12-120994314-G-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2BP4_StrongBP6_ModerateBP7

The NM_000545.8(HNF1A):c.864G>T(p.Gly288Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000125 in 1,605,224 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. G288G) has been classified as Benign.

Frequency

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

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

HNF1A
NM_000545.8 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.278

Publications

53 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

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.55).

BP6

Variant 12-120994314-G-T is Benign according to our data. Variant chr12-120994314-G-T is described in ClinVar as Likely_benign. ClinVar VariationId is 3702545.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=-0.278 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
HNF1A	NM_000545.8 link	c.864G>T	p.Gly288Gly	synonymous_variant	Exon 4 of 10	ENST00000257555.11	NP_000536.6
HNF1A	NM_001306179.2 link	c.864G>T	p.Gly288Gly	synonymous_variant	Exon 4 of 10		NP_001293108.2
HNF1A	NM_001406915.1 link	c.864G>T	p.Gly288Gly	synonymous_variant	Exon 4 of 9		NP_001393844.1
HNF1A	XM_024449168.2 link	c.864G>T	p.Gly288Gly	synonymous_variant	Exon 4 of 9		XP_024304936.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HNF1A	ENST00000257555.11 link	c.864G>T	p.Gly288Gly	synonymous_variant	Exon 4 of 10	1	NM_000545.8	ENSP00000257555.5

Frequencies

GnomAD3 genomes

AF:

0.00000659

AC:

AN:

151668

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

6.88e-7

AC:

AN:

1453556

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

722644

show subpopulations

African (AFR)

AF:

0.0000300

AC:

AN:

33374

American (AMR)

AF:

0.00

AC:

AN:

43066

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25844

East Asian (EAS)

AF:

0.00

AC:

AN:

39592

South Asian (SAS)

AF:

0.00

AC:

AN:

85560

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52506

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5756

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1107802

Other (OTH)

AF:

0.00

AC:

AN:

60056

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000659

AC:

AN:

151668

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74030

show subpopulations

African (AFR)

AF:

0.0000242

AC:

AN:

41250

American (AMR)

AF:

0.00

AC:

AN:

15242

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4790

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10554

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67880

Other (OTH)

AF:

0.00

AC:

AN:

2084

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

1733

Bravo

AF:

0.00000378

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Benign:1

May 10, 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

0.085

BayesDel_noAF

Benign

-0.55

CADD

Benign

6.2

(source)

DANN

Benign

0.85

PhyloP100

-0.28

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over