17-37686595-C-T

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4 BP6_Very_Strong BA1

The NM_000458.4(HNF1B):c.*777G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0268 in 153,888 control chromosomes in the GnomAD database, including 183 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.027 (182 hom., cov: 32)
  • Exomes 𝑓: 0.0029 (1 hom.)
• Consequence: HNF1B NM_000458.4 3_prime_UTR
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: 0.363

Genes affected

HNF1B (HGNC:11630): (HNF1 homeobox B) This gene encodes a member of the homeodomain-containing superfamily of transcription factors. The protein binds to DNA as either a homodimer, or a heterodimer with the related protein hepatocyte nuclear factor 1-alpha. The gene has been shown to function in nephron development, and regulates development of the embryonic pancreas. Mutations in this gene result in renal cysts and diabetes syndrome and noninsulin-dependent diabetes mellitus, and expression of this gene is altered in some types of cancer. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Sep 2009]

ACMG classification

Verdict is Benign. Variant got -17 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.17).
• BP6: Variant 17-37686595-C-T is Benign according to our data. Variant chr17-37686595-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 322930.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0926 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HNF1B	NM_000458.4	c.*777G>A		3_prime_UTR_variant	9/9	ENST00000617811.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HNF1B	ENST00000617811.5	c.*777G>A		3_prime_UTR_variant	9/9	1	NM_000458.4

Frequencies

GnomAD3 genomes AF: 0.0271 AC: 4125 AN: 152038 Hom.: 182 Cov.: 32

Gnomad AFR AF: 0.0953

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00818

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000208

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.000265

Gnomad OTH AF: 0.0167

GnomAD4 exome AF: 0.00289 AC: 5 AN: 1732 Hom.: 1 Cov.: 0 AF XY: 0.00220 AC XY: 2 AN XY: 908

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0117

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.0271 AC: 4126 AN: 152156 Hom.: 182 Cov.: 32 AF XY: 0.0259 AC XY: 1930 AN XY: 74376

Gnomad4 AFR AF: 0.0951

Gnomad4 AMR AF: 0.00811

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000208

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000265

Gnomad4 OTH AF: 0.0166

Alfa AF: 0.00791 Hom.: 43

Bravo AF: 0.0301

Asia WGS AF: 0.00549 AC: 20 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Renal cysts and diabetes syndrome Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Maturity onset diabetes mellitus in young Benign:1

Likely benign, criteria provided, single submitter

research

Clinical Genomics, Uppaluri K&H Personalized Medicine Clinic

-

HNF1B gene mutations are associated with early onset diabetes and pancreatic atrophy. It is also associated with multiple renal manifestations including renal cysts, Tubulointerstitial disease, glomerulocystic disease, renal hypoplasia, hypomagnesemia. However no sufficient evidence is found to ascertain the role of this particular variant rs17138512, yet. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.17
Cadd	Benign	6.3
Dann	Benign	0.91

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

LitVar

Other links and lift over

dbSNP: rs17138512; hg19: chr17-36046598;