Genetic Variant HNF1A-AS1:n.135-1321G>A (chr12-120978242-C-T) – ACMG Classification: Benign (-16 pts)

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The ENST00000433033.3(HNF1A-AS1):n.135-1321G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000815 in 152,234 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00081 ( 3 hom., cov: 32)

Consequence

HNF1A-AS1
ENST00000433033.3 intron

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -0.293

Variant links:

Genes affected

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

HNF1A-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -16 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.84).

BP6

Variant 12-120978242-C-T is Benign according to our data. Variant chr12-120978242-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 387364.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS2

High Homozygotes in GnomAd4 at 3 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL
HNF1A-AS1	ENST00000433033.3 link	n.135-1321G>A	intron_variant	Intron 1 of 3	3
HNF1A-AS1	ENST00000535301.2 link	n.322+2402G>A	intron_variant	Intron 1 of 1	4
HNF1A-AS1	ENST00000537361.1 link	n.263+2402G>A	intron_variant	Intron 1 of 1	3

Frequencies

GnomAD3 genomes

AF:

0.000822

AC:

125

AN:

152116

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0174

Gnomad SAS

AF:

0.00104

Gnomad FIN

AF:

0.0000943

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000294

Gnomad OTH

AF:

0.00144

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome

AF:

0.000815

AC:

124

AN:

152234

Hom.:

Cov.:

AF XY:

0.00106

AC XY:

AN XY:

74430

show subpopulations

Gnomad4 AFR

AF:

0.000144

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.0172

Gnomad4 SAS

AF:

0.00104

Gnomad4 FIN

AF:

0.0000943

Gnomad4 NFE

AF:

0.000294

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000337

Hom.:

Bravo

AF:

0.000714

Asia WGS

AF:

0.00375

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Feb 26, 2019

Genetic Services Laboratory, University of Chicago

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jun 29, 2016

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Maturity onset diabetes mellitus in young

Benign:1

Clinical Genomics, Uppaluri K&H Personalized Medicine Clinic

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: research

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 rs3809315 with MODY3. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.84

CADD

Benign

4.0

DANN

Benign

0.71

Splicing

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