chr17-37731787-C-T

Position:

• chr17-37731787-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 7P and 4B. PM1 PM5 PP3 PP5_Moderate BS2

The NM_000458.4(HNF1B):​c.853G>A​(p.Gly285Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000992 in 1,410,962 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G285D) has been classified as Likely pathogenic.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000099 (0 hom.)
• Consequence: HNF1B NM_000458.4 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:2 U:1
• Conservation: PhyloP100: 7.57

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 Uncertain_significance. Variant got 3 ACMG points.

• PM1: In a helix (size 3) in uniprot entity HNF1B_HUMAN there are 6 pathogenic changes around while only 0 benign (100%) in NM_000458.4
• PM5: Other missense variant is known to change same aminoacid residue: Variant chrnull-null-null-null is described in UniProt as null.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.835
• PP5: Variant 17-37731787-C-T is Pathogenic according to our data. Variant chr17-37731787-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 562392.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr17-37731787-C-T is described in Lovd as [Likely_pathogenic].
• BS2: High AC in GnomAdExome4 at 14 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HNF1B	NM_000458.4	c.853G>A	p.Gly285Ser	missense_variant	4/9	ENST00000617811.5	NP_000449.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HNF1B	ENST00000617811.5	c.853G>A	p.Gly285Ser	missense_variant	4/9	1	NM_000458.4	ENSP00000480291

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000992 AC: 14 AN: 1410962 Hom.: 0 Cov.: 32 AF XY: 0.00000855 AC XY: 6 AN XY: 701966

Gnomad4 AFR exome AF: 0.0000314

Gnomad4 AMR exome AF: 0.00

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: 0.0000120

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:2 Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Renal cysts and diabetes syndrome Pathogenic:1

Likely pathogenic, criteria provided, single submitter

literature only

Institute of Human Genetics, FAU Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg

Jul 06, 2019

- -

not provided Pathogenic:1

Likely pathogenic, no assertion criteria provided

research

Gharavi Laboratory, Columbia University

Sep 16, 2018

- -

HNF1B-related disorder Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Aug 28, 2024

The HNF1B c.853G>A variant is predicted to result in the amino acid substitution p.Gly285Ser. This variant was reported in an individual with congenital or cystic renal disease (Supp. Table 7 in Groopman et al 2019. PubMed ID: 30586318). A different substitution at the same amino acid (p.Gly285Asp) has been reported in an individual with maturity-onset diabetes of the young type 5 (MODY 5) (Bellanne-Chantelot et al. 2005. PubMed ID: 16249435). This variant has not been reported in a large population database, indicating this variant is rare. Although we suspect that this variant may be pathogenic, at this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.91
BayesDel_addAF	Pathogenic	0.43	D
BayesDel_noAF	Pathogenic	0.39
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.98	D;.;D;D;.
Eigen	Pathogenic	0.81
Eigen_PC	Pathogenic	0.81
FATHMM_MKL	Pathogenic	0.98	D
M_CAP	Uncertain	0.21	D
MetaRNN	Pathogenic	0.83	D;D;D;D;D
MetaSVM	Pathogenic	0.91	D
MutationAssessor	Uncertain	2.4	M;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Pathogenic	0.92	D
Sift4G	Uncertain	0.020	D;D;D;D;D
Polyphen		1.0	D;.;.;.;.
Vest4		0.90
MutPred		0.69		Gain of relative solvent accessibility (P = 0.0166);.;Gain of relative solvent accessibility (P = 0.0166);.;Gain of relative solvent accessibility (P = 0.0166);
MVP		0.99
ClinPred		0.99	D
GERP RS		5.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.49
gMVP		0.90

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: rs914046953; hg19: chr17-36091778;