rs201934320

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM1BP6BS2

The NM_000545.8(HNF1A):c.521C>T(p.Ala174Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000737 in 1,614,080 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 0.00012 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000069 ( 0 hom. )

Consequence

HNF1A
NM_000545.8 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:2

Conservation

PhyloP100: 1.76

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 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

BP6

Variant 12-120989027-C-T is Benign according to our data. Variant chr12-120989027-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 435429.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=2}.

BS2

High AC in GnomAd4 at 18 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HNF1A	NM_000545.8 link	c.521C>T	p.Ala174Val	missense_variant	Exon 2 of 10	ENST00000257555.11	NP_000536.6	P20823E0YMI7
HNF1A	NM_001306179.2 link	c.521C>T	p.Ala174Val	missense_variant	Exon 2 of 10		NP_001293108.2	P20823E0YMI7
HNF1A	NM_001406915.1 link	c.521C>T	p.Ala174Val	missense_variant	Exon 2 of 9		NP_001393844.1
HNF1A	XM_024449168.2 link	c.521C>T	p.Ala174Val	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.521C>T	p.Ala174Val	missense_variant	Exon 2 of 10	1	NM_000545.8	ENSP00000257555.5		A0A0A0MQU7

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152174

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000458

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00104

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000200

AC:

AN:

250584

Hom.:

AF XY:

0.000148

AC XY:

AN XY:

135492

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000694

Gnomad ASJ exome

AF:

0.000298

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000836

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.000490

GnomAD4 exome

AF:

0.0000691

AC:

101

AN:

1461788

Hom.:

Cov.:

AF XY:

0.0000660

AC XY:

AN XY:

727182

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000715

Gnomad4 ASJ exome

AF:

0.0000765

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.000787

Gnomad4 NFE exome

AF:

0.0000126

Gnomad4 OTH exome

AF:

0.000166

GnomAD4 genome

AF:

0.000118

AC:

AN:

152292

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74470

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000457

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00104

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000143

Hom.:

Bravo

AF:

0.000125

ExAC

AF:

0.000123

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1Benign:1

Apr 12, 2017

Genetic Services Laboratory, University of Chicago

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jun 08, 2023

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.521C>T (p.Ala174Val) results in a non-conservative amino acid change in 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 0.0002 in 250584 control chromosomes in GnomAD. The observed variant frequency is approximately 8.0 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), strongly suggesting that the variant is benign. c.521C>T has been reported in the literature in individuals affected with features of Maturity Onset Diabetes Of The Young without strong evidence for causality (example: Bellann-Chantelot_2007, Furuzawa_2008, Colclough_2022, Bonnefond_2020). These reports do not provide unequivocal conclusions about association of the variant with Maturity Onset Diabetes Of The Young 3. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 18003757, 33046911, 34789499, 18672310, 33729509). Two clinical diagnostic laboratories have submitted clinical-significance assessments (likely benign and uncertain significance, respectively) for this variant to ClinVar after 2014 without evidence for independent evaluation. Based on the evidence outlined above, the variant was classified as likely benign. -

not provided

Uncertain:1Benign:1

Jan 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

HNF1A: PM2 -

Dec 31, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.29

BayesDel_addAF

Uncertain

0.026

BayesDel_noAF

Pathogenic

0.17

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.32

.;T;T;T;T;.

Eigen

Benign

0.13

Eigen_PC

Benign

0.20

FATHMM_MKL

Benign

0.69

LIST_S2

Uncertain

0.92

D;D;D;D;D;D

M_CAP

Pathogenic

0.47

MetaRNN

Uncertain

0.43

T;T;T;T;T;T

MetaSVM

Pathogenic

1.0

PrimateAI

Uncertain

0.77

PROVEAN

Benign

-1.6

N;.;.;.;N;N

REVEL

Pathogenic

0.65

Sift

Benign

0.22

T;.;.;.;T;T

Sift4G

Benign

0.28

T;T;T;T;T;T

Polyphen

0.81

.;.;.;.;.;P

Vest4

0.70

MVP

0.96

MPC

1.2

ClinPred

0.067

GERP RS

4.9

gMVP

0.96

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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