12-120994321-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP2BS3_SupportingBS1

This summary comes from the ClinGen Evidence Repository: The c.871C>T variant in the HNF1 homeobox A gene, HNF1A, causes an amino acid change of proline to serine at codon 291 (p.(Pro291Ser)) of NM_000545.8. •This variant has been observed in unknown phase with the variant c.494G>A, p.Trp165Ter (internal lab contributors), which is classified as pathogenic by the ClinGen MDEP (BP2). Functional studies demonstrated the p.Pro291Ser protein has abnormal nuclear localization above 75% of wildtype, indicating that this variant does not impact protein function (PMID:32910913) (BS3_Supporting). Lastly, this variant has a Popmax Filtering allele frequency in gnomAD 2.1.1 of 0.00001163, which is greater than or equal to the MDEP threshold for BS1 (≥0.000033) (BS1). In summary, c.871C>T meets the criteria to be classified as likely benign for monogenic diabetes. ACMG/AMP criteria applied, as specified by the ClinGen MDEP (specification version 1.0, approved 9/30/2021): BP2, BS3_Supporting, BS1 LINK:https://erepo.genome.network/evrepo/ui/classification/CA6831856/MONDO:0007453/017

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

HNF1A
NM_000545.8 missense

Scores

Clinical Significance

Likely benign reviewed by expert panel B:8

Conservation

PhyloP100: 0.661

Publications

15 publications found

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 Gene-Disease associations (from GenCC):

monogenic diabetes
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
type 1 diabetes mellitus 20
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Genomics England PanelApp
diabetes mellitus, noninsulin-dependent
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
maturity-onset diabetes of the young type 3
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
hyperinsulinism due to HNF1A deficiency
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
maturity-onset diabetes of the young
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
nonpapillary renal cell carcinoma
Inheritance: Unknown Classification: NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae)

HNF1A links:

Genome browser will be placed here

ACMG classification

Specifications for HNF1A are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP2

For more information check the summary or visit ClinGen Evidence Repository.

BS1

For more information check the summary or visit ClinGen Evidence Repository.

BS3

For more information check the summary or visit ClinGen Evidence Repository.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000545.8. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
HNF1A	NM_000545.8	MANE Select	c.871C>T	p.Pro291Ser	missense	Exon 4 of 10	NP_000536.6
HNF1A	NM_001306179.2		c.871C>T	p.Pro291Ser	missense	Exon 4 of 10	NP_001293108.2	F5H0K0
HNF1A	NM_001406915.1		c.871C>T	p.Pro291Ser	missense	Exon 4 of 9	NP_001393844.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
HNF1A	ENST00000257555.11	TSL:1 MANE Select	c.871C>T	p.Pro291Ser	missense	Exon 4 of 10	ENSP00000257555.5	P20823-1
HNF1A	ENST00000544413.2	TSL:1	c.871C>T	p.Pro291Ser	missense	Exon 4 of 10	ENSP00000438804.1	F5H0K0
HNF1A	ENST00000538646.5	TSL:1	n.684C>T		non_coding_transcript_exon	Exon 3 of 6	ENSP00000443964.1	P20823-4

Frequencies

GnomAD3 genomes

AF:

0.000145

AC:

AN:

152216

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00490

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000254

AC:

AN:

239706

AF XY:

0.000276

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000300

Gnomad ASJ exome

AF:

0.00559

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000369

Gnomad OTH exome

AF:

0.000341

GnomAD4 exome

AF:

0.000136

AC:

198

AN:

1457718

Hom.:

Cov.:

AF XY:

0.000142

AC XY:

103

AN XY:

724894

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33432

American (AMR)

AF:

0.0000228

AC:

AN:

43876

Ashkenazi Jewish (ASJ)

AF:

0.00487

AC:

126

AN:

25892

East Asian (EAS)

AF:

0.00

AC:

AN:

39606

South Asian (SAS)

AF:

0.0000117

AC:

AN:

85634

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52904

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000378

AC:

AN:

1110428

Other (OTH)

AF:

0.000465

AC:

AN:

60182

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.510

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:

0.000145

AC:

AN:

152216

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74354

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41450

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00490

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68032

Other (OTH)

AF:

0.000478

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.530

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:

0.000346

Hom.:

Bravo

AF:

0.000102

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000165

AC:

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:reviewed by expert panel

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

not specified (2)

HNF1A-related disorder (1)

Maturity-onset diabetes of the young (1)

Maturity-onset diabetes of the young type 3 (1)

Monogenic diabetes (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.053

BayesDel_addAF

Uncertain

0.13

BayesDel_noAF

Uncertain

0.060

CADD

Benign

5.2

(source)

DANN

Benign

0.47

DEOGEN2

Benign

0.38

Eigen

Benign

-1.0

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.16

LIST_S2

Benign

0.74

M_CAP

Uncertain

0.17

MetaRNN

Benign

0.019

MetaSVM

Uncertain

-0.27

PhyloP100

0.66

PrimateAI

Benign

0.46

PROVEAN

Benign

0.20

REVEL

Uncertain

0.57

Sift

Benign

0.42

Sift4G

Benign

0.61

Polyphen

0.0

Vest4

0.40

MVP

0.96

MPC

0.12

ClinPred

0.016

GERP RS

1.6

gMVP

0.46

Mutation Taster

=5/95

disease causing

(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