rs56158114

Positions:

• chr12-120979099-G-GGAGCC

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP6_Very_Strong BS2

The NM_000545.8(HNF1A):​c.326+6_326+10dup variant causes a splice donor region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000698 in 1,605,852 control chromosomes in the GnomAD database, including 10 homozygotes. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0038 (7 hom., cov: 32)
  • Exomes 𝑓: 0.00037 (3 hom.)
• Consequence: HNF1A NM_000545.8 splice_donor_region, intron
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8
• Conservation: PhyloP100: 0.601

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

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP6: Variant 12-120979099-G-GGAGCC is Benign according to our data. Variant chr12-120979099-G-GGAGCC is described in ClinVar as [Likely_benign]. Clinvar id is 256599.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS2: High AC in GnomAd4 at 586 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HNF1A	NM_000545.8	c.326+6_326+10dup		splice_donor_region_variant, intron_variant		ENST00000257555.11	NP_000536.6
HNF1A	NM_001306179.2	c.326+6_326+10dup		splice_donor_region_variant, intron_variant			NP_001293108.2
HNF1A	NM_001406915.1	c.326+6_326+10dup		splice_donor_region_variant, intron_variant			NP_001393844.1
HNF1A	XM_024449168.2	c.326+6_326+10dup		splice_donor_region_variant, intron_variant			XP_024304936.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HNF1A	ENST00000257555.11	c.326+6_326+10dup		splice_donor_region_variant, intron_variant		1	NM_000545.8	ENSP00000257555	P4
HNF1A-AS1	ENST00000619441.1	n.128+1544_128+1545insGGCTC		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes AF: 0.00385 AC: 586 AN: 152216 Hom.: 7 Cov.: 32

Gnomad AFR AF: 0.0134

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000982

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00949

Gnomad NFE AF: 0.000103

Gnomad OTH AF: 0.00239

GnomAD3 exomes AF: 0.000857 AC: 195 AN: 227430 Hom.: 2 AF XY: 0.000667 AC XY: 83 AN XY: 124416

Gnomad AFR exome AF: 0.0118

Gnomad AMR exome AF: 0.000636

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: 0.0000899

Gnomad OTH exome AF: 0.000530

GnomAD4 exome AF: 0.000368 AC: 535 AN: 1453518 Hom.: 3 Cov.: 35 AF XY: 0.000336 AC XY: 243 AN XY: 722224

Gnomad4 AFR exome AF: 0.0114

Gnomad4 AMR exome AF: 0.000663

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000354

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000649

Gnomad4 OTH exome AF: 0.000749

GnomAD4 genome AF: 0.00385 AC: 586 AN: 152334 Hom.: 7 Cov.: 32 AF XY: 0.00361 AC XY: 269 AN XY: 74480

Gnomad4 AFR AF: 0.0134

Gnomad4 AMR AF: 0.000980

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000103

Gnomad4 OTH AF: 0.00236

Alfa AF: 0.00240 Hom.: 1

Bravo AF: 0.00422

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:3

Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Aug 02, 2017	- -
Benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Jan 19, 2021	- -

Maturity onset diabetes mellitus in young Benign:2

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 rs56158114 with MODY3. -
Benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Feb 13, 2015	This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

not provided Benign:2

Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Sep 21, 2023	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	May 03, 2017	This variant is associated with the following publications: (PMID: 10690959) -

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 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Sep 27, 2021

- -

Computational scores

Source: dbNSFP v4.3

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs56158114; hg19: chr12-121416902;