

135830

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.0000289

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:

0.0000616

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000472

AC:

AN:

1461874

Hom.:

Cov.:

AF XY:

0.0000481

AC XY:

AN XY:

727236

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000558

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152226

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74356

show subpopulations

Gnomad4 AFR

AF:

0.000121

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000111

Hom.:

Bravo

AF:

0.0000642

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:6Benign:1Other:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:3

Breakthrough Genomics, Breakthrough Genomics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Aug 27, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces arginine with histidine at codon 114 of the HNF1A protein (p.Arg114His). The arginine residue is moderately conserved and there is a small physicochemical difference between arginine and histidine. This variant is present in population databases (rs139016696, ExAC 0.009%). This missense change has been observed in individual(s) with maturity-onset diabetes of the young (PMID: 23771925, 27899486). ClinVar contains an entry for this variant (Variation ID: 134508). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. Experimental studies have shown that this missense change does not substantially affect HNF1A function (PMID: 27899486). 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. -

Aug 21, 2020

Seattle Children's Hospital Molecular Genetics Laboratory, Seattle Children's Hospital

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant substitutes the arginine at position 114 with histidine. This is a semi-conserved residue (the alternate residue histidine is observed in several species) and in silico tools have conflicting predictions about the possible impact of this missense change on protein function. This is a rare variant, observed in 14 of 282,682 alleles in the Genome Aggregation Database (v2.1.1). There are conflicting reports in the literature about the clinical significance of this variant. The p.Arg114His variant has been reported as pathogenic in a single individual with MODY (PMID: 23771925). Clinical details and inheritance information were not available. The p.Arg114His variant has also been reported in a cohort of healthy adults (PMID: 24728327, Table S1). Functional studies assessing transcriptional activation and subcellular nuclear localization showed only modest changes for the p.Arg114His variant in comparison to wildtype HNF1A (PMID: 27899486). -

not specified

Uncertain:1Benign:1Other:1

Nov 04, 2015

Genetic Services Laboratory, University of Chicago

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jul 16, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: HNF1A c.341G>A (p.Arg114His) results in a non-conservative amino acid change located in the hepatocyte nuclear factor 1, N-terminal domain (IPR006899) of the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 4.4e-05 in 252644 control chromosomes. The variant allele was found at a frequency of 4.9e-05 in 1615462 control chromosomes. The observed variant frequency is approximately 2 fold of the estimated maximal expected allele frequency for a pathogenic variant in HNF1A causing Maturity Onset Diabetes Of The Young 3 phenotype (2.5e-05). c.341G>A has been reported in the literature in individuals affected with diabetes mellitus and suspected of maturity-onset diabetes of the young (MODY) (e.g. Najmi_2017, Pihoker_2013) as well as in unaffected individuals (e.g. Najmi_2017, Bodian_2014). Experimental studies using HeLa cells in vitro showed that this variant results in 83-100% transactivation activity and 81% nuclear localization compared to wildtype (e.g. Najmi_2017, Kickova_2014). The following publications have been ascertained in the context of this evaluation (PMID: 24728327, 38093550, 27899486, 23771925). ClinVar contains an entry for this variant (Variation ID: 134508). Based on the evidence outlined above, the variant was classified as likely benign. -

Sep 19, 2013

ITMI

Significance: not provided

Review Status: no classification provided

Collection Method: reference population

- -

Diabetes mellitus type 1;C0011860:Type 2 diabetes mellitus;C1838100:Maturity-onset diabetes of the young type 3;C1840646:Hepatic adenomas, familial;C2675866:Type 1 diabetes mellitus 20;CN074294:Nonpapillary renal cell carcinoma

Uncertain:1

May 19, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Diabetes mellitus type 1;C0011860:Type 2 diabetes mellitus;C1838100:Maturity-onset diabetes of the young type 3;C2675866:Type 1 diabetes mellitus 20

Uncertain:1

Oct 26, 2021

New York Genome Center

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Uncertain

0.044

BayesDel_noAF

Uncertain

0.010

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.70

.;D;T;D;T;.

Eigen

Benign

0.074

Eigen_PC

Benign

0.21

FATHMM_MKL

Uncertain

0.83

LIST_S2

Uncertain

0.97

D;D;D;D;D;D

M_CAP

Pathogenic

0.54

MetaRNN

Uncertain

0.47

T;T;T;T;T;T

MetaSVM

Uncertain

0.75

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-1.7

N;.;.;.;N;N

REVEL

Uncertain

0.58

Sift

Benign

0.29

T;.;.;.;T;T

Sift4G

Benign

0.27

T;T;T;T;T;T

Polyphen

0.51

.;.;.;.;.;P

Vest4

0.51

MVP

0.90

MPC

1.2

ClinPred

0.087

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

gMVP

0.74

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